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5

This section is extracted
from instruction manual.

Refer to the pages listed for details. The 
corresponding buttons on the card remote 
commander control the same functions as those 
on the unit.

A

To power off; stop the source.

B

Volume control dial/select button  9

To adjust volume (rotate); select setup items 
(press and rotate).

C

EQ3 (equalizer) button  9

To select an equalizer type (XPLOD, 
VOCAL, CLUB, JAZZ, NEW AGE, ROCK, 
CUSTOM or OFF).

D

To insert the disc (label side up), playback 
starts.

E

F Z 

To eject the disc.

G

SCRL (scroll) button  8

To scroll the display item.

H

DSPL (display)/DIM (dimmer) button  
4, 8

To change display items (press); change the 
display brightness (press and hold).

I

*

1

*

2

To skip groups/albums (press); skip groups/
albums continuously (press and hold).

J

 (front panel release) button  4

CDX-GT255

1

8

qs

w;

wa

qf

7

ws
wd

wf

wg

K

CD:
To skip tracks (press); skip tracks 
continuously (press, then press again within 
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find 
a station manually (press and hold).

L

To power on; change the source (Radio/CD/ 
AUX).

M

BTM button  8

To start the BTM function (press and hold).

N

MODE button  8

To select the radio band (FM/MW/SW).

O

(located behind the front 

panel)

  4

P

CD:
(3): 

REP  8

(4): 

SHUF  8

(6): 

To pause playback. To cancel, press 
again.

Radio:
To receive stored stations (press); store 
stations (press and hold).

Q

To improve weak reception: LOCAL/
MONO.

R

S

AUX input jack  10

To connect a portable audio device.

The following buttons on the card remote 
commander have also different buttons/functions 
from the unit.

w; <

.

,

>

To control CD/Radio, the same as (SEEK) 
–/+ on the unit.

wa

To adjust volume.

ws

To attenuate the sound. To cancel, press 
again.

wd

To select items.

wf M

m

To control CD, the same as (GP/ALBM) –/+ 
on the unit.

wg

To receive stored stations (press); store 
sations (press and hold).

*1

When an ATRAC CD is played.

*2

When an MP3/WMA is played.

Note
If the unit is turned off and the display disappears, it 
cannot be operated with the card remote commander 
unless 

(SOURCE)

 on the unit is pressed, or a disc is 

inserted to activate the unit first.

Tip
For details on how to replace the battery, see 
“Replacing the lithium battery of the card remote 
commander” on page 12.

6

1

First connect the black earth lead, then connect the orange/
white stripped, yellow, and red power input leads.

2

Notes
•

It is not necessary to connect this lead if there is no power 
aerial or aerial booster, or with a manually-operated 
telescopic aerial.

•

When your car has a built-in FM/MW/SW aerial in the rear/
side glass, see “Notes on the control and power supply 
leads.”

3

This connection is only for amplifi ers. Connecting any other 
system may damage the unit.

4

Notes
•

If there is no accessory position, connect to the +12 V 
power (battery) terminal which is energized at all times.
Be sure to connect the black earth lead to a metal surface 
of the car fi rst.

•

When your car has a built-in FM/MW/SW aerial in the rear/
side glass, see “Notes on the control and power supply 
leads.”

5

Be sure to connect the black earth lead to a metal surface 
of the car fi rst.

*

1

  RCA pin cord (not supplied)

*

2

  AUDIO OUT can be switched SUB or 

REAR. For details, see the Operating 
Instructions.

Notes on the control and power supply leads
•

The power aerial control lead (blue) supplies +12 V DC when 
you turn on the tuner.

•

When your car has built-in FM/MW/SW aerial in the rear/side 
glass, connect the power aerial control lead (blue) or the 
accessory power input lead (red) to the power terminal of the 
existing aerial booster. For details, consult your dealer.

•

A power aerial without a relay box cannot be used with this 
unit.

Memory hold connection
When the yellow power input lead is connected, power will 
always be supplied to the memory circuit even when the ignition 
switch is turned off.

Notes on speaker connection
•

Before connecting the speakers, turn the unit off.

•

Use speakers with an impedance of 4 to 8 ohms, and with 
adequate power handling capacities to avoid its damage.

•

Do not connect the speaker terminals to the car chassis, or 
connect the terminals of the right speakers with those of the 
left speaker.

•

Do not connect the earth lead of this unit to the negative (–) 
terminal of the speaker.

•

Do not attempt to connect the speakers in parallel.

•

Connect only passive speakers. Connecting active speakers 
(with built-in amplifi ers) to the speaker terminals may damage 
the unit.

•

To avoid a malfunction, do not use the built-in speaker leads 
installed in your car if the unit shares a common negative (–) 
lead for the right and left speakers.

•

Do not connect the unit’s speaker leads to each other.

Note on connection
If speaker and amplifi er are not connected correctly, “FAILURE” 
appears in the display. In this case, make sure the speaker and 
amplifi er are connected correctly.

*

2

7

Note : This set can be disassemble according to the following sequence.

2-1.

SUB PANEL  ASSY
(Page 8)

2-2.

CD MECHANISM BLOCK
(Page 8)

SET

2-3.

MAIN BOARD
(Page 9)

2-4.

CHASSIS (T) SUB ASSY
(Page 9)

2-5.

ROLLER ARM ASSY
(Page 10)

2-6.

CHASSIS (OP) ASSY
(Page 10)

2-8.

SL MOTOR ASSY (M902)
(Page 11)

2-10. SERVO BOARD

(Page 12)

2-7.

OPTICAL PICK-UP
(Page 11)

2-9.

LE MOTOR ASSY (M903)
(Page 12)

8

Note : Follow the disassembly procedure in the numerical order given.

2

 two claws

3

 two claws

4

 sub panel assy 

1

 

two screws

     (+PTT 2.6

 

×

 6)

6

 bracket (CD)

7

 CD mechanism block

4

 CNP301

3

1

 

screw

     (+PTT 2.6

 

×

 6)

2

 

screw

     (+PTT 2.6

 

×

 6)

5

 

two screws

     (+PTT 2.6

 

×

 4)