Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Printer ML6050 ML-6050

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ML-6050


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                 LASER PRINTER
                 ML-6050
                 QwikLaser 6050




SERVICE                      MANUAL


 LASER PRINTER                     CONTENTS
                       1. Precautions

                       2. Specifications

                       3. Reference Information

                       4. Disassembly and Reassembly

                       5. Troubleshooting

                       6. Exploded Views and Parts List

                       7. Electrical Parts List

                       8. Schematic Diagrams
8. Schematic Diagrams
8-1. Engine Controller (1/6)


                                                                                                                                                                                                                                                   VCC
                               A(0:23)
                                                                                                                                                                                                           VCC_U1
                                                                                                                                   C51       18PF     A(0)




                                                                                                                                                                                                              103
                                                                                                                                                                                                              113
                                                                                                                                                                                                              142
                                                                                                                                                                                                              143
                                                                                                                                                                                                              167
                                                                                                                                                                                                              168
                                                                                                                                                                                                              183
                                                                                                                                                                                                              184
                                                                                                                                                                                                              199
                                                                                                                                                                                                              200
                                                                                                                                   C52       18PF     A(1)




                                                                                                                                                                                                              20
                                                                                                                                                                                                              21
                                                                                                                                                                                                              22
                                                                                                                                                                                                              46
                                                                                                                                                                                                              61
                                                                                                                                                                                                              62
                                                                                                                                                                                                              80
                                                                                                                                                                                                              95
                                                                                                                                                                                                                                                     R46                                                                nECS0
                                                                                                                                   C53       18PF     A(2)
                                                                                                                                                                                                                                                     10K                                                                nECS1




