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CMT-EX5
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
SERVICE MANUAL
MICRO HI-FI COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-874-030-01
2002E1600-1
© 2002.05
· CMT-EX5 is composed of following model.
As for the service manual, it is issued for each component
model, then, please refer to it.
Ver 1.0 2002. 05
COMPONENT MODEL NAME
HCD-EX5
SS-CEX5
·Abbreviation
CND : Canadian model.
HK
: Hong Kong model.
KR
: Korea model.
MX : Mexican model.
SP
: Singapore model.
TW
: Taiwan model.
PARTS LIST
COMPACT DISC DECK
RECEIVER SYSTEM
SPEAKER SYSTEM
Part No.
Description
Remarks
ACCESSORIES
************
1-477-277-11 REMOTE COMMANDER (RM-SCEX5)
1-501-659-41 ANTENNA (FM) (EXCEPT AEP,UK,KR)
0 1-569-008-11 ADAPTOR, CONVERSION 2P (SP,TW)
1-754-149-11 LOOP ANT (AM)
1-754-248-11 ANTENNA (FM) (AEP,UK,KR)
0 1-770-019-51 ADAPTOR, CONVERSION PLUG 3P (UK,HK)
1-816-589-11 PIN, CONNECTOR (FOR CODE RELAY)
1-824-307-11 CODE, CONNECTION (FOR SPEAKER CODE EXTEND)
4-241-375-11 MANUAL, INSTRUCTION (ENGLISH)
(EXCEPT MX,KR)
4-241-375-21 MANUAL, INSTRUCTION (FRENCH) (CND)
4-241-375-31 MANUAL, INSTRUCTION (FRENCH,SPANISH)
(AEP,SP,MX)
4-241-375-41 MANUAL, INSTRUCTION
(GERMAN,DUTCH,SWEDISH,ITALIAN,POLISH) (AEP)
4-241-375-51 MANUAL, INSTRUCTION (CHINESE) (SP,HK,TW)
4-241-375-61 MANUAL, INSTRUCTION (KOREAN) (KR)
4-241-377-11 MANUAL, INSTRUCTION (DANISH,FINNISH) (AEP)
4-241-377-21 MANUAL, INSTRUCTION (PORTUGUESE) (AEP)
4-241-379-11 MANUAL, INSTRUCTION (GREEK) (AEP)
4-241-379-21 MANUAL, INSTRUCTION (HUNGARIAN,CZECH) (AEP)
4-241-379-31 MANUAL, INSTRUCTION (TURKISH) (AEP)
4-241-379-41 MANUAL, INSTRUCTION (SLOVAK) (AEP)
4-236-290-01 COVER,BATTERY (FOR RM-SCEX5)
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.


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CMT-EX5
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver.
Date
Description of Revision
1.0
2002.05
New


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HCD-EX5
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
SERVICE MANUAL
MICRO Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-874-036-02
2003L16-1
© 2003.12
Ver 1.1 2003. 12
SPECIFICATIONS
This set is the tuner, CD and amplifier
section in CMT-EX5
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM71C-31BD63A
Base Unit Type
BU-31BD63A
CD
SECTION
-- Continued on next page --
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 4 ohms loads, both channels driven, from
120 - 10,000 Hz; rated 12 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milli watts
to rated output.
North American model:
Continuous RMS power output (Reference):
15 + 15 W
(4 ohms at 1 kHz, 10%
THD)
European model:
DIN power output (Rated): 12 + 12 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
15 + 15 W
(4 ohms at 1 kHz, 10%
THD)
Music power output (Reference):
15 + 15 W
Other models:
The following measured at 220 V AC, 60 Hz
DIN power output (Rated):
12 + 12 W
(4 ohms at 1 kHz, DIN,
110 V ­ 240 V AC)
Continuous RMS power output (Reference):
15 + 15 W
(4 ohms at 1 kHz, 10%
THD, 110 V ­ 240 V AC)
Inputs
PC/TAPE/MD IN (stereo mini jack):
voltage 450 mV (MD)/
250 mV (PC/TAPE),
impedance 47 kilohms
AM tuner section
Tuning range
Pan-American model:
530 ­ 1,710 kHz
(with the interval set at
10 kHz)
531 ­ 1,710 kHz
(with the interval set at
9kHz)
European model:
531 ­ 1,602 kHz
(with the interval set at
9kHz)
Other models:
530 ­ 1,710 kHz
(with the interval set at
10 kHz)
531 ­ 1,602 kHz
(with the interval set at
9kHz)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz
Outputs
PC/TAPE/MD OUT (stereo mini jack):
voltage 250 mV,
impedance 1 kilohm
PHONES (stereo mini jack):
accepts headphones with
an impedance of 8 ohms
or more
OPTICAL CD DIGITAL OUT (Supported sampling
frequency: 44.1 kHz)
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
= 795 nm)
Emission duration:
continuous
Frequency response
2 Hz ­ 20 kHz
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
87.5 ­ 108.0 MHz
(100-kHz step)
Other models:
87.5 ­ 108.0 MHz
(50-kHz step)
Antenna
FM wire antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz


