Pioneer AVD-W6200, Руководство по обслуживанию

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1
2 3 4
1 2 3 4
F
E
D
C
B
A
AVD-W6200/UC
Step
Adj. item
Measuring point
Adj. point
Adjustment method and specification
Remarks
16 17
TP: PD IC203 Pin4
TP: COM
Free-run PD voltage confirmation COM amp rough adjustment
With no sync applied, observe the voltage at the test point PD.
Measure the center DC voltage of the Vcom signal.
18
TP: VCOM (COM)
Vcom_DC rough adjustment
VR251
4.5V
±
0.2V
1.8V
±
0.1V (DC)
GND
19
OSDSW
PD voltage adjustment
TP: PD IC203 Pin4
L203
H
H
With the sync (checker signal) and external video signal input, adjust the voltage within the spec: the voltage obtained at the step 16
±
0.01V DC.
The NTSC signal should be used for the UC models and the P
A
L signal is for the
EW models.
20
RGB input level confirmation
L
L L
RIN2, GIN2, and BIN2
RGB: 10-step signal
860mV
86mV/1step
0.86V
±
0.05V P-P
The RGB contrast cannot be adjusted in the IC. Increasing the amplitude of the TYP input (0.70Vp-p) enables quasi-contrast adjustment.
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