Sony SS-CEX100 User manual

CMT-EX100
US Model
Canadian Model
AEP Model
UK Model
E Model
Chinese Model
SERVICE MANUAL
MICRO Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Sinagawa Tec Service Manual Production Group
Ver 1.0 2001. 07
9-873-241-01
2001G0200-1
© 2001.7
COMPONENT MODEL NAME
• CMT-EX100 is composed of following models.
As for the service manual, it is issued for each component model,
then, please refer to them.
COMPACT DISC DECK
RECEIVER SYSTEM
PARTS LIST
Part No. Description Remark
ACCESSORIES & PACKING MATERIALS
****************************
1-476-787-11 COMMANDER, CARD (RM-SCEX100)
1-754-121-11 ANTENNA, LOOP (AM)
1-754-208-11 FM ANTENNA (US,CND)
1-754-209-11 FM ANTENNA (EXCEPT US,CND)
1-790-271-11 CABLE, SPEAKER (1m)
4-225-559-01 ADAPTOR, 8cm CD (HK,SP)
4-236-291-11 MANUAL, INSTRUCTION (ENGLISH)
(US,CND,AEP,UK,HK,SP)
4-236-291-21 MANUAL, INSTRUCTION (FRENCH) (US,CND)
4-236-291-31 MANUAL, INSTRUCTION (FRENCH,SPANISH) (AEP,SP)
4-236-291-41 MANUAL,INSTRUCTION
(GERMAN,DUTCH,SWEDISH,ITALIAN,POLISH) (AEP)
4-236-291-51 MANUAL, INSTRUCTION
(TRADITIONAL CHINESE)(HK,SP)
4-236-291-61 MANUAL, INSTRUCTION (KOREAN)(KR)
4-236-439-11 MANUAL, INSTRUCTION (ENGLISH)(CH)
4-236-439-21 MANUAL, INSTRUCTION (SIMPLIFIED CHINESE)(CH)
4-236-290-01 COVER, BATTERY (FOR RM-SCEX100)
HCD-EX100
SS-CEX100
SPECIFICATIONS
General
SPEAKER SYSTEM
• Abbreviation
CND: Canadian model
HK : Hong kong model
SP : Singapore model
KR : Korea model
CH : Chinese model
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 x222 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.

CMT-EX100
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 2001.07 New

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.
0.15µF
To Exposed Metal
Parts on Set
1.5kΩ
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/ubutton.
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/ubutton 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/ubutton to turn on the set OFF.
4. Press 1/ubutton 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/ubutton to turn ON the power.
2. Press the FUNCTION button and set the function to “TAPE”.
3. Press the 1/ubutton to turn OFF the power.
4. While pressing the pbutton, press the 1/ubutton 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 npartial lighting 1 npartial lighting 2 nall lit.
5. When the pbutton 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/ubutton 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/ubutton 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/ubutton, 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;
1234
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 Z1(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
Xqk
xqk
mql
Mql
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 cove
r
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

11
HCD-EX100
3-4. CD BLOCK
3-5. MOTOR ASSY (LOADING BOARD), CAM AND SW BOARD
Note: The phase adjustment is required in assembly.
Refer to"Section 1. Servicing Note" for details.
Connector
MAIN board: CN351
Flat type wire (CN301)
Connector
MAIN board: CN302
1
2
4
5
6
7
8
Screw (BVTT3x5)
3 Two screws (BVTT3x5
)
Screw (BVTT3x5)
Two screws (BVTT3x5)
CD block
12
3
4
5
6
7
8
9
0
!¡
!™
!£
!¢
!∞
!§
Slider (3)
Slider (2)
Disc holder
Lever (1)
Mecha cover
Motor assy
Loading board
SW board
Two screws (BVTP2.6x8) Two screws (BVTP2.6x8)
Two screws (BVTP2.6x8)
Two screws (BVTP2.6x8)
Screws (BTP2.6x8)
Screws (PTPWH2.6
)
Two screws (M2.6)
Two screws (M2.6)
Cam

