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TSL300VEF2


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                                         S/M NO. : TSL300VEF2


Service Manual
LCD TV
CHASSIS : SL-300V
Model :      DLV-26C3SMBS
             DLV-32C3SMBS
             DLV-37C3LMBS
             DLV-42C1LMN




   Caution
   : In this Manual, some parts can be changed for improving. their
     performance without notice in the parts list. So, if you need the
     latest parts information, please refer to PPL(Parts Price List)in
     Service Information Center.




                                                        MAY. 2007
                                       Contents
1. Safety Precaution                                              3

2. Preliminary Troubleshooting                                     4

3. Product Specification                                           5
   1) Standard of Product                                          5
   2) Available Input Signal                                       6
   3) Available PIP Mode                                           6

4. Service Remote Controller                                       7
   1) Key Arrangement                                              7
   2) EEPROM Data                                                  8

5. Block Diagram                                                  11

6. Hardware Troubleshooting : Digital Board                       12

7. Hardware Troubleshooting : SMPS                                15
   1) FEL-3237A : DLV-26C3SMBS, DLV-32C3SMBS, DLV-37C3LMBS        15
   2) FEL-42C1 : DLV-42C1LMN                                      17

8. Bill Of Materials                                              19
   1) DLV-26C3SMBS                                                19
   2) Differental Materials Besides Mechanical Parts              28

9. How to S/W Upgrade Tools                                       29
   1) Requirements                                                29
   2) Outline of the S/W upgrade tool, which is DTV_Updater.exe   29
   3) How to upgrade decoder of LCD TV                            30
   4) How to upgrade PIC micom of LCD TV                          34

10. Schematics : Digital Board                                    39

11. Schematics : SMPS                                             48
   1) FEL-3237A : DLV-26C3SMBS, DLV-32C3SMBS, DLV-37C3LMBS        48
   2) FEL-42C1 : DLV-42C1LMN                                      49

12. Mechanical Development Figure                                 50
  1) DLV-26C3SMBS                                                 50
  2) DLV-32C3SMBS                                                 51
  3) DLV-37C3LMBS                                                 52
  4) DLV-42C1LMN                                                  53




                                              -2-
1. Safety Precaution

(1) When moving or laying down a LCD Set, at least two people must work together. Avoid any
    impact towards the LCD Set.

(2) Do not leave a broken LCD Set on for a long time. To prevent any further damages, after
    checking the condition of the broken Set, make sure to turn the power (AC) off.

(3) When opening the BACK COVER, you must turn off power (AC) to prevent any electric
    shock.

(4) When loosening screws, check the position and type of the screw. Sort out the screws and
    store them separately for reassembling. Because screws holding PCBs are working as
    electric circuit grounding, make sure to check if any screw is missing when assembling /
    reassembling. Do not leave any screws inside the set.

(5) A LCD Set contains different kinds of connector cables. When connecting or disconnecting
    cables, check the direction and position of the cable beforehand.

(6) Connect/disconnect the connectors slowly with care especially FFC (film) cables and FPC
    cables. Do not connect or disconnect connectors instantaneously with force, and handle
    them carefully for reassembling.

(7) Connectors are designed so that if the number of pins or the direction does not match,
    connectors will not fit. When having problem in plugging the connectors, check their kind,
    position, and direction.




                                              -3-
2. Preliminary Troubleshooting

1) LCD TV does not response or remote controller does not work.
   - Check the power cord to be plugged.
   - Check the battery of the remote controller.

2) Sound is discontinuous or broken sometimes.
   - Check if [SOUND] -> [AVC] is [ON].
   - Set the sound effect into 'F Mono'.

3) Picture of digital program is sometimes broken and sound is discontinuous.
   - Digital program has a little problem because of signal receiving status.
   - Check if the RF cable is correctly connected.
   - Ask for the broadcasting station if the RF cable connection has no problem.

