CCD-TR913E, CCD-TR950E - Sony Movie Service Manual (repair manual). Page 119

5-39

A

0.67

µ

sec

Center of the luminace line width

Center of the luminace line width

Fig. 5-3-13.

IC202

1

44

132

89

176

133

45

88

IC001

12

1

25 36

13

48

24

37

C085

Set the recording levels of the REC AFM signal and REC ATF signal.
If the level is too low, the audio S/N will deteriorated, tracking will
not be stable, or SP/LP will not be discriminated properly. If too
high, color beets will be produced on the self-recording / playback
image.

Mode

VTR recording (SP mode)

Signal

No signal

Measurement Point

Pin 0 of CN910 (REC RF)

Measuring Instrument

Oscilloscope
(20 MHz BW LIMIT: OFF)

Adjustment Page

F

Adjustment Address

7B to 84

Specified Value

A=11.0 ± 0.7mV

Do not insert any plug into the AUDIO (R) terminal.

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 (1-182-970-
11 CERAMIC CHIP 0.01 

µ

F 10% 25V).

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 Hi8 ME tape, and set to recording mode.

2)

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

3)

Select page: F, address: 7B, set data: 00, and press the PAUSE
button of the adjustment remote commander.

4)

Select page: F, address: 85, set data: 00, and press the PAUSE
button of the adjustment remote commander.

5)

Select page: F, address: 7C, change the data and set the REC
AFM signal level (A) to the specified value.

6)

Press the PAUSE button of the adjustment remote commander.

7)

Select page: F, address: 7C, read the data (D

7C

).

8)

Convert D

7C

 to decimal notation, and obtain D

7C

'. (Refer to Table

5-4-1. “Hexadecimal-decimal conversion table” of “5-4. Service
Mode”.)

9)

Calculate the adjustment data (decimal) from the following
equations (decimal calculation), convert it to a hexadecimal
number, and input each adjustment address.

Address: 7B

D

7B

' = D

7C

'

Address: 7D

D

7D

' = D

7C

'

Address: 7E

D

7E

' = D

7C

'

Address: 7F

D

7F

' = D

7C

' –68

Address: 80

D

80

' = D

7C

' –68

Address: 81

D

81

' = D

7C

' –68

Address: 82

D

82

' = D

7C

' –68

After setting each data, be sure to press the PAUSE button of
the adjustment remote commander.

10) Write the following data (hexadecimal) in page: F, address: 83

to 84.

After setting each data, be sure to press the PAUSE button of
the adjustment remote commander.

11) Select page: 0, address: 01, and set data: 00.
12) Perform “REC C Current Adjustment”.

83

84

96

96

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.