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6-3. Video Adjustment
3-1.
Voltage adjustment
• Apply 8.4 ± 0.3 Vdc to the CN102 !™ pin.
Input
No signal
Measurement point
Both ends of C128
Measuring equipment
Digital voltmeter
Adjustment device
RV101
Specification value
4.89 ± 0.01 Vdc
3-2.
APC Free-run Frequency Adjustment
(Y/C SEP)
Input
No signal (Remove FB115)
Q701 C
Measurement point
Measuring equipment
Frequency counter
Adjustment device
RV501
14318180 ± 100 Hz (NTSC)
Specification value
17734480 ± 100 Hz (PAL)
• After adjustment, mount FB115.
3-4.
Adjustment Related Parts Arrangement
AV-40/40P BOARD (Side A)
AV-40/40P BOARD (Side B)
12
21
(GND)
APC Free-run Adjustment
(OSD)
CT301
9
5
4
APC Free-run Adjustment
IC307
3-3.
APC Free-run Frequency Adjustment (OSD)
• Confirm that the OSD is not displayed on the monitor TV.
• Short IC303 5 pin and IC307 9 pin to the GND.
• Apply 2.4 ± 0.05 Vdc to the IC307 4 pin.
Input
Measurement point
Measuring equipment
Adjustment device
Specification value
Voltage
Adjustment
'
RV101
C128
'
(Y/C SEP)
RV501
C
Q701
6-2
Y signal (no burst)
IC307 5 pin
Frequency counter
CT301
3579545 ± 50 Hz (NTSC)
4433619 ± 50 Hz (PAL)
FB115
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