Sony HCD-EP313 - Personal Component System User manual

HCD-EP313
US Model
Canadian Model
AEP Model
UK Model
SERVICE MANUAL
MICRO HI-FI COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-237-01
2003D167800-1
© 2003.04
HCD-EP313 is the Amplifier, CD player, Tape
Deck and Tuner section in CMT-EP313.
SPECIFICATIONS
Ver 1.0 2003. 04
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type KSM-213EDP
Section Base Unit Name BU-K7BD44B
Optical Pick-up Name KSS-213E/C2N
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type ADR2080FR4
— Continued on next page —
Amplifier section
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6-ohm loads, both channels driven, from 120 -
10,000 Hz; rated 10 watts per channel minimum RMS
power, with no more than 10% total harmonic
distortion from 250 milliwatts to rated output.
North American model:
Continuous RMS power output (reference):
10 + 10 W
(6 ohms at 1 kHz, 10%
THD)
European model:
DIN power output (rated): 7 + 7 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
10 + 10 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
20 + 20 W
Other models:
The following measured at AC 230 V or AC 120 V, 50/
60 Hz
DIN power output (rated): 7 + 7 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
10 + 10 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
MD IN (phono jacks):
Sensitivity 500 mV,
impedance 47 kilohms
Outputs
PHONES (stereo minijack):
Accepts headphones with
an impedance of 8 ohms or
more
SPEAKER: Accepts impedance of 6 to
16 ohms.
CD player section
System Compact disc and digital
audio system
LaserSemiconductor laser
(
λ =780 nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz (50-kHz
step)
Antenna FM lead antenna
Antenna terminals 75 ohms balanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Pan-American model: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model: 531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz

2
HCD-EP313
TABLE OF CONTENTS
General
Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Australian model: 230 V AC, 50/60 Hz
Mexican model: 120 V AC, 60 Hz
Argentine model: 220 – 230 V AC, 50/60 Hz
Taiwan model: 110 – 120 V AC, 60 Hz
Other models: 230 V AC, 50/60 Hz
Power consumption
North American model: 35 watts
European model: 32 watts
0.3 watts (in the standby
mode)
Other models: 32 watts
Dimensions (w/h/d) Approx. 148 ×233 ×208
mm
Mass Approx. 2.9 kg
Supplied accessories Remote (1)
R6 (size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Design and specifications are subject to change
without notice.
1. SERVICING NOTES ······················································· 3
2. GENERAL ·········································································· 5
3. DISASSEMBLY
3-1. Rear Cabinet ··································································· 7
3-2. CD Cabinet Section ························································ 8
3-3. Front Panel Section ························································· 8
3-4. CONTROL Board, BACK LIGHT Board ······················ 9
3-5. Tape Mechanism Deck ···················································· 9
3-6. Cassette Door Assy ······················································· 10
3-7. MAIN Board, POWER Board ······································ 10
3-8. CD Mechanism Deck (KSM-213EDP)························· 11
3-9. Optical Pick-up (KSS-213E/C2N) ································ 11
4. MECHANICAL ADJUSTMENTS ····························· 12
5. ELECTRICAL ADJUSTMENTS ······························· 13
6. DIAGRAMS ······································································ 16
6-1. Block Diagram ······························································ 17
6-2. Printed Wiring Board – CD Section – ························· 18
6-3. Schematic Diagram – CD Section – ···························· 19
6-4. Printed Wiring Board – MAIN Section
(COMPONENT SIDE) – ······· 20
6-5. Printed Wiring Board – MAIN Section
(CONDUCTOR SIDE) – ······· 21
6-6. Schematic Diagram – MAIN Section – ······················· 22
6-7. Printed Wiring Board – CONTROL Section
(COMPONENT SIDE) – ······· 23
6-8. Printed Wiring Board – CONTROL Section
(CONDUCTOR SIDE) – ······· 24
6-9. Schematic Diagram – CONTROL Section – ··············· 25
6-10. Printed Wiring Board – POWER Section – ··············· 26
6-11. Schematic Diagram – POWER Section – ·················· 27
6-12. IC Pin Function Description ······································· 30
7. EXPLODED VIEWS
7-1. Overall Section ····························································· 32
7-2. Front Panel Section ······················································· 33
7-3. CD Cabinet Section ······················································ 34
7-4. Optical Pick-up Block (KSM-213EDP) ······················· 35
8. ELECTRICAL PARTS LIST ······································· 36
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE WITH
MARK 0ON 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES 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.

