DOWNLOAD Sony CMT-EH10 / HCD-EH10 Service Manual ↓ Size: 3.25 MB | Pages: 46 in PDF or view online for FREE

Model
CMT-EH10 HCD-EH10
Pages
46
Size
3.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-eh10-hcd-eh10.pdf
Date

Sony CMT-EH10 / HCD-EH10 Service Manual ▷ View online

SERVICE MANUAL
COMPACT DISC DECK RECEIVER
HCD-EH10
Ver. 1.5  2006.10
SPECIFICATIONS
9-879-855-06
2006J05-1
© 2006.10
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
HCD-EH10 is the amplifier, CD player, tape deck and
tuner section in CMT-EH10.
Model Name Using Similar Mechanism
NEW
CD Section
Base Unit Name
BU-K8BD83S-WOD
Optical Pick-up Name
KSM-213CDP
TAPE Section
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
H-21SB
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(The United States model only)
With 4 ohm loads, both channels driven, from 100 – 20,000 Hz; rated 4 watts per channel
minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to
rated output.
Amplifier section
North-American model:
Continuous RMS power output (reference): 5 + 5 W (4 ohms at 1 kHz, 10% THD)
European model:
DIN power output (rated): 4 + 4 W (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 5 + 5 W (4 ohms at 1 kHz, 10% THD)
Music power output (reference): 7 + 7 W
The following are measured at AC 240 V, 50/60 Hz (Australian model), AC 220 V, 60 Hz (Korean
model), AC 120 V, 50/60 Hz (Taiwanese model), AC 120 or 240 V, 50/60 Hz (other models)
DIN power output (rated): 4 + 4 W (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 5 + 5 W (4 ohms at 1 kHz, 10% THD)
Inputs
AUDIO IN (stereo mini jack): Sensitivity 800 mV, impedance 47 kilohms
Outputs
PHONES (stereo mini jack): Accepts headphones with an impedance of 8 ohms or more
SPEAKER: Accepts impedance of 4 ohms
CD player section
System: Compact disc and digital audio system
Laser Diode Properties
Emission duration: continuous
Laser Output*: Less than 44.6
µ
W
* This output is the value measurement at a distance of 200mm from the objective lens surface
on the Optical Pick-up Block with 7mm aperture.
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 90 dB
Tape deck section
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
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)
Intermediate frequency: 10.7 MHz
AM tuner section:
Tuning range
North American models: 530 
 1,710 kHz (with 10 kHz tuning interval)
531 
 1,710 kHz (with 9 kHz tuning interval)
European model: 531 
 1,602 kHz (with 9 kHz tuning interval)
Other models: 530 
 1,710 kHz (with 10 kHz tuning interval)
531 
 1,602 kHz (with 9 kHz tuning interval)
Intermediate frequency: 450 kHz
General
Power requirements
North American model: AC 120 V, 60 Hz
European model: AC 230 V, 50/60 Hz
Australian model: AC 230 
 240 V, 50/60 Hz
Korean model: AC 220 V, 60 Hz
Argentine model: AC 220 V, 50/60 Hz
Taiwanese model: AC 120 V, 50/60 Hz
Other models: AC 110 
 120 or 220 
 240 V, 50/60 Hz
Adjustable with voltage selector
Power consumption:
North American model: 23 W
European model: 22 W
1.0 W (in Power off)
Other models: 22 W
Dimensions (w/h/d) (excl. speakers): Approx. 158 
×
 241.5 
×
 233 mm
Mass (excl. speakers):
Approx. 2.1 kg
Design and specifications are subject to change without notice.
2
HCD-EH10
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 the 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.
1.
SERVICING  NOTES
...............................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
6
3-2.
Rear Cabinet Section .......................................................
6
3-3.
Front Cabinet Section, Top Cabinet Section and
MAIN Board ....................................................................
7
3-4.
Mechanical Deck (H-21SB) ............................................
7
3-5.
Base Unit Section (BU-K8BD83S-WOD) ......................
8
3-6.
Optical Pick-up Block (KSM-213CDP) ..........................
8
4.
TEST  MODE
..............................................................
9
5.
MECHANICAL  ADJUSTMENTS
