Onkyo FR 435 Service Manual

Page 1

ONKYO® SERVICE MANUAL

CD/MD RECEIVER
MODEL FR-435

Silver model

UP
UDT

SAFETY-RELATED COMPONENT WARNINGI!

COMPONENTS IDENTIFIED BY MARK A ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS
LIST ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE THESE COM-
PONENTS WITH ONKYO PARTS WHOSE PARTS
NUMBERS APPEAR AS SHOWN IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY IN-
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.

( ON KYO®
LIIIIIIII IIIIIPIIIIEIIIS

W

J

230v AC, SOHz
# 120v AC, 60Hz

TABLE OF CONTENTS

Specifications

Protection of eyes from laser beam Jurang servicing
Service procedures

Replacement of optical pick up

Index to parts and controls

Microprocessor terminal descriptzc-ns

1C block diagram and dCSCllletmA

CD adjustment procedures

Tuner adjustment procedures

MD mechanism disassembl)

MD mechanism adjustment

MD message list

Wiring view

Block diagram

PC board view from bottom sidetNCAR-6535)
Schematic diagram (Amp)

PC board view from bottom sidetNCRF-6538)
Schematic diagram (Tuner)

PC board view from bottom side(NCDG-6S42)
Schematic diagram (CD)

PC board view from bottom side(NCDG-6542)
Schematic diagram (MD)

MD mechanism exploded view

CD mechanism exploded view

Chassis exploded view

Chassis exploded view parts list

PC board parts list

Packing view

Assemble the packing form

Ref. No.3619
071999

H-ZflOUIbWN

21
22
25
28
29
31
33
35
37
39
41
43
45
47
49
5]
53
55
56
60
61

Page 2

SPECIFICATIONS

General

Power supply

AC 230 V, 50 Hz
AC 120 V. 60 Hz

Power consumption 110 w
Dimensions (W x H x D) 435 x 90 x 420 mm
Weight 8.4 kg

Amplifier

Power output

Dynamic power

Total harmonic distortion
IM distortion
Damping factor

Sensitivity and impedance

Frequency response
Tone control

Signal to noise ratio

Muting

CD player

2x43Wat4 Q 1kHz DIN
2 x36W at6fl 1kHz DIN
2x32Wat8t2 IkHz DIN
2x31 Wmin, RMS at!
1 kHz no more than 0.2 %
THD

2x50W at4 Q EIAJ
2 x 60 W at 4 Q
2 x 35 W at 8 (2
0.2 % at rated power
0.2 % at rated power
40 at 8 O
TAPE: 200 mV, 50 kt]
LINE-1 IN: 200 mV, 50 k!)
LINE-2 IN: 200 mV, 50 k9
PROCESSOR IN:

200 mV. 50 k!)
10 to 50,000 Hz: +0I-3 dB
Bass 18 dB at 100 Hz
Treble 18 dB at 10,000 Hz
8. Bass -+8 dB at 40 Hz
TAPE: 100dB (IHF A)
LINE-1 IN: 100dB (IHF A)
LINE-2 IN: 100dB (IHF A)
PROCESSOR IN:

100 dB (IHF A)
-50 dB

Signal readout system
Frequency response
Wow and flutter

Optical non-contact

5 Hz to 20 kHz (1' 1.5 dB)
Below threshold of
measurability

Mgrecorder
System

Recording system
Signal readout system

Recording tlme

Frequency response
Wow and flutter

Tuner

Tuning range

Usable sensitivity

50 dB quieting sensitivity

Capture ratio

Image rejection ratio
IF rejection ratio
Signal to noise ratio

Selectivity
Harmonic distortion

Frequency response
Stereo separation

MiniDisc digital audio
system

Magnetic field modulation
overwrite system

Optical non-contact

Max. 80 min. (when using
a 80 minute recording
time disc)

10 Hz to 20 kHz (:1: 2 d8)
Below threshold of
measurability

87.50 to 108.00 MHz

(50 kHz steps)

Mono:

12.8 dBf. 1.2 pV (75 Q IHF)

LOW (75 9 DIN)

Stereo:

18.0 dBf. 2.2 W (75 Q IHF)
25.0 W (75 9 DIN)

Mono:

18.8 dBf. 2.4ttV (75 0)

Stereo:

38.8 dBf. 24 0 _~.-.v {75 O)

2.0 dB

85 dB

90 dB

Mono : 73 dB IHF

Stereo : 67 dB IHF

50 dB DIN (1:300 kHz at

40 kHz devi.)

Mono: 0.5 %

Stereo: 0.8 %

30 to 15,000 Hz (:1.5 dB)

40 dB at 1,000 Hz

30 dB at 100 to 10,000 Hz

Specifications and features are subject to change

without noitee.

CAUTION ON REPLACEMENT OF OPTICAL PICKUP

The laser diode in the optical pickup block is sensitive to
static electricity, surge current and etc. The components
are liable to be damaged or its reliability remarkably
deteriorated.

PRECAUTIONS

1.Ground for the work-desk.
Place a conductive sheet such as a sheet of copper
(with impedance lower than 10Mohm) on the work-
desk and place the set on the conductive sheet so that
the chassis can be grounded.

2.Grounding for the test equipments and tools.
Test equipments and toolings should be grounded in
order that their ground level is the same the ground of
the power source.

During repaincarefully take the following precautions.
(The following precautions are included in the service
parts.)

. Grounding for the human body.
Be sure to put on a wrist-strap that is properly
grounded.
Be particularly careful when wearing synthetic fiber
clothes, or air is dry.

. Select a soldering iron that permits no leakage and
have the tip of the iron well-grounded.

. Do not check the laser diode terminals with the probe
of a circuit tester or oscilloscope.