3
HCD-EP313
SECTION 1
SERVICING NOTES
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ F
AC
voltmete
r
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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 aVOM
or battery-operatedAC 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
passiveVOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
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
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged 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.

4
HCD-EP313
Service Position of the CD Mechanism Deck
Service Position of the Tape Cassette Mechanism Deck

5
HCD-EP313
SECTION 2
GENERAL This section is extracted
from instruction manual.
Main unit
BASS/TREBLE 5(12)
Cassette compartment qa
DISPLAY wd (9, 14)
Display window 2
DSG 4(12)
MD 6(15)
PHONES jack qk
PLAY MODE qj (6, 7)
PRESET +/– 8(9)
Remote sensor 1
TUNER BAND 7(8, 9)
TUNING +/– 0(8, 9)
VOLUME 9(13)
?/1 (power) wa (5, 9, 13)
m/M (fast forward/rewind)
0(6)
./> (go back/go forward)
8(5, 6, 7, 12, 13)
x(stop) ql (6, 7, 11, 17)
X(pause) w; (6)
CD N(play) ws (6, 7, 11)
ZPUSH OPEN/CLOSE (open/
close) 3(6)
TAPE
m/M (fast forward/rewind)
qf (10)
xZ (stop/eject) qd (10, 11)
X(pause) qs (10, 11)
N(play) qg (10)
z(record) qh (11)
List of button locations and reference pages
How to use this page
Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.
Ill
us
t
ra
ti
on num
b
er
r
DISPLAY wd (9, 14)
RR
Name of button/part Reference page
ALPHABETICAL ORDER
A – M P – Z
BUTTON DESCRIPTIONS
12 3
4
5
6
7
8
9
q;
qa
q
s
q
d
q
f
q
g
q
h
qj
qk
ql
w;
wa
ws
wd

6
HCD-EP313
1
Press ?/1to turn on the system.
2
Press CLOCK/TIMER SET.
3
Press ./>repeatedly to set the
hour.
4
Press CLOCK/TIMER SET.
5
Press ./>repeatedly to set the
minute.
6
Press CLOCK/TIMER SET.
The clock starts working.
To adjust the clock
1
Press CLOCK/TIMER SET.
2
Press ./> to select the clock display,
then press CLOCK/TIMER SET.
3
Do the same procedures as step 3 to 6
above.
Setting the clock
Remote control
BASS +/– 0(12)
CLEAR 8(8, 9)
CLOCK/TIMER SELECT w;
(13)
CLOCK/TIMER SET wa (5, 13)
DISPLAY 2(9, 14)
DSG qa (12)
MD qk (15)
PLAY MODE/DIRECTION qd
(6, 7)
PRESET +/– 5(9)
REPEAT/FM MODE qf (7, 9)
SLEEP ql (12)
TREBLE +/– 9(12)
TUNER BAND qh (8, 9)
TUNER MEMORY qs (8)
TUNING +/– 6(8, 9)
VOL +/– 7(13)
?/1 (power) 1(5, 9, 13)
m/M (fast forward/rewind)
6(6)
./> (go back/go forward)
5(5, 6, 7, 13)
x(stop) 4(6, 7, 11, 17)
X(pause) 3(6)
CD N(play) qj (6, 7, 11)
TAPE nN qg (10)
ALPHABETICAL ORDER
A – M P – Z
BUTTON DESCRIPTIONS
1
wa
w;
ql
qk
qj
qh
qg
qf
qd
qs
qa
2
3
4
5
6
7
8
9
0

7
HCD-EP313
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
• This set can be disassembled in the order shown below.
3-1. Rear Cabinet
REAR CABINET
CD MECHANISM DECK
(KSM-213EDP)
OPTICAL PICK-UP
(KSS-213E/C2N)
TAPE MECHANISM DECK
(ADR2080FR4)
CONTROL BOARD,
BACK LIGHT BOARD
MAIN BOARD,
POWER BOARD
CASSETTE DOOR ASSY
SET
CD CABINET SECTION
FRONT PANEL SECTION
3 five screws
(+BVTP 3
× 8)
1 two screws
(+BVTP 3
× 8
)
5 four screws
(+KTP 3
× 12)
4 four screws
(+KTP 3
× 12)
6 rear cabinet
2 three screws
(+BTP 3
× 8)