12
HCD-EX100
3-6. BASE UNIT AND PICK UP ASSY
1
2
3
4
5
6
7
8
9
0
!™
!£
!¢
!∞
!¡
Two screws (BVTP2.6x8)
Two screws
(BVTP2.6x8)
Guide (L)
Guide (R)
Slider (4)
Slider (4)
Slider (1)
Two screws (PTPWH2.6)
Screws (PTPWH2.6)
Two screws (PTPWH2.6)
Two screws
(PTPWH2.6)
Coil spring
Coil spring
BU holder
Pick up assy
3-7. MAIN BOARD (LED BOARD), REG BOARD AND POWER BOARD
Two screws
(BVTT3x5) Two screws
(BVTP3x8)
Two screws (BVTP3x8
)
Three screws
(BVTT3x5)
Two screws
(BVTT3x5)
Screw (PTPWH2.6)
Screw (BVTT3x5)
Screw (BVTT3x5)
Screw (BVTT3x5)
Main board
Power board
Power cord
REG board
Connector
POWER board: CN903
Back panel
LED board
1
2
3
4
Two screws
(BVTT3x5)
Screw (BVTT3x5)
Shield case
Flat type wire
(CN702)
Flat type wire (CN701)
5
6
7
8
9
0
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
Warning
After repairs are completed and it has been assembled, be sure to carry out the following checks.
1. Make sure the disc opens and closes smoothly.
2. Make sure the disc does not rub on anything when it is played.

13
HCD-EX100
Note:
1. CD Block is basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lens by an applicator with neutral detergent when
the signal level is low than specified value with the following
checks.
S Curve Check
Procedure :
1. Connect the oscilloscope to test points TP (FE) and TP (VC).
2. Connect TP (FEI) and TP (VC) of the MAIN board with lead
wires.
3. Press the 1/ubutton to turn the set ON.
4. Press the ^button, load and eject the disc (YEDS-18) to
perform focus search.
5. Check the symmetry and peak to peak level of the oscilloscope
waveform (S curve) at this time.
S-curve waveform
6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure than the ratio of
A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the bright-
ness to obtain best waveform.
Checking Location : MAIN board
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) and TP (VC) on MAIN
board.
2. Press the 1/ubutton to turn the set ON.
3. Put disc (YEDS-18) in and playback No.5track.
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
oscilloscope
MAIN board
TP (FE)
TP (VC)
+
–
symmetry
A
B
Within 3.8 ±1 Vp-p
oscilloscope
MAIN board
TP (RF)
TP (VC)
+
–
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.2 ±0.2 Vp-p
0V
Center of the waveform
B
Symmetry
A (DC voitage)
level : 1.3 ±Vp-p
+0.6
–0.7
oscilloscope
MAIN board
TP (TE)
TP (VC)
+
–
Note: Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
RF signal waveform
Checking Location : MAIN board
E-F Balance (1 Track Jump) check
Procedure:
1. Connect oscilloscope to test point TP (TE) and TP (VC) on MAIN
board.
2. Press the 1/ubutton to turn the unit ON.
3. Put disc (YEDS-18) in and playback No.5track.
4. Press the ^button, to pause.
5. Check the level (B) of the oscilloscope's waveform and the DC
voltage (A) of the center of the Traverse waveform.
Confirm the following:
• A/B x 100 = less then ±22 (%)
• B = 1.3 ±Vp-p
1 track jump waveform
SECTION 4
ELECTRICAL ADJUSTMENT
+0.6
–0.7
Checking Location : MAIN board
[ MAIN BOARD ] — SIDE A —
TP
(VC)
TP
(FEI)
TP
(RF)
TP
(FE)
TP
(TE)
IC303
IC301

14
HCD-EX100
SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
MAIN BOARD
AMP BOARD
REG BOAR
D
SW BOARD
POWER BOARD
PANEL BOARD
LED BOARD
EJECT BOARD
LOADING BOARD

