CCD-TRV128 (serv.man2) - Sony Movie Service Manual (repair manual). Page 33

6-31

Before perform the video system adjustments, check that the data
of page: 0, address: 10 is “00”.
If not, select page: 0, address: 10, and set the data “00”.
Video system adjustments must be performed in the following or-
der.

Adjusting Procedure:
1. 28 MHz origin oscillation adjustment
2. AFC f

0

 adjustment

3. S VIDEO OUT Y level adjustment
4. S VIDEO OUT C level adjustment
5. VIDEO OUT level check
6. REC Y current adjustment
7. REC C/AFM current adjustment

Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color
will become inconsistent.

Mode

VTR stop (PLAY/EDIT mode)

Signal

No signal

Measurement Point

Pin qa of IC151

Measuring Instrument

Frequency counter

Adjustment Page

F

Adjustment Address

10

Specified value

f = 14318181 

± 68 Hz (NTSC model)

f = 14187500 

± 54 Hz (PAL model)

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

Refer to “2. DISASSEMBLY”, when opening the VC-
341 board.

Order Page Address Data

Procedure

1

0

01

01

2

F

10

Change the data and set the
frequency (f) to the specified
value.

3

F

10

Press PAUSE button.

4

0

01

00

Adjust the pull-in range of A/D converted clock generator during
playback.

Mode

VTR stop (PLAY/EDIT mode)

Signal

No signal

Measurement Point

Displayed data of page: 3, address: 03

Measuring Instrument

Adjusting remote commander

Adjustment Page

C

Adjustment Address

19

Specified value

The data of page: 3, address: 03 is “00”

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

Order Page Address Data

Procedure

1

Close the cassette compartment
without inserting cassette.

2

0

01

01

3

3

01

82

Press PAUSE button.

4

3

02

Check the data changes to
“00”.

5

3

03

Check that the data is “00”.
(Note 2)

6

0

01

00

If the data is other than“00”, adjustment has errors.

IC151

13

12 11 1

36

25

24

48

37

Measurement
Point

VC-341 BOARD (SIDE B)