Pioneer PDP 433CMX, Service Manual

Page: 104 / 177

104
PDP-433CMX
1 2 3 4
C
D
F
A
B
E
1 2 3 4
IC7302
Adjust the level so that the waveform becomes 700 mVp-p.
• Adjust after controlling each IC.
• Perform from Step 1 to Step 6 for each input signal.
Each adjustment value is stored 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 the offset so that the pedestal level becomes constant.
b: Adjust the level so that the waveform becomes 525 mVp-p.
3
B-Y Offset
Adjustment
(IC7130)(SA88)
Color-Bar IC7302 CN7401-pin 5 525mVp-p
a: Adjust the offset so that the pedestal level becomes constant.
b: Adjust the TINT so that the height ratio of each stairstep
waveform becomes constant.
c: Adjust the level so that the 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 the offset so that the pedestal level becomes constant.
b: Adjust the level so that the waveform becomes 525 mVp-p.
6
B-Y Level
Adjustment
(IC7103)
(SA100)
Color-Bar IC7103 CN7401-pin 5 525mVp-p
a: Adjust the offset so that the pedestal level becomes constant.
b: Adjust the TINT so that the height ratio of each stairstep
waveform becomes constant.
c: Adjust the Level so that the waveform becomes 525 mVp-p.
525mVp-p
525mVp-p
525mVp-p
525mVp-p
6.3 ADJUSTMENT
6.3.1 VIDEO CARD ADJUSTMENT