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20

2

Remove four solders.

1

flexible flat cable (16 core)
(CN301)

3

CD board

4

op base assy
(KSM-213D)

21

The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.
Procedure:

1. Press three buttons of

x

/CANCEL

 , [DSGX] and

I/

1 

simultaneously.

2. The system is reset and becomes standby states.

This mode is used to check operations of amplifier.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press three buttons of

x

/CANCEL

 ,

 

[ENTER] and

Z

simultaneously.

3. When the COMMON test mode is activated, “AUDIO IN” is

displayed on the fluorescent indicator tube and “c  PLAY
SLEEP” blink on the fluorescent indicator tube.

4. Each time [EQ] button on the remote commander is pressed,

the display changes starting “TONE MAX”, “TONE MIN”
and “TONE FLAT” this order.

5. Turn the [VOLUME] knob counterclockwise, “VOLUME MIN”

is displayed on the fluorescent indicator tube. Turn the
[VOLUME] knob clockwise, “VOLUME MAX” is displayed
on the fluorescent indicator tube.

6. To release this mode, press the

I/

1

button.

This mode is used to check the fluorescent indicator tube, LED,
model, destination, software version and key.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press three buttons of

x

/CANCEL

 ,

 

[DSGX] and

Z

simultaneously.

3. All segments on the fluorescent indicator tube and [STANDBY]

LED light up.

4. Press the [DSGX]  button, the model and destination are

displayed on the fluorescent indicator tube.

5. Press the [DSGX] button again, MC version is displayed on

the fluorescent indicator tube.

6. Each time [DSGX]  button is pressed, the display changes

starting from MC version, GC version, USBL version, USBM
version, CD version, CDD version, CDMA version, CDMB
version, BDA version, BDB version, ST version, TA version
and TM version this order, and returns to the MC version
display.

7. When [SEARCH] button is pressed while the MC version is

displayed, year, month and day of the software creation is
displayed. When [SEARCH] button is pressed again, the display
returns to the MC version display.

8. Press the [ENTER] button, the key test mode is activated

and  “K 0 V0” is displayed on the fluorescent indicator tube.

9. Each time a button is pressed, “K” value increases. However,

once a button is pressed, it is no longer taken into account.
All keys are pressed, display becomes “K17”.

10. “V” value increases 2, 4, 6 ... if turn the [VOLUME]  knob

clockwise, or it decreases 8, 6, 4 ... if turn the knob
counterclockwise

11. To release this mode, press three buttons in the same manner

as step 2, or disconnect the power cord.

A step of AM tuning interval can be changed over between 9 kHz
or 10 kHz.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [TUNER/BAND] button to select “AM”.
3. Press the

I/

1

button again to turn the power off.

4. Press two buttons of [TUNER/BAND] and

I/

1

simultaneously.

5. The message “AM 9kHz Step” or “AM 10kHz Step” is

displayed on the fluorescent indicator tube and thus the tuning
interval is changed over.

This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press two buttons of [SEARCH] and

I/

1

simultaneously.

4. After the “STANDBY” display blinks, “LOCK” is displayed

on the fluorescent indicator tube, and the ship mode is set.

This mode is used to perform CD ship mode and cold reset
simultaneously.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press three buttons of [SEARCH], [DSGX] and

I/

1

simultaneously.

3. After the “STANDBY” display blinks, “LOCK” is displayed

on the fluorescent indicator tube, the ship mode is set and the
system is reset.

This mode is used to unable to take sample disc out of disc tray in
the shop.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the

Z

button to open the disc tray and set the CD disc.

3. Press the

Z

button to close the disc tray.

4. Press two buttons of

x

/CANCEL

and

Z

for 5 seconds.

5. The message “LOCKED” is displayed on the fluorescent

indicator tube and the disc tray is locked. (Even if pressing
the

Z

button, the message “LOCKED” is displayed on the

fluorescent indicator tube and the disc tray is locked)

6. To release from this mode, press two buttons of

x

/CANCEL

and

Z

for 5 seconds.

7. The message “UNLOCKED” is displayed on the fluorescent

indicator tube and the disc tray is unlocked.

This mode is used to changed over CD power on/off for decreasing
of reception noise in the tuner mode.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press the

I/

1

button again to turn the power off.

4. Press two buttons of

x

/CANCEL

and

I/

1

simultaneously.

5. The message “CD POWER ON” or “CD POWER OFF”is

displayed on the fluorescent indicator tube, and CD power
on/off is changed over in the tuner mode.

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This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the optical pick-up.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.
3. Press three buttons of [SEARCH],

 + and

Z

simultaneously,

the message “SERVICE MODE” is displayed on the
fluorescent indicator tube.

4. Press the

 – button to move the optical pick-up to inside

track and the message “SLED IN” is displayed on the
fluorescent indicator tube, or press the

 + button to outside

track and the message “SLED OUT” is displayed on the
fluorescent indicator tube.

5. Press the [DSGX] button, “LD ON” or “LD OFF” is displayed

on the fluorescent indicator tube. Each time [DSGX] button is
pressed, laser diode on/off is changed over.

6. To release this mode, press the

I/

1

button.

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1.

CD Block is basically constructed to operate without adjustment.

2.

Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3.

Use an oscilloscope with more than 10 M

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.

5.

Check the focus bias check when optical pick-up block is replaced.

1. Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the

CD board.

2. Press the

I/

1

button to turn the power on, and press

the

Z

button to open the disc tray.

3. Set disc (YEDS-18) on the tray and press the

CD

 u

button

to playback.

4. Confirm that oscilloscope waveform is as shown in the figure

below. (eye pattern)

A good eye pattern means that the diamond shape (

◊

) in the

center of the waveform can be clearly distinguished.

±

1. Turn on the set.
2. Input the following signal from signal generator to FM antenna

input directly.

Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz

Deviation

: 75 kHz

Modulation

: 1 kHz

ANT input

: 35 dBu (EMF)

Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.

3. Set to FM tuner function and tune A, B and C signals.
4. Confirm “TUNED” is lit on the display for A, B and C signals.

When the selected station signal is received in good condition,
“TUNED” is displayed.