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AEP Model

2005K16-1

© 2005.11

HCD-EP315 is the Amplifier, CD player, Tape
Deck and Tuner section in CMT-EP315.

Model Name Using Similar Mechanism

HCD-EP313

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

HCD-EP313

Section

Tape Transport Mechanism Type

ADR2080FR4

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

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.

System

Compact disc and digital 
audio system

Laser

Semiconductor laser 
(

λ

=780 nm)

Emission duration: 
continuous

Frequency response

2 Hz – 20 kHz (

±0.5 dB)

Recording system

4-track 2-channel stereo

Frequency response

50 – 13,000 Hz (

±3 dB), 

using Sony TYPE I 
cassettes

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

531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz) 

Antenna

AM loop antenna, external
antenna terminal

Intermediate frequency

450 kHz 

General

Power requirements

230 V AC, 50/60 Hz

Power consumption

32 watts 
0.3 watts (in the standby 
mode)

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.

2

······················································· 3

·········································································· 5

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 (ADR2080FR4) ························· 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

····························· 12

······························· 13

······································································ 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

0

0

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

······································· 36

3

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.

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.

Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

• 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

CD mechanism deck
(KSM-213EDP)

Tape cassette mechanism deck
(ADR2080FR4)