Agc Center Level Adjustment (Vc-273 Board) - Sony DCR-TRV140 Service Manual

Ver 1.1 2003. 06

5. AGC Center Level Adjustment (VC-273 board)

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Mode CAMERA record and VTR playback
Subject Arbitrary
CH1: PB RF (MON) (Pin 9 of
Measurement Point CN1011) (Note 1)
CH2 (Trigger): SWP (Pin 5 of
CN1011)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 1E
The data of page: 3, address: 03 is
Specified value
"00"
Note 1: Connect a 75 Ω resistor between PB RF (MON) and GND
of I/F unit for LANC control.
Note 2: Use a Hi8 MP tape.
Adjusting method:
Order Page Address Data
1 0 01 01
2 8 2A C8
3
4 2 2E 01
5 3 33 08
6
7
8 3 01 23
9 3 02
10 3 03
11 3 33 00
12 2 2E 00
13 8 2A 00
14 0 01 00
Note 3: If the data is other than "00", adjustment has errors.
PB RF signal is stable
PB RF
(MON)
SWP
13.3 msec
Fig. 5-3-4
Procedure
Press PAUSE button.
Record camera signal for 1
minute, and rewind the tape.
Playback the recorded
segment at step 3.
Confirm that the playback
RF signal is stable.
Press PAUSE button.
Check the data changes to
"00"
Check the data is "00".
(Note 3)
Press PAUSE button.
DCR-TRV140/TRV140E/TRV140M
5-43