Sony HCDEX-5 Service manual
HCD-EX5
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
(λ = 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
SERVICE MANUAL
Ver 1.1 2003. 12
This set is the tuner, CD and amplifier
section in CMT-EX5
CD
SECTION
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM71C-31BD63A
Base Unit Type BU-31BD63A
9-874-036-02
2003L16-1
© 2003.12
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
MICRO Hi-Fi COMPONENT SYSTEM
— Continued on next page —
HCD-EX5
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,
Korean model: 220 V AC, 60 Hz
Chinese model: 220 V AC, 50/60 Hz
Other models: 110 – 240 V AC,
Power consumption
European model: See the nameplate
Other models: See the nameplate
Dimensions (w/h/d) Approx. 186 × 235 ×
Mass Approx. 3.0 kg
Design and specifications are subject to change
without notice.
50/60 Hz
50/60 Hz
0.25 W (at the Power
Saving Mode)
157 mm incl. projecting
parts and controls
SAFETY CHECK-OUT
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 A C leakage. Check leakage as
described below.
LEAKAGE
The A C leakage from any e xposed 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. Follo w 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 A C voltmeter . The “limit” indication
is 0.75 V, so analog meters must have an accurate low-v olta ge
scale. The Simpson 250 and Sanwa SH-63Trd are e xamples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
AC
0.15 µF
Fig. A. Using an A C v oltmeter to check A C leakage.
1.5 kΩ
Earth Ground
Voltmeter
(0.75 V)
2
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 Windo w 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
HCD-EX5
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
5. ELECTRICAL ADJUSTMENTS ······························· 24
8. ELECTRICAL PARTS LIST ······································· 53
3
HCD-EX5
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 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 pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT 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.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
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.
This caution
label is
located inside
the unit.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
4
Main unit
SECTION 2
GENERAL
HCD-EX5
This section is extracted
from instruction manual.
ALPHABETICAL ORDER
A – Q
Disc slot 2 (23)
Display window 4
DISPLAY qa (16, 19, 20)
FUNCTION 0 (9 - 13, 15, 22,
24)
R – Z
Remote sensor qs
TUNER/BAND 9 (13 - 15, 24)
TUNING +/– 6 (13 -15)
VOLUME +/– 5 (18)
BUTTON DESCRIPTIONS
@/1 (power) 1
Z 3
./> 6
m/M 6
x 7
NX 8
To open the front cover, push
down on the knob under the
display window.
5
HCD-EX5
Remote control
ALPHABETICAL ORDER
A – K
BASS +/– qj (17)
CD N ws (9 - 11, 23)
CLEAR 9 (10 - 12, 16)
CLOCK/TIMER SELECT 6
(19)
CLOCK/TIMER SET 7 (8, 18)
CURSOR T/t wd (8, 12)
DIMMER qk (19)
DISPLAY wg (16, 19, 20)
DSG qf (17)
ENTER/YES 8 (8, 10, 12 - 14,
16, 18, 19, 22)
FM MODE qd (15, 24)
FUNCTION ql (9 - 13, 15, 22,
24)
L – Z
Letter/Number buttons wf (10,
12, 15)
MENU/NO q; (12 - 14, 16, 22)
NAME EDIT/SELECT 3 (11,
16)
PLAY MODE w; (9 - 11, 13, 23,
25)
REPEAT qd (10)
SCROLL 5 (12, 20)
SLEEP 2 (17)
SURROUND qg (17)
TIME wh (11, 20)
TREBLE +/– qh (17)
TUNER BAND wa (13 -15)
TUNING MODE w; (13 - 15)
VOL +/– qs (18)
1 234
wh
wg
wf
wd
ws
wa
w;
ql
qk
BUTTON DESCRIPTIONS
Z 1
@/1 (power) 4
./> qa
+/– qa
X ws
x ws
m/M wd
5
6
7
8
9
0
qa
qs
qd
qf
qg
qhqj
6
HCD-EX5
Replacing the battery in
the remote
1
Slide out and remove the battery case.
2
Insert a new lithium battery CR2025
with the + side facing up.
A lithium battery CR2025
3
Slide the battery case back in.
Tip
When the remote no longer operates the system,
replace the battery with a new one.
Note
If you do not use the remote for a long period of time,
remove the battery to avoid possible damage from
battery leakage and corrosion.
Notes on lithium battery
• Keep the lithium battery out of the reach of
children. Should the battery be swallowed,
immediately consult a doctor.
• Wipe the battery with a dry cloth to assure a good
contact.
• Be sure to observe the correct polarity when
installing the battery.
• Do not hold the battery with metallic tweezers,
otherwise a short-circuit may occur.
Setting the clock
1
Turn on the system.
2
Press CLOCK/TIMER SET on the
remote.
The day indication flashes.
3
Press . or > on the remote
repeatedly to set the day, then press
ENTER/YES on the remote.
The hour indication flashes.