4) Picture of analog program is noisy.
   - Check the RF cable connection.
   - Check if [Picture] -> [Noise Reduction] is ON.
   - Change the [Install] -> [Programme Setup] -> [Fine] value.

5) Sound is not generated in HDMI mode.
   - Reconnect HDMI jack.
   - DVI signal has no sound. Check the output signal of device to be connected to LCD TV.
   - If you want to use DVI-HDMI cable, you should also connect audio cable into the LCD TV.

6) In spite of 'Auto Setup', picture size is not completely adapted to the screen.
   - Check if the input signal is available.
   - Ensure that the desktop has no black area.
   - Some errors (picture position problem) will be occurred according to certain video card.
     In this case, you should adjust 'Frequency' control.

7) In spite of 'Auto Setup', picture is not clear.
   - Adjust 'Phase' control.




                                                     -4-
3. Product Specification

1) Standard of Product

                     Features       DLV-26C3SMBS          DLV-32C3SMBS           DLV-37C3LMBS            DLV-42C1LMN

   LCD Panel       Panel Model       LTA260W3_L01          LTA320WT-LF2          LC370WX1-SL01          LC420WX5-SLA1
                   Screen Size            68 cm                   81 cm               93 cm                  106 cm
                   Aspect Ratio           16 : 9                  16 : 9               16 : 9                 16 : 9
                    Resolution         1366 X 768               1366 X 768          1366 X 768             1366 X 768
                                         (WXGA)                  (WXGA)              (WXGA)                  (WXGA)
                    Pixel Pitch        0.42150 mm           0.51075 mm             0.60000 mm              0.68100 mm
                  Contrast Ratio     4000 : 1 (MAX)        5000 : 1 (MAX)         5000 : 1 (MAX)         5000 : 1 (MAX)

   TV System        Receiving           PAL-B/G                  PAL-B/G             PAL-B/G                 PAL-B/G
                     System             PAL-B/H                  PAL-B/H             PAL-B/H                 PAL-B/H
                                       NTSC (AV)                NTSC (AV)           NTSC (AV)              NTSC (AV)

  LVDS Cable                             FI-E30S                 FI-E30S          FL-X30SSL-HF           FL-X30SSL-HF

   LVDS B+                                 +5V                     +5V                 +12V                   +12V

Input Connector         RF           50 Ohm Coaxial       50 Ohm Coaxial         50 Ohm Coaxial          50 Ohm Coaxial
                  S-Video / Video           2                       2                    2                      2
                   Component            RCA X 2                  RCA X 2             RCA X 2                 RCA X 2
                     PC RGB             D-Sub X 1               D-Sub X 1           D-Sub X 1               D-Sub X 1
                    PC Audio        3.5 mm Mini - Jack   3.5 mm Mini - Jack     3.5 mm Mini - Jack      3.5 mm Mini - Jack
                      HDMI                  1                       1                    1                      1

    Output            SPDIF           Optical - Jack        Optical - Jack         Optical - Jack         Optical - Jack
   Connector       Headphone                X                       X                    X                      X
                   Monitor - out            1                       1                    1                      1

 Sound Output          Max.               10W                     10W                  10W                     10W

 Power Module         Model            FEL-3237A                FEL-3237A           FEL-3237A               FEL-42C1

    Power              Max.               110W                    155W                 195W                   198W
 Consumption      Power Source         220-240V~                220-240V~           220-240V~               220-240V~
                                        50-60Hz                  50-60Hz             50-60Hz                 50-60Hz
   Dimension      Set Dimension     674 x 550 x 240 mm   806 x 626.5 x 240 mm   940 x 720 x 328.7 mm   1060 x 823 x 328 mm
  (W x H x D)      (with stand)
                  Set Dimension     674 x 496 x 114 mm   806 x 574.5 x 110 mm   940 x 655 x 129 mm     1060 x 758 x 132.5 mm
                  (without stand)

  Owing to our policy of continuous improvement, specifications may change.




