Sony DCR-TRV738E Service Manual page 117

4-3. APC & AEQ Adjustment (VC-278 board)
Mode Playback
Signal Recorded signal at "Preparations
before adjustments"
Measurement Point Pin qh of CN1108 (RF MON) (Note 1)
Ext. trigger: Pin qd of CN1108 (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"
Note1: Connect a 75Ω resistor between Pin qh and Pin w; (GND) of
CN1108.
75Ω resistor (Parts code: 1-247-804-11)
Note2: 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 20
3 C 19 20
4 C 1B 25
5 C 1C 25
6 C 21 CA
7 C 2C 03
8
9 7 62 01
10 3 33 08
11
12 3 01 07
13 3 02
14 3 03
15
Note3: If the data is other than "00", adjustment has errors.
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.
Set the data.
Confirm that the playback RF
signal is stable. (Fig. 5-3-4.)
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".
DCR-TRV738E/TRV740/TRV740E/TRV840
4-4. Processing after Completing Adjustments
Order Page Address Data
1 0 01
2 7 62
3 3 33
4 8 21
5 0 01
Pin qh
Pin qd
5-51
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.
PB RF signal is stable
13.3 msec
Fig. 5-3-4.