Be sure to keep your PC used for service and
checking of this unit always updated with the
latest version of your anti-virus software.
In case a virus affected unit was found during
service, contact your Service Headquarters.
Model Name Using Similar MechanismNEW
CD Mechanism TypeCDM90-DVBU202 or CDM90-DVBU204
Optical Pick-up Block NameCMS-S76RFS7G
SPECIFICATIONS
US Model
E Model
AUDIO POWER
SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION: (USA model
only)
Left/Right Channel:
With 5 ohm loads, both channels
driven, from 800 – 20,000 Hz;
rated 150 watts per channel
minimum RMS power, with no
more than 0.7% total harmonic
distortion from 250 milliwatts to
rated output.
A2DP (Advanced Audio
Distribution Prole)
AVRCP 1.3 (Audio Video Remote
Control Prole)
SPP (Serial Port Prole)
Supported codecs:
SBC (Sub Band Codec)
AAC (Advanced Audio Coding)
1)
The actual range will vary depending
on factors such as obstacles between
devices, magnetic elds around a
microwave oven, static electricity,
reception sensitivity, antenna’s
performance, operating system,
software application, etc.
2)
BLUETOOTH standard proles
indicate the purpose of BLUETOOTH
communication between devices.
WALKMAN® and W ALKMAN® logo
are registered trademarks of Sony
Corporation.
MPEG Layer-3 audio c oding
technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is either a
registered trademark or trademark
of Microsoft Corporation in
the United States and/or other
countries.
This product is protected by
certain intellectual property rights
of Microsoft Corporation. Use or
distribution of such technology
outside of this product is prohibited
without a license from Microsoft or
an authorized Microsoft subsidiar y.
The BLUETOOTH® word mark and
logos are registered trademarks
owned by Bluetooth SIG, Inc. and
any use of such marks by Sony
Corporation is under license. Other
trademarks and trade names ar e
those of their respective owners.
The N Mark is a trademark or
registered trademark of NFC Forum,
Inc. in the United States and in other
countries.
Android™ is a trademark of Google
Inc.
Google Play™ is a trademark of
Google Inc.
iPhone and iPod touch ar e
trademarks of Apple Inc., registered
in the U.S. and other countries. App
Store is a service mark of Apple Inc.
“Made f or iPod” and “Made for
iPhone” mean that an electr onic
accessory has been designed
to connect specically to iPod
or iPhone, respectively, and has
been certied by the developer
to meet Apple per formance
standards. Apple is not responsible
for the operation of this device
or its compliance with safety and
regulatory standards. Please note
that the use of this a ccessory with
iPod or iPhone may a ect wireless
performance.
All other trademarks and registered
trademarks are of their respective
holders. In this manual, ™ and ®
marks are not specied.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
AC
1.5 kΩ0.15 μF
voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Except for customers in the
USA
This appliance is classied as a CLASS 1
LASER product. This marking is located
on the rear exterior.
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
2
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.
(CDM90-DVBU202 or CDM90-DVBU204) ................. 84
7. ELECTRICAL PARTS LIST .............................. 85
Accessories are given in the last of the electrical parts list.
3
MHC-V5
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The fl exible 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 refl ective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the leadfree 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 fl ow)
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.
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of sample disc in the
shop is equipped.
Releasing Procedure:
1. Press the [
2. Press the [FUNCTION] button to turn the CD function.
3. Press two buttons of the [x] and [ENTER] simultaneously for
fi ve seconds.
4. The message “UNLOCKED” is displayed on the fl uorescent
indicator tube and the disc tray is unlocked.
Note: When “LOCKED” is displayed, the disc tray lock is not released by
turning power on/off with the [
MODEL IDENTIFICATION
Distinguish by Part No. on the rear side of a main unit.
– Rear View –
– Back Panel –
120V AC Area in E model
US model
Chilean and Peruvian models
] button to turn the power on.
?/1
] button.
?/1
ModelPart No.
PART No.
4-484-682-0[]
4-484-682-2[]
4-484-682-4[]
NOTE OF REPLACING THE MS-476 BOARD
When the MS-476 board is defective, exchange the CDM90 ASSY
(Ref. No. CDM1).
NOTE OF REPLACING THE IC001, IC002, IC105, IC106,
IC302 AND IC306 ON THE ARAGON BOARD
IC001, IC002, IC105, IC106, IC302 and IC306 on the ARAGON
board cannot exchange with single. When these parts are damaged,
exchange the complete mounted board.
NOTE OF PERFORMING THE OPERATION CHECK IN
THE STATE THAT HEAT SINK WAS REMOVED
When performing the operation check in the state that this unit was
disassembled, it is possible to perform the operation check in the
state that heat sink was removed. But don’t perform the operation
check in the long time, and perform the operation check in the
volume state as low as possible.
TEST DISCS
Use following TEST DISC (for CD) when this unit confi rms the
operation and checks it.
Part No.Description
3-702-101-01 DISC (YEDS-18), TEST
4-225-203-01 DISC (PATD-012), TEST
J-2501-307-A DISC (HLX-A1), TEST
4
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, the electrical discharge is necessary for
the electric shock prevention.
Connect the resistor to both ends of respective capacitors.
Note 1: After the side panel and top panel are removed, this work is done.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 8 cm or more).
thin wire (clip etc. )
8 cm or more
hole
hole
– Left view –
2 Draw out the tray.
CD mechanism deck
1 Insert the clip etc. in the hole,
and push the lever in the direction
of the arrow.
tray
– Top view –
6
DISASSEMBLY
• This set can be disassembled in the order shown below.