DCR-TRV130, DCR-TRV130E (serv.man2) - Sony Movie Service Manual (repair manual). Page 121

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5-42
5-3. APC & AEQ Adjustment (VC-256 Board)
Mode
Playback
Signal
Recorded signal at “Preparations
before adjustments”
Measurement Point
PB RF (MON) (Pin 9 of CN1011) (Note 1)
Ext. trigger: SWP (Pin qh  of CN1011)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
18, 19, 1B, 1C, 21, 2C
Specified Value
The data of page: 3, address: 03 is “00”
Note 1:
Connect a 75
 resistor between PB RF (MON) and GND of CPC
jig.
75
 resistor (Parts code: 1-247-804-11)
Note 2:
The “AGC Center Level Adjustment” must have already been
completed before starting this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
18
25
Set the data, and press PAUSE button.
3
C
19
25
Set the data, and press PAUSE button.
4
C
1B
25
Set the data, and press PAUSE button.
5
C
1C
25
Set the data, and press PAUSE button.
6
C
21
CA
Set the data, and press PAUSE button.
7
C
2C
03
Set the data, and press PAUSE button.
8
Playback the recorded signal at
“Preparations before adjustments”
9
2
2E
01
10
3
33
08
Set the data.
11
Confirm that the playback RF
signal is stable. (Fig. 5-3-5.)
12
3
01
07
Set the data, and press PAUSE button.
13
3
02
Check that the data changes from
“07” to “00” in about 20 seconds
after pressing PAUSE button.
14
3
03
Check that the data is “00”.
(Note3)
15
Perform “Processing after
Completing Adjustments”.
Note 3:
If the data is other than “00”, adjustment has errors.
Fig. 5-3-5.
PB RF
SWP
6.6 msec 
PB RF signal is stable
5. AGC Center Level and APC & AEQ Adjustment
5-1. Preparations before adjustments
Mode
Camera recording
Subject
Arbitrary
Note:
Use a Hi8 MP tape.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
8
2A
C8
Set the data.
3
Record the camera signal for three
minutes.
5-2. AGC Center Level Adjustment (VC-256 Board)
Mode
Playback
Signal
Recorded signal at “Preparations
before adjustments”
Measurement Point
PB RF (MON) (Pin 9 of CN1011) (Note 1)
Ext. trigger: SWP (Pin qh  of CN1011)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
1E
Specified Value
The data of page: 3, address: 03 is “00”
Note 1:
Connect a 75
 resistor between PB RF (MON) and GND of CPC
jig.
75
 resistor (Parts code: 1-247-804-11)
Adjusting method:
Order Page Address Data
Procedure
1
Playback the recorded signal at
“Preparations before adjustments”
2
0
01
01
Set the data.
3
2
2E
01
Set the data.
4
3
33
08
Set the data.
5
Confirm that the playback RF
signal is stable. (Fig. 5-3-4.)
6
3
01
23
Set the data, and press PAUSE button.
7
3
02
Check that the data is “00”.
8
3
03
Check that the data is “00”.
(Note2)
9
Perform “APC & AEQ Adjustment”.
Note 2:
If the data of page: 3, address: 03 is other than “00”, adjustment
has errors.
PB RF
SWP
6.6 msec 
PB RF signal is stable
Fig. 5-3-4.
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