                                                                                                                                                                                                               VDD1
                                                                                                                                                                                                               VDD2
                                                                                                                                                                                                               VDD3
                                                                                                                                                                                                               VDD4
                                                                                                                                                                                                               VDD5
                                                                                                                                                                                                               VDD6
                                                                                                                                                                                                               VDD7
                                                                                                                                                                                                               VDD8
                                                                                                                                                                                                               VDD9
                                                                                                                                                                                                              VDD10
                                                                                                                                                                                                              VDD11
                                                                                                                                                                                                              VDD12
                                                                                                                                                                                                              VDD13
                                                                                                                                                                                                              VDD14
                                                                                                                                                                                                              VDD15
                                                                                                                                                                                                              VDD16
                                                                                                                                                                                                              VDD17
                                                                                                                                                                                                              VDD18
                                                                                                                                   C54       18PF     A(3)
                                                                                                                                   C55       18PF     A(4)          A(0)            2   1    40                                              29
                                                                                                                                                                                                  A0                                 nECS0
                                                                                                                                   C56       18PF     A(5)          A(1) RA13       4   3    41                                              30
                                                                                                                                                                                                  A1                                 nECS1
                      VCC        LF4                                                                                VCC_U1         C57       18PF     A(6)          A(2) RA33       6   5    42                                              31
                                                                                                                                                                                                  A2                                 nECS2                                                                              nRCS(0:2)
                            FILTER_22NF                                                                                            C58       18PF     A(7)          A(3)            8   7    43                                              32
                                                                                                                                                                                                  A3                                 nECS3
                               1     3                                                                                             C59       18PF     A(8)          A(4)            2   1    44                                              69              nRCS(0)
                                   2 C191     C160   C9        C10      C11         C12     C13       C14    C15                                                                                  A4                                 nRCS0
                                                                                                                                   C60       18PF     A(9)          A(5) RA14       4   3    45                                              72
                                                                                                                                                                                                  A5                                 nRCS1
                                                                                                                                   C61       18PF    A(10)          A(6) RA33       6   5    47                                              73              nRCS(2)
                                 33UF/16V 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF                                                                                                         A6                                 nRCS2                                                                              nRAS(0:5)
                                                                                                                                   C62       18PF    A(11)          A(7)            8   7    48                                              74
                                                                                                                                                                                                  A7                                 nRCS3
                                                                                                                                   C63       18PF    A(12)          A(8)            2   1    49                                              122                  nRAS(0)
                                                                                                                                                                                                  A8                                 nRAS0
                                                                                                                                   C64       18PF    A(13)          A(9) RA10       4   3    50                                              123
                                                                                                                                                                                                  A9                                 nRAS1                                                                              nCAS(0:3)
                                                                                                                                   C65       18PF    A(14)          A(10)RA33       6   5    51                                              124                  nRAS(2)
                       C16      C17     C18   C19    C20       C21      C22         C23     C24       C25    C47                                                                                  A10                                nRAS2
                                                                                                                                   C66       18PF    A(15)          A(11)           8   7    54                                              125                  nRAS(3)
                                                                                                                                                                                                  A11                                nRAS3
                      0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF                                            C67       18PF    A(16)          A(12)           2   1    55                                              126
                                                                                                                                                                                                  A12                                nRAS4
                                                                                                                                   C68       18PF    A(17)          A(13)RA11       4   3    56                                              127
                                                                                                                                                                                                  A13                                nRAS5
                                                                                                                                   C69       18PF    A(18)          A(14)RA33       6   5    57                                              116                       nCAS(3)
                                                                                                                                                                                                  A14                                nCAS3
                                                                                                                                   C70       18PF    A(19)          A(15)           8   7    58                                              117                       nCAS(2)
                                                                                                                                                                                                  A15                                nCAS2
                                                                                                                                   C71       18PF    A(20)          A(16)           2   1    59                                              118                       nCAS(1)
                                                                                                                                                                                                  A16                                nCAS1
                                                                                                                                   C72       18PF    A(21)          A(17) RA9       4   3    60                                              121                       nCAS(0)
                                                                                                                                                                                                  A17                                nCAS0
                                                                                                                                   C73       18PF    A(22)          A(18)RA33       6   5    63                                              33
                                                                                                                                                                                                  A18                                 nWE0                                                                              WE(0)
                                                                                                                                   C74       18PF    A(23)          A(19)           8   7    64                                              34
                                                                                                                                                                                                  A19                                 nWE1
                                                                                                                                                                    A(20)           2   1    65                                              35
                                                                                                                                                                                                  A20                                 nWE2
                                                                                                                                                                    A(21)RA12       4   3    66                                              36
                                                                                                                                                                                                  A21                                 nWE3
                                                                                                                                                                    A(22)RA33       6   5    67                                              114
                                                                                                                                                                                                  A22                                 nDWE                                                                              nDWE
                                                                                                                                                                    A(23)           8   7    68                                              115
                               D(0:31)                                                                                                                                                            A23                                 nDOE
                                                                                                                                                                                                                                      UCLK   156
                                                                                                                                                     D(0)           2          1             75                                              151                                                            R153   33
                                                                                                                                                                                                  D0                                   RXD                                                                              RXD
                                  VCC                                                 VCC                                                            D(1)           4          3             76                                              150                                                            R154   33
                                                                                                                                                                                                  D1                                   TXD                                                                              TXD
                                                                                                                                         VCC         D(2)    RA1    6          5             77                                              149
                                                                                                                                                                                                  D2                                   DTR
                                                                                                                                                     D(3)    RA33   8          7             78                                              148
                                                                       C7                                                                                                                         D3                                   DSR
                                                                                                                                                     D(4)           2          1             79                                              153
                                      R44                                                                                                                                                         D4                               SIO_RXD                                                                              OE*
                                                                 0.1UF                                                                        R130   D(5)           4          3             81                                              152
                                      10K                                                                                                                                                         D5                               SIO_TXD
                                                                                                    R43                                              D(6)    RA2    6          5             82                                              37
                                                                                                                                               1K                                                 D6                                   nOE                                                                              DA(0:12)
                                                                                                                                                     D(7)    RA33   8          7             83                                              198
                                                                                                    10K                                                                                           D7                                nBK0HW
                                                             U30                                                                                     D(8)           2          1             84                                              128          DA(0)               DA(0) C75   18PF
                                                                                                                                                                                                  D8                                   DA0
                                                           2                    8                                                                    D(9)           4          3             85                                              129          DA(1)               DA(1) C76   18PF
                                                             _RIN VCC                                                                                                                             D9                                   DA1                                                           R290
                                                           1                    7                           U35-1            U35-2                   D(10)   RA3    6          5             86                                              130          DA(2)               DA(2) C77   18PF
                                                             REF  SEN                                                                                                                             D10                                  DA2                                                            0
                                                           3                    5                     1         2       3        4                   D(11)   RA33   8          7             87                                              131          DA(3)               DA(3) C78   18PF
                                                             CT  _RES                                                                                                                             D11                                  DA3
                                                           4                    6                                                                    D(12)          2          1             89                                              132          DA(4)               DA(4) C79   18PF
                                                             GND  RES                                                                                                                             D12                                  DA4
                                                                                                            74F14            74F14                   D(13)          4          3             90                                              133          DA(5)               DA(5) C80   18PF
                                               R42                                                                                                                                                D13                                  DA5
                                                               7705A                                                                                 D(14)   RA4    6          5             91                       U1                     135          DA(6)               DA(6) C81   18PF
                                               470                                                                                                                                                D14                                  DA6
                                                                                                                                                     D(15)   RA33   8          7             92                                              136          DA(7)               DA(7) C82   18PF
                                                                                                                                                                                                  D15                                  DA7
                                                                                                                                                     D(16)          2          1             93                                              137          DA(8)               DA(8) C83   18PF
                                                                                                                                                                                                  D16                                  DA8
                                                                                                                                                     D(17)          4          3             94                     KS32C6100                138          DA(9)               DA(9) C84   18PF
                                                                                                                                                                                                  D17                                  DA9
                                                  C1                                                                              C161               D(18)   RA5    6          5             96                                              139         DA(10)               DA(10)C85   18PF
                                       C6                                                 R45                                                                                                     D18                                 DA10
                                      0.1UF    33UF/16V                                                                                              D(19)   RA33   8          7             97                                              140
                                                                                          10K                                 10NF                                                                D19                                 DA11
                                                                                                                                                     D(20)          2          1             98                                              141
                                                                                                                                                                                                  D20                                 DA12
                                                                                                                                                     D(21)          4          3             99                                              11
                                                                                                                                                                                                  D21                           nSELECT_IN                                                                              PP_SELIN*
                                                                                                                                                     D(22)   RA6    6          5            100                                              12
                                                                                                                                                                                                  D22                              nSTROBE                                                                              PP_STROBE*
                                                                                                                                                     D(23)   RA33   8          7            101                                              13
                                                                                                                                                                                                  D23                              nAUTOFD                                                                              PP_AUTOFD*
                                                                                                                                                     D(24)          2          1            102                                              14
                                WTROUT                                                                                                                                                            D24                             nINITIAL                                                                              PP_INIT*
                                                                                                                                    2     1          D(25)          4          3            106                                              15
                                                                                                                                                                                                  D25                                 nACK                                                                              MC_ACK*
                                                                                                                  VCC                                D(26)   RA7    6          5            107                                              16
                                                                                                                                                                                                  D26                                  BSY                                                                              MC_BUSY
                                                                                                                        U36-1                        D(27)   RA33   8          7            108                                              17
                                                                                                                                                                                                  D27                               SELECT                                                                              MC_SELECT
                                                                                                                        74F08                        D(28)          2          1            109                                              18
                                                                                                            C192                                                                                  D28                               PERROR                                                                              MC_PERROR
                                                                                                                                                     D(29)          4          3            110                                              19
                                                                                                                                                                                                  D29                               nFAULT                                                                              MC_FAULT*
                                                                                                            0.1UF                        3           D(30)   RA8    6          5            111   D30
                                                                                                                                                     D(31)   RA33   8          7            112   D31                                                                                                                   PPD(0:7)
                                                                                                                                                                                                                                             3           PPD(0)
                                                                                                                                                                                                                                      PPD0
                                RESET*                                                                                                                                                      195   nRESET                              PPD1   4           PPD(1)
                                 TnRST                                                                                                                                                      196   TnRST                               PPD2   5           PPD(2)
                                                                                                                                                                              VCC