                                                          -5-
Product Specification


2) Available Input Signal

   INTERFACE          SOURCE              VF            INTERFACE         SOURCE         VF
         RF          PAL-B/G, B/H         50Hz            HDMI            640x480        60Hz
     VIDEO           PAL-B/G, B/H         50Hz                            640x480        75Hz
                        PAL-60            60Hz                            800x600        60Hz
                        NTSC-M            60Hz                            800x600        72Hz
                      NTSC-443            60Hz                            800x600        75Hz
    S-VIDEO          PAL-B/G, B/H         50Hz                         1024x768          60Hz
                        PAL-60            60Hz                         1024x768          70Hz
                        NTSC-M            60Hz                         1024x768          75Hz
                      NTSC-443            60Hz                         1280x1024         60Hz
  COMPONENT              480i             60Hz                         1360x768          60Hz
                         480p             60Hz                              480p         60Hz
                         576i             50Hz                              576p         50Hz
                         576p             50Hz                              720p         50Hz
                         720p             50Hz                              720p         60Hz
                         720p             60Hz                              1080i        50Hz
                         1080i            50Hz                              1080i        60Hz
                         1080i            60Hz
         PC             640x480           60Hz
                        640x480           75Hz
                        800x600           60Hz
                        800x600           72Hz
                        800x600           75Hz
                      1024x768            60Hz
                      1024x768            70Hz
                      1024x768            75Hz
                      1280x1024           60Hz
                      1360x768            60Hz




3) Available PIP Mode

  MODE         ATV      VIDEO 1     VIDEO 2      COMP 1     COMP 2   HDMI           PC
   ATV         X            X         X            O             O    X             X
  VIDEO 1      X            X         X            X             X    X             X
  VIDEO 2      X            X         X            X             X    X             X
  COMP 1       O            X         X            X             X    X             X
  COMP 2       O            X         X            X             X    X             X
   HDMI        X            X         X            X             X    X             X
    PC         X            X         X            X             X    X             X




                                                  -6-
4. Service Remote Controller

1) Key Arrangement


            ChSet

            Recall
                                  Volume
          HEAT-RUN
                                    PQ
           SVPPX                 Hotel Lock

            MPEG                 PreScale

                                    W/B
            MISC
                                   Reset
           Pattern




                           -7-
Service Remote Controller


2) EEPROM Data

Key            Content                     Default Value                    Description
S2    ChSet    Panel Model         SS32                    Current LCD Panel
               EDID & Ch Set       0                       EDID & CH Update
S3    Volume   Volume Test         0                       Don't Care
S4    SVPPX    PAL Sub Brt         0x20                    ATV Bright Control
               PAL Sub Cont        0x80                    ATV Contrast Control
               AV Sub Brt          0x20                    Video Bright Control
               AV Sub Cont         0x80                    Video Contrast Control
               Video Sub Cb Sat    0x80                    Video Cb Color
               Video Sub Cr Sat    0x80                    Video Cr Color
               Video Sub Hue       0x0                     Video Hue
               Video YC Delay      0x0                     Video YC Delay
               Pedestal            ON                      Pedestal Level ON/OFF
               Chroma AGC          0x8A                    Sub Carrier AGC
               CVBS AGC            ON                      CVBS AGC
               Anti-alias          OFF                     Anti-alias ON/OFF
               PC G Clamp          0x44                    PC G Clamp Level Control
               PC B Clamp          0x44                    PC B Clamp Level Control
               PC R Clamp          0x44                    PC R Clamp Level Control
               PC G Gain           0x50                    PC G Gain Control
               PC B Gain           0x50                    PC B Gain Control
               PC R Gain           0x50                    PC R Gain Control
               Com 480i Y Clamp    0x30                    480i Y Clamp Level Control
               Com 480i Pb Clamp   0x200                   480i Pb Clamp Level Control
               Com 480i Pr Clamp   0x200                   480i Pr Clamp Level Control
               Com 480i Y Gain     0x50                    480i Y Gain Control
               Com 480i Pb Gain    0x50                    480i Pb Gain Control
               Com 480i Pr Gain    0x50                    480i Pr Gain Control
               Com HD Y Clamp      0x30                    480p~ Y Clamp
               Com HD Pb Clamp     0x200                   480p~ Pb Clamp
               Com HD Pr Clamp     0x200                   480p~ Pr Clamp
               Com HD Y Gain       0x50                    480p~ Y Clamp
               Com HD Pb Gain      0x50                    480p~ Pb Clamp
               Com HD Pr Gain      0x50                    480p~ Pr Clamp
               Sync Threshold      0x0                     Component Sync Slicing Level Control
S5    PQ       Dp B/L Cont         0                       Black & White Contrast
               Main CVBS Cont      128                     Main Picture CVBS Contrast
               Main CVBS Bright    128                     Main Picture CVBS Brightness
               Main DTV Cont       128                     Main Picture DTV Contrast
               Main DTV Bright     112                     Main Picture DTV Brightness
               Main HDMI Cont      128                     Main Picture HDMI Contrast
               Main HDMI Bright    128                     Main Picture HDMI Brightness
               Main Comp PC Cont 130                       Main Picture COMP & PC Contrast


