Adjustment - Pioneer PDP-501MX Service Manual

4. ADJUSTMENT

4.1 Adjustments of Parts
Note)
In these adjustments, assembly are indicated by the following
symbols.
:ANALOG VIDEO ASSEMBLY
A
:PROGRESSIVE BLOCK
B
:POWER SUPPLY MODULE
J
:Y DRIVE (A) ASSEMBLY
G
:Y DRIVE (B) ASSEMBLY
H
Procedure Adjusting Item
PAL
1
IH DELAY
SECAM
2
ID VOLTAGE
SECAM
3
R-Y DETECTION
SECAM
4
B-Y DETECTION
SECAM BELL
5
FILTER
TINT(NTSC)
6
Demodulation
7
angle (NTSC)
Deflection PLL
8
adjustment
9 Acquisition PLL
adjustment
Input Signal Adjusting Point
VR9001
PAL DEMO pattern
L9003
(SG:Phillips PM5518)
(
A
L9001
SECAM color bar
(
A
L9002
(
A
SECAM black burst
(With color sub carrier)
L9005
(
A
L9008
SECAM color bar
(
A
Chroma modulation VR9002
ramp signal (NTSC) (
A
NTSC
VR9005
EIA colour bar
(
A
(100/0/75/0)
L4715
Any standard signal
(
B
L4706
Any standard signall
(
B
Note: Position for pasting the drive voltage label
Drive voltage label AHW1077
Refer to the separate sheet.
Refer to page 11.
)
Adjust so that the DC voltage of Pin ) of IC9001 becomws maximum.
)
Match the DC level between the video and BLK periods as shown in
the figure at the Q9014 and Q9013 emitters.
)
)
H rate
Adjust so that the color difference waveform protrusion becomes
minimum at the Q9013 emitter.
)
Adjust so that the output of Pin 2 of CN9505 (R-Y signal) becomes
) minimum.
Adjust so that the amplitudes of a and become equal with the output
of Q9518 emitter.
)
Adjust so that the voltage of TP K4701 becomes 2.6 ± 0.1V.
)
Adjust the timing of the waveforms of Pin 3 (CLP) of CN4703 and TP
K4702 (HRA) so that the rising edge of the HRA pulse are at the
center of the CLP pulse.
CLP
)
HRA
PDP-501MX
Adjusting Method
b
a
Center± 0.2µs
9