Adjustment; Ccd Adjustment - Plus M-10S Service Manual

5-1. CCD Adjustment

Adjustment is required in the following cases. (Calibration operation is also required after adjustment.)
•When a CCD Unit is replaced
•When adjustment got out of order due to the failure during arrival of products
•When the picture quality deteriorates remarkably
Calibration operation is required in the following cases.
•When a fluorescent lamp is replaced
•When the main board is replaced
•When the picture quality deteriorates slightly (The deterioration in picture quality may not be improved.)
Preparation
•Oscilloscope •Screwdriver (+)
Turn ON the power of an oscilloscope. Clean the plate surface.
* Insufficient cleaning influences the subsequent calibration. Color irregularity may sometimes occur in this
case.
CCD adjustment procedure
1) Remove the back panel. (See 4. Disassembly and Assembly.)
2) Connect the probe of an oscilloscope to the CCD Board.
(See the table below and the figure on right.)
GND Measurement pin
Ch1
Trigger or CH2
Setting of oscilloscope
Ch1
Trigger
Sweep
* The trigger corresponds to EXT or Ch2.
Only Ch1 is displayed.

5. ADJUSTMENT

•Scale
J6 J4
J8 J7
Mode
0.5 V/DIV AC
2 V/DIV DC
500 µs/DIV
J8
15
J5 J4
J3
J6
J7