HCD-EX100
15 15
• Indication of transistor
C
These are omitted
EB
Q
C
These are omitted
EB
IC303 #ª FE
1
2
3
4
WAVEFORMS
– MAIN (1/3) SECTION –
IC304 6XTO
IC303 %º RF AC
IC303 $¡ TE
4.8Vp-p
16.9MHz
1.1Vp-p
(PLAY)
2.3V
APPROX 500mVp-p (PLAY)
2.3V
APPROX 200m Vp-p (PLAY)
5
6
IC7010XT2
IC701 7XOUT
– MAIN (3/3) SECTION –
5MHz
5Vp-p
32.768kHz
5Vp-p
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•2: nonflammable resistor.
•5: fusible resistor.
•C: panel designation.
For printed wiring boards.
Note:
•X: parts extracted from the component side.
•®: Through hole.
•b: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•U: B+ Line.
•V: B– Line.
•H: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : RADIO, CD STOP
( ) : CD PLAY
• Circled numbers refer to waveforms.
• Signal path.
J: CD
c: digital out
• Abbreviation
CND : Canadian model.
SP : Singapore model.
HK : Hong Kong model.
KR : Korea model.
CH : Chinese model.
Note:
The components identi-
fied by mark !or dotted
line with mark !are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque !sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
• Abbreviation
CND : Canadian model.
SP : Singapore model.
HK : Hong Kong model.
KR : Korea model.
CH : Chinese model.

HCD-EX100
16 16
A
AMP
SECTION
B
AMP
SECTION
: FM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
TUNER PACK
7FM_DET_OUT
4R_OUT
6L_OUT
1
STREO
2
TUNED
3
MUTING
12
DO
DI
13CL
14
15
CE
ST
CL
DI
TUN
MUT
DO
CE
MUX
4
XO
14
XI
13
2
DATA
16
INT
RDS DECODER
IC451
X601
4.332MHz
CKO
4
XTI
5
XTO
6
27
CLOK
16
LOUT
26
DATA
D/A CONVERTER
IC304
28
MLAT
X361
16.9344MHz
RDS_DATA
17
RDS_CLK
14
PLL_CE
2
ST_MUTE
46
STEREO
100
TUNED
1
PLL_CLK
5
PLL_DATAO
4
PLL_DATAI
3
MASTER CONTROL
IC701(1/2)
DO
MUT
ST
TUN
CL
CE
DI
OPTICAL PICK-UP
BLOCK
KSM-770ACA
A
B
C
D
E
F
LD
VC
A+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q301
RF AMP
IC301
VC
12
A
5
B
6
C
7
D
8
E
11
F
10
LD
3
PD
4
IC302
MOTOR DRIVER
CH1
OUT R
13
CH1
OUT F
14
CH2
OUT R
11
CH2
OUT F
12
CH3
OUT R
18
CH3
OUT F
17
M
SLED
MOTOR
CH4
OUT R
16
CH4
OUT F
15
M
SPINDLE
MOTOR
F+
F-
T-
T+
SD-
SD+
SP-
SP+
3
CH1
R IN
2
CH1
F IN
6
CH2
R IN
5
CH2
F IN
23
CH3
R IN
24
CH3
F IN
25
CH4
S IN
20
MUTE
MDP
25
SRDR
29
SFDR
30
TFDR
31
TRDR
32
FFDR
33
FRDR
34
DIGITAL SIGNAL PROCESSOR
D/A CONVERTER
IC303
DIGITAL SERVO
64
D OUT
MNT0
MNT1
MNT2
MNT3
RFAC
50
17
RFI
16
RFO
14
FE
13
TE
22LD ON
21HOLD SW
RFDC
43
FE
39
TE
41
SE
40
XUGF
11
XPCK
12
GFS
13
C2PO
14
71
XTAI
BCLK
3
67
BCLK
DATA
2
66
PCMD
LRCK
1
65
LRCK
DIGITAL
OUT
OPTICAL CD
DIGITAL OUT
OPTICAL
IC391
4DATA
CD-L
CD-R
13
ROUT R-CH
TU-L
TU-R R-CH
6CLOK
5XLAT
77SQCK
8
SCLK
76
SQSO
15
SCOR
26
SSTP
2XRST
LIMIT
IN SW
39
SCLK
RIN
FIN
OUT1
OUT2
CD DAT
31 DA LAT
24
XLAT
32
SERVO_CK
21
SUB_Q
19
SCOR
16
XRST
23
LPH
32
LDON
33
35OPEN_SW
34
CLOSE_SW
41
OPEN
OPEN/CLOSE
S351
42CLOSE
9
7
4
2
M
IC351
M+7V
MOTOR DRIVER
M351
LOADING
MOTOR
26CD_POWER
7
SENS SENSE
18
RDS
BUFFER
Q401
SWITCH
Q781,782
CN303
CHECK
CONNECTOR
5
4
3
2
+7V CD+7V
5-2. BLOCK DIAGRAMS – TUNER/CD SECTION –

