Operation Checks After Repair Service; Check Items - Sony KE-42M1 Service Manual

6. Operation Checks After Repair Service

6-1. Check Items

xxxxx
TCP
Drive board
Y Buffer
Module
assemble check
Logic and Logic Buffer
Harness
Foreign materials
6-2. Check Procedure
1) Check visually the following: (1) the module is correctly assembled, (2) the
connections have no problem, and (3) the grounding and easily short-circuited parts
are not damaged.
2) Check that the dip switch is inside the module.
3) Turn on the power of the PDP module, and check that the LED lights up and the unit
correctly functions.
4) Check the power voltages, and also check the display condition by tapping slightly the
Y-FPC several times.
5) Check that Full White pattern is normal.
6) If the pattern is abnormal, adjust each voltage using the multi-meter and adjustment
tools.
7) Adjust the waveforms using the oscilloscope.
8) Display each pattern image to check the discharge on the screen.
9) Vary video level of input signal and make sure image is displayed correctly without
any problems.
Check Item
Securely connected or tightened
Securely connected
No foreign materials
- 38 -
Specification Remarks