CCD-TR913E, CCD-TR950E - Sony Movie Service Manual (repair manual). Page 120

5-40

A 

1.35 

µ

sec

Center of the luminance line width 

Fig. 5-3-14.

Set the recording current levels of the REC Chroma signal. If it is
too low, chroma signal noise in played back picture will increased.
If too high, Y signal noises will increase and white modulation noises
will be produced.

Mode

VTR recording (SP mode)

Signal

No signal

Measurement Point

Pin 0 of CN910 (REC RF)

Measuring Instrument

Oscilloscope

Adjustment Page

F

Adjustment Address

85

Specified Value

A=35.7 ± 1.3mV

Connection:
1)

Remove C085 (0.01 

µ

F, Pin !§ of IC202).

After completing “REC L Level Adjustment” and “REC C
Current Adjustment”, replace C085 with new parts (1-162-970-
11 CERAMIC CHIP 0.01 

µ

F 10% 25V).

2)

Connect Pin $∞ of IC001 and GND with a 0.01F capacitor.
0.01 

µ

F capacitor: 1-101-004-00

Preparations only for the model without REC switch:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: D, address: 14, after memorizing the data, set the
bit value of bit1 to “1”. (Refer to “4-3, 3. Bit value
discrimination” of “5-4. Service Mode”).

3)

Select page: D, address: 15, after memorizing the data, set the
bit value of bit7 to “0”.

4)

Insert a tape, and set to recording mode. (Use the wireless
remote commander of 8mm VCR.)

Adjusting method:
1)

Insert a tape, and set to recording mode.

2)

Select page: 0, address: 01, and set data: 01.

3)

Select page: 2, address: 01, set data: 41, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: 6, address: 61, and set data: 30.

5)

Select page: F, address: DE, after note down the data, set data:
00, and press the PAUSE button of the adjustment remote
commander.

6)

Select page: F, address: 85, change the data and set the REC
chroma signal level (A) to the specified value.

7)

Press the PAUSE button of the adjustment remote commander.

8)

Select page: F, address: DE, set the data noted down at step 5),
and press the PAUSE button of the adjustment remote
commander.

9)

Select page: 6, address: 61, and set data: 10.

10) Select page: 2, address: 01, set data: 00, and press the PAUSE

button of the adjustment remote commander.

11) Select page: 0, address: 01, and set data: 00.

Processing after completed adjustment only for the model
without REC switch:
1)

Select page: 0, address: 01, and set data: 01.

2)

Select page: D, address: 14, and set the data memorized at step
2) of “Preparations only for the model without REC switch”.

3)

Press the PAUSE button of the adjustment remote commander.

4)

Select page: D, address: 15, and set the data memorized at step
3) of “Preparations only for the model without REC switch”.

5)

Press the PAUSE button.

6)

Select page: 0, address: 01, and set data: 00.