                                                     -8-
Service Remote Controller




Key                Content                       Default Value                     Description
                   Main Comp PC Bright   120                     Main Picture COMP & PC Brightness
                   PIP CVBS Cont         128                     Sub Picture CVBS Contrast
                   PIP CVBS Bright       138                     Sub Picture CVBS Bright
                   PIP DTV Cont          138                     Sub Picture DTV Contrast
                   PIP DTV Bright        128                     Sub Picture DTV Brightness
                   PIP COMP Cont         128                     Sub Picture COMP Contrast
                   PIP COMP Bright       128                     Sub Picture COMP Brightness
                   Dp Hue                64                      Main Picture Tint Control
                   Main V Delay          8                       Main Picture Cr Delay
                   Main U Delay          8                       Main Picture Cb Delay
                   Sub V Delay           8                       Sub Picture Cr Delay
                   Sub U Delay           8                       Sub Picture Cb Delay
                   Peaking               38                      Peaking Control
                   APL Enable            ON                      APL Enable
                   APL Luma Factor       192                     APL Luma Factor
                   APL Gain              128                     APL Gain
                   Filter                0                       Band Pass Filter
                   Gamma Enable          ON                      Gamma Enable
S6    Hotel Lock   CH Preset Lock        OFF                     Auto Programme function ON/OFF
                   Volume Max            100                     Max Volume
                   AV Lock               OFF                     AV Lock ON/OFF
                   Child Lock            OFF                     Child Lock ON/OFF
                   RF Auto               YES                     Auto shutdown without signal at RF
S7    MPEG         DTV V Size            100                     Don't Care
                   DTV H Size            93                      Don't Care
                   DIAHighThreshold Y    0                       Don't Care
                   DIAHighThreshold C    0                       Don't Care
                   DIALowThreshold Y     0                       Don't Care
                   DIALowThreshold Y     0                       Don't Care
S8    WB           Bias R                31                      R Bias
                   Bias G                31                      G Bias
                   Bias B                34                      B Bias
                   Gain R                22                      R Gain
                   Gain G                32                      G Gain
                   Gain B                30                      B Gain
                   Sub Brt               31                      Don't Care
                   Sub Cont              0                       Don't Care
                   Contrast-R            1.039                   Don't Care
                   Contrast-G            1.078                   Don't Care
                   Contrast-B            1.070                   Don't Care
S9    PreScale     SC Pscale             22                      Don't Care
                   FM Pscale             24                      Don't Care