HCD-EX100
17 17
– AMP SECTION –
68
66
69
57
36 83
914 16 11
32 33 34
7 8 38 45
12
1320 28 29 47 4351 - 54 60 - 99
4448 49 50
2 1
LSPEAKER
IMPEDANCE
USE 4-16Ω
R
L
OUT
OUT
TAPE
R
L
R
I /
PHONES
J501
TM801
R CH
R CH
KEY
S601-604
S611-616,Q651 TOUCH
SWITCH
IC651,652
DIMMER SW
Q775
BACK LIGHT
ON/OFF
Q773,774
LED
DRIVER
Q622,623
Q771
CD+7V
D+5V
D781-784
(LCD BACK LIGHT)
D621
(ON/STANDBY)
LIQUID
CRYSTAL
DISPLAY
LCD701
COM0-3 SEG0-39
R-CH
R-CH
IN B2
IN D2
IN A2
REC B2
OUT2 OUTA
R-CH
IN+
CLOCK DATA LATCH
COM0 I COM3 SEG0 I SEG39 BACK LIGHT CTL KEYIO-1 KEYIO-2 REMOTE STBY PULSE POWER
VOL_CLK
VOL_DATA
VOL_STB
MUTE_A
XOUT
XIN
10 11
XT1 XT2
AMP_MUTE
SP_RELAY
STANDBYA STANDBYB MUTEA MUTEB
TAPE-L
TU-L
CD-L
TU-L
CD-L
J101
PRE AMP
IC111
MUTE
Q113
MUTE
Q501
HEADPHONE
AMP
IC501
POWER AMP
IC801
MASTER CONTROL
LCD DRIVER
IC701 (2/2)
RESET
REMOTE
CONTROL
RECEIVER
IC601
OPEN/
CLOSE
CD+7V
ST+12V
STBY
PULSE
D+5.6V
CD+5V
-B
(-15V)
+7.5V
EN
-7.5V
+B (+15V)
-B (-15V)
+7.5V
-7.5V
D934
T901
+B (+15V)
D10-13
SWITCHING
REGURATOR
IC1 ,Q21-23
CONTROL
PC1,2
IC951 ,Q951
F1
3.15A
D911
D941
D931
AC
IN
D901
D752
D+5.6V
RESET
IC751 ,Q751
3 1
3 1
4
1 2
10 9
+12V REG.
Q961-964
+5.6V
REG.
IC932
±7.5V
REG.
IC933
+7V REG.
IC931
DC DETECT
Q822,823
RY801
D701
INV
Q821
RELAY
DRIVE
Q824
Q131
A
B
TUNER/CD
SECTION
TUNER/CD
SECTION
: FM
: CD
• Signal Path
• RCH is omitted
X701
5MHz
X702
32KHz