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2
HCD-EX5
After correcting the original service problem, perform the
following safety checks 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
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 2V AC range are suitable. (See
Fig. A)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µF
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
General
Power requirements
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Mexican model:
120 V AC, 60 Hz
Australian model:
220 ­ 240 V AC,
50/60 Hz
Korean model:
220 V AC, 60 Hz
Chinese model:
220 V AC, 50/60 Hz
Other models:
110 ­ 240 V AC,
50/60 Hz
Power consumption
European model:
See the nameplate
0.25 W (at the Power
Saving Mode)
Other models:
See the nameplate
Dimensions (w/h/d)
Approx. 186
× 235 ×
157 mm incl. projecting
parts and controls
Mass
Approx. 3.0 kg
Design and specifications are subject to change
without notice.


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3
HCD-EX5
TABLE OF CONTENTS
1. SERVICING NOTES ······················································· 4
2. GENERAL ·········································································· 5
3. DISASSEMBLY ································································ 8
3-1. Case ··············································································· 9
3-2. OC Boad,OS Boad ························································ 9
3-3. Glass Window Assy (U) ·············································· 10
3-4. POWER Board ···························································· 10
3-5. BD Board ····································································· 11
3-6. MAIN Board, Tunner ·················································· 11
3-7. CD Mechanism (CDM71C-31BD63A) ······················· 12
3-8. Base Unit(BU-31BD63A) ··········································· 12
3-9. Holder Assy, Sled Motor Assy (M102) ······················· 13
3-10. Case Button Assy, LID Board ····································· 13
3-11. LID (CD) ····································································· 14
3-12. Ornament (Mecha Panel) ············································· 14
3-13. L.MOTOR Board ························································· 15
3-14. C MOTOR Board, L.SENSOR Board ························· 15
3-15. ENCODER Board, D.SENSOR Board ······················· 16
3-16. RTR Pulley Assy, RTL Pulley Assy,
Belt (CDM71), Belt (Roller) (L) ································· 17
3-17. SPT Pulley Assy, Gear (RT) Assy, Gear (KT),
Belt (CDM71) ····························································· 19
4. TEST MODE ···································································· 21
5. ELECTRICAL ADJUSTMENTS ······························· 24
6. DIAGRAMS ······································································ 25
6-1. Block Diagrams ··························································· 25
6-2. Circuit Boards Location ·············································· 28
6-3. Schematic Diagram ­ BD Board ­ ······························ 29
6-4. Printed Wiring Board ­ BD Board (Side A) ­ ············· 30
6-5. Printed Wiring Board ­ BD Board (Side B) ­ ············· 31
6-6. Schematic Diagram ­ MAIN Section (1/2) ­ ·············· 32
6-7. Schematic Diagram ­ MAIN Section (2/2) ­ ·············· 33
6-8. Printed Wiring Board ­ MAIN Board (Side A) ­ ········ 34
6-9. Printed Wiring Board ­ MAIN Board (Side B) ­ ········ 35
6-10. Printed Wiring Board ­ PANEL Section (Side A) ­ ···· 36
6-11. Printed Wiring Board ­ PANEL Section (Side B) ­ ···· 37
6-12. Schematic Diagram ­ MOTOR Section ­ ··················· 38
6-13. Printed Wiring Board ­ MOTOR Section ­ ················ 39
6-14. Printed Wiring Board ­ POWER Board (Side A) ­ ···· 40
6-15. Printed Wiring Board ­ POWER Board (Side B) ­ ···· 41
6-16. Schematic Diagram ­ POWER Section ­ ··················· 42
6-17. IC Pin Function Description ········································ 43
7. EXPLODED VIEWS ······················································ 47
7-1. Case Section ································································ 47
7-2. Chassis Section-1 ························································ 48
7-3. Chassis Section-2 ························································ 49
7-4. Mechanism Section(CDM71C-31BD63A)-1 ·············· 50
7-5. Mechanism Section(CDM71C-31BD63A)-2 ·············· 51
7-6. Base Unit (BU-31BD63A) ·········································· 52
8. ELECTRICAL PARTS LIST ······································· 53