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.
5
HCD-EX100
Shipment Mode
• Mode for setting the state of the unit to the state at shipment. When returning the unit to the customer after completing servicing, set to the
shipment mode.
Procedure :
Connect the power plug to the outlet while pressing the  
1/u  button.
Change-over of AM tuner Step between 9kHz and 10kHz.
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press  
1/u  button to turn on the set ON.
2. Select the function “TUNER”, and press the  TUNER/BAND  button to select the BAND “AM”.
3. Press the  
1/u  button to turn on the set OFF.
4. Press  
1/u  button while pressing the  )+/TUNING +  button, and the display of liquid crystal indicator tube changes to “AM 9k
STEP” or “AM 10k STEP”, and thus the channel step is changed over.
Switching the TAPE IN input level attenuate function ON/OFF
• The attenuate function of the line input level (TAPE IN) of this unit can be turned ON/OFF.
Procedure:
1. Press the  
1/u  button to turn ON the power.
2. Press the  FUNCTION  button and set the function to “TAPE”.
3. Press the  
1/u  button to turn OFF the power.
4. While pressing the  
p  button, press the  1/u  button to turn ON the power.
5. After “POWER ON” is displayed, “ATT ON” and “ATT OFF” are displayed, and the attenuate function can be switched ON/OFF.
LCD All Lit and Key Check Mode
Procedure:
1. While pressing the  FUNCTION  button and  
^  button, connect the power plug to the outlet.
2. When the test mode is set, the characters “STEP” are displayed on the LCD.
3. While pressing the  DISPLAY  button (See page 6), press the  
^  button. The whole LCD lights up.
4. Each time the  FUNCTION  button is pressed, the display switches between all lit 
n partial lighting 1 n partial lighting 2 n all lit.
5. When the  
p  button is pressed, “KEY 0” is displayed and the key check mode is set.
6. Each time the button is pressed, the counter counts up. Buttons once pressed will not be counted when pressed again.
When all buttons have been pressed, “KEY OK” is displayed.
7. To end, press the  
1/u  button to turn OFF the power, and disconnect the power plug from the outlet.
Note:
Pressing buttons other than those specified in steps 4 and 5 displays modes not used in servicing. In such cases, press the  
1/u  button to exit
the mode, and repeat from step 3 again.
All lit
Partial lighting 1
Partial lighting 2
6
HCD-EX100
Displaying the CD Text
• This unit is equipped with a simple CD text display function.
The text is displayed only for the first 20 songs. As it will not be displayed from the 21st song, do not suspect a fault.
In some cases, special characters may not be displayed or may be substituted by other characters. This is not a fault.
Aging Mode
• The aging mode automatically repeats the operations of the CD.
When an error occurs:
Aging stops
When no error occurs:
Aging is performed repeatedly.
Procedure:
1. Set any CD. (One with a short playback time of the final track is recommended.)
2. While pressing the  FUNCTION  button and  
^  button, connect the power plug to the outlet.
3. When the test mode is set, the characters “STEP” is displayed on the LCD.
4. When the  
^  button is pressed while pressing the   DISPLAY  button, “AGING” will be displayed, and aging is performed in the
following sequence. While aging is performed, “REP” will be displayed blinking.
5. Pressing the  DISPLAY  button during aging displays the cycle number (@ CY where @ is the number of agings).
6. To end aging, press the  
1/u  button, turn OFF the power, and disconnect the power plug from the outlet.
Sequence during aging
Reads the TOC
Pauses
Accesses first track
Accesses last track
Plays last track
Eject disc (“OPEN” displayed)
Load disc (“CLOSE” displayed)
Displays number of cycles
Power OFF
Power ON
DISPLAY button
DISPLAY button
Note : Press  DISPLAY  button 
           with a thing a fine point 
           from the bottom of front panel.
7
HCD-EX100
SECTION 2
GENERAL
This section is extracted from
instruction manual.
8
HCD-EX100
Remote Control
qg
qh
ql
qk
qj
w;
1 2 3 4
wa
ws
6
7
8
9
5
qf
0
qd
qa
qs
BASS +/– qg (14)
CD N qk (9)
CLOCK/TIMER SELECT 6
(16)
CLOCK/TIMER SET 7 (8, 15)
DISPLAY  5 (8, 12, 14)
DSG qd (14)
ENTER 8 (8, 11, 12, 15)
FM MODE 3 (13)
FUNCTION ws (9, 16)
MEMORY  9 (12)
Number buttons w; (10)
OPEN/CLOSE Z 1 (9)
PC/TAPE  q; (16)
PLAY MODE wa (9, 11)
REPEAT  3 (10)
SLEEP 2 (15)
SURROUND qh (14)
TREBLE +/– qf (14)
TUNER BAND qj (12)
TUNING MODE wa (12)
VOL +/– qs
BUTTON DESCRIPTIONS
@/1 4
+
/ – qa
. qa
> qa
X qk
x qk
m ql
M ql
Setting the time
1
Turn on the system.
2
Press CLOCK/TIMER SET on the
remote.
Proceed to step 4 when you set the clock for
the first time.
3
Press . or >
.
>
.
>
.
>
 repeatedly to select
“CLOCK SET”, then press ENTER on
the remote.
The day indication flashes.
4
Press 
 or 
 repeatedly to set the
day, then press ENTER on the remote.
The hour indication flashes.
5
Press 
 or 
 repeatedly to set the
hour, then press ENTER on the remote.
The minute indication flashes.
6
Press 
 or 
 repeatedly to set the
minute, then press ENTER on the
remote.
The clock starts working.
Tip
If you made a mistake or want to change the time,
start over from step 1.
Turning off the clock display
in standby mode
Press DISPLAY on the remote while the
system is off.
To turn on the clock display, press DISPLAY
on the remote again.
Notes
• When the Daily Timer is set, you cannot turn off the
clock display.
• The clock display will appear when you set the
Daily Timer during turning off the display.
9
HCD-EX100
SECTION 3
DISASSEMBLY
3-1. REAR COVER, BOTTOM PLATE, CASE AND EJECT BOARD
Note: Disassemble the unit in the order as shown below.
1
2
Two claws
Rear cover
9
Case with cover (top) assy
3
Four screws
       (+BVT3X5)
4
Bottom plate
5
Three screws
       (+BVTT3X5)
5
Three screws
       (+BVTT3X5)
8
Connector
      (from CN602
        on Panel board)
6
B
B
A
A
6
7
Screw (2X3)
Washer
qa
qs
0
Eject board
Set
Panel board and Stabilizer
Amp block
CD block
Motor assy, Cam and SW board 
Base unit and Pick up assy
Main board,REG board, Power board
Rear cover, Bottom plate, Case and Eject board
Note: Follow the disassembly procedure in the numerical order given.
10
HCD-EX100
3-3. AMP BLOCK
3-2. PANEL BOARD AND STABILIZER
4
2
3
Remove the Earth clip
Front panel assy
1
Two screws (+BVTT3X5)
5
Two screws
   (+BVTT2.6X8)
5
Three screws
   (+BVTT2.6X8)
7
Panel board
6
Flat type wire
   (CN601)
Claw
Stabilizer
Stabilizer
Stabilizer claw
Turn the stabilizer claw in the direction
of the arrow to remove it from the notch
on the stabiholder.
Connector
AMP board: CN801
AMP block
Two screw (BVTT3x5)
Screw (BVTT3x5)
Connector
AMP board: CN810
Connector
AMP board: CN802
2
3
4
1
1
5

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