JVC RCEZ-31, RCEZ-31-BB, RCEZ-31-BE, RCEZ-31-BEN, RCEZ-31-BEV Service manual
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SERVICE MANUAL
MB593200612SERVICE MANUAL
CD PORTABLE SYSTEM
RC-EZ35SB,RC-EZ35SE,
RC-EZ35SEN,RC-EZ35SEV,
RC-EZ31BB,RC-EZ31BE,
RC-EZ31BEN,RC-EZ31BEV
SERVICE POLICY
No service part is available for this model.
Exchange only.
COPYRIGHT © 2006 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
COPYRIGHT © 2006 Victor Company of Japan, Limited
No.MB593
2006/12
SPECIFICATION
RC-EZ35
Compact disc player section Type Compact disc player
Signal detection Non-contact optical pick-up (semicondicator lazer)
Number of channels 2 channels
Radio section Frequency ranges FM 87.5 MHz - 108.0 MHz
AM 522 kHz - 1 629 kHz
Antennas Telescopic antenna for FM
Ferrite core antenna for AM
Cassette deck section Track 4-track 2-channel stereo
Motor Electronic governor DC motor for capstan
Heads Hard permalloy head for recording/playback, magnetic head for erase
Fast wind time Approx. 120 sec. (C-60 cassette)
General Speaker 10 cm × 2 (4 Ω, 3 W)
Power output 4 W (2 W + 2 W) at 4 Ω (10% THD) (IEC268-3)
Output terminals PHONES × 1 (Ø 3.5 mm, stereo)
Power supply AC 230 V , 50 Hz
DC 12 V ("R20/D (13F)" cells × 8)
Power consumption 17 W (at operation)
1.5 W (at standby)
Dimentions 435 mm (W) × 156 mm (H) × 241 mm (D)
Mass Approx. 2.8 kg (without batteries)
RC-EZ31
Compact disc player section Type Compact disc player
Signal detection Non-contact optical pick-up (semicondicator lazer)
Number of channels 2 channels
Radio section Frequency ranges FM 88 MHz - 108.0 MHz
AM 530 kHz - 1 600 kHz
Antennas Telescopic antenna for FM
Ferrite core antenna for AM
Cassette deck section Track 4-track 2-channel stereo
Motor Electronic governor DC motor for capstan
Heads Hard permalloy head for recording/playback, magnetic head for erase
Fast wind time Approx. 120 sec. (C-60 cassette)
General Speaker 10 cm × 2 (4 Ω, 3 W)
Power output 4 W (2 W + 2 W) at 4 Ω (10% THD) (IEC268-3)
Output terminals PHONES × 1 (Ø 3.5 mm, stereo)
Power supply AC 230 V , 50 Hz
DC 12 V ("R20/D (13F)" cells × 8)
Power consumption 13 W (at operation)
1.5 W (at standby)
Dimentions 435 mm (W) × 156 mm (H) × 241 mm (D)
Mass Approx. 2.8 kg (without batteries)
Design and specifications are subject to change without notice.
1-2 (No.MB593)
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purposes. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be performed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety characteristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassembling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
0.15 F AC TYPE
Place this
probe on
1500 10W
Good earth ground
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of preforming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer.
(This regulation dose not Except the J and C version)
each exposed
metal part.
(No.MB593)1-3
1.5 Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
REPRODUCTION AND POSITION OF LABELS and PRINT
WARNING LABEL and PRINT
1-4 (No.MB593)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB593)1-5
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the Rear cabinet assembly
(See Fig.1 to 4)
(1) Remove the four screws A and five screws B attaching the
Rear cabinet assembly. (See Fig.1)
(2) Disconnect the Rod antenna wire from post pin of the Tun-
er board assembly. (See Fig.2)
(3) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN101
former board assembly. (See Fig.3)
(4) Disconnect the connector wire from Capstan motor con-
nected to connector CN102
board assembly. (See Fig.3)
(5) Remove the solder the grand wire from Tuner board sol-
dered to shield plate. (See Fig.4)
of the Power transformer
of the Power trans-
BB
A
CN101CN102
Power transformer board
Fig.1
Rod antenna wire
Fig.3
B
Ground wire
Shield plate
Fig.4
1-6 (No.MB593)
Tuner board assembly Post pin
Fig.2
3.1.2 Removing the Top cabinet assembly
(See Fig.5, 6)
(1) Disconnect the connector wire from Cassette mechanism
assembly connected to connector CN205
board assembly. (See Fig.5)
(2) Disconnect the connector wire from speaker connected to
connector CN301
Fig.5)
(3) Remove the solder the grand wire from Cassette mecha-
nism assembly soldered to Amplifier board assembly. (See
Fig.5)
(4) Remove the three screws C attaching the Top cabinet as-
sembly. (See Fig.6)
of the Amplifier board assembly. (See
of the Amplifier
CN205
CN301
Ground wire
Fig.5
CC
3.1.3 Removing the Cassette mechanism assembly
(See Fig.7)
(1) Remove the four screws D attaching the Cassette mecha-
nism assembly.
C
Fig.6
DD
D
Fig.7
(No.MB593)1-7
3.1.4 Removing the Amplifier board assembly
(See Fig.8, 9)
(1) Disconnect the card wire from LCD board assembly con-
nected to connector CN701 of the Amplifier board assembly. (See Fig.8)
(2) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN901
board assembly. (See Fig.8)
(3) Disconnect the connector wire from CD door switch con-
nected to connector CN906
bly. (See Fig.8)
(4) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN101
assembly. (See Fig.9)
(5) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN801
jack board assembly. (See Fig.9)
(6) Remove the three screws E attaching the Amplifier board
assembly. (See Fig.8)
of the Amplifier board assem-
of the CD servo
of the Tuner board
of the Headphone
CN701 CN906
Amplifier board
assembly
E
assembly
CN801
CN901CD servo board
Fig.8
E
1-8 (No.MB593)
Fig.9
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