Sony PLM-A55E, Руководство по обслуживанию

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[B Brightness Adjustment]
Note: The view angle correction must be turned off.
Before this adjustment, the Contrast Adjustment must be finished.
Condition:
Input signal
Chroma signal, and color bar signal with burst
signal turned off
Measurement point RG-46P board CN404 pin
4
and pin
6
Measuring equipment Oscilloscope
Adjustment page D
Adjustment address 26
Specification value ± 0.05 V
Connection:
Adjustment Procedure:
(1)
Select EXT. VIDEO AUDIO mode, and picture and tone qual-
ity standard setting. (See page 22)
(2) View angle correction OFF: Connect CN404 pin
2
(EAC OFF)
and pin
1
(GND) on the RG-46P board.
(3) Connect CH1 of oscilloscope to the CN404 pin
4
, and CH2
to the CN404 pin
6
on the RG-46P board.
(4) Set (or confirm) data: 01 to page: 1, address: 00.
(Cancel D page protect)
(5) On page: D, address: 26, change data with the PLAY and STOP
buttons and press the PAUSE button to write data so that a
difference between
E
' level of waveform on the CH2 of os-
cilloscope and
E
level (
E
level of RGB Brightness Adjust-
ment) on the CH1 satisfies the specification value.
Adjustment and Adjustment Parts: RG-46P board (see page 33)
Ch1 Ch2
CN404 pin
6
(B OUT)
CN404 pin
1
(GND)
RG-46P Board
Oscilloscope
(DC range)
CN404 pin
4
(G OUT)
CN404 pin
1
(GND)
2H
E
'
Oscilloscope
(DC range)
+
–
RG-46P Board
CN404 pin
4
(G OUT)
CN404 pin
1
(GND)
D
2H
[Contrast Adjustment]
Note: The view angle correction must be turned off.
Condition:
Input signal
Chroma signal, and color bar signal with burst
signal turned off
Measurement point RG-46P board CN404 pin
4
Measuring equipment Oscilloscope
Adjustment page D
Adjustment address 24
Specification value 3.05 ± 0.10 V
Connection:
Adjustment Procedure:
(1)
Select EXT. VIDEO AUDIO mode, and picture and tone qual-
ity standard setting. (See page 22)
(2) View angle correction OFF: Connect CN404 pin
2
(EAC OFF)
and pin
1
(GND) on the RG-46P board.
(3) Connect an oscilloscope to the CN404 pin
4
on the RG-46P
board.
(4) Set (or confirm) data: 01 to page: 1, address: 00.
(Cancel D page protect)
(5) On page: D, address: 24, change data with the PLAY and STOP
buttons and press the PAUSE button to write data so that the
D
level of waveform on the oscilloscope satisfies the specifi-
cation value.
Adjustment and Adjustment Parts: RG-46P board (see page 33)