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Ver 1.0 2004. 02
Model Name Using Similar Mechanism
CDX-F5500/F5500X/FW570
CD Drive Mechanism Type
MG-611MA-186//K
Optical Pick-up Name
KSS1000E
SERVICE MANUAL
US Model
Canadian Model
CDX-M9900/M9905X
AEP Model
UK Model
E Model
CDX-M9900
CDX-M9900/M9905X
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.
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
87.5 ­ 107.9 MHz (US, Canadian Model)
87.5 ­ 108.0 MHz (AEP, UK, E Model)
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 (US, Canadian Model)
Tuning range
530 ­ 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
30 µV
SPECIFICATIONS
MW/LW (AEP, UK, E Model)
Tuning range
MW : 531 ­ 1,602 kHz
LW : 153 ­ 279 kHz
Aerial terminal
External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
MW : 30 µV
LW : 40 µV
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 (front/rear)
Subwoofer output (mono)
Power antenna relay control terminal
Power amplifier control terminal
Inputs
Telephone ATT control terminal
Illumination control terminal
Parking brake input terminal
(US, Canadian, AEP, UK Model)
BUS control input terminal
BUS audio input/AUX IN terminal
Antenna input terminal
Video input terminal
· The tuner and CD sections have no adjustments.
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
9-877-633-01
2004B04-1
© 2004. 02
­ Continued on next page ­
FM/AM COMPACT DISC PLAYER
US, Canadian Model
FM/MW/LW COMPACT DISC PLAYER
AEP, UK, E Model
Photo: CDX-M9900


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CDX-M9900/M9905X
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
Tone controls
Bass: ±8 dB at 100 Hz
Treble: ±8 dB at 10 kHz
Loudness
+8 dB at 100 Hz
+2 dB at 10 kHz
Power requirements
12 V DC car battery
(negative ground)
Dimensions
Approx. 178
× 50 × 187 mm
(7 1/8
× 2 × 7 3/8 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
(3 lb. 8 oz.)
Supplied accessories
Card remote commander RM-X145A (1)
(US, Canadian Model)
Card remote commander RM-X144 (1)
(AEP, UK, E Model)
Parts for installation and connections (1 set)
Front panel cover (1)
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.
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, ob-
serve 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 dam-
aged 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)
SERVICE NOTES
· US, Canadian model
· AEP, UK, E model
This label is located on the bottom of the chassis.
optical pick-up
semi-fixed resistor


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CDX-M9900/M9905X
Notes on CD-Rs (recordable CDs)/CD-RWs (rewritable
CDs)
This unit can play the following discs:
Type of discs
Label on the disc
Audio CD
MP3 files
· Some CD-Rs/CD-RWs (depending on the equipment used for
its recording or the condition of the disc) may not play on this
unit.
· You cannot play a CD-R/CD-RW that is not finalized.
· You can play MP3 files recorded on CD-ROMs, CD-Rs, and
CD-RWs.
· A CD-R/CD-RW to which a session can be added can be played.
A process necessary for a recorded CD-R/CD-RW disc to be
played on the audio CD player.
EXTENSION CABLE AND SERVICE POSITION
When repairing or servicing this set, connect the jig (extension cable)
as shown below.
· Connect the MAIN board (CN401) and the SERVO board (CN2)
with the extension cable (Part No. J-2502-062-1).
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.
FORCED FRONT PANEL OPEN/CLOSE
The front panel is forced to OPEN/CLOSE at the timing that the
power (ACC) is turned off.
If the Z button for the front panel is not effective, the following
method is used:
With the front panel open: The front panel is closed when ACC is
switched from ON to OFF edge.
With the front panel closed: The front panel is opened when ACC
is switched from ON to OFF edge.
NOTE FOR REPLACEMENT OF THE DIGITAL BOARD
When repairing, the complete DIGITAL board should be replaced
since any parts in the DIGITAL board cannot be repaired.
SERVO BOARD
CN2
MAIN BOARD
CN401
J-2502-076-1
stand


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CDX-M9900/M9905X
TABLE OF CONTENTS
1. GENERAL
Location of Controls ................................................................ 5
Connections ............................................................................. 6
2. DISASSEMBLY
2-1. Front Panel Assy ................................................................. 8
2-2. Sub Panel Assy .................................................................... 8
2-3. CD Mechanism Block ......................................................... 9
2-4. Driving Section ................................................................... 9
2-5. Driven (F) Assy, Driving (F) Assy .................................... 10
2-6. Digital Board ..................................................................... 10
2-7. Main Board ....................................................................... 11
2-8. Chassis (T) Sub Assy ........................................................ 11
2-9. Roller Arm Assy ................................................................ 12
2-10. Chassis (OP) Assy ............................................................. 12
2-11. Optical Pick-up ................................................................. 13
2-12. SL Motor Assy (M902) ..................................................... 13
2-13. LE Motor Assy (M903) ..................................................... 14
2-14. Servo Board ....................................................................... 14
3. DIAGRAMS
3-1. IC Pin Descriptions ........................................................... 15
3-2. Block Diagram ­CD Section­ ........................................... 20
3-3. Block Diagram ­Main Section­ ........................................ 21
3-4. Block Diagram ­Display Section­ .................................... 22
3-5. Circuit Boards Location .................................................... 23
3-6. Waveforms ......................................................................... 23
3-7. Note for Printed Wiring Boards and
Schematic Diagrams .......................................................... 24
3-8. Printed Wiring Boards ­CD Mechanism Section­ ............ 25
3-9. Schematic Diagram ­CD Mechanism Section (1/2)­ ....... 26
3-10. Schematic Diagram ­CD Mechanism Section (2/2)­ ....... 27
3-11. Printed Wiring Board ­Main Section­ .............................. 28
3-12. Schematic Diagram ­Main Section (1/3)­ ........................ 30
3-13. Schematic Diagram ­Main Section (2/3)­ ........................ 31
3-14. Schematic Diagram ­Main Section (3/3)­ ........................ 32
3-15. Schematic Diagram ­Display Section­ ............................. 33
3-16. Printed Wiring Board ­Display Section­ .......................... 34
3-17. IC Block Diagrams ............................................................ 35
4. EXPLODED VIEWS
4-1. Chassis Section ................................................................. 41
4-2. Main Board Section .......................................................... 42
4-3. Front Panel Section ........................................................... 43
4-4. CD Mechanism Section (1) ............................................... 44
4-5. CD Mechanism Section (2) ............................................... 45
4-6. CD Mechanism Section (3) ............................................... 46
4-7. CD Mechanism Section (4) ............................................... 47
5. ELECTRICAL PARTS LIST ........................................ 48
z
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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CDX-M9900/M9905X
SECTION 1
GENERAL
This section is extracted
from instruction manual.