                                                           -9-
Service Remote Controller




Key             Content                           Default Value                        Description
                Stereo ID               10                            Don't Care
                Dimming(LCD)            255                           Don't Care
                SSC Enable              ON                            Spread Spectrum ON/OFF
                SSC Delta               0                             Don't Care
                SSC posi                0                             Don't Care
                SSC nega                0                             Don't Care
                BBE Level               48                            BBE Level
                MVOICE Level            96                            MVOICE Level
                Sound Delay(ms)         40                            Sound Delay
S10   MISC      Panel Model             SS32                          Current LCD Panel
                EDID Update             OFF                           EDID Update
                Model                   SL-300V                       Chassis
                S/W Version             SL-300V_##_####_L######V#DP   Decoder S/W Version
                Micom Version           SL-300V_L######V##M           PIC Micom S/W Version
                Micom Update            OFF                           Micom Update Mode
                OS_DbgPrintf            OFF                           Debugging Mode
                Digital Signal Status   OFF                           Digital Signal Status
                Digital Index Status    OFF                           Don't Care
                RF Software Update      OFF                           RF S/W Update Mode
                S1 HeatRun Enable       OFF                           HeatRun Enable Mode
                Digital Index level     0                             Don't Care
S11   Pattern   Test Pattern            0                             Don't Care
S12   Reset     Factory Reset           0                             Factory Reset
                Eeprom Reset            0                             EEPROM Reset


  [S12] -> [Reset] -> [Eeprom Reset] : EEPROM has default value.
  [S10] -> [MISC] -> [Panel Model] : This data should be set according to each model
                                     : DLV-26C3SMBS -> SS26
                                     : DLV-32C3SMBS -> SS32
                                     : DLV-37C3LMBS -> LG37
                                     : DLV-42C1LMN -> LG42
  [S5] -> [PQ] -> [Brightness & Contrast] : This data can be changed only in each mode.
                                            : For example, [Main HDMI Cont] value can be
                                              changed only in HDMI mode.
  [S6] -> [Hotel Lock] -> [CH Preset Lock] : ON means [Auto Programme] can not be functioning.
  [S6] -> [Hotel Lock] -> [Volume Max] : This value will be max volume of user control.
  [S6] -> [Hotel Lock] -> [AV Lock] : ON means the unit will be locked at AV1.
  [S6] -> [Hotel Lock] -> [Child Lock] : ON means the side buttons will not be functioning.
  [S6] -> [Hotel Lock] -> [RF Auto] : ON means the unit will be turned off automatically
                                      after 30 minutes without signal at RF mode.



                                                           -10-
         Signal Block Diagram : ZORAN
                                                                          5. Block Diagram




-11-
       In this unit, SUPRA660 does not decode digital broadcast stream.
6. Hardware Troubleshooting : Digital Board

1) In spite of sound output, the screen is black.

   1.1 In case of ATV, VIDEO and COMPONENT mode.

                           START




                           Check                          No
                     the input power of
                      IC501 is correct


                                 Yes
                                                                           Check the SMPS
                                                                           and input voltage




                          Check
                                                                 Yes
         the LVDS signal output of IC501 is correct
          (Pin A14, B14, A15, B15, A16, B16, A17,
                 B17, A18, B18, A19, B19)



                                 No                                                   Check                    No
                                                                           the LVDS connector and cable
                                                                                    is correct


                                                                                               Yes

                                                          Yes
             Is the input signal of IC501 normal?



