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SERVICE MANUAL
Sony Corporation
eVehicle Division
Published by Sony Engineering Corporation
US Model
CDX-GT805DX
E Model
Chinese Model
CDX-GT800D
9-879-999-01
2005L04-1
© 2005.12
Ver. 1.0 2005.12
SPECIFICATIONS
CDX-GT800D/GT805DX
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.
FM/AM COMPACT DISC PLAYER
CDX-GT805DX
FM/MW/LW COMPACT DISC PLAYER
CDX-GT800D
­ 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


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2
CDX-GT800D/GT805DX
SAFETY-RELATED COMPONENT WARNING!!
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
SERVICE NOTES
This label is located on the bottom of the chassis.
CAUTION
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.
Design and specifications are subject to change without
notice.
· E model
· Chinese model


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3
CDX-GT800D/GT805DX
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


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4
CDX-GT800D/GT805DX
TABLE OF CONTENTS
1.
GENERAL
Location of Controls ........................................................
5
Connections .....................................................................
6
2.
DISASSEMBLY
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
3.
DIAGNOSIS FUNCTION ........................................ 17
4.
DIAGRAMS
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.
EXPLODED VIEWS
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
6.
ELECTRICAL PARTS LIST .................................. 53
·UNLEADED SOLDER
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.)
: LEAD FREE MARK
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.


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5
CDX-GT800D/GT805DX
SECTION 1
GENERAL
· LOCATION OF CONTROLS
· CDX-GT800D
· CDX-GT805DX
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X154
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 MODE button 8, 17
To select the radio band (FM/MW/LW)/
select the unit*1.
B OFF button
To power off/stop the source.
C VOL (volume) control dial/SOUND
button 16
To adjust volume (rotate); select sound items
(press).
D Display window
E Disc slot 5
To insert the disc.
F SEEK control dial/ENTER button
To select items (rotate); complete a setting
(press).
CD:
To skip tracks or album/groups: press
(ENTER) repeatedly to select ./> or
"ALBM/GROUP," then rotate the SEEK
control dial until the desired track or album/
group appears.
Radio:
To tune in stations: press (ENTER)
repeatedly to select "SEEK," "MANUAL,"
or "PRESET," then rotate the SEEK control
dial until the desired station appears.
G MENU button
To enter menu.
MODE
SEEK
VO
L
+
­
IMAGE
MENU
ANGLE
OFF
REP
SHUF
PAUSE
6
SOURCE
AF/TA
1
25
34
PUSH SOUND
PUSH ENTER
CDX-GT800D
12
3
4
6
57
8
9
qa
q;
qs qd qf
qg
OFF
DSPL/PTY
REP
SHUF
MENU
LIST
SCRL
SOURCE
SOUND
MODE
PAUSE
13
2
46
5
ATT
VOL
+
­
+
­
ENTER
q;
wa
7
1
2
qh
qj
qk
w;
ql
qa
ws
wd
wf
7
H Z (eject)/ANGLE button 5
To eject the disc/slide down the front panel
(press); angle the front panel in 3 positions
(press and hold).
I
(front panel release) button 4
J SOURCE button
To power on/change the source (Radio/CD/
MD*2/AUX).
K Number buttons
Radio:
To receive stored stations (press); store
stations (press and hold).
CD/MD*2:
(1): REP 8, 18
(2): SHUF 8, 18
(6): PAUSE*3
To pause playback. To cancel, press again.
L RESET button 4
M AF (Alternative Frequencies)/TA
(Traffic Announcement) button 10
To set AF and TA/TP in RDS.
N Receptor
To receive signals from the card remote
commander.
O IMAGE button 2
To select the display image.
Movie mode 1-3 t Spectrum analyzer
mode 1-5 t Space Producer mode t Wall
paper mode 1-3 t normal play/reception
mode
The following buttons on the card remote
commander have also different buttons/functions
from the unit.
qh ENTER button
To complete a setting.
qj </, (SEEK ­/+) buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); fast-forward/
reverse a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
qk DSPL (display)/PTY (Programme
Type) button 8, 10
To change display items; to select PTY in
RDS.
ql VOL (volume) +/­ button
To adjust volume.
w; ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
wa SOUND button
To select sound items.
ws LIST button 9, 18
To list up.
wd M/m (+/­) buttons
To select preset stations/skip groups (press);
skip groups continuously (press and hold).
wf SCRL (scroll) button 8
To scroll the display item.
*1 When a CD/MD changer is connected.
*2 When an MD changer is connected.
*3 When playing back on this unit.
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 21.
6
Location of controls and basic operations
Main unit
Card remote commander
RM-X152
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 MODE button 8, 15
To select the radio band (FM/AM)/select the
unit*1.
B OFF button
To power off/stop the source.
C VOL (volume) control dial/SOUND
button 14
To adjust volume (rotate); select sound items
(press).
D Display window
E Disc slot 5
To insert the disc.
F SEEK control dial/ENTER button
To select items (rotate); complete a setting
(press).
CD:
To skip tracks or album/groups: press
(ENTER) repeatedly to select ./> or
"ALBM/GROUP," then rotate the SEEK
control dial until the desired track or album/
group appears.
Radio:
To tune in stations: press (ENTER)
repeatedly to select "SEEK," "MANUAL,"
or "PRESET," then rotate the SEEK control
dial until the desired station appears.
G MENU button
To enter menu.
MODE
SEEK
VO
L
+
­
IMAGE
MENU
ANGLE
OFF
REP
SHUF
PAUSE
6
SOURCE
DSPL
1
25
34
PUSH SOUND
PUSH ENTER
CDX-GT805DX
12
3
4
6
57
8
9
qa
q;
qs qd qf
qg
OFF
DSPL
REP
SHUF
MENU
SCRL
SOURCE
SOUND
MODE
PAUSE
13
2
46
5
ATT
VOL
+
­
+
­
ENTER
LIST/
CAT
q;
wa
7
w;
2
1
qj
qh
qd
ql
qk
qa
ws
wd
7
H Z (eject)/ANGLE button 5
To eject the disc/slide down the front panel
(press); angle the front panel in 3 positions
(press and hold).
I
(front panel release) button 4
J SOURCE button
To power on/change the source (Radio/CD/
MD*2/AUX/SAT*3).
K Number buttons
Radio:
To receive stored stations (press); store
stations (press and hold).
CD/MD*2:
(1): REP 8, 16
(2): SHUF 8, 16
(6): PAUSE*4
To pause playback. To cancel, press again.
L RESET button 4
M DSPL (display) button 8
To change display items.
N Receptor
To receive signals from the card remote
commander.
O IMAGE button 2
To select the display image.
Movie mode 1-3 t Spectrum analyzer
mode 1-5 t Space Producer mode t Wall
paper mode 1-3 t normal play/reception
mode
The following buttons on the card remote
commander have also different buttons/functions
from the unit.
qh ENTER button
To complete a setting.
qj </, (SEEK ­/+) buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); fast-forward/
reverse a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
qk VOL (volume) +/­ button
To adjust volume.
ql ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
w; SOUND button
To select sound items.
wa LIST/CAT*3 button 9, 16
To list up.
ws M/m (+/­) buttons
To select preset stations/skip groups (press);
skip groups continuously (press and hold).
wd SCRL (scroll) button 8
To scroll the display item.
*1 When a CD/MD changer is connected.
*2 When an MD changer is connected.
*3 When the SAT tuner is connected.
*4 When playing back on this unit.
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 19.
This section is extracted
from instruction manual.