8
HCD-EP313
3-2. CD Cabinet Section
3-3. Front Panel Section
1 screw
(+BVTP 3
× 8)
6 connector
2p (CN101)
7 CD cabinet section
2 w ire (flat type)
21p (CN101)
3 two claws
4 two claws
5
2 two claws
1 two screws
(+BVTP 3
× 10
)
3 screw
(+BTP 3
× 8)
5 connector
7p (CN502)
4 connector 30p
(CN202) (board to board)
6 connector
8p (CN501)
7
8 front panel section

9
HCD-EP313
3-4. CONTROL Board, BACK LIGHT Board
3-5. Tape Mechanism Deck
1 volume knob
5 CONTROL board
3 nine screws
(+BVTP 3 × 8)
2 screw
(+BVTP 3 × 10)
4 w ire (flat type)
21p (CN301)
6 two claws
7 connector
2p (CN305)
8 BACK LIGHT
board
3 two screws
(+BVTP 3 × 10)
2 screw
(+BVTP 3 × 10)
4 tape mechanism deck
1 Open the cassette door.

10
HCD-EP313
3-6. Cassette Door Assy
3-7. MAIN Board, POWER Board
1 two claws
2 cassette door assy
7 two cushions
4 PT PWB cover
2 screw
(+BVTP 3
× 8)
5 four screws
(+BVTP 4 × 12)
6 shield plate trans
3 MAIN board
8 POWER board
1 connector
6p (CN901)

11
HCD-EP313
2 two screws
(+PWH 2.6
× 10)
9 screw
(+P 2
× 5)
7 two cushion
rubbers
8 four remove soldrings.
6 two cushion
rubbers
3 two screws
(+PWH 2.6
× 10)
1 CD deck cover
4 three claws
5 panel CD
qa CD board
qs CD mechanism deck
(KSM-213EDP)
q; w ire (flat type)
16p (CN102)
2 gear (A)
1 claw
5 sled shaft
6 KSS-213E/C2N
4
3
3-8. CD Mechanism Deck (KSM-213EDP)
3-9. Optical Pick-up (KSS-213E/C2N)

12
HCD-EP313
2.94 – 7.84 mN • m
(30 to 79 g • cm)
(0.42 – 1.11 oz • inch)
0.15 – 0.59 mN • m
(2 to 6 g • cm)
(0.03 – 0.08 oz • inch)
0.15 – 0.59 mN • m
(2 to 6 g • cm)
(0.03 – 0.08 oz • inch)
0.15 – 0.59 mN • m
(2 to 6 g • cm)
(0.03 – 0.08 oz • inch)
6.86 – 17.64 mN • m
(70 to 179 g • cm)
(0.98 – 2.49 oz • inch)
9.8 mN • m or more
(100 g • cm or more)
(1.4 oz • inch or more)
9.8 mN • m or more
(100 g • cm or more)
(1.4 oz • inch or more)
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head demag-
netizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Torque meter Meter reading
SECTION 4
MECHANICAL ADJUSTMENTS

13
HCD-EP313
SECTION 5
ELECTRICAL ADJUSTMENTS
[Record/Playback Head Azimuth Adjustment]
Procedure:
1. Mode : Playback
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1 dB of peak.
test tape
P-4-A100
(10kHz, –10dB) MAIN board
J203
speaker terminal
level meter
set +
–
L-CH
peak
R-CH
peak
screw
position
output
level within
1 dB
L-CH
peak
R-CH
peak
screw
position
within 1dB
Signal Used forTape
P-4-A100
WS-48B
10 kHz, –10 dB
3 kHz, 0 dB
Azimuth Adjustment
Tape Speed Adjustment
DECK SECTION 0 dB=0.775V
1. Demagnetize the record/playback head with a head demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Record/Playback/Erase Head
[Tape Speed Check]
Procedure:
1. Turn the power on.
2. Insert the WS-48B into deck.
3. Press the Nbutton of deck.
4. Check the reading of frequency counter becomes 3000 ± 90 Hz.
Sample Value of Wow and flutter
W.RMS (JIS) less than 0.3%
(test tape: WS-48B)
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
oscilloscope
set
Waveform of oscilloscope
in phase 45
°
90 °
135 °
180 °
good wrong
MAIN board
J203
speaker terminal
L
R
Adjustment Location: Record/Playback Head.
Note: Refer to “3-6. Cassette Door Assy” (see page 10
)
adjustment screw

