SCD-1, SCD-777ES (serv.man3) - Sony Audio Service Manual (repair manual). Page 13

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6. Press the H button.
7. Check that the waveform on oscilloscope is clear, and the level

and jitter of waveform satisfy the specifications.

8. After checking, press the 

x

 button.

9. Repeat steps 3 through 8 for respective discs.
10. Press the 

!

 button to turn the power off.

Disc

A

Jitter (displayed value)

SATD-S2

1.25 to 1.65 Vp-p

20 (Hex) or less

TCD-784

1.3 to 1.7 Vp-p

15 (Hex) or less

bbb

              CD1

             

Discchk

XX

XX

Disc type (refer to Disc check list (page 11))

6. Press the - button and 1 button, the - button and 2 but-

ton, and the - button and 3 button on the remote commander
successively to execute the focus search.

7. Check that the waveform on oscilloscope is within the level

A and B specifications.

8. After checking, press the  

x

  button.

9. Repeat steps 3 through 8 for respective discs.
10. Press the ! button to turn the power off.

Disc

A

B

SATD-S2

1.5 to 2.3Vp-p

- 0.1 to +0.1V

TCD-784

MAIN board

TP524 (FE)

TP501 (VC)

+
–

oscilloscope

(normal mode)

Procedure:
1. Connect an oscilloscope to the TP524(FE) and TP501(VC) on

the MAIN board.

2. Set the Adjustment-1 Mode. (See 5-2. Adjustment-1 Mode in

SECTION 5 (page 11))

3. Set a disc (SATD-S2 or TCD-784).
4. Press the 3 button and - button on the remote commander

to make the disc type checked.

If the disc check was made in the Adjustment-1 Mode, pressing
another button immediately after pressing the 3 and - buttons
on the remote commander could cause the microcomputer to run
out of control, thus requiring extreme care.

5. Confirm that the disc was checked.

A

B

S curve waveform

VC

MAIN board

TP503 (RF)

TP501 (VC)

+
–

oscilloscope
(auto mode)

Procedure:
1. Connect an oscilloscope to the TP503(RF) and TP501(VC) on

the MAIN board.

2. Set the Adjustment-1 Mode. (See 5-2. Adjustment-1 Mode in

SECTION 5 (page 11))

3. Set a disc (SATD-S2 or TCD-784).
4. Press the 3 button and - button on the remote commander

to make the disc type checked.

If the disc check was made in the Adjustment-1 Mode, pressing
another button immediately after pressing the 3 and - buttons
on the remote commander could cause the microcomputer to run
out of control, thus requiring extreme care.

5. Confirm that the disc was checked.

VOLT/DIV: 200 mV
TIME/DIV: 500 ns

RF signal waveform

A

bbb

              CD1

+ 00

00

~00

09

Jitter value
(HEX)

not fixed

bbb

              CD1

             

Discchk

XX

XX

Disc type (refer to Disc check list (page 11))

 For easier observation of this waveform, extend the sweep time

and raise the brightness.

Clear RF waveform refers to the waveform where 

◊

 shapes should

be distinctively observed in the center.