CCD-TRV128 (serv.man2) - Sony Movie Service Manual (repair manual). Page 38

6-36

 Check that the data of page: 0, address: 10 is “00”.

Order Page Address Data

Procedure

1

Set to the VTR stop mode.

2

0

01

01

3

A

1A

Set data noted down at step 7
of “7-1. Preparations”, and
press PAUSE button.

4

7

10

E2

Press PAUSE button.

5

A

10

00

Press PAUSE button.

6

C

14

00

Press PAUSE button.

7

0

01

00

Check the recording current level of the REC AFM signal.
If it is too low, the audio S/N will be deteriorated. If too high,
color beets will be produced on self recording/playback image.

Mode

VTR recording (PLAY/EDIT mode)

Signal

No signal

Measurement Point

REC RF (Pin 7 of CN007)

Measuring Instrument

Oscilloscope
(20 MHz BW LIMIT: OFF)

Adjustment Page

C

Adjustment Address

25

Specified value

NTSC model
A = (REC chroma signal level) 

× 0.292

± 0.9 mVp-p (Note 1)

PAL model
A = (REC chroma signal level) 

× 0.309

± 0.9 mVp-p (Note 1)

Check that the data of page: 0, address: 10 is “00”.

REC chroma signal level is noted down at step 9 of “REC
C Current Check”

Order Page Address Data

Procedure

1

Close the cassette compartment
without inserting cassette.

2

Set to the VTR recording
mode. (Note 3)

3

0

01

01

4

3

92

20

5

3

01

41

Press PAUSE button.

6

C

25

Change the data and set the
REC AFM signal level (A) to
the specified value.

7

C

25

Press PAUSE button.

8

3

01

00

Press PAUSE button.

9

3

92

00

10

0

01

00

11

Perform “Processing after
Completed Adjustment”.

Use the REC buttons of the adjustment remote com-
mander (with HOLD switch set in the OFF position).

A

0.67 

µ

sec

Center of the luminance line width