DCR-TRV25, DCR-TRV27 (serv.man2) - Sony Movie Service Manual (repair manual). Page 123

5-50

Before perform the video system adjustments, check that the
specified value of “66 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.

Set the center frequency of IC4101 chroma band-pass filter.

Mode

Camera

Subject

Arbitrary

Measurement Point

CH1: Chroma signal terminal of S
VIDEO jack (75

Ω

 terminated)

CH2: Y signal terminal of S VIDEO jack
(75

Ω

 terminated)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

28

Specified Value

A = 100mVp-p or less
B = 200mVp-p or more

The data of page: 0, address: 10 must be “00”.

1

0

01

01

Set the data.

2

Check that the burst signal (B) is
output to the chroma signal
terminal of S VIDEO jack.

3

3

0C

04

Set the data, and press PAUSE
button.

4

C

28

Change the data for minimum
amplitude of the burst signal
level (A).
(The data should be “00” to “0F”.)

5

C

28

Press PAUSE button.

6

3

0C

00

Set the data, and press PAUSE
button.

7

Check that the burst signal level
(B) satisfies the specified value.

8

0

01

00

Set the data.

 Mode

Camera

Subject

Arbitrary

Measurement Point

Y signal terminal of S VIDEO jack
(75

Ω

 terminated)

Measuring Instrument

Oscilloscope

Adjustment Page

C

Adjustment Address

25

Specified Value

A = 1000 ± 14mV

The data of page: 0, address: 10 must be “00”.

Switch setting:
DEMO MODE (Menu setting) ................................................ OFF

1

0

01

01

Set the data.

2

3

0C

02

Set the data, and press PAUSE
button.

3

C

25

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

4

C

25

Press PAUSE button.

5

3

0C

00

Set the data, and press PAUSE
button.

6

0

01

00

Set the data.

Fig. 5-3-5.

Fig. 5-3-6.