                                                                                                                                                                                            202   TDI                                 PPD3   6           PPD(3)
                                                                                                                                                                                            204                                              7           PPD(4)
                                                                                                                                                                                                  TMS                                 PPD4
                                                                                                                                                                                            208   TCK                                 PPD5   8           PPD(5)
                                      TDO                                                                                                                                                   203   TDO                                 PPD6   9           PPD(6)
                                                                                                                                                                                            197   TMODE                               PPD7   10          PPD(7)
                                                                                                                                                                                            201                                              175
                                                                                                                                                                                                  CLKSEL                             GPIO0                                                                              VBUS
                                                                                                                                                                                                                                             176
                                                                                                                                                                                                                                     GPIO1                                                                              PANEL_KEY
                                SYSCLK                                                                                                                                                      206 MCLK                                 GPIO2   177                                                                        LED(4)
                                                                                                                                                                                                                                     GPIO3   178
                                                                                                                                                                                                                                                                                                                        LED(1)
                                                                                                                                                                        VCC                                                                  179
                                                                                                                                                                                                                                     GPIO4                                                                              LED(2)
                                                                                                                                                                                                                                             180
                                                                                                                                                                                                                                     GPIO5                                                                              LED(3)
                                                                                                                                                                                                                                     GPIO6   181                                                                        EIRQ0*
                                                                                                                                                                                                                                     GPIO7   182
                                                                                                                                                                          R272                                                                                                                                          E2PROM_DO
                                                                                                                                                                                                                                     GPIO8   185
                                                                                                                                                                          10K                                                                                                                                           DPO_RST*
                                                                                                                                                                                                                                             186
                                                                                                                                                                                                                                     GPIO9                                                                              E2PROM_DI
                                 CCLK*                                                                                                                                                      158   COMCLK                            GPIO10   187                                                                        WR_FLASH
                                 CBSY*                                                                                                                                                      160   CnPESY                            GPIO11   188                                                                        DEMO*
                                 CMSG*                                                                                                                                                      161   CnPMSG                            GPIO12   189
                                                                                                                                                                                                                                                                                                                        SEL_DEMO
                                                                                                                                                                                            162                                              190
                                 EBSY*                                                                                                                                                            CnEBSY                            GPIO13                                                                              EXITP*
                                 EMSG*                                                                                                                                                      163   CnEMSG                            GPIO14   191                                                                        E2PROM_CS
                               PSYNRQ*                                                                                                                                                      166   nENGPRQ                           GPIO15   192                                                                        E2PROM_SK
                                                                                                                                  R159          0                                           169                                              23
                                LSYNC*                                                                                                                                                            nENGHSYNC                         EXMREQ
                                                                                                                                                                                            170                                              24
                                                                                                                                                                                                  nCPUPSYNC                         EXMACK
                                                                                                                                                                                            171                                              25
                                READY*                                                                                                                                                            nENGREADY                       EXTNWAIT                 R142
                                PRINT*                                                                                                                                                      172   nCPUPRINT                           nSC5   28                                              C301
                                                                                                                                                                                            173                                              144            33
                                VIDEO*                                                                                                                                                            VIDEO_OUT                          nSRD0                                                   220PF
                                                                                                                                                                                                                                     nSWR0   145
                                                                                                                                                                                            164                                              146
                                  VCLK                                                                                                                                                            VCLK0                              nSRD1
                                                                                                                                                                                                                                     nSWR1   147
                                                                                                                                                                                                                                     VCLK1   165
                                                                                                                                                                                                                                             194
                                                                                                                                                                                                        GND10
                                                                                                                                                                                                        GND11

