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The 9th and 10 th digit from the left indicates:
(Tray status display)
The 9th and 10th digit from the left indicates which target process-
ing when an error occurred is indicated.

0

1

Open operation

1

2

Close operation

1

8

Ex-open operation

2.  Optical Pick-up Error Code Mode
When this mode is entered, optical pick-up error code is displayed 
with the 8-character format on the fl uorescent indicator tube.

The fi rst digit from the left indicates:
The fi rst digit from the left indicates which mode the error history 
is. In the optical pick-up error code mode, “D” is displayed on the 
fl uorescent indicator tube.

The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error histo-
ry is. “0” indicates the latest error history, and each time the num-
ber increases by one, the error history goes back to one-previous 
error.

The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.

0

1

Not focused (TOC read without a disc)

0

2

GFS NG (TOC read with a disc chucked)

0

3

Start operation time-over

0

4

Defocused continuously (Defocused during TOC 
reading)

0

5

Q code not entered for specifi ed time

0

6

Tracking not turned ON

0

7

Blank disc (Blank disc TOC read)

The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing 
when a trouble occurred

0

1

Power OFF in progress

0

2

Initialize in progress

0

3

Oscillation stopping

0

4

From oscillation stop, oscillation starting

0

5

Stopping

0

6

Stop operation is under way

0

7

Start operation in progress

0

8

TOC read in progress

0

9

Search operation is under way

0

A

Playback operation is under way

0

B

Pause operation is under way

0

C

Playback manual search operation is under way

0

D

Pause manual search operation is under way

0

E

—

The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in 
progress when a trouble occurred. (Step of each processing of the 
5th and 6th digits is indicated)

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.
Procedure:
1.  Press the [

?/1

] button to turn the power on.

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

x

], [CD] and [

u

] simultaneously.

4.  The message “LIMIT OFF” is displayed on the fl uorescent in-

dicator tube momentarily, CD repeat 5 limit is cancelled.

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

?/1

] button to turn the power on.

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

?/1

] button to turn the power off.

4.  Press two buttons of [

x

] and [

?/1

] simultaneously.

5.  The message “CD/USB POWER ON” or “CD/USB POWER 

OFF” is displayed on the fl uorescent indicator tube, and CD 
and USB power on/off changed over in the tuner mode.

This mode is used to changed over MP3 booster on/off.
Procedure:
1.  Press the [

?/1

] button to turn the power on.

2.  Press the [USB] button to select “USB”.
3.  Press three buttons of [

x

], [SURROUND] and [USB] simulta-

neously.

4.  The message “BOOSTER ON” or “BOOSTER OFF” is dis-

played on the fl uorescent indicator tube, and MP3 booster on/
off changed over.

This mode is used to changed over the exciter on/off.
Procedure:
1.  Press the [

?/1

] button to turn the power on.

2.  Press the [CD] button to select “CD”.
3.  Insert a MP3 disc.
4.  Press three buttons of [

x

], [SURROUND] and [AUDIO] si-

multaneously.

5.  The message “EXCITER ON” or “EXCITER OFF” is dis-

played on the fl uorescent indicator tube, and the exciter on/off 
changed over.

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

?/1

] button to turn the power on.

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

x

], [FOLDER 

−] and [SURROUND] simultaneously, the message “SERVICE” is displayed on the fl uorescent 

indicator tube.

4.  Press the [TUNING 

−] button to move the optical pick-up to inside track and the message “SLED IN” is displayed on the fl uorescent 

indicator tude, or press the [TUNING +] button to outside track and the message “SLED OUT” is displayed on the fl uorescent indicator 
tube.

5.  Press the [DISPLAY] button, “LD ON” or “LD OFF” is displayed on the fl uorescent indicator tude. Each time [DISPLAY] button is 

pressed, laser diode on/off is changed over.

6.  To release this mode, press three buttons of [

x

], [FOLDER 

−] and [SURROUND].

This mode is used to check the fl uorescent indicator tube, LEDs, phones jack, keys and control knobs.
Procedure:
1.  Press the [

?/1

] button to turn the power on.

2.  Press three buttons of [

x

], [SURROUND] and [TUNER] simultaneously.