14
HCD-EP313
RFDC signal waveform
Checking Location: CD board (Conductor side)
RFAC Level Check
Connection:
Procedure:
1. Connect an oscilloscope to test point TP (RFAC) and TP (VC)
on the CD board.
2. Turn the power on.
3. Put the disc (YEDS-18) in to playback the number five track.
4. Confirm that oscilloscope waveform is clear and check RFAC
signal level is correct or not.
Note: A clear RFAC signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
RFAC signal waveform
Checking Location: CD board (Conductor side)
CD SECTION
Note:
1. CD Block is basically designed to operate without adjustment. There-
fore, 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
Connection:
Procedure:
1. Connect an oscilloscope to test point TP (FE) and TP (DVC)
on the CD board.
2. Turn the power on.
3. Put the disc (YEDS-18) in and turned power switch on again
and actuate the focus search. (actuate the focus search when
disc table is moving in and out)
4. Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 2 ± 1
Vp-p.
S-curve waveform
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
brightness to obtain best waveform.
Checking Location: CD board (Conductor side)
RFDC Level Check
Connection:
Procedure:
1. Connect an oscilloscope to test point TP (RFDC) andTP (DVC)
on the CD board.
2. Turn the power on.
3. Put the disc (YEDS-18) in to playback the number five track.
4. Confirm that oscilloscope waveform is clear and check RFDC
signal level is correct or not.
Note: A clear RFDC signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
+
–
CD board
TP (FE)
TP (DVC)
oscilloscope
A
B
symmetry
within 2
± 1 Vp-p
+
–
CD board
TP (RFDC)
TP (DVC)
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 0.7
± 0.2 Vp-p
+
–
CD board
TP (RFAC)
TP (VC)
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 0.9
± 0.4 Vp-p

1515
HCD-EP313
E-F Balance Check
Connection:
Procedure:
1. Connect an oscilloscpe to test point TP (TE) and TP (DVC) on
the CD board.
2. AC is put in pushing CD Nbutton.
3. FL tube carries out all lights and goes into CD test mode.
4. Put the disc (YEDS-18) in to playback the number five track.
5. Press the CD Nbutton. (The tracking servo and the sledding
servo are turned OFF)
6. Check the level B of the oscilliscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse Waveform
7. Press the CD Nbutton. (The tracking servo and sledding
servo are turned ON)
Confirm the C (DC voltage) is almost equal to the A (DC
voltage) is step 4.
8. To exit from this mode, turn the power off.
Notes: •Always move the optical pick-up to most inside track when
exiting from this mode. Otherwise, a disc will not be unloaded.
•Do not run the sled motor excessively, otherwise the gear can
be chipped.
Traverse Waveform
Checking Location: CD board (Conductor side)
+
–
CD board
TP (TE)
TP (DVC)
oscilloscope
0V
B
level: 1.15 ± 0.5 Vp-p
Center of
the waveform
A (DC
voltage)
0V
Tracking servo
Sled servo
ON
C (DC
voltage)
Tracking servo
Sled servo
OFF
Checking Location:
– CD BOARD (Conductor Side) –
TP (VC)
TP (FE)
TP (TE) TP
(RFDC)
TP
(DVC)
TP
(RFAC)
IC103
IC101

