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13

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.

14

MAIN board

TP702 (MNT4)
TP703 (MNT5)

TP521 (GND)

+

+

–

oscilloscope

(normal mode)

(CH1)

(CH2)

A

CLV jitter waveform

MAIN board

TP515 (PI)

TP511 (FOUT)

TP501 (VC)

+

+

–

storage

oscilloscope

(normal mode)

(CH2)

(CH1)

Procedure:
1. Connect an oscilloscope to the TP515(PI)(CH1),

TP511(FOUT) (CH2) 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-S1).
4. Press the [FILTER] button to set the Focus Search mode.
5. Loosen the OP height adjusting screw 1, and while shifting

the Holder (R2), adjust the height so that the waveform on
oscilloscope satisfies the specified value.

6. Press the [FILTER] button to set the Play mode.
7. Adjust the TAN skew 2 so as to attain most preferable jitter

value on the display.

8. Press the [FILTER] button to set the Focus Search mode.
9. Check that the B value of waveform on oscilloscope satisfies

the specification.

10. Repeat steps 5 through 9.
11. Lock the OP height adjusting screw 1 when adjustment fin-

ished.

12. Press the 

x

 button.

13. Press the 

!

 button to turn the power off.

Specified Value: B is more than 0, and less than A/3

A

B

VC

VC

PI

FOUT

Procedure:
1. Connect an oscilloscope to the TP702(MNT4)(CH1),

TP703(MNT5)(CH2) and TP521(GND) on the MAIN board.

2. Set the Adjustment-2 Mode. (See 5-3. Adjustment-2 Mode in

SECTION 5 (page 11))

3. Set a disc (SATD-S2 or TCD-784).
4. Press the 

H

 button.

5. Move the sled to the middle track.

• Sled middle track

SATD-S2:TN05
TCD-784:TN05

6. Check that the A value of waveform on oscilloscope satisfies

the specification.

7. After checking, press the 

x

 button.

8. Repeat steps 3 through 7 for respective discs.
9. Press the 

!

 button to turn the power off.

Disc

A

SATD-S2

55 µsec or less

TCD-784

*1

*1: Normal-trigger the oscilloscope using FOUT on CH2.

2

TAN skew

1

OP height
adjusting screw

Holder (R2)

15

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

SECTION 5 (page 11))

2. Press the 6 button and 2 button, then the 9 button on the

remote commander (to initialize data).

3. Set a disc (TCD-784).
4. Press the 6 button and - button, then the 5 button on the

remote commander. (Adjustment will take about 2 minutes.)

5. Remove the disc when "CD END" is displayed.
6. Set a disc (SATD-S2).
7. Press the 6 button and - button, then the 5 button on the

remote commander. (Adjustment will take about 1 minute 30
seconds.)

8. Remove the disc when "SL END" is displayed.
9. Set a disc (SATD-S3).
10. Press the 6 button and - button, then the 5 button on the

remote commander. (Adjustment will take about 1 minute.)

11. Remove the disc when "DL END" is displayed.

 If an error is displayed during the adjustment so far, press again the

6 button and - button on the remote commander to execute re-
adjustment.

12. Press the 6 button and 1 button on the remote commander.
13. As the number and adjusted value are displayed, make sure

that it is within the threshold.

14. Press the 1 button on the remote commander to proceed to

the next item. (To return to the previous item, press the 2
button.)

15. Repeat steps 13 and 14.
16. After checking items up to No.43, press the 

!

 button to turn

the power off.

No.

Description

U limit

L limit

00

PI Level SL

0

4

01

PI Level DL

3

7

02

PI Offset CD

15D

2A3

03

PI Offset SL

15D

2A3

04

PI Offset DL

15D

2A3

05

PI Offset Disc Check

100

2FF

06

Traverse Offset CD

07

Traverse Offset SL

08

Traverse Offset DL

09

Traverse Gain CD

10

Traverse Gain SL

11

Traverse Gain DL

12

For PI Level Disc Check

0

2

13

PI Reflectance SL

2D28

7333

14

PI Reflectance DL

936

4083

15

Surface Reflect to CD Layer Distance

82

16

Surface Reflect to DSD Layer Distance

41

82

17

Low Push-pull for Disc Check

4FDF

9999

18

High T Bal for Disc Check

0000

47AE

19

FE Offset CD

20

FE Offset SL

21

FE Offset DL

22

Focus Bias CD

E0

20

23

Focus Bias SL

E0

20

24

Focus Bias DL0

E0

20

25

AGC Focus Gain CD

1500

3000

26

AGC Focus Gain DL

0851

1A00

27

AGC Focus Gain SL

0C28

2500

28

AGC Tracking Gain CD

1A00

3C00

29

AGC Tracking Gain SL

1100

2500

30

AGC Tracking Gain DL

1400

2700

31

RF Loop Filter Offset CD

F6

0A

32

RF Loop Filter Offset DSD

F6

0A

33

Tilt Disordered Point CD +side

34

Tilt Disordered Point CD -side

35

Tilt Disordered Point SL +side

36

Tilt Disordered Point SL -side

37

Tilt Disordered Point DL +side

38

Tilt Disordered Point DL -side/

39

Tilt Offset CD

F0

10

40

Tilt Offset SL

F0

10

41

Tilt Offset DL

F0

10

42

Focus Balance SL

43

Focus Balance DL

1. No threshold specified for      items.
2. All thresholds are displayed in Hex.

16

TP511

(FOUT)

TP515

(PI)

TP524

(FE)

TP501

(VC)

TP516

(TE)

TP521
(GND)

TP503

(RF)

TP703

(MNT5)

TP702

(MNT4)