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9

Procedure:
1. While pressing the both

x

 and 

[CLEAR]

 buttons, turn the

power on.

2. Tray open-close aging is performed.
3. Press the 

[TIME]

 button to display time for open-close on the

fluorescent indicator tube.

4. To release the mode, press the 

[POWER]

 button to turn OFF

the power.

Procedure:
1. Press the 

[POWER]

 button to turn ON the power

2. Press the 

[    OPEN/CLOSE]

 button and insert the disc.

3. Press the 

[POWER]

 button to turn OFF the power.

4. While pressing the both 

[PLAY MODE]

 and 

[     ]

 buttons, turn

the power on .

5. CD starts playing, and every time the 

[TIME]

 button is pressed,

RFDC and OFFSET are changed over.

6. To release the mode, press the 

[POWER]

 button to turn OFF

the power.

Procedure:
1. Press the 

[POWER]

 button to turn ON the power

2. Press the 

[    OPEN/CLOSE]

 button and insert the disc.

3. Press the 

[POWER]

 button to turn OFF the power.

4. Short-circuit the test TP (ADJ) of the DISPLAY board and

ground with a lead wire.

5. Press the 

[POWER]

 button to turn ON the power and CD plays

the second track.

6. To release the mode, press the 

[POWER]

 button to turn OFF

the power.

7. Open-circuit the test TP (ADJ) of the DISPLAY board and

ground with a lead wire.

Procedure:
1. Short-circuit the test TP (AFADJ) of the DISPLAY board and

ground with a lead wire.

2. Press the 

[POWER]

 button to turn ON the power.

The whole fluorescent indicator tube lights up.

3. All buttons have individual button numbers.

When a button is pressed, the button number is counted up
and displayed.

When remote controller signals are received, “RM 

**” will be

displayed.
(

** are the numbers corresponding to the remote controller

buttons.) (CDP-CE370 only)

4. To release the mode, press the 

[POWER]

 button to turn OFF

the power.

5. Open-circuit the test TP (AFADJ) of the DISPLAY board and

ground with a lead wire.

Button

Button Number or Display

H (PLAY)

Partical lighting 1

X (PAUSE)

02

x (STOP)

Partical lighting 2

lAMSL (button)

04

m

05

M

06

TIME

07

PLAY MODE

08

CLEAR

09

REPEAT

10

A OPEN/CLOSE

All lit

lAMSL (knob)

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

1

0

[   ]

A

H

A

10

TP 

(ADJ)

TP 

(AFADJ)

(GND)

11

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.

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

2.

Turn the power on and insert the disc (PATD-012).

3.

Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)

4.

Turn the power on to playback the second track and press the

x

button to stop playing back.

5.

Press the  

[REPEAT]

 button. (The object lens moves up and

down)

6.

Confirm the oscilloscope waveform (S-curve) is symmetrical
between A and B. And check 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 (See page 12)

+
–

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.

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

2.

Turn the power on and insert the disc (PATD-012).

3.

Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)

4.

Turn the power on to playback the second track.

5.

Confirm that oscilloscope waveform is clear and check RFDC
signal level 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 (See page 12)

Procedure:
1.

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

2.

Turn the power on.

3.

Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)

4.

Turn the power on to playback the second track.

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 (See page 12)

+
–

BD board

TP (RFAC)

TP (VC)

oscilloscope

VOLT/DIV: 200 mV
TIME/DIV: 500 ns 

level: 1.35 

±

 0.4 Vp-p

12

Procedure:
1.

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

2.

Turn the power on.

3.

Put the disc (PATD-012) in to playback the number two track.

4.

Press the 

[TIME]

 button.  (The tracking servo and the sledding

servo are turned OFF)

5.

Check the level B of the oscilliscope's 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

6.

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 5.

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)