                                 No                                                IC501 Problem.         Perhaps Connector and Cable
                                                                                Replace the Main PCB               Problem.
                                                                                                             Replace the Main PCB



                                                            IC501 Problem.
                                                         Replace the Main PCB




 1) TV mode : Check the path from Pin 8 of TU101 to Pin Y4
    of IC501


 2) Component mode : Check the path from input jack to Pin
    V6, W9, Y8(Comp 1) and W6, Y9, W8(Comp 2) of IC501


 3) Video mode : Check the path from input jack to Pin
    Y10(Video 1) and V8(Video 2) of IC201




                                                                    -12-
Hardware Troubleshooting : Digital Board


  1.2 In case of PC and HDMI mode

                         START




                          Check
                                                      No
                  PC/HDMI resolution to
                  available resolution in
                         LCD TV

                                Yes                              Check the input resolution
                                                                    of external device




                          Check                       No
                    the input power of
                     IC501 is correct


                                Yes                                Check the SMPS and
                                                                      input voltage




                         Check
                                                             Yes
        the LVDS signal output of IC501 is correct
         (Pin A14, B14, A15, B15, A16, B16, A17,
                B17, A18, B18, A19, B19)



                                No                                                Check                    No
                                                                       the LVDS connector and cable
                                                                                is correct


                                                      Yes                               Yes
           Is the input signal of IC501 normal?


                                                                               IC501 Problem.         Perhaps Connector and Cable
                                No
                                                                            Replace the Main PCB               Problem.
                                                                                                         Replace the Main PCB


                                                        IC501 Problem.
                                                     Replace the Main PCB




1) PC mode : Check the path from Jack to Pin Y7, W10 and
   U8


2) HDMI mode : Check the path from input jack to Pin M2,
   M1, N2, N1, P2, L2, L1, U11 and T1 of IC501




                                                                -13-
Hardware Troubleshooting : Digital Board


2) In spite of picture display, the sound is not generated.

                         START



                                                  No           1. Confrim AC connection
                  Does screen appear?                          2. Confrim Power S/W on
                                                               3. Check Video or other PCBs
                                Yes



                                                  No
                 Is the Sound input Jack
                                                                         Check the connection of jack
                   correctly connected?


                                Yes



                                                  No
                 Is the speaker correctly
                                                                       Check the connection of speaker
                       connected?


                                Yes



                           Check                  No
            the input power of IC602 is normal                        Check the SMPS and input voltage
                      (Pin 4, 7, 12, 15)

                                Yes



                           Check                  Yes
           the signal output of IC602 is normal                      Check the path from IC602 to Speaker
                      (Pin 8, 9, 16, 17)

                                No



                          Check                   Yes                      Perhaps IC602 problem.
           the signal output of IC601 is normal
                                                                             Replace main PCB
                       (Pin 31, 33)

                                No



                          Check                   Yes                      Perhaps IC601 problem.
                the input signal of IC601is
                                                                             Replace main PCB
                          normal

                                No



    Digital TV mode : Check the path from Pin 7                Analog TV mode : Check the path from Pin 55
    of IC601 to Pin T2 of IC301                                of IC601 to Pin 10 of TU101

    HDMI mode : Check the path from Pin 21                     Video, Component mode : Check the path from
    of IC601 to Pin V12 of IC501                               each Pin of IC601 to each jack


                                                        -14-
7. Hardware Troubleshooting : SMPS

1) FEL-3237A : DLV-26C3SMBS, DLV-32C3SMBS, DLV-37C3LMBS


                                 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-3237A)
                                                                                       PAGE : 1/2
1. Stand-by 5V is working out.
  A. Can you check In-put voltage(DC) of the capacitor(Location No. : C22)?

         A. Can you check that Vcc voltage of IC3 was supplied from DC15V to DC27V?

            YES       1.1 Checking open and short of Out-put side wire cable.

 YES                  1.2. Checking open and short of the around parts that was connected IC3(STR-A6151).
                           (Location No. : R4, R5, D4, D5, D7)
             NO       1.3. Checking open and short of IC3's each pins.
                      1.4. Checking open and short of 5V's Out-put diode.
                           (Location No. : D13)

                      1.5. Can you check the Fuse(F1) condition(open and short)?
                           YES : Checking 1.2 item after changing FUSE. NO : Checking 1.6 item.
 NO                   1.6. Checking open and short of BD1, BD2.
                           YES : Changing BD1, BD2.
                           NO : Checking open and short of Z1, LF1, LF2, C1, C2.

