DOWNLOAD Sony SCD-1 / SCD-777ES (serv.man3) Service Manual ↓ Size: 8.91 MB | Pages: 78 in PDF or view online for FREE

9

7

sled shaft (main)

6

sled shaft (sub)

4

two shaft retainers (main)

3

two shaft retainers (sub)

5

spindle motor block

2

screw
(B3 

×

 5)

2

screw
(B3 

×

 5)

2

two screws
(B3 

×

 5)

1

slide the spindle motor block  
toward the arrow.

sled shaft (main)

sled shaft (sub)

When replacing the motor (spindle) (M7), apply a drop of oil to the
sled shaft (sub) and the sled shaft (main) respectively.

Notes:
•

Do not attach oil to other than specified parts.

•

Do not touch the lens and laser diode during work.

Part Name

Part No

FLOIL (946P)

7-662-001-37

10

Set the CD1/CD2 switch on the remote commander to CD1.

Procedure:
1. Press the 

!

 button while shorting the BP (TEST MODE) on

the DISPLAY board with tweezers, etc. and turn on the power,
so that the following operation will be executed automatically.

(1) All segments from 1G to 19G light up in order, starting from

1G.

(2) Vertical one line (total 7) of all grids from 1G to 15G lights up

in order, starting from the left.

(3) Horizontal one line (total 5) of all grids from 1G to 15G lights

up in order, starting from the top.

(4) Grids from 1G to 15G go off, and all segments from 16G to

19G light up.

2. With the set in the 1-(4) status, pressing any key on the remote

commander changes the display as shown below, and activates
the key check standby mode.

3. When a key on the front panel is pressed, the corresponding

segment and LED light up. (See table below)

key on set

Key Attribute

Lighting segment (in 19 grids)

Lightning LED

A

EJECT

20 bit

–

TIME

TIME

24 bit

–

TEXT

TEXT

__|_____ (DIGITAL FILTER)

–

DIGITAL OUT

DIGITAL OUT

DIGITAL OUTPUT

–

FILTER

FILTER

__|_____ (DIGITAL OUTPUT)

–

SACD/CD

SACD/CD

NORM

–

H

PLAY

WIDE

PLAY LED

X

PAUSE

STD1234

PAUSE LED

x

STOP

DIGITAL FILTER

–

l

AMS-BACK

16 bit

CD LED

L

AMS-FORWARD

OFF

SACD LED

4. If “!%%TEST-END!!%%” is displayed after the keys listed

above were all pressed, the key check terminated successfully.

 As this test does not check the LEDs, check them visually.

5. Press the 

!

 button to turn the power off, and disconnect the

plug from the socket.

1G

2G

3G

4G

5G

6G

7G

8G

9G

10G

11G

12G

13G

14G

15G

18G

17G

16G

19G

20G

CN1002

CN1001

BP (TEST MODE)

11

This mode is a special mode used to perform overall adjustment,
optical pick-up height adjustment, and service check.

1. Wrong setting method can cause a trouble.
2. Never operate the set with the loading panel mounted, which otherwise

causes a trouble.

Setting Method:
1. With the power turned off, press the  

!

  button while pressing

the [DIGITAL OUT] button and 

l

 button.

2. Display of “bbb” implies that the set is now in the Adjust-

ment-1 Mode.

Resetting Method:
Press the  

!

  button to turn the power off, and disconnect the plug

from the socket.

This mode is a special mode used to perform CLV jitter check and
usually movement check.

1. Wrong setting method can cause a trouble.
2. Never operate the set with the loading panel mounted, which otherwise

causes a trouble.

Setting Method:
1. With the power turned off, press the  

!

  button while pressing

the [TIME] button and 

H

 button.

2. Display of “# OPEN #” implies that the set is now in the Ad-

justment-2 Mode.

Resetting Method:
Press the  

!

  button to turn the power off, and disconnect the plug

from the socket.

