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6. Procedures before and after replacing the PC I/F unit
1) Before replacing the PC I/F unit, write down the values for the parameters listed on the 2nd and 3rd pages of
the Adjustment Process A screen.
If the values for the parameters cannot be written down because the PC I/F unit is completely broken or for any
other reason, make all the adjustments in accordance with the paragraph for Adjustment procedure and
parameters, rather than the following procedures. (End)
Set the parameters listed on the 2nd and 3rd pages of the Adjustment Process A screen to the values you have
written down.
7. Adjustment parameters
1) Analog adjustment
(1) Prior adjustment for AVC system chassis
Adjustment item
1
Destination check
2
AVC center 3.3V
adjustment
3
AVC center 2.5V
adjustment
(2) PAL signal adjustment
Adjustment item
1
Setup
2
Tuner Y level
adjustment
3
PAL Y CONTRAST
adjustment
4
PAL COLOR GAIN
adjustment
5
MAIN CR GAIN PAL
adjustment
6
MAIN CONTRAST
adjustment
7
SUB PAL Y adjustment
8
SUB PAL COLOR
GAIN adjustment
Description
Connect DC voltmeter to
TP1702.
Connect DC voltmeter to
TP1701.
Description
Press the DUAL screen button.
17
Adjustment procedure
1. Call the process adjustment mode.
2. Check that the destination is "Europe".
Adjust output voltage of DC/DC 5 V line to
3.3 V.
Adjusted value: 3.25~3.29 V
Adjust output voltage of DC/DC 2.5 V line to
2.6 V.
Adjusted value: 2.60~2.64 V
Adjustment procedure
1. Set colour system to "PAL".
2. Select PAL source.
100% colour bar signal including 100% white, such
as split field colour bar
1. Adjust TP1101 so that the Y signal without the
chroma component should be 1.00 ±0.05 Vp-p
(between the bottom of sync signal and the white
peak).
1. Adjust TB1274_MAIN output (TP803) to
0.7 ±0.05 Vp-p.
1. Adjust TB1274_MAIN
output (TP802) to
0.35 ±0.025 Vp-p.
0.35V
1. Adjust TB1274_MAIN output
(TP801) to 0.35 ±0.05 Vp-p.
0.35V
Turn off the PEAK ACL control. Adjust the output
(TP815) of IC810 to have 1.1 ±0.05 Vp-p from the
pedestal level.
Select the special DUAL screen settings for adjustment
(so that the same video source is reflected on MAIN/
SUB).
1. Adjust TB1274_SUB output (TP806) to
0.9 ±0.05 Vp-p.
1. Adjust TB1274_SUB output (TP805) to
0.9 ±0.05 Vp-p.
PZ-43MR2E
PZ-50MR2E
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