2. MAIN Out-put voltage is working out but Stand-by 5V is working.
  A. Can you check that it is working normal at Power On after dischanging for 1 minute from Power Off?
      YES : It's protection due to out-put short of the moment through worker's carelessness.
      NO : Checking 2.1 item.
  A. Is Power On signal(3.3V) supplied to Base of Q4?

         B. Can you check the Q4's condition(open and short)?

                      2.1. Can you check the D4's condition(open and short)?
                           YES : Changing D4.             NO : Checking 2.2 item.
                      2.2. Is Relay connected?
                           YES : Checking 2.3 item.       NO : Changing Relay.
             NO
                      2.3. Can check the voltage(AC 400V) of AC rectifying side C23?
                           YES : Checking 2.5 item.
                           NO : Checking 2.5 item after checking the conditions(open and short) of the around
                                parts that was connected IC1. (Location No. : R14, R65, Q1, D1, D23, D12, IC1)
            YES       2.4. changing Q4.
 YES
         C. Can you check that Vcc voltage of IC2's No.12pin was supplied from DC10V to DC12V?

                      2.5. Can you see the square wave(400mV, 32kH) of Q2's source side when DC 13V
                           was supplied to IC2's No.12pin from DC POWER SUPPLY?
                           (CAUTION : Test do it after AC Power Off)
                           YES : Checking 2.1 item after checking diode's condition(open and short) of Main Out-put side.
             NO
                                 (Location No. : D17, D18, D19, D16, D15, D14)

                          NO : Checking open and short of the around parts that was connected IC2.
                               (Location No. : Q2, Q3, D25, D26, D24, R31, R32, R35, R36, R38, D9, D10, C17)

            YES       2.6. Checking open and short of MAIN BOARD.

 NO                   2.7. Checking open and short of MAIN BOARD.

                                                             -15-
Hardware Troubleshooting : SMPS




                                'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-3237A)
                                                                                      PAGE : 2/2
3. 5V's Out-put voltage is measured too high or low.
  A. Checking open and short of IC7.
  B. Checking open and short of R24, R25.
  C. Checking open and short of IC6.
4. 5V's Out-put voltage is work with intermittent mode.
  A. Is R5's condition good from open and short?
     YES : changing R5.            NO : Checking 1.3 and 1.4 items.
     (Checking open and short of MAIN BOARD if that 1, 3 and 1.4 items are no problem.)
5. Out-put voltage(DC12v, 24v, 30v) is measured too high.
  A. Checking open and short of IC5.
  B. Checking open and short of R44, R43.
  C. Checking open and short of IC4.
6. Out-put voltage(DC12v, 24v, 30v) is measured too low.
  A. Checking open and short of IC5.
  B. Checking open and short of R44, R43.
  C. Checking 2.3 item.




                                                            -16-
Hardware Troubleshooting : SMPS


2) FEL-42C1 : DLV-42C1LMN


                                 'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-42C1)
                                                                                       PAGE : 1/2
1. Stand-by 5V is working out.
  A. Can you check In-put voltage(DC) of the capacitor(Location No. : C22)?

         A. Can you check that Vcc voltage of IC3 was supplied from DC15V to DC27V?

            YES       1.1 Checking open and short of Out-put side wire cable.

 YES                  1.2. Checking open and short of the around parts that was connected IC3(STR-A6151).
                           (Location No. : R4, R5, D4, D5, D7)
             NO       1.3. Checking open and short of IC3's each pins.
                      1.4. Checking open and short of 5V's Out-put diode.
                           (Location No. : D13)

                      1.5. Can you check the Fuse(F1) condition(open and short)?
                           YES : Checking 1.2 item after changing FUSE. NO : Checking 1.6 item.
 NO                   1.6. Checking open and short of BD1, BD2.
                           YES : Changing BD1, BD2.
                           NO : Checking open and short of Z1, LF1, LF2, LF3, C1, C2.

