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Ë Ë Ë Ë Ë 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.
Ë Ë Ë Ë Ë Adjustment parameters
1) Analog adjustment
(1) Prior adjustment for AVC system chassis
Adjustment item
1
Process adjustment
mode
2
AVC center 3.3V
adjustment
3
AVC center 2.5V
adjustment
(2)
N358 signal adjustment
Adjustment item
1
Setup
2
Tuner level adjustment
3
MAIN N358 Y
CONTRAST
adjustment
4
MAIN N358 COLOR
GAIN adjustment
5
MAIN N358 TINT
adjustment
Description
Connect DC voltmeter to
TP1702.
Connect DC voltmeter to
TP1701.
Description
» MAIN side
» SUB side
19
Adjustment procedure
Call the process adjustment mode.
Adjust output voltage of DC/DC 3.3 V line to
3.25 ±0.01 V.
Adjust output voltage of DC/DC 2.5 V line to
2.6 ±0.01 V.
Adjustment procedure
1. Receive the SPLIT FIELD color bar signal.
white 100%, 75% color bar, modulation
1. Adjust the V-LEVEL (R1121) control so that the tuner output
(TP1101) on the AV PWB (DUNTKA616) should be
1.0 ±0.02 Vp-p.
2. Adjust the V-LEVEL (R1219) control so that the tuner output
(TP1201) on the AV PWB (DUNTKA616) should be
1.0 ±0.02 Vp-p.
1. Adjust TB1274_MAIN output (pin (1) of P801)
to 0.7 ±0.01 Vp-p.
1. Adjust TB1274_MAIN output (pin (3) of P801) so that the
level shown below should be 0.3 ±0.01 Vp-p.
1. Adjust TB1274_MAIN output (pin (3) of P801) so that the
waveform should become as shown below.
PZ-MR2T
PZ-43MR2U
PZ-50MR2U
1.0Vp-p
0.7Vp-p
0.3Vp-p
Smoothed
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