                                                                                                                                                                                                                       GND12
                                                                                                                                                                                                                       GND13
                                                                                                                                                                                                                       GND14
                                                                                                                                                                                                                       GND15
                                                                                                                                                                                                                       GND16
                                                                                                                                                                                                                       GND17
                                                                                                                                                                                                                       GND18
                                                                                                                                                                                                                       GND19
                                                                                                                                                                                                                       GND20
                                                                                                                                                                                                                       GND21
                                                                                                                                                                                                                       GND22
                                                                                                                                                                                                                       GND23
                                                                                                                                                                                                                       GND24




                                                               U36-2                                U36-3                         U36-4                                                                                             WTROUT                                  WTROUT
                                                                                                                                                                                                        GND1
                                                                                                                                                                                                        GND2
                                                                                                                                                                                                        GND3
                                                                                                                                                                                                        GND4
                                                                                                                                                                                                        GND5
                                                                                                                                                                                                        GND6
                                                                                                                                                                                                        GND7
                                                                                                                                                                                                        GND8
                                                                                                                                                                                                        GND9




                                                           4                                    9                            13                                     U35-6
                                                                            6                                 8                                11            13         12
                                                           5                                10                               12
                                                                                                                                                                                                         1
                                                                                                                                                                                                         2
                                                                                                                                                                                                        26
                                                                                                                                                                                                        27
                                                                                                                                                                                                        38
                                                                                                                                                                                                        39
                                                                                                                                                                                                        52
                                                                                                                                                                                                        53
                                                                                                                                                                                                        70
                                                                                                                                                                                                        71
                                                                                                                                                                                                        88

                                                                                                                                                                                                                      104
                                                                                                                                                                                                                      105
                                                                                                                                                                                                                      119
                                                                                                                                                                                                                      120
                                                                                                                                                                                                                      134
                                                                                                                                                                                                                      154
                                                                                                                                                                                                                      155
                                                                                                                                                                                                                      157
                                                                                                                                                                                                                      159
                                                                                                                                                                                                                      174
                                                                                                                                                                                                                      193
                                                                                                                                                                                                                      205
                                                                                                                                                                                                                      207




                                                                                                                                                                    74F14
                                                               74F08                                74F08                         74F08




Samsung Electronics                                                                                                                                                                                                                                                                                                                  8-1
Schematic Diagrams

Engine Controller (2/6)




                                                    +5V                                                                                                                                                                                              +5V                         +5V                +24V   +5V

                                  CN2                                                                                                                                                                                                                                         R61      R60    R59
                                         1                                                                                                                                                                                              D228       D229     D230     D231     5.6K     5.6K   5.6K                    CN6
                                                                                            



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