*1: Disc check list

Display

Result of Disc Check

Discchk DO SL

No disc

Discchk D1 SL

SL

Discchk D2 CD

CD

Discchk D3 CD

Hybrid CD layer

Discchk D3 HD

Hybrid HD layer

Discchk D4 D0

DL L0 layer

Discchk D4 D1

DL L1 layer

Codes

Contents

Remarks

Disc

01

LD ON/OFF

CD, SL, DL

02

Spindle ON/OFF

CD, SL, DL

03

Forcus Search

CD, SL, DL

04

Forcus Servo ON/OFF

CD, SL, DL

05

Track Servo ON/OFF

CD, SL, DL

06

CLV ON

CD, SL, DL

07

Sled Servo ON/OFF

CD, SL, DL

22

Tilt Servo ON/OFF

CD, SL, DL

23

Tilt Bias

Up

CD, SL, DL

24

Tilt Bias

Down

CD, SL, DL

30

Disc Check

CD, SL, DL

5: Thresholds

check              

Go

60

Overall Adjustment

9: No thresholds

CD, SL, DL

check

0: Cancel

61

Result Display

1: Proceed

2: Return

CD, SL, DL

62

Adj. Value Clear

9: Go

0: Cancel

CD, SL, DL

PLAY

PLAY

CD, SL, DL

PAUSE

PAUSE

CD, SL, DL

STOP

STOP

CD, SL, DL

NEXT

NEXT

CD, SL, DL

PREV

PREV

CD, SL, DL

SACD select

FILTER

Focus Search/PLAY

(SACD/CD key)

SL

CD select

(SACD/CD key)

CD

1. Selection of an adjustment item where no disc is present could damage

the optical pick-up.

2. Do not use other than above listed codes.

*1

Set the CD1/CD2 switch on the remote commander to CD1.

Traverse check, S curve check,

Adjustment-1

RF level check, optical pick-up

Mode

height adjustment, and see contents of

Adjustment-1 Mode list.

Adjustment-2

CLV jitter check and usually

Mode

movemant check

12

6. Press the H button.
7. Press the - button and 7 button, and the - button and 5

button on the remote commander successively to turn off the
tracking servo.

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

A

 and B specifications.

9. After checking, press the 

x

 button.

10. Repeat steps 3 through 9 respective discs.
11. Press the 

!

 button to turn the power off.

Disc

A

B

SATD-S2

SATD-S3

1.3 to 2.4 Vp-p

- 0.1 to +0.1 V

TCD-784

bbb

              CD1

             

Discchk

XX

XX

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

Procedure:
1. Connect an oscilloscope to the TP516(TE) 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, SATD-S3, 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.

1. When the following parts were replaced, adjust and check the

items marked with a in the given order.

Optical

IC on RF or

Spindle

Adjustment & check

pick-up

MAIN board

motor (M7)

1. Optical Pick-up

    Height Adjustment

a

×

a

2. Overall Adjustment

a

a

×

3. Traverse Check

a

×

×

4. S Curve Check

a

×

×

5. RF Level Check

a

×

×

6. CLV Jitter Check

×

×

a

2. Adjustment jigs

The following jigs are exclusively used for electrical adjust-
ment and check of this set. Do not use them for other applica-
tions.

(1) Disc

Model

Type

*

1

Category

Applications

SATD-S1

SL

8cm disc

Optical pic-kup H adj.

SATD-S2

SL

Reference disc

Overall adj. and check

SATD-S3

DL

Reference disc

Overall adj. and check

SATD-S4

SL

Reference disc

Audio characteristic check

TCD-784

CD

Reference disc

Overall adj. and check

*1 SL: Single Layer

DL: Dual Layer

(2) Remote commander: Assessory for set or RM-D950 (Part No.

1-473-944-1)

(3) Extension cable (Part No. J-2501-164-A) 2 pcs.

3. In making adjustment and check, set the CD1/CD2 switch on

the remote commander to CD1.

4. The impedance of oscilloscope should be more than 10M .

MAIN board

TP516 (TE)

TP501 (VC)

+
–

oscilloscope

(auto or normal mode)

A

B

VC

Center fo the waveform

Traverse waveform

Parts