GV-D200 - Sony VCR Service Manual (repair manual). Page 113

5-23

Mode

VTR stop

Signal

Arbitrary

Measurement Point

Display data of page: 3, address: 03

Measuring Instrument

Adjustment remote commander

Adjustment Page

C

Adjustment Address

1F, 20, 22, 29

Specified Value

Bit2, bit3 and bit6 are “0”

1

0

01

01

Set the data.

2

3

01

30

Set the data, and press PAUSE
button.

3

3

02

Check that the data changes to
“00”.

4

3

03

Check that bit2, bit3 and bit6 are
“00”.

(Note)

5

0

01

00

Set the data.

If bit2, bit3 or bit 6 of the data is “1”, there are errors.
For the error contents, see the following table. (For the bit values, refer
to “5-4. SERVICE MODE”, “4-3. 3. Bit value discrimination”. )

Bit value of page: 3,

Error contents

address: 03

bit 2 = 1

PLL fo final adjustment is defective

bit 3 = 1

PLL fo final adjustment is defective

bit 6 = 1

LPF fo is defective

If deviated in this case causes switching noise or jitter on the Hi8/
Standard8 mode played back screen.

Mode

Playback

Signal

Hi8/Standard8 alignment tape:
For tracking adjustment
(WR5-1NP(NTSC))(WR5-1CP(PAL))

Measurement Point

CH1: Pin 8 of CN933 (VC RF SWP)
CH2: Pin 5 of CN933 (PB RF)

Measuring Instrument

Oscilloscope

Adjustment Page

F

Adjustment Address

62, 63

Specified Value

t1=0 ± 10µ sec

1

Set to the stop mode.

2

0

01

01

Set the data.

3

F

22

C0

Set the data, and press PAUSE
button.

4

2

0E

02

Set the data.

5

Set to the playback mode.

6

F

62

Change the data and minimize
“t1”. (Coarse adjustment)

7

F

62

Press PAUSE button

8

F

63

Change the data and adjust so
that the switching position (t1)
becomes the specified value.
(Fine adjustment)

9

F

63

Press PAUSE button

10

F

22

80

Set the data, and press PAUSE
button.

11

2

0E

00

Set the data.

12

0

01

00

Set the data.

Fig. 5-3-7.

CH1

CH2

Enlargement

t1=0 

±

 10 

µ

sec

CH1

CH2