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21

6

claw

1

gear (IDL-F)

5

gear loading lever

2

two claws

4

three hooks

3

gear (IDL-D)

7

gear (IDL-C)

22

•

This mode is used to check operations of Amplifier.

1. Press the ?/1 key to turn the power ON.
2. Press three keys of [DSGX], [FUNCTION] and [TUNER/BAND]

simultaneously.

3. When the CMN (MC) test mode is activated, “s” blinks

on the liquid crystal display.

4. Turn the [BASS]  knob counterclockwise, “TONE MIN” is

displayed on the liquid crystal display. Turn the [BASS] knob
clockwise, “TONE MAX” is displayed on the liquid crystal
display.
Turn the [TREBLE]  knob clockwise or counterclockwise,
“TONEFLAT” is displayed on the liquid crystal display.
Turn the [VOLUME] knob counterclockwise, “VOL MIN” is
displayed on the liquid crystal display. Turn the [VOLUME]
knob clockwise, “VOL MAX” is displayed on the liquid crystal
display.

5. To release this mode, press the ?/1 key.

•

This mode is used to check the liquid crystal display, LED,
model, destination, software version and key.

1. Press the ?/1 key to turn the power ON.
2. Press three keys of [DSGX],  [DISPLAY]  and  [FUNCTION]

simultaneously.

3. Liquid crystal display and LEDs are all turned on.
4. When you want to enter the model, destination and version

display mode, press the [REPEAT]  key.  The model and
destination are displayed alternately on the liquid crystal
display.

5. Each time [REPEAT]  key is pressed, the display changes

starting from MD version, MC version, GC version, CD
version, CDD version, CDMA version, CDMB version, BDA
version, BDB version, ST version, TA version, TM version,
and TC version this order, and returns to the MD version
display on the liquid crystal display.

6. When [FUNCTION] key is pressed while the version numbers

are being displayed except model and destination, year, month
and day of the software creation display. When [FUNCTION]
key is pressed again, the display returns to the software version
display. When [REPEAT]  key is pressed while year, month
and day of the software creation are being displayed, the year,
month and day of creation of the software versions are
displayed on the liquid crystal display in the same order of
version display.

7. Press the [PLAY MODE/DIRECTION] key, the key check mode

is activated.

8. In the key check mode, the liquid crystal display displays “K0”.

Each time a key is pressed, “K” value increases. However,
once a key is pressed, it is no longer taken into account.

9. To release this mode, press three keys in the same manner as

step 2, or disconnect the power cord.

•

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.

1. Press the ?/1 key to turn the power ON.
2. Press three keys of ?/1 , x (CD) and x (TAPE) simulta-

neously.

3. The liquid crystal display becomes blank instantaneously, and

the set is reset.

•

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.

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [DSGX],  

CD

  NX    and  [DISPLAY]

simultaneously.

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

on the liquid crystal display, and the ship mode is set.

•

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.

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [DSGX], x (CD) and [DISPLAY] simulta-

neously.

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

on the liquid crystal display, and the ship mode is set.

•

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

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. While pressing the Z  (CD) key, press the x (CD) key for

5 seconds.

4. The message “LOCKED” is displayed on the liquid crystal

display and the tray is locked. (Even if pressing the Z  (CD)
key, the message “LOCKED” is displayed on the liquid crystal
display and the tray is locked)

5. To release from this mode, pressing the Z  (CD) key, press

the  x  (CD) key for 5 seconds.

6. The message “UNLOCKED” is displayed on the liquid crystal

display and the tray is unlocked.

•

A step of AM channels can be changed over between 9 kHz
and 10 kHz.

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “TUNER”, and press the

[TUNER/BAND] key to select “AM”.

3. Press the ?/1 key to turn the power OFF.
4. Press two keys of ?/1 and M L simultaneously.
5. The message “AM 9K STEP” or “AM 10K STEP” is displayed

on the liquid crystal display, and thus the channel step is
changed over.

•

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

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [PLAY MODE] , [FUNCTION] and

 x  (TAPE) simultaneously.

4. Press the M L key to move the optical pick-up to outside

track, or press the  l m key to inside track.

5. To release this mode, press the ?/1 key.

23

•

This mode can be used for error display of CD section.

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [REPEAT], [FUNCTION] and x (TAPE)

simultaneously.

Error code is not displayed on the liquid crystal display.

•

This mode used to ckeck operation of optical pick-up.

1. Press the ?/1 key to turn the power ON.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [DSGX]  ,  [FUNCTION]  and x (TAPE)

simultaneously.

4. When the CD servo test mode is activated, optical pick-up

moves.

•

Number of repeat for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode is used to enables CD to repeat
playback for limitless times.

1. Press the ?/1 key to turn the power on.
2. Press the [FUNCTION] key to select “CD”.
3. Press three keys of [DSGX]  ,  [FUNCTION]  and Z (CD)

simultaneously.

4. When the 5 repeat off mode is activated, “LIMIT OF” is

displayed on the liquid crystal display.

•

This mode is used to enable function of external input to change
over between MD and VIDEO.

1. Set to standby state.
2. Press two keys of ?/1 and [FUNCTION] simultaneously.
3. The function of external input changes over to MD or VIDEO.

24

DECK SECTION       0 dB = 0.775 V

Confirm each contents of this section first of all. If the results are
not satisfied, do the adjustment.

1. The adjustments should be performed with the rated power

supply voltage unless otherwise noted.

2. The adjustments should be performed in the order given in

this service manual.

3. The adjustments should be performed for both L-CH and R-

CH.

1. Press the [FUNCTION] key to select “MD” or “VIDEO”.
2. Set the tape into the deck.
3. After pressing z 

REC

key,  press X (TAPE) key to start

recording.

4. Mode:  Record

5. Mode:  Playback

6. Confirm the playback signal recorded in step 3 becomes

adjustable level as follows.
If these levels are out of specified values, adjust the RV653
(L-CH) and RV603 (R-CH) on the TC  board to repeat steps 4
and 5.

Specified values: Playback output of 315 Hz to playback

output of 10 kHz: 

±

 2.0 dB

Adjustment Location: TC board

attenuator

set

MAIN board 
MD (VIDEO) IN jack (J101)
L-CH, R-CH

1) 315 Hz
2) 10 kHz

34.6 mV (– 27 dB)







600 

Ω

blank tape
CN-123

AF OSC

+
–

set

recorded
portion

SP board
SPEAKER terminals (J860)
L-CH, R-CH

level meter

(R-CH)

(L-CH)

RV603

RV653











REC Bias
Adjustment