Pioneer PDA-5002, Service Manual

Page: 102 / 183

102
PDP-503CMX, PDP-503MXE, PDA-5002
IC7302
Adjust Level so that the peak to peak of waveform becomes
700 mVp-p.
6.3 ADJUSTMENT
6.3.1 Video Card Adjustment
• Adjust after controlling each IC.
• Perform it from step 1 to step 6 every each input signal.
Each adjustment value which adjusted, store the adjustment data in IC7104.
NTSC PAL SECAM 443NTSC PALM PALN NTSC PAL
INPUT4 INPUT3
a
700mVp-p
c
a
a
b
b
b
b
a
b
c
a
b
b
b
Step
Adjustment
Item
Input
Signal
Control
Measuring
Point
Adjusting
Value
Adjusting Method
1
Y Level
Adjustment
(IC7130)(SA83)
RAMP CN7401-pin 3 700mVp-p
2
R-Y Offset
Adjustment
(IC7130)(SA88)
Color-Bar IC7302 CN7401-pin 7 525mVp-p
a: Adjust Offset so that the pedestal level becomes fixed.
b: Adjust Level so that the peak to peak of waveform becomes
525 mVp-p.
3
B-Y Offset
Adjustment
(IC7130)(SA88)
Color-Bar IC7302 CN7401-pin 5 525mVp-p
a: Adjust Offset so that the pedestal level becomes fixed.
b: Adjust TINT so that the height ratio of each stair step
waveform becomes fixed.
c: Adjust Level so that the peak to peak of waveform becomes
525 mVp-p.
4
TINT
Adjustment
(IC7130)(SA80)
5
R-Y Level
Adjustment
(IC7103)
(SA101)
Color-Bar IC7103 CN7401-pin 7 525mVp-p
a: Adjust Offset so that the pedestal level becomes fixed.
b: Adjust Level so that the peak to peak of waveform becomes
525 mVp-p.
6
B-Y Level
Adjustment
(IC7103)
(SA100)
Color-Bar IC7103 CN7401-pin 5 525mVp-p
a: Adjust Offset so that the pedestal level becomes fixed.
b: Adjust TINT so that the height ratio of each stair step
waveform becomes fixed.
c: Adjust Level so that the peak to peak of waveform becomes
525 mVp-p.
525mVp-p
525mVp-p
525mVp-p
525mVp-p