HCD-EX100
18 18
D139 D-6
D701 F-5
D751 E-6
D752 E-5
D753 E-5
D754 D-5
IC111 C-4
IC301 E-4
IC302 F-3
IC303 D-3
IC304 C-2
IC391 B-4
IC451 G-3
IC501 B-2
IC701 G-5
IC751 E-5
Q113 D-5
Q131 D-6
Q163 D-5
Q301 F-4
Q401 B-6
Q501 A-2
Q551 B-2
Q751 D-5
Q771 G-5
Q773 G-5
Q774 G-6
Q775 G-6
Q781 E-4
Q782 E-4
5-3. PRINTED WIRING BOARD – MAIN SECTION –
• See page 14 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
11
(11)
1-682-068-
D
AMP BOARD
CN801
(Page 22)
TUNER UNIT
SUPPLIED AS THE
ASSEMBLED BLOCK
B
PANEL
BOARD
CN601
(Page 24)
C
REG BOARD
CN901
(Page 26)
A
LOADING
BOARD
CN352
(Page 22)
A
1
1
16
7814
12
1324
AK
28222115
OPTICAL PICK–UP
BLOCK
KSM–770 ACA/Z–NP
M102
(SPINDLE MOTOR)
1
2
3
4
5
6
M
M101
(SLED MOTOR)
S101
(LIMIT SW)
M
MAIN BOARD (SIDE A)
(CHASSIS)
LED
BOARD
TP782
LED
BOARD
TP781
11
(11)
1-682-068-
MAIN BOARD (SIDE B)
23 4 5 6 7 89 10 11 12
A
1
B
C
D
E
F
G
H
(Page 22)
IC701
IC304
IC302
IC501
Q551
Q501
Z3
Z6
Z5
L404
L401
L403
L405
Q401
IC451
D701
D752
Q301
FB331
D751
Q782
Q751
D753
D754
IC303
IC301
Z7
IC111
Q774
Z9
D139
FB300
FB361
Q113
Q131
L402
Q163
Q771
Q775
Q773
E
E
1
30
31
50
51
100
81
80
E
E
R401
R404
R402
R403
R408
R407
R101
R102
R151
R152
R103
R153
R112
R111
R412
R411
R116
R406
R405
R139
R135
R115
R114
R167
R164
R166
R163
R165
R756
R754
R755
R752
R753
R757
R785
R708
R709
R705
R707
R706
R704
R701
R778
R774
R775
R777
R776
R702
R703
R792
R793
R794
R453
AEP,UK,CH
R452
R365
R454
R455
R305
R306
R304
R302
R303
R301
R308
R307
R323
R322
R324
R321
R313
R312
R315
R310
R311
R331
R346
R334
R332
R333
R337
R336
R335
R339
R340
R338
R341
R342
R343
R344
R345
R361
R382 R414
R413
R384
R381
1 2 3
R383
R162
R161
R131
R132
R133
R117
R113
R512
R511
R555
R554
R505
R502
R501
R504
R503
R553 R552
R551
R362
R364
R363
R347
R348
R349
R134
R751
R710
C755
C757
C785
C704
C799
C798
C702
C701
C705
C302
C301
C304
C793
C792
C791
C457
C456
C453
C452
C458
C451
C455
C325
C313
C322
C323
C321
C324
C327
C326
C343
C311
C307
C308
C333
C309
C312
C345
C344
C347
C348
C366
C374
C367
C371
C372
C342
C341
C339
C340
C166
C165
C164
C163
C162
C337
C338
C331
C332
C335
C334
C349
C336
C758
C759
C139
C137
C136 C409
C403
C408
C402
C401
C405
C404
C116
C115
C114
C112
C113
C119
C138
C169
C134
C384
C133
C176
C177
C152 C102
C100
C151
C101
C392
C554
C553
C503
C502
C552
C361
C300
C362
C363
C373
C365
C703
C383
C299
J501
PHONES
IC391
CD
DIGITAL
OUT
LCD701
J101
TAPE
OUT
R
IC391
X701
C364
C501
C551
C391
C328
L391
CLP101
C406
X361
X601
C407
C368
CN303
C305
C314
C306
C346
C512
C784
C756
C754
X702
Q781
C511
IC751
CN702
1
16
212
13
C118
C121
C120
CN301
C303
C131
C170
CN703
C132
C167
C117
C168
C135
R409
C161
C111
C381
C382
C171
C751
CN701
CN302
CN351
C398
C399
E
E
E
E
E
3 2 1
E
E
E
E
E
41
40
25
24
1
80
65 64
14
15
1
1
5
2
CN401
1
14
5
8
61 60
41
40
80
1
20 21
14
28
15
AEP,UK,CH
L
IN
RL
TP772 TP771