Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA TV TOSHIBA 20AF41

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TOSHIBA 20AF41


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                                                 SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter the Service Mode, press both set key and remote control key for more than 1 second.

    Set Key       Remocon Key                                                         Operations
  VOL. (-) MIN           0               Releasing of V-CHIP PASSWORD.
                                         Initialization of the factory.
  VOL. (-) MIN           1
                                         NOTE: Do not use this for the normal servicing.

                                         POWER ON total hours is displayed on the screen.
                                         Refer to the "CONFIRMATION OF USING HOURS".
  VOL. (-) MIN           6
                                         Can be checked of the INITIAL DATA of MEMORY IC.
                                         Refer to the "NOTE FOR THE REPLACING OF MEMORY IC".

                                         Writing of EEPROM initial data.
  VOL. (-) MIN           8
                                         NOTE: Do not use this for the normal servicing.

                                         Display of the Adjustment MENU on the screen.
  VOL. (-) MIN           9
                                         Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).



                                   CONFIRMATION OF USING HOURS
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
                                                                                   ADDRESS    DATA
1. Set the VOLUME to minimum.
2. Press both VOL. DOWN button on the set and Channel                      INIT      00        83          Initial setting content of MEMORY IC.
   button (6) on the remote control for more than 1 second.
3. After the confirmation of using hours, turn off the power.              CRT ON            0010          POWER ON total hours.
                                                                                                            = (16 x 16 x 16 x thousands digit value)
                                                                                                            + (16 x 16 x hundreds digit value)
                                                                                                            + (16 x tens digit value)
                                                                                   FIG. 1                   + (ones digit value)



                             NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.

                 INI   +0    +1    +2      +3    +4    +5    +6      +7      +8     +9       +A      +B    +C    +D    +E    +F

                 00    A1    C3    CF      00    31    B3    27      37      BE     E8       F4      84    00    00    00    46
                 10    40    ---   ---     ---   ---   ---   ---     ---     ---    ---      ---     ---   ---   ---   ---   ---

                                                                   Table 1
1. Enter DATA SET mode by setting VOLUME to minimum.
2. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.
   ADDRESS and DATA should appear as FIG 1.
3. ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN button on the remote, step through the
   ADDRESS until required ADDRESS to be changed is reached.
4. Press ENTER to select DATA. When DATA is selected, it will "blink".
5. Again, step through the DATA using VOL. UP/DOWN button until required DATA value has been selected.
6. Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7. Repeat steps 3 to 6 until all data has been checked.
8. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
The unit will now have the correct DATA for the new MEMORY IC.
                A                                                                                               B                                                                                                                                                   C                                                                                                       D                                                                         E                                                                                                                                                                             F                                                                                                                           G                          H




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                                                                                                                                                                                                                                                                                                       MICON / TUNER SCHEMATIC DIAGRAM                                                                                                                                            (MAIN PCB)                                                                                                                                                                                                                                                                                                      8



                                                                                                               OS101
                      ACCESORY                                                                                                                                                                                                                                                                                                                                                                                                                                             TU001                        NJH3022U268
                                                                                                           PIC-23143SY2




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               3 ADRES




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           1
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                173979-6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   1 AGC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   5 SDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           7 BPL




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                4 SCL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        9 BTL
                                                                                                                                                                                                                                                                                                                                                                                                                                                                15




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           13
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            6 V.S




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           2 NC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       10 NC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      11 IF




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   TEST POINT
                                                                                                                 1 Vout


                                                                                                                                   3 GND
                                                                                                                          2 B+
              BT001




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         8




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               R.OUT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            I2C SDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 I2C SCL


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       I2C OFF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           GND




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     AGC
          R03(AB)E_20_T




                                                                                                                                                                                                                                                                                                                                                                                                                                                                14




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           12
                                                                                                                                                                                                                                                                                                                                                                                                                                        W801




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  NC



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    NC



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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                NC

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                NC
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     0
                                                                                                                                                                                                                                                                                                                                                                                                                                                                     1.3




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      5.0



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              5.0

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               5.0

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               1.3

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               6.2

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  4.6
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   30.0




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                CP101
                                                                                                                                        16V10 KA 0
                                                                                                                      C123 5.0
                                                                                                                           4.9
                                     TM101




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            R006



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        R007
              BT002                SBKMOP006A




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       270


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        270
          R03(AB)E_20_T                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    C007
7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 7




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             6.3V 2200 YK
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          HZ30-3L
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        0.01 B




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        0.01 B

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             D001
                                                                                                                                                                                                                                                                                                                                                                                                                                                                           C008
                                                                                                                            R111




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             C002



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     100P CH

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     100P CH
                                                                                                                                           47
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           TP001




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0.022 M
                                                                                                                                                            R127




                                                                                                                                                                                                                                                                                     R130




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0.01 B
                                                                                                                                                                                                                                                                                                820
                                                                                                                                                                        1K




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      C004




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    C001
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                FROM/TO CHROMA/IF




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     C005

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     C006
                                                                                                                                                                                                                                                       H-BUFFER
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         C003
                                                                                                                                                                                                                                                         Q102                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          R.OUT
                                                                                                                                                                4.8                                                                                                                             4.8
                                                                                                                                                                               0                                                                       2SC2412K




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                27K 1W
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                50V2.2 KA                                                                                                                                              AGC




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 R001
                                                                     RED LED                                                                                                                                                                                                   0




                                                                                                                                                                                                                  33K 1/4W


                                                                                                                                                                                                                                            10K 1/4W
                                                                                                                                                                                                   R129 2.2K




                                                                                                                                                                                                                                                           0.0022 B




                                                                                                                                                                                                                                                                                                                                                                                                                                               C120
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       SCL




                                                                                                                                                                                                                                                                                                                                                                                                                                                      1 B
                                                                                                                                                                                       0.01 Y
                                                                                                                                           V-BUFFER 0                                                                                                                                           0




                                                                                                                                                                                                                    R128

                                                                                                                                                                                                                    R131




                                                                                                                                                                                                                                                             R132
                                                                                                                                                                              C138




                                                                                                                                                                                                                                              C135
                                                                     POWER ON




                                                                                                                                                                                                                                                                          15K
                                                                                                                                              Q101                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     SDA
                                                                       D109
                                                                                                                                           2SC2412K
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       IF
                                                                                                                                                                                                                                                                                                                                                                                                                                                                     R139
                                                                                                                                                                                                                                                                                                                                             MICON                                                                                                                                                                                                                                                                                                                                                                                                                     OSD_R
                                                                 SLR-342VCT32




                                                                                                                                                                                                                                                                                                                                                                                R154

                                                                                                                                                                                                                                                                                                                                                                                       10K
                                                                                                                                                                                                                                                                                                                                     IC101        OEC7054A                                                                                                       1K 1/4W




                                                                                                                                                             0.0022 B
                                                   150 1/4W




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       OSD_G
                                                                                                                                                                                                                                                                                                                                                                                                                             R123



                                                                                                                                                C112
                                                                                                                                                                                                                                                                                                                                                                        0
                                           R137




                                                                                                                                                                                                                                                                                                              4.8
6                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 6




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