Sharp LC 10A2U How to enter the service mode, schematic, service adjustments LCD color television S40Z6LC-10A2U

Sharp LC10A2U LCD TV, disassembly, service mode adjustments, full schematic

Power consumption ............ 24W (Connected to DC 12V)

LCD panel size .................. 10.4" TFT LCD

Video color systems............ PAL/NTSC/SECAM

CATV Channels .................1 thru 125. (EIA, Channel Plan U.S.A)
Remote control - RRMCG1559CESA

Disassembly

1. Remove the five lock screws (1) off the cabinet B.
2. Push on the six hooks (2) of the cabinet B and open it slightly.
3. Disconnect all the connectors (3) from the terminal and operation PWBs. Detach the cabinet B.
4. Disconnect all the connectors (4) from the main PWB.

5. Remove the four lock screws (5) off the main PWB.
6. Peel off the five pieces of tape (6) and detach the LC display unit.
7. Remove the two lock screws (7) off the remote control PWB.
8. Remove the four lock screws (8) off the terminal PWB.
9. Remove the two lock screws (9) off the operation PWB.
10. Remove the two lock screws (10) off the flexible shield, and detach he relay PWB.

11. Remove the lock screw (11) off the LC display unit.
12. Undo the seven hooks (12) to release the unit frame.
13. Detach the fluorescent lamp (13).

Adjusting method

The best adjustment is made before shipping. If any position deviation is found or after part replace is performed, adjust as follows.

Use the exclusive-use AC adapter or stable DC power supply.
AC adapter: UADP-0211CEZZ
DC power supply: 12 +/-- 0.5V

Special mode setting procedure

After initialization of E2PROM the mode is changed to the adjustment mode.
[Procedure]
Connect TP2001 and TP2002 to GND, and turn on the power.
• The initialization of microcomputer is as follows.
• AV position, DAC data, G/A data, sound processor data, and video chroma data adjustment values are taken as defaults.

Adjustment mode
Short-circuit TP2001 to GND, and turn on the power.
Or short-circuit TP2002 to GND, and turn on the power.
Or holding down the [TV/VIDEO] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [CH DN] key and [VOL– ] key to change the mode to the adjustment mode.
The manual adjustment or adjustment through communication with the automatic machine is performed.

Inspection mode
[Procedure]
Holding down the [TV/VIDEO] key and [MENU] key, turn on the power.

• In the ordinary menu select “VIDEO ADJUST” with the [CH] key, and decide with the [VOL] key. Then select “PICTURE”, “TINT (only NTSC)”, “COLOR”, “BLACK LEVEL”, “SHARPNESS”, “RED-BLUE”, “GREEN” and “COLOR SYSTEM” with the [CH] key, and decide with the [VOL] key. After that, adjust values with the [VOL] key.
• VOLUME, PICTURE, TINT (only NTSC), COLOR, BLACK LEVEL, SHARPNESS, RED-BLUE, GREEN change as follows.

Shipping setting mode

Holding down the [TV/VIDEO] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [CH UP] key and [VOL+] key to change the mode to the adjustment mode.

User adjustment and other values are taken as defaults.
If TV is indicated as SETTING COMPLETE, setting has been completed.

To Cancel of special mode; Turn off the main unit power.

Shipping setting list and service adjustments

When the exclusive-use AC adapter is used, the color bar signal of color bar generator for service is input to get the normal screen. When the audio is minimized, the voltage value is measured with the 20 kΩ/V tester.

When the exclusive-use AC adapter is used, the color density, lightness and color hue are set to the center position, and the signal of color bar generator for service is observed to get waveform.

Schematic full