1616
HCD-EP313 SECTION 6
DIAGRAMS
• Circuit Boards Location
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.
•f: internal component.
•2: nonflammable resistor.
•1: fusible resistor.
•C: panel designation.
For printed wiring boards.
Note:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•f: internal component.
•: Pattern from the side which enables seeing.
•A: B+ Line.
•B: B– Line.
•Voltagesare takenwith aVOM(Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Abbreviation
CND : Canadian model
•Signal path.
F: TUNER (FM)
J: CD
d: MD
E: PB (TAPE)
a: REC (TAPE)
•Waveforms
– CD Board –
1.1Vp-p
1IC103 qg (RFAC)
(CD Play Mode)
2IC101 el (FE)
(CD Play Mode)
200mV/DIV, 1 µ s /DIV
50mV/DIV,
200 µ s /DIV
100mV/DIV, 200 µ s /DIV
1V/DIV, 20ns /DIV
200mVp-p
250mVp-p
3IC101 ra (TE)
(CD Play Mode)
4IC101 yj (XTAO)
5.4Vp-p
59ns
6 IC301 732kHz OUT
1V/DIV, 10 µ s /DIV
5V/DIV,
10 ms /DIV
5 IC301 08.6MHz OUT
10Vp-p
20
m s
2.4Vp-p
30
µ s
7Q453,Q454 collector
(Rec mode)
5V/DIV, 5 µ s /DIV
10Vp-p
10
µ s
– CONTROL Board – – MAIN Board –
Note:
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
pièceportantlenumérospécifié.
•Indication of transistor
C
BThese are omitted. E
Q
B
These are omitted.
CE
MAIN board
CONTROL board
BACK LIGHT board
TRANSFORMER board
CD board

1717
HCD-EP313
6-1. Block Diagram
: FM
: CD
• Signal Path
• RCH is omitted due to same as L-CH.
: MD
: PB (TAPE)
: REC (TAPE)
R-CH
+VM
ERASE
HEAD
REC/PB
HEAD
DECK BLOCK
REC/PB
SWITCH
DATA
79
PLL CLK
78
PLL CE
27
µCON
IC301
IFC
75
L
R
MD
J201
MUTE CONT
Q403
J202
PHONES
R CH
L
R
FUCTION
KEY
REMOTE
CONTROL
RECEIVER
IC303
S302,304,306
S308,310-312
LED302-307
(BACK RIGHT)
TUNER UNIT
L-CH
R-CH R-CH
D OUT
D IN
CLK
CE
TUNED
R-CH
TUNED
76
Q504-511
L451
BIAS
Q450,451
MECHA BLOCK
MOTOR
DRIVE
Q501,502
BIAS
53
XT1
6
XT2
7
X301
32.768kHz
X IN
19
X OUT
10
X302
8.64MHz
MUTE
Q401
22
DSG Q601
23
RMC
FUCTION
KEY
S301,303,305,307
S309,313,314
16
KEY2
55
BK LED
31
RESET
SWITCH
Q302
5
RESET RESET
IC302
21
59
POWER DOWN
D901-904
RELAY
DRIVE
AC
IN
PT902
SUB TRANS
POWER
CONTROL
Q404,405
Q200 RY901
17
KEY1
REG
Q701
+10V +VM
PB/REC EQ AMP
IC601
AUX L
19 18
OUT L
TU L
23
TAPE L
2
CD L
21
16
OUT R R-CH
13
CONT
28
REC OUT
TU MUTE
49
STEREO
74
STEREO
MUTE
R-CH
DECK
MOTOR
DECK1
50
MOTOR
52
CD DATA
80
OPEN
CLOSE
CD OPEN/CLOSE
POWER AMP
IC204
R CH
J203
SPEAKER
SEG0
SEG20
61
63
COM0
COM2
LIQUID CRYSTAL
DISPLAY
LCD301
VOL
ENCODER
S315
13
VOL ENC
+5V
REG
Q303,304
µCON +B
VM
D301
LINE
FILTER
L901
V ECO
PT901
POWER
TRANS
+7V
REG
Q402
CD +7V
+VM
REG
IC200
+VM
AC
DET
Q206
HOLD
Q205
OPTICAL PICK-UP
BLOCK
(KSM-213EDP)
A
B
C
D
E
F
LD
VC
+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q101
RF AMP
IC103
VC
27
A
6
B
7
C
8
D
9
E
10
F
11
LD
1
PD
2
MOTOR/COIL DRIVE
IC102
CH1RO
13
CH1FO
14
CH2RO
11
CH2FO
12
CH3RO
18
CH3FO
17
M
M101
SLED
MOTOR
CH4RO
16
CH4FO
15
M
M102
SPINDLE
MOTOR
F+
F-
T-
T+
3
CH1RI
2
CH1FI
6
CH2RI
5
CH2FI
23
CH3RI
24
CH3FI
25
CH4INS
20
MUTE
MDP
26
SFDR
28
SRDR
29
TRDR
31
TFDR
30
FRDR
33
FFDR
32
DIGITAL SERVO
IC101
RFDC
43
17
FEI
28
RFDCO
16
FE
18
TE
29
RFDCI
12
SW
FE
39
TE
41
SE
40
72
L OUT
75
R OUT
5
DATA
R-CH
7
CLOK
6
XLAT
2
SQCK
9
SCLK
20
SCOR
1
SQSO
27
SSTP
66
XTAI
67
XTAO
3
XRST
S101
LIMIT
IN SW
X101
16.9344MHz
8
SENS
RFAC
51
15
RFAC
+3.3V
REG
Q102,D101
+3.3V +5.5V
M
REC
PLAY
DECK
POWER
BIAS
OSC
Q453
Q454
P CONT
Q702 TU ON
71
DECK3
58
DECK2
51
CD CLK
1
LATCH
70
C SQCK
72
SCOR
20
SQSO
2
SENS
73
XRST
69
PWM1
3
PWM2
65
PWM3
68
LDON
4
T SW
18
12
HOLD
71
CD ON
24
38
41
46
.
LED
DRIVE
Q301
56STBY LED LED
DRIVE
Q306 LED301
ECO LED
D306
D305
14MUTE
48AMP STBY
8
L OUT +
STBY
5
L IN
4
9
L OUT -
MUTE
6
D211
31
IC800
D201-204
IC601 VSS
D213
D212
D206
D205
POWER AMP
VCC
+5.5V
REG
Q406
CD +5.5V
21
POWER
V ECO

