DOWNLOAD Sony CDX-GT17 / CDX-GT27 Service Manual ↓ Size: 3.57 MB | Pages: 38 in PDF or view online for FREE

4

SERVO BOARD
CN2

MAIN BOARD
CNP301

J-2502-076-1

When repairing or servicing this set, connect the jig (extension cable)
as shown below.

• Connect the MAIN board (CNP301) and the SERVO board (CN2)

with the extension cable (Part No. J-2502-076-1).

When repairing, the complete SERVO board (A-1201-631-A) should
be replaced since any parts in the SERVO board cannot be repaired.

To replace the AUX jack requires alignment.
1. Insert the AUX jack into the KEY board.
2. Place the KEY board on the front panel.
3. Solder the three terminals of the jack.

KEY board

front panel

AUX jack

5

This section is extracted
from instruction manual.

This section contains instructions on the location 
of controls and basic operations.
For details, see the respective pages.
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

EQ3 (equalizer) button  page 9

To select an equalizer type (XPLOD, 
VOCAL, EDGE, CRUISE, SPACE, 
GRAVITY, CUSTOM or OFF).

C

Volume control dial/select button  
page 9

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

D

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

E

Insert the disc (label side up), playback 
starts.

F

G

AUX input jack  page 10

To connect a portable audio device.

H Z 

To eject the disc.

I

 (front panel release) button  page 5

1

qa qs

q;

9

2

qd

qh

qg

4

5

8

6

7

3

qf

4

wa

qs

1

wd

qj

qk

w;

ql

wf

ws

J

DSPL (display)/SCRL (scroll) button 
(CDX-GT27) page 8

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

  

page 8

To change display items.

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

MODE button  page 8

To select the radio band (FM/MW/SW).

M

BTM button  page 8

To start the BTM function (press and hold).

N

 (located on the 

bottom of the unit)
See “Frequency select switch” in the 
supplied installation/connections manual.

O

CD:
(1)/(2)

: ALBUM –/+ 

(during MP3/WMA 

playback) (CDX-GT27)

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

(3): 

REP  page 8

(4): 

SHUF  page 8

(6): 

To pause playback of a CD on this unit. 
To cancel, press again.

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

P

The following buttons on the card remote 
commander have also different buttons/functions 
from the unit. Remove the insulation film before 
use (page 5). (CDX-GT27 only)

qj <

.

,

>

To control CD/radio, the same as (SEEK) 
–/+ on the unit.
Setup, sound setting, etc., can be operated by 
< ,.

qk

To change display items.

ql

To adjust volume.

w;

To attenuate the sound. To cancel, press 
again.

wa

The same as the select button on the unit.

ws M

m

To control CD, the same as (1)/(2) 
(ALBUM –/+) on the unit.
Setup, sound setting, etc., can be operated by 
M m.

wd

To scroll the display item.

wf

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

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.

*

 AUDIO OUT SUB/REAR

*

 AUDIO OUT SUB/REAR

2

•

Be sure to connect the ground (earth) lead before connecting 
the amplifier.

•

The alarm will only sound if the built-in amplifier is used.

6

2

4

5

1

3

2

*

*

1

  RCA pin cord (not supplied)

*

2

  AUDIO OUT can be switched SUB or 

REAR. For details, see the supplied 
Operating Instructions.

*

1

*

2

1

First connect the black ground (earth) lead, then connect the 
yellow and red power supply leads.

2

Notes
•

  It is not necessary to connect this lead if there is no power 

antenna (aerial) or antenna (aerial) booster, or with a 
manually-operated telescopic antenna (aerial).

•

  When your car has a built-in FM/MW/SW antenna (aerial) 

in the rear/side glass, see “Notes on the control and power 
supply leads.”

3

This connection is only for amplifiers. 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 ground (earth) lead to a 

metal surface of the car first.

•

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

5

Be sure to connect the black ground (earth) lead to a metal 
surface of the car first.

Notes on the control and power supply leads
•

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

•

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

•

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

Memory hold connection
When the yellow power supply 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 ground (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 amplifiers) 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 amplifier are not connected correctly, “FAILURE” 
appears in the display. In this case, make sure the speaker and 
amplifier are connected correctly.

7

 This set can be disassemble according to the following sequence.

3-1.

SUB PANEL ASSY
(Page 8)

3-2.

CD MECHANISM BLOCK
(Page 8)

SET

3-3.

MAIN BOARD
(Page 9)

3-5.

CHASSIS (T) SUB ASSY
(Page 10)

3-6.

ROLLER ARM ASSY
(Page 10)

3-7.

CHASSIS (OP) ASSY
(Page 11)

3-8.

CHUCKING ARM SUB ASSY
(Page 11)

3-9.

SLED MOTOR ASSY
(Page 12)

3-10. OPTICAL PICK-UP SECTION

(Page 13)

3-11. OPTICAL PICK-UP

(Page 13)

3-4.

SERVO BOARD
(Page 9)