4
Press . or > on the remote
repeatedly to set the hour, then press
ENTER/YES on the remote.
The minute indication flashes.
5
Press . or > on the remote
repeatedly to set the minuite, then
press ENTER/YES on the remote.
If you made a mistake
Press TCURSOR or CURSORt on the remote
repeatedly until the indication you want to change
(day, hour, minuite) flashes, and then change the
setting.
To adjust the clock
1
Press CLOCK/TIMER SET on the remote.
2
Press . or > on the remote
repeatedly to select “CLOCK SET?”, then
press ENTER/YES on the remote.
3
Do the same procedures as steps 3 to 5
above.
WARNING
Battery may explode if you mistreated.
Do not recharge, disassemble or dispose of in fire.
7
HCD-EX5
SECTION 3
DISASSEMBLY
• The equipment can be removed using the following procedure.
SET (HCD-EX5) CASE
OC BOARD,OS BOARD
GLASS WINDOW ASSY (U)
POWER BOARD
BD BOARD
MAIN BOARD,TUNNER
CD MECHANISM
(CDM71C-31BD63A)
BASE UNIT (BU-31BD63A)
C MOTOR BOARD,
L.SENSOR BOARD
L.MOTOR BOARD
CASE BUTTON ASSY,LID BOARD
LID(CD)
HOLDER ASSY ,
SLED MOTOR ASSY (M102)
ENCODER BOARD,
D.SENSOR BOARD
(MECHA PANEL)
ORNAMENT
RTR PULLEY ASSY,RTL PULLEY ASSY,
BELT (CDM71), BELT (ROLLER) (L)
SPT PULLEY ASSY,GEAR (RT)ASSY,
GEAR (KT), BELT (CDM71)
8
Note : Follow the disassembly procedure in the numerical order given.
e
3-1. Case
7
HCD-EX5
case
2
six screws (+BVTP 3
3-2. OC Boad,OS Boad
× 8
6
c
onnector
(CN621)
4
four
screws (+BVTP 3
3
cover (bottom)
)
× 8
)
5
1
cover (back)
6
OS board
1
5
two claws
two
screws (+BTP 2.6
× 8
4
guide disc assy
cas
7
two claws
8
OC board
3
bracket
)
2
screw (+BTP 2.6
× 8
)
9
HCD-EX5
)
3-3. Glass Window Assy (U)
4
retainer plate
3
t
hree screws (+BVTP 3
(L)
× 8
)
1
t
hree screws (+BVTP 3
× 8
)
3-4. POWER Board
5
6
four bushings (bracket)
four
step
screws (slider)
qf
shield (lower)
7
glass
window assy (U)
qg
insulator (power 1)
qh
2
retainer plate
POWER board
qd
five
screws (+BVTP 3
6
(R)
c
onnector
7
two
screws (+BVTP 3
× 8
)
qs
shield (upper)
qa
four
(+BVTP 3
× 8
screws
)
× 8
)
10
1
two
screws
(+BVTP 3
× 8
5
(15 core)
)
f
lat type wire
q;
(+BVTP 3
four
screws
× 8
)
8
(+BVTP 3
two
screws
× 8
3
clamp
2
three
screws
screws
)
× 8
× 8
)
(+BVTP 3
9
two
(+BVTP 3
4
three
(+BVTP 3
)
screws
× 8
3-5. BD Board
)
1
f
lat type wire (23 core)
2
(BLK)
(RED)
Remove solder (two portions ).
7
BD board
4
screw (+B 2
HCD-EX5
× 4
)
3-6. MAIN Board, Tunner
1
two
screws
(+BVTP 3
× 8
2
)
5
h
ook
f
ront panel assy
6
flxible
board
6
3
Remove solder (two portions ).
tunner
5
f
lat type wire
(11 core or 15 core)
3
seven
screws (+BVTP 3
× 8
7
connector
(CN601)
9
MAIN board
8
f
lat type wire
(23 core)
4
back panel
11
HCD-EX5
)
3-7. CD Mechanism (CDM71C-31BD63A)
7
CD mechanism (CDM71C-31BD63A)
3
f
lat type wire
(23 core)
4
connector (CN302)
6
four
screws (+BVTP 3
× 8
)
5
connector (CN303)
1
two
screws (+BVTP 3
× 8
)
3-8. Base Unit(BU-31BD63A)
Rotate the SPT pulley assy in the direction of to move the Base unit shaft
forward.
1
1
cam (A)
2
f
ront panel assy
2
screw
(+PTPWH M2.6)
5
base unit
(BU-31BD63A
12
SPT pulley assy
shaft
4
3
shaft
HCD-EX5
3-9. Holder Assy, Sled Motor Assy (M102)
9
two screws
(+PTPWH M2.6)
holder assy
7
coil spring (C) (holder)
5
BD board
q;
qs
screw
(+P 2
h
×
ook
8
screw
(+PTPWH M2.6)
qa
base unit
4
flxible
board
qd
sled motor assy (M102)
3)
6
coil spring (B) (holder)
1
Remove solder
(two portions ).