3.  All segments on the fl uorescent indicator tube and all LEDs light up.
4.  Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the key routes check mode.
5.  In this mode, each time any button is pressed, it displays key route and key number of the button. (Refer to following table)

1

DISPLAY

ILLUMINATION

ENTER

DISC 1

+

2

POWER

ERASE

RETURN

DISC 2

ENTER(PEQ)

3

CD

PRESET EQ

FOLDER +

DISC 3

–

4

TUNER/BAND

GROOVE

TUNING +

DISC SKIP/
EX-CHANGE

GUITAR

5

TAPE A/B

SURROUND

PLAY/PAUSE

STOP

FOCUS (GUITAR)

6

AUDIO

EQ BAND 
(GT220/GT440) 
PLAY MODE/
TUNING MODE 
(GT660)

TUNING –

CD-USB SYNC/REC1

FOCUS (VOCAL)

7

USB

FOLDER –

CD-TAPE SYNC

VOCAL

8

SUBWOOFER 
(GT440/GT660)

OPEN/CLOSE

TAPE REC 
PAUSE/START

BASS

9

FOCUS (BASS)

Example: [DISPLAY] button 

: “KEY 10000”

 

[TUNER/BAND] button  : “KEY 40000”

 

[ILLUMINATION] button : “KEY 01000”

 

[CD-TAPE SYNC] button  : “KEY 00070”

6.  Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the key check mode.
7.  In this mode, each time any button is pressed, “KEYCNT” value increases. However, once a button is pressed, it is no longer taken into 

account. (Maximum numbers are GT220: 29, GT440: 30, GT660: 39)

8.  Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the phones jack check mode.
9.  In this mode, “H_P ON” is displayed when phones jack is inserted, and “H_P OFF” is displayed when phones jack is pulled out.
10. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the volume check mode and display “VOLUME 

FLAT”.

11. In this mode, “VOLUME UP” is displayed when [VOLUME] knob is turned clockwise, and “VOLUME DOWN” is displayed when 

[VOLUME] knob is turned counterclockwise.

12. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to enter the jog check mode and display “JOG FLAT”.
13. In this mode, “JOG UP” is displayed when [OPERATION DIAL] knob is turned clockwise, and “JOG DOWN” is displayed when 

[OPERATION DIAL] knob is turned counterclockwise.

14. Press two buttons of [ILLUMINATUION] and [ENTER] simultaneously to release the Panel Test mode.

1.  Clean the following parts with a denatured-alcohol-moistened 

swab :

  record/playback 

head 

pinch 

roller

  erase 

head 

rubber 

belts

  capstan 

idlers

2.  Demagnetize the record/playback head with a head demag-

netizer. (Do not bring the head magnetizer close to the erase 
head.)

3.  Do not use a magnetized screwdriver for the adjustments.
4.  After the adjustments, apply suitable locking compound to the 

parts adjusted.

5.  The adjustments should be performed with the rated power 

supply voltage unless otherwise noted.

FWD

CQ-102C

2.6 – 6.9 mN • m

(30 – 70 g • cm)

(0.41 – 0.97 oz • inch)

FWD 
Back Tension

CQ-102A

0.15 – 0.59 mN • m

(1.5 – 6.0 g • cm)

(0.021 – 0.083 oz • inch)

FF/REW

 CQ-201B

5.4 – 16.7 mN • m

(55 – 170 g • cm)

(0.76 – 2.35 oz • inch)

FWD

CQ-403A

more than 100 g

(more than 3.53 oz)

0 dB = 0.775V

1.  Demagnetize the record/playback head with a head demagne-

tizer.

2.  Do not use a magnetized screwdriver for the adjustments.
3.  After the adjustments, apply suitable locking compound to the 

parts adjust.

P-4-A063

6.3 kHz, –10 dB

Azimuth Adjustment

Note: Perform this adjustment for both decks.

Procedure:
1. Mode: 

Playback

−

2.  Turn the adjustment screw and check output peaks. If the peaks 

do not match for L-CH and R-CH, turn the adjustment screw 
so that outputs match within 1dB of peak.

3. Mode: 

Playback

−

−

4.  After the adjustments, apply suitable locking compound to the 

pats adjusted.

Adjustment Location:  Playback Head (DECK-A)
 Record/Playback/Erase 

Head 

 (DECK-B)