AOC CM-736 Service Manual page 13

2. Interior General Adjustment:
Conditions: (a) Set timing in Mode 14 (75K)
(b) H-size VR be set in Max. position; brightness and contrast VR be set in Min.
position.
(1) Fail safe (TP804 - GND voltage)
adjust VR805 to be 9.3 VDC.
(2) H F/V reference voltage (TP803 - GND voltage)
adjust VR801 to be 12.5 VDC.
(3) V F/V reference voltage (TP601 - GND voltage)
adjust VR603 to be 10 VDC.
Conditions': (a) Set timing in Mode 14 (75K)
(b) H-size and brightness be set in Max. position; contrast be set in Min.
(4) Cathode cutoff (TP703 - GND voltage)
adjust VR703 to be -25 VDC.
3. Free Running:
(1) Timing Model 2 (57K)(Connect the pin between TP801 and TP802)
adjust VR802 till the image are clear and not slanting to left or right.
(2) Timing Mode 4 (35K) (Connect the pin between TP801 and TP802)
adjust VR803 till the image are clear and not slanting to left or right.
4. RASTER CENTERING:
Conditions: (a) Set the H-size VR in Min. position.
(b) Set the timing in Mode 11 (48.3K)
Adjust the VR810 till the raster in the center (if fail, reverse the H16 connector and try
again).
5. Pincushion Adjustment
Condition: (a) Set timing in Model 1(48.3K)
(b) adjust external VR to make the V-size height to be 225 ± 15 mm.
(1) Side pincushion
adjust VR602 (correct the symmetry of side pincushion) and VR604 (correct the vertical
straight lines of both side).
position.
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