CMT-EX100, HCD-EX100 - Sony Audio Service Manual (repair manual)

Model
CMT-EX100 HCD-EX100
Pages
46
Size
3.45 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-ex100-hcd-ex100.pdf
Date

View Sony CMT-EX100 / HCD-EX100 Service Manual online

HCD-EX100
US Model
Canadian Model
AEP Model
UK Model
E Model
Chinese Model
MICRO HI-FI COMPONENT SYSTEM
SERVICE MANUAL
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
Mechanism Type
CDM-60B
Base Unit Type
KSM-770ACA/Z-NP
Optical Pick-up Type
KSS-770A/Z-N1
HCD-EX100 is the amplifier, CD
and tuner section in CMT-EX100.
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.
Canadian model:
Continuous RMS power output (Reference):
15 + 15 watts
(4 ohms at 1 kHz,
10% THD)
European model:
DIN power output (Rated): 12 + 12 watts
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference):
15 + 15 watts
(4 ohms at 1 kHz,
10% THD)
Music power output (Reference):
15 + 15 watts
(4 ohms at 1 kHz,
10% THD)
Other models:
DIN power output (Rated): 12 + 12 watts
(4 ohms at 1 kHz, DIN,
240 V)
12 + 12 watts
(4 ohms at 1 kHz, DIN,
220 V)
Continuous RMS power output (Reference):
15 + 15 watts
(4 ohms at 1 kHz,
10% THD, 240 V)
15 + 15 watts
(4 ohms at 1 kHz,
10% THD, 220 V)
Inputs
PC/TAPE IN:
voltage 250 mV,
impedance 47 kilohms
Outputs
PC/TAPE OUT:
voltage 250 mV,
impedance 1 kilohms
CD DIGITAL OUT:
Optical
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
( =780 nm)
Emission duration:
continuous
Frequency response
20 Hz – 20,000 Hz
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
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
9 kHz)
European model:
531 – 1,602 kHz
(with the interval set at
9 kHz)
Other models:                     531 – 1,602 kHz
(with the interval set at
9 kHz)
530 – 1,710 kHz
(with the interval set at
10 kHz)
Antenna
AM loop antenna
External antenna terminals
Intermediate frequency
450 kHz
λ
General
Power requirements
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Other models:
110 – 240 V AC,
50/60 Hz
Power consumption
40 watts
North American model:
1.8 watts (in standby
mode)
European model:
2.7 watts (in standby
mode)
Dimensions
175 x 222 x 201 mm
(w/h/d, incl. projecting
parts and controls)
Mass
Approx. 3.2 kg
Supplied accessories
Remote commander with
battery  (1)
AM loop antenna (1)
FM wire antenna (1)
Speaker cords (2)
Design and specifications are subject to change
without notice.
9-873-260-01
2001G0200-1
© 2001.7
Sony Corporation
Home Audio Company
Shinagawa Tec Service Manual Production Group
Ver 1.0  2001.07
2
HCD-EX100
SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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 microampers). Leak-
age 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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
0.15
µF
To Exposed Metal
Parts on Set
1.5k
AC
voltmeter
(0.75V)
Earth Ground
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK 
! OR DOTTED LINE
WITH MARK 
! 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
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 PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
ATTENTION AU COMPOSANT AYANT RAPPORT
 À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 
! 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.
3
HCD-EX100
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 pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
TABLE OF CONTENTS
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
.......................................................................... 7
3. DISASSEMBLY
3-1. Rear Cover, Bottom Plate, Case and Eject Board ................. 9
3-2. Panel Board and Stabilizer .................................................. 10
3-3. AMP Block ......................................................................... 10
3-4. CD Block ............................................................................ 11
3-5. Motor Assy, CAM and SW Board ...................................... 11
3-6. Base Unit and Pick Up Assy ............................................... 12
3-7. Main Board, REG Board and Power Board ........................ 12
4. ELECTRICAL ADJUSTMENT 
................................... 13
5. DIAGRAMS
5-1. Circuit Boards Location ...................................................... 14
5-2. Block diagrams – Tuner/CD Section – ............................... 16
Block diagrams – AMP Section – ....................................... 17
5-3. Printed Wiring Board – Main Section – .............................. 18
5-4. Schematic Diagram – Main (1/3) Section – ........................ 19
5-5. Schematic Diagram – Main (2/3) Section – ........................ 20
5-6. Schematic Diagram – Main (3/3) Section – ........................ 21
5-7. Printed Wiring Board – LED/Loading/SW/AMP Section – 22
5-8. Schematic Diagram
– LED/Loading/SW/AMP Section Section – ...................... 23
5-9. Printed Wiring Board – Panel/Eject Section – .................... 24
5-10. Schematic Diagram – Panel/Eject Section – ..................... 25
5-11. Printed Wiring Board – REG Section – ............................ 26
5-12. Schematic Diagram – REG Section – .............................. 27
5-13. Printed Wiring Board – Power Section – ......................... 28
5-14. Printed Wiring Board – Power Section – ......................... 29
5-15. IC Block Diagrams ........................................................... 30
5-16. IC Pin Functions ............................................................... 33
6. EXPLODED VIEWS
6-1. Front and Case Section ....................................................... 36
6-2. Chassis Section ................................................................... 37
6-3. Mechanism Section ............................................................. 38
6-4. Base Unit Section ................................................................ 39
7. ELECTRICAL PARTS LIST
.................................
40
4
HCD-EX100
SECTION 1
SERVICING NOTE
ADJUSTMENT OF CAM PHASE
Absorber
Absorber
SW lever
SW lever
Boss
Cam
Slider (3)
Screw
(BVTP2.6x8)
Screw
(PTTWH2.6x8)
Screw
(BVTP2.6x8)
Groove of slider (3)
Hole of slider (3)
Guide (L)
Boss (Four point)
Guide (R)
Slider (2)
Lever (1)
Lever (1)
Cover, mechanical
Cam
Boss
Boss
Boss
Cam
Boss
Insert the cam so that the boss touches the SW lever 
at the left shown in the figure.
Rotate the cam in the arrow direction, and adjust the
phase until the boss touches the SW lever shown in
the figure.
With the phase adjusted, attach the parts using the following procedure.
STEP1
Insert the boss of the slider (3) in the groove of 
the cam.
STEP2
Set the mecha cover to the groove 
on the slider (3) and attach.
STEP3
Insert the boss of the lever (1) in the hole of the 
slider (3) and attach.
STEP4
While bending the slider (2) slightly in the arrow
direction, insert it in the groove of the guides (L)
and (R) and attach.
Note : Set the slider (1) in this location 
before inserting the cam.

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Here you can view online and download Sony CMT-EX100 / HCD-EX100 Service Manual in PDF. CMT-EX100 / HCD-EX100 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CMT-EX100 / HCD-EX100 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.