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US Model

CDX-GT805DX

E Model

Chinese Model

CDX-GT800D

2005L04-1
© 2005.12

Power amplifier section
Outputs

Speaker outputs (sure seal connectors)

Speaker impedance

4 – 8 ohms

Maximum power output

52 W 

× 4 (at 4 ohms)

General
Outputs

Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna relay control terminal
Power amplifier control terminal

Inputs

Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input/AUX IN terminal
Remote controller input terminal
Antenna input terminal

Loudness

+8 dB at 100 Hz
+0 dB at 10 kHz

• The tuner and CD sections have no adjustments.

CD player section
Signal-to-noise ratio

120 dB

Frequency response

10 – 20,000 Hz

Wow and flutter

Below measurable limit

Tuner section
FM
Tuning range

CDX-GT805DX: 87.5 – 107.9 MHz
CDX-GT800D: 87.5 – 108 MHz

Antenna terminal

External antenna connector

Intermediate frequency

10.7 MHz/450 kHz

Usable sensitivity

9 dBf

Selectivity

75 dB at 400 kHz

Signal-to-noise ratio

67 dB (stereo), 69 dB (mono)

Harmonic distortion at 1 kHz

0.5% (stereo), 0.3% (mono)

Separation

35 dB at 1 kHz

Frequency response

30 – 15,000 Hz

AM (CDX-GT805DX)
Tuning range

530 – 1,710 kHz

Antenna terminal

External antenna connector

Intermediate frequency

10.7 MHz/450 kHz

Sensitivity

30 

µV

MW/LW (CDX-GT800D)
Tuning range

MW: 531 – 1,602 kHz
LW: 153 – 279 kHz

Antenna terminal

External antenna connector

Intermediate frequency

10.7 MHz/450 kHz

Sensitivity

MW: 30 

µV

LW: 40 

µV

AUDIO POWER SPECIFICATIONS (US MODEL)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23.2 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.

– Continued on next page –

Photo: CDX-GT805DX

Model Name Using Similar Mechanism

NEW

CD Drive Mechanism Type

MG-611WD-186//Q

Optical Pick-up Name

KSS1000E

2

COMPONENTS  IDENTIFIED  BY  MARK  0  OR  DOTTED  LINE
WITH  MARK  0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS
WHOSE  PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS
MANUAL  OR  IN  SUPPLEMENTS  PUBLISHED  BY  SONY.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.

NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged

by heat.

TEST DISCS
This set can playback CD-R and CD-ROM discs. The following
test discs should be used to check the capability:

CD-R test disc TCD-R082LMT (Part No. J-2502-063-1)
CD-RW test disc TCD-W082L (Part No. J-2502-063-2)

If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical pick-
up block.

optical pick-up

semi-fixed resistor

This label is located on the bottom of the chassis.

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.

Power requirements

12 V DC car battery
(negative ground)

Dimensions

Approx. 178 

× 50 × 188 mm

(7

 1/8

 

× 2 × 7

 1/2

 in.) (w/h/d)

Mounting dimensions

Approx. 182 

× 53 × 162 mm

(7

 1/4

 

× 2

 1/8

 

× 6

 1/2

 in.) (w/h/d)

Mass

Approx. 1.6 kg
(4 lb.)

Supplied accessories

Parts for installation and connections (1 set)
Card remote commander RM-X152
   (CDX-GT805DX)
Card remote commander RM-X154
   (CDX-GT800D)

US and foreign patents licensed from Dolby Laboratories.

Note
This unit cannot be connected to a digital preamplifier or an equalizer
which is Sony BUS system compatible.

• E model

• Chinese model

3

SERVO BOARD
CN2

MAIN BOARD
CNP301

J-2502-076-1

• CD Playback:

You can play CD-DA (also containing CD TEXT*

1

), CD-R/CD-

RW (MP3/MWA files also containing Multi Session and ATRAC
CD (ATRAC3 and ATRAC3plus format).

Type of discs

Label on the disc

CD-DA

MP3

MWA

ATRAC CD

*1 A CD TEXT disc is a CD-DA that includes information such as

disc, artist and track name.

EXTENSION CABLE AND SERVICE POSITION
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).

NOTE FOR THE OPENING OF THE FRONT PANEL
In this set, the front panel is lowered to below the bottom face when
it is opened.
When servicing the set, place it on a stand having a height of about
2 cm.

stand

4

Location of Controls ........................................................

5

Connections .....................................................................

6

2-1.

Base Panel Assy ............................................................... 10

2-2.

Sub Panel Assy ................................................................ 10

2-3.

CD Mechanism Block ..................................................... 11

2-4.

Driving Section (DB-F05) ............................................... 11

2-5.

Follow Move (F) Assy, Driving (F) Assy ........................ 12

2-6.

Main Board ...................................................................... 12

2-7.

Chassis (T) Sub Assy ....................................................... 13

2-8.

Roller Arm Assy .............................................................. 13

2-9.

Chassis (OP) Assy ........................................................... 14

2-10. Optical Pick-up ................................................................ 14
2-11. SL Motor Assy (M902) ................................................... 15
2-12. LE Motor Assy (M903) ................................................... 15
2-13. Servo Board ..................................................................... 16

........................................ 17

4-1.

Block Diagram –CD Section– ......................................... 19

4-2.

Block Diagram –Main Section– ...................................... 20

4-3.

Block Diagram –Display Section– .................................. 21

4-4.

Circuit Boards Location .................................................. 22

4-5.

Printed Wiring Boards –CD Mechanism Section– .......... 23

4-6.

Schematic Diagram –CD Mechanism Section (1/2)– ..... 24

4-7.

Schematic Diagram –CD Mechanism Section (2/2)– ..... 25

4-8.

Printed Wiring Boards –Main Section– ........................... 26

4-9.

Schematic Diagram –Main Section (1/4)– ...................... 28

4-10. Schematic Diagram –Main Section (2/4)– ...................... 29
4-11. Schematic Diagram –Main Section (3/4)– ...................... 30
4-12. Schematic Diagram –Main Section (4/4)– ...................... 31
4-13. Printed Wiring Boards –Panel Section– .......................... 32
4-14. Printed Wiring Board –Display Section– ........................ 33
4-15. Schematic Diagram –Display Section– ........................... 34

5-1.

Main Section .................................................................... 46

5-2.

Main Board Section ......................................................... 47

5-3.

Front Panel Section ......................................................... 48

5-4.

CD Mechanism Section (1) ............................................. 49

5-5.

CD Mechanism Section (2) ............................................. 50

5-6.

CD Mechanism Section (3) ............................................. 51

5-7.

CD Mechanism Section (4) ............................................. 52

.................................. 53

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size.)

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40

°C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350

°C.

Caution: The printed pattern (copper foil) may peel away if the

heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.