....................... 10
6.
ELECTRICAL  ADJUSTMENTS
......................... 10
7.
DIAGRAMS
7-1.
Block Diagram – CD SERVO Section – ......................... 14
7-2.
Block Diagram – TUNER Section – ............................... 15
7-3.
Block Diagram – MAIN Section – .................................. 16
7-4.
Printed Wiring Board – CD Board – ............................... 18
7-5.
Schematic Diagram – CD Board – .................................. 19
7-6.
Printed Wiring Boards – MAIN Section – ...................... 20
7-7.
Schematic Diagram – MAIN Section (1/3) ..................... 21
7-8.
Schematic Diagram – MAIN Section (2/3) ..................... 22
7-9.
Schematic Diagram – MAIN Section (3/3) ..................... 23
7-10. Printed Wiring Board – PANEL Board – ........................ 24
7-11. Schematic Diagram – PANEL Board – ........................... 25
8.
EXPLODED  VIEWS
8-1.
Overall Section ................................................................ 34
8-2.
Front Cabinet Section ...................................................... 35
8-3.
Top Cabinet Section ........................................................ 36
8-4.
Base Unit Section (BU-K8BD83S-WOD) ...................... 37
9.
ELECTRICAL  PARTS  LIST
................................ 38
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.
The following caution label is located inside the unit.
CLASS 1 LASER PRODUCT
LUOKAN 1 LASER LAITE
KLASS 1 LASER APPARA
T
This appliance is classified
as a CLASS 1 LASER
product.
This label is located on the
rear exterior.
TABLE  OF  CONTENTS
Ver. 1.5
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)
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  COM-  POSANTS
QUE  PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT
DONNÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS
PUBLIÉS  PAR  SONY.
Refer to SUPPLEMENT-1 for the MAIN section of printed
wiring boards and schematic diagrams of US, Canadian,
Australian, Singapore, Taiwan, Argentina and Korean models.
When repairing the set of AEP, East European, Russian and UK,
refer to either of original service manual/SUPPLEMENT-1
according to the set.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
3
HCD-EH10
SECTION  1
SERVICING  NOTES
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 viscou-s (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.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
Fig.1 Method to push the SW750
SW750
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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER  DIODE  AND  FOCUS  SEARCH  OPERATION
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the SW750. (push switch type)
The following checking method for the laser diode is operable.
Method
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the SW750 as shown in Fig.1.
Note:
Do not push the detection lever strongly, or it may be bent or damaged.
3. Press the
CD 
u
button.
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
In this operation, the object lens will move up and down 2
times along with inward motion for the focus search.
Ver. 1.5
MODEL  IDENTIFICATION
Power Voltage
Indication
– Rear Cabinet –
MODEL
POWER VOLTAGE INDICATION
US, Canadian models
AC 120 V, 60 Hz
AEP, East European,
AC 230 V, 50/60 Hz
Russian, UK models
Australian model
AC 230 
 240 V, 50/60 Hz
Singapore model
AC 110 
 120 or 220 – 240 V,
50/60 Hz
Taiwan model
AC 120 V, 50/60 Hz
Argentina model
AC 220 V, 50/60 Hz
Korean model
AC 220 V, 60 Hz
4
HCD-EH10
SECTION  2
GENERAL
This section is extracted from
instruction manual.
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Page of 46
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  • Here you can View online or download the Service Manual for the Sony CMT-EH10 / HCD-EH10 in PDF for free, which will help you to disassemble, recover, fix and repair Sony CMT-EH10 / HCD-EH10 Audio. Information contained in Sony CMT-EH10 / HCD-EH10 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.