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11

Button

Button Number or Display

DISC1

12

DISC2

11

DISC3

10

DISC4

9

DISC5

8

PLAY MODE

20

PEAK SEARCH

19

FADER

18

REPEAT

17

TIME

16

H (PLAY)

Partial lighting 1

X (PAUSE)

Partial lighting 2

x (STOP)

All lit

EX-CHANGE

35

DISC SKIP

36

m

24

M

25

EDIT

26

CHECK

27

CLEAR

28

AMS (push)

37

AMS (turn)

When rotated clockwise: The music calendar
numerals light up in ascending order.
When rotated counterclockwise: The music
calendar numerals light up in descending
order.

R

Light altemately

r

R

Light altemately

r

12

For the aging mode, three modes of all mode, disc table mode, and loading mode are available.

This set has the Aging mode for operation check of the mechanism deck.
• If a failure occurred

The aging operation stops and a faulty status is displayed on the fluorescent indicator tube.

• If no failure occurs

The aging operation continues repeatedly.

Do not use the test disc when performing aging.
Aging will not be performed properly if discs with tracks shorter than 4 seconds are used.

Procedure:
1. Press the 

[POWER]

 button and turn ON the power.

2. Set discs on all trays.

(More than two discs if five are not available)

3. All mode:

Press the 

[CHECK]

, 

[PLAY MODE]

 and

x

buttons at the same time.

Disc table mode:
Press the 

[CHECK]

, 

[PLAY MODE]

 and 

[SKIP]

 buttons at the same time.

Loading mode:
Press the 

[CHECK]

, 

[PLAY MODE]

 and 

[EX-CHANGE]

 buttons at the same time.

4. Aging starts, and the fluorescent indicator tube will display the following.
5. To exit the mode, press the 

[POWER]

 button to turn OFF the power.

Code No.

Status

All mode

Disc table

Loading

Display in

Display in

mode

mode

Normal operation

case of failure

0

CLOSE (Tray closed)

a

a

A-0

Err 0

1

TOC reading

a

a

a

A-1

Err 1

2

Access to last track

a

A-2

Err 2

3

Play of last track (3 sec)

a

Counter display

Err 3

4

EX OPEN (Tray opened while chucking)

a

a

A-4

Err 4

5

EX SKIP (Disc tray rotated)

a

A-5

Err 5

6

EX CLOSE (Tray closed)

a

a

A-6

Err 6

7

Access to first track

a

A-7

Err 7

8

Play of first track (3 sec)

a

Counter display

Err 8

9

OPEN (tray opened)

a

a

A-9

Err 9

A

DISC SKIP (Disc tray rotated,

a

a

A-A

Err A

and next disc was selected)

The discs are selectie in the order of DISC1 

→

DISC2 

→

 DISC3 

→

 DISC4 

→

 DISC5 

→

 DISC1 

→

 .... Empty trays are skipped.

But the order is random in the disc table mode.

For the mechanism deck check mode, two modes of disc table mode and loading mode are available.
In the mechanism deck check mode, the disc table turning time and the loading time in each section are measured and displayed.

Procedure:
Disc table mode:
Press the 

[POWER]

 switch while pressing

H

, 

[    OPEN/CLOSE]

 and  

[REPEAT]

 buttons simultaneously.

Loading mode:
Press the 

[POWER]

 switch while pressing

H

, 

[    OPEN/CLOSE]

 and  

[TIME]

 buttons simultaneously.

A

A

Display contents

Mode

Check command

Display

Disc table mode

0: Right one turn

r 12.5

Table turning

1: Left one Turn

L 10.2

(

 time measurement 

)

2: Measurement end

r 12.5

3: Undefined

4: Star position

Sta

– –.–

5: Open 

→

 Close

CLo 10.2

6: Close 

→

 BU up

UP

0.7

Table mode

7: BU up 

→

 EX open

EoP

6.2

Loading time

8: EX open 

→

 EX close

ECL 10.3

(

 measurement 

)

9: EX close 

→

 BU down

don

1.2

A: BU down 

→

 Open

oPn

9.3

FF: Measurement end

CLo 10.2

13

1. CD Block is basically designed to operate without adjustment. There-

fore, check each item in order given.