(RED)
(BLK)
3-10. Case Button Assy, LID Board
7
four
screws (+BVTP 3
qd
two
screws
(+KTP 2.6
× 6
)
8
3
screw
(+BTP 2
6
4
two
(+BVTP 3
× 8
)
× 8
)
frame (L)
screws
8
× 8
2
Remove solder
(two portions ).
)
5
two
hooks
3
frame (R)
2
two
hooks
qf
glass window assy (L)
q;
three
screws (+BTP 2.6
9
case button assy
qa
LID board
× 8
)
qs
two
screws (+KTP 2.6
× 6
1
)
screw (+BVTP 3
× 8
)
13
HCD-EX5
)
)
3-11. LID (CD)
4
three
(+BVTT 2.6
5
screws
× 4
)
retainer plate (L)
6
LID (CD)
2
three
(+BVTT 2.6
screws
×
4
)
3-12. Ornament (Mecha Panel)
2
ornament (mecha panel)
3
retainer plate (R)
1
tension coil spring (CD door
14
1
four
screws
(+BVTP 2.6
×
8
3-13. L.MOTOR Board
)
)
1
Remove solder (two portions ).
4
L.MOTOR board
2
two
screws
(+BVTP 2.6
×
HCD-EX5
8
3
(CN711)
3-14. C MOTOR Board, L.SENSOR Board
3
connector
(CN711)
5
(CN753)
connector
c
onnector
4
c
onnector
(CN754)
1
Remove solder
(two portions ).
6
c
onnector
(CN755)
9
L.SENSOR board (R)
8
screw
(+BTP M 2.6
×
7
6)
2
two screws
(+BTP M 2.6
C MOTOR board
×
6
15
HCD-EX5
Ver 1.1 2003.12
3-15. ENCODER Board, D.SENSOR Board
7
D.SENSOR board
4
6
(+BTP 2.6
screw (+PWH 2
5
ENCODER
screw
×
6)
×
6)
3
cover (encoder)
board
2
screw (+BTP 2.6
1
(+BTP 2.6
screw
× 8
)
×
6)
PRECAUTION DURING ENCODER board INSTALLATION
Rotate the pulley (LDG2) until the mark of the cam (A) becomes visible.
Install the ENCODER board in the way that it is sandwiched by
the cut-outs of the ENCODER board.
pulley (LDG2)
ENCODER board
cam (A)
16
3-16. RTR Pulley Assy, RTL Pulley Assy, Belt (CDM71), Belt (Roller) (L)
6
screw
7
D.SENSOR board
(+BTP 2.6
5
ENCODER
(When installing it, see the ENCODER board item.)
×
6)
3
cover (encoder)
4
screw (+PWH 2
board
2
screw (+BTP 2.6
×
1
screw
(+BTP 2.6
6)
× 8
×
HCD-EX5
)
6)
qf
RTL pulley assy
9
qg
gear (S1)
c
law
qh
belt (CDM71)
q;
8
pulley (RTR) assypulley (RTL) assy
c
law
q;
RTL pulley assy
qd
RTR pulley assy
qs
RTR pulley assy
qj
belt (ROLLER) (L)
qa
17
HCD-EX5
PRECAUTION DURING PULLEY (RTR) ASSY, PULLEY (RTL) ASSY INSTALLATION
pulley (RTR) assy
pulley (RTR) assy
gear (S2)
(9 o'clock position)
pulley (RTL) assy
claw
marks of the gear (S2)
Place the holes of the gear (S2) at the 9 o'clock position and install
the pulley (RTR) assy.
Install it in the way that the gear of the cut-out portion as shown is located in
between the marks of the gear (S2).
pulley (RTR) assy
claw
Then install the pulley (RTL) assy in the way that it can perform
the symmetrical movement with the pulley (RTR) assy.
Then lock both claws.
pulley (RTR) assy
pulley (RTL) assy
Confirm that the pulley (RTR) contacts the claws.
Opposite to it, the pulley (RTL) assy must
have clearance of 1 to 2 mm with the claw.
It should contact with claw.
If clearance is too large or it contacts with claw,
adjustment is necessary.
claw
1 to 2 mm
Method of adjustment is as follows.
Raise the right gear (S1) a little and perform adjustment
by moving the left gear (S1).
gear(S1)
18
3-17. SPT Pulley Assy, Gear (RT) Assy, Gear (KT), Belt (CDM71)
HCD-EX5
3
2
SPT pulley assy
4
gear (KT)
gear (RT) assy
Rotate the SPT pulley assy in the direction of , and remove your hands
at the position where the shaft agrees with the hole shape on the chassis.
SPT pulley assy
5
belt (CDM71 )
When installing, align the protruded portion of the KT gear with groove of the SPT
pulley assy.
1
1
19
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