2. MAIN Out-put voltage is working out but Stand-by 5V is working.
  A. Can you check that it is working normal at Power On after dischanging for 1 minute from Power Off?
      YES : It's protection due to out-put short of the moment through worker's carelessness.
      NO : Checking 2.1 item.
  A. Is Power On signal(3.3V) supplied to Base of Q4?

         B. Can you check the Q4's condition(open and short)?

                      2.1. Can you check the D4's condition(open and short)?
                           YES : Changing D4.             NO : Checking 2.2 item.
                      2.2. Is Relay connected?
                           YES : Checking 2.3 item.       NO : Changing Relay.
             NO
                      2.3. Can check the voltage(AC 400V) of AC rectifying side C23?
                           YES : Checking 2.5 item.
                           NO : Checking 2.5 item after checking the conditions(open and short) of the around
                                parts that was connected IC1. (Location No. : R14, R65, Q1, D1, D23, D12, IC1)
            YES       2.4. changing Q4.
 YES
         C. Can you check that Vcc voltage of IC2's No.12pin was supplied from DC10V to DC12V?

                      2.5. Can you see the square wave(400mV, 38kH) of Q2's source side when DC 13V
                           was supplied to IC2's No.12pin from DC POWER SUPPLY?
                           (CAUTION : Test do it after AC Power Off)
                           YES : Checking 2.1 item after checking diode's condition(open and short) of Main Out-put side.
             NO
                                 (Location No. : D17, D18, D19, D16, D15, D14)

                          NO : Checking open and short of the around parts that was connected IC2.
                               (Location No. : Q2, Q3, D19, D20, D8, R31, R32, R35, R36, R38, D9, D10, C15)

            YES       2.6. Checking open and short of MAIN BOARD.

 NO                   2.7. Checking open and short of MAIN BOARD.

                                                             -17-
Hardware Troubleshooting : SMPS




                                'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-42C1)
                                                                                      PAGE : 2/2
3. 5V's Out-put voltage is measured too high or low.
  A. Checking open and short of IC7.
  B. Checking open and short of R24, R25.
  C. Checking open and short of IC6.
4. 5V's Out-put voltage is work with intermittent mode.
  A. Is R5's condition good from open and short?
     YES : changing R5.            NO : Checking 1.3 and 1.4 items.
     (Checking open and short of MAIN BOARD if that 1, 3 and 1.4 items are no problem.)
5. Out-put voltage(DC12v, 24v, 30v) is measured too high.
  A. Checking open and short of IC5.
  B. Checking open and short of R44, R43.
  C. Checking open and short of IC4.
6. Out-put voltage(DC12v, 24v, 30v) is measured too low.
  A. Checking open and short of IC5.
  B. Checking open and short of R44, R43.
  C. Checking 2.3 item.




                                                            -18-
 8. Bill Of Materials

1) DLV-26C3SMBS
LOC PART CODE PART NAME                     DESCRIPTION                                      LOC     PART CODE PART NAME                   DESCRIPTION
ZZ100   48B5655B02   TRANSMITTER REMOCON   R-55B02 (AAA)                                     SP01A   4856017800   SCREW SPKR FIX          SWRM+SECC 3CR
ZZ110   PTACPWG216   ACCESSORY AS          DLV-26C3SMBS                                      SP02    4858318510   SPEAKER                 SP-45165F01C
60      4850Q01210   BATTERY               LR03 AAA ALKALINE                                 SP02A   4856017800   SCREW SPKR FIX          SWRM+SECC 3CR
M212    4852176101   COVER BOTTOM          ABS BK                                            ZZ230   PTUNSWG216   PCB UNION AS            DLV-26C3SMBS
M681    4856819300   CLAMP WIRE            NYLON 66                                          100     2193110012   SOLDER WIRE             SAC3000 



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