Sony GV-D200 Service Manual page 57

4-3. APC & AEQ Adjustment (VC-250 Board)
Mode Playback
Signal Recorded signal at "Preparations
before adjustments"
Measurement Point Pin qh of CN933 (RF MON) (Note 1)
Ext. trigger: Pin qd of CN933 (DV RF
SWP)
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 75Ω resistor between Pin qh and Pin 6 (GND) of
CN933.
75Ω 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
1 0 01 01
2 C 18 25
3 C 19 25
4 C 1B 25
5 C 1C 25
6 C 21 CA
7 C 2C 03
8
9 2 2E 01
10 3 33 08
11
12 3 01 07
13 3 02
14 3 03
15
Note 3: If the data is other than "00", adjustment has errors.
PB RF signal is stable
Pin qh
Pin qd
Fig. 5-3-6.
Procedure
Set the data.
Set the data, and press PAUSE button.
Set the data, and press PAUSE button.
Set the data, and press PAUSE button.
Set the data, and press PAUSE button.
Set the data, and press PAUSE button.
Set the data, and press PAUSE button.
Playback the recorded signal at
"Preparations before adjustments"
Set the data.
Confirm that the playback RF
signal is stable. (Fig. 5-3-6.)
Set the data, and press PAUSE button.
Check that the data changes from
"07" to "00" in about 20 seconds
after pressing PAUSE button.
Check that the data is "00".
(Note3)
Perform "Processing after
Completing Adjustments".
13.3 msec
4-4. Processing after Completing Adjustments
Order Page Address Data
1 0 01
2 2 2E
3 3 33
4 8 2A
5 0 01
5-22
Procedure
01 Set the data.
00 Set the data.
00 Set the data.
00 Set the data, and press PAUSE
button.
00 Set the data.