Rec Afm Current Adjustment (Vc-272 Board); Processing After Completed Adjustment - Sony Handycam CCD-TRV107 Service Manual

CCD-TRV107/TRV108/TRV308/TRV408/TRV608

6-3. REC AFM Current Adjustment (VC-272 board)

Set the recording levels of the REC AFM signal. If the level is too
low, the audio S/N will be deteriorated. If too high, color beets will
be produced on the self-recording / playback image.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: REC chroma signal level is written down at step 9 of "REC C
Current Check".
Note2: Insert a plug into the S VIDEO or the A/V jack.
Adjusting method:
Order Page Address Data
1
2 0 01
3 2 01
4 E 9F
5 E 9F
6 F 69
7 F 69
8 E 9F
9 2 01
10 0 01
11
Note3: Use the REC buttons of the adjustment remote commander (with
the HOLD switch set in the OFF position).
A
VTR recording (SP mode)
No signal
REC RF (Pin 7 of CN713)
Oscilloscope
(20 MHz BW LIMIT: OFF)
F
69
A = (REC Chroma signal level) ×
0.292 ± 0.9mV (Note1)
Procedure
Insert a tape, and set to recording
mode. (Note3)
01 Set the data.
41 Set the data, and press PAUSE
button.
Write down the data.
07 Set the data, and press PAUSE
button.
Change the data and set the REC
AFM signal level (A) to the
specified value.
Press PAUSE button.
Set the data written down at step
4, and press PAUSE button.
00 Set the data, and press PAUSE
button.
00 Set the data.
Perform "Processing after
completed adjustment".
Center of the luminance line width
0.67 µsec
Fig. 5-3-10.

6-4. Processing after completed adjustment

Order Page Address Data
1 0 01
2 D 14
3 D 15
4 0 01
5-38
Procedure
01 Set the data.
Set the data written down at step
2 of "6-1. Preparations", and press
PAUSE button.
Set the data written down at step
4 of "6-1. Preparations", and press
PAUSE button.
00 Set the data.