1818
HCD-EP313
6-2. PrintedWiring Board – CD Section –
Ref. No. Location
D101 F-5
IC101 E-4
IC102 C-5
IC103 D-2
Q101 C-2
Q102 G-5
• Semiconductor
Location
• See page 16 for Circuit Boards Location.
IC102
IC101
IC103
TP (VC)
TP (RFAC)
TP (DVC)
CN301
(Page 23)
1-680-849-
B
M101
TP(RF)
M102
KSS-213E/C2N
12
A
B
C
D
E
F
G
345678
CONTROL

1919
HCD-EP313
6-3. Schematic Diagram – CD Section – • See page 16 forWaveforms. • See page 28 for IC Block Diagrams.
KSS-213E/C2N
CN301
(Page 25)
0uH
0uH
B
CONTROL
TP
(RF)
TP(VC)
M102
M101
C199
470p
C150
0.1

2020
HCD-EP313
6-4. PrintedWiring Board – MAIN Section (COMPONENT SIDE) – • See page 16 for Circuit Boards Location.
IC800
IC204
IC200
TO
DECK BLOCK
(HEAD)
J202
PHONES
TO
DECK BLOCK
(MOTOR)
J203
SPEAKER
IMPEDANCE
USE 6-16Ω
J201
MD
L
R
(TO TUNER UNIT)
ANTENNA
TO
(CD DOOR)
1
2
4
5
9
11
10
8
76 3
1-688-567
MAIN BOARD
(COMPONENT SIDE)
L
R
C
TO
TRANSFORMER
BOARD
CN901
(Page 26)
A
TO CONTROL
BOARD
CN302
(Page 23)
12
A
E
D
C
B
F
G
H
3456 8
7910
Ref. No. Location
D200 H-4
D201 H-6
D202 G-7
D203 H-6
D204 G-7
D205 G-6
D206 G-7
D207 F-6
D209 C-2
D210 C-2
D211 E-6
D212 H-6
D213 H-6
D403 F-6
D404 F-6
D405 F-5
D501 C-7
D602 C-5
D603 C-5
D801 F-4
D802 D-9
D803 F-3
D804 D-8
IC200 G-6
IC204 H-4
IC800 F-4
Q205 C-4
Q206 B-4
Q402 F-6
Q404 F-6
Q405 F-6
Q406 F-5
Q451 D-6
Q453 D-7
Q454 D-7
Q502 F-6
• Semiconductor
Location