Agc Center Level Adjustment (Vc-288 Board); Apc & Aeq Adjustment (Vc-288 Board) - Sony DCR-TRV940 Adjustment Manual

4-2.

AGC Center Level Adjustment (VC-288 board)

RadarW RadarW RadarW
RadarW RadarW
Mode VTR playback
Subject Recorded signal at "Preparations
before adjustments"
Measurement Point CH1: Pin w; of CN1008 (RF MON)
(Note 1)
CH2 (Trigger): Pin qj of CN1008
(SWP)
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 Ω resistor (1-247-804-11) between Pin
w; and Pin ql (GND) of CPC jig.
Adjusting method:
Order Page Address Data
1
2 0 01 01
3 3 33 08
4
5 3 01 23
6 3 02
7 3 03
8 0 01 00
Note 2: If the data is other than "00", adjustment has errors. (Take
an appropriate remedial measures according to the er-
rors referring to the following table)
Data of page: 3,
Contents of defect
address: 03
20 Perform re-adjustment. (Note 3)
30 The machine is defective.
40 Perform re-adjustment. (Note 3)
50 The machine is defective.
Note 3: If this data displayed twice successively, the machine is
defective.
PB RF signal is stable
CH1
Pin w;
CH2
Pin qj
Fig. 6-3-5
Procedure
Playback the recorded signal
at"Preparations before
adjustments".
Confirm that the playback
RF signal is stable.
(Fig. 6-3-5)
Press PAUSE button.
Check the data changes to "00"
Check the data is "00". (Note 2)
Perform "APC & AEQ
Adjustment".
6.7 msec
DCR-TRV940/TRV940E/TRV950/TRV950E
4-3. APC & AEQ Adjustment (VC-288 board)
RadarW RadarW RadarW
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified value
Note 1: Connect a 75 Ω resistor (1-247-804-11) between Pin w;
and Pin ql (GND) of CPC jig.
Note 2: Perform "AGC Center Level Adjustment" before this ad-
justment.
Adjusting method:
Order Page Address Data
1
2 0 01
3 3 33
4
5 3 01
6 3 02
7 3 03
8 7 30
9 3 33
10 0 01
Note 3: If the data is other than "00", adjustment has errors.
(Take an appropriate remedial measures according to the
errors referring to the following table)
Data of page: 3,
address: 03
20
30
50
60
80
Note 4: If this data displayed twice successively, the machine is
defective.
6-59
VTR playback
Recorded signal at "Preparations
before adjustments"
CH1: Pin w; of CN1008 (RF MON)
(Note 1)
CH2 (Trigger): Pin qj of CN1008
(SWP)
Oscilloscope
C
18, 19, 1B, 1C, 21, 2C
The data of page: 3, address: 03 is "00"
Procedure
Playback the recorded signal
at"Preparations before
adjustments".
01
08
Confirm that the playback RF
signal is stable. (Fig. 6-3-5)
07 Press PAUSE button.
Check the data changes from
"07"to "00" in about 20
seconds after pressing
PAUSE button
Check the data is "00". (Note 3)
00
00
00
Contents of defect
Perform re-adjustment. (Note 4)
The machine is defective.
Perform re-adjustment. (Note 4)
The machine is defective.
The machine is defective.