2. Use PATD-012 disc (4-225-203-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M

Ω

 impedance.

4. Clean the object lens by an applicator with neutral detergent when the

signal level is low than specified value with the following checks.

Procedure:
1.

Set the test disc (PATD-012). Disc chucking operation is
complete, then press the 

[POWER]

 button to turn the power

off.

2.

Connect an oscilloscope to test point TP (FE1) and TP (VC)
on the BD board.

3.

Connect between test point TP (ADJ) on the MAIN board and
GND by lead wire.

4.

Press the  

[POWER]

 button to turn the power on and enter the

ADJ mode.
Then playback the number two track automatically, press the

x

button to stop the playback.

5.

Press the  

[CHECK]

 button actuate the focus search. (actuate

the focus search when disc table is moving in and out)

6.

Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 2 ± 1
Vp-p.

S-curve waveform

 • Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the

brightness to obtain best waveform.

Checking Location: BD board

+
–

BD board

TP (FE1)

TP (VC)

oscilloscope

A

B

symmetry

within 2 

±

 1 Vp-p

+
–

BD board

TP (RFDC)

TP (VC)

oscilloscope

VOLT/DIV: 200 mV
TIME/DIV: 500 ns 

level: 1.15 

±

 0.35 Vp-p

VC

Procedure:
1.

Set the test disc (PATD-012). Disc chucking operation is
complete, then press the 

[POWER]

 button to turn the power

off.

2.

Connect an oscilloscope to test point TP (RFDC) and TP (VC)
on the BD board.

3.

Connect between test point TP (ADJ) on the MAIN board and
GND by lead wire.

4.

Press the  

[POWER]

 button to turn the power on and enter the

ADJ mode, then playback the number two track automatically.

5.

Confirm that oscilloscope waveform is clear and check the level
of between RFDC top and VC is correct or not.

A clear RFDC signal waveform means that the shape “

◊

” can be

clearly distinguished at the center of the waveform.

       RFDC signal waveform

Checking Location: BD board

Procedure:
1.

Set the test disc (PATD-012). Disc chucking operation is
complete, then press the 

[POWER]

 button to turn the power

off.

2.

Connect an oscilloscope to test point TP (RFAC) and TP (VC)
on the BD board.

3.

Connect between test point TP (ADJ) on the MAIN board and
GND by lead wire.

4.

Press the  

[POWER]

 button to turn the power on and enter the

ADJ mode, then playback the number two track automatically.

5.

Confirm that oscilloscope waveform is clear and check RFAC
signal level is correct or not.

A clear RFAC signal waveform means that the shape “

◊

” can be

clearly distinguished at the center of the waveform.

       RFAC signal waveform

Checking Location: BD board

+
–

BD board

TP (RFAC)

TP (VC)

oscilloscope

VOLT/DIV: 200 mV
TIME/DIV: 500 ns 

level: 1.35 

±

 0.4 Vp-p

14

Procedure:
1.

Set the test disc (PATD-012). Disc chucking operation is
complete, then press the 

[POWER]

 button to turn the power

off.

2.

Connect an oscilloscpe to test point TP (TE1) and TP (VC) on
the BD board.

3.

Connect between test point TP (ADJ) on the MAIN board and
GND by lead wire.

4.

Press the  

[POWER]

 button to turn the power on and enter the

ADJ mode, then playback the number two track automatically.

5.

Press the 

[TIME]

 button.  (The tracking servo and the sledding

servo are turned OFF)

6.

Check the level B of the oscilliscope waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%

Traverse Waveform

7.

Press the 

[TIME]

 button. (The tracking servo and sledding servo

are turned ON)
Confirm the C (DC voltage) is almost equal to the A (DC
voltage) is step 6.

Traverse Waveform

Checking Location: BD board

+
–

BD board

TP (TE1)

TP (VC)

oscilloscope

0V

B

level: 1.15 

±

 0.5 Vp-p

Center of 
the waveform

A (DC 

voltage)

0V

Tracking servo

Sled servo

ON

C (DC 
voltage)

Tracking servo

Sled servo

OFF

TP 

(RFDC)

TP

 (FE1)

TP

 (VC)

IC131

IC150

IC101

TP

 (TE1)

TP 

(RFAC)