JVC RC-EZ35SB User manual

SERVICE MANUAL
COPYRIGHT © 2006 Victor Company of Japan, Limited No.MB593
2006/12
CD PORTABLE SYSTEM
MB593200612SERVICE MANUAL
RC-EZ35SB,RC-EZ35SE,
RC-EZ35SEN,RC-EZ35SEV,
RC-EZ31BB,RC-EZ31BE,
RC-EZ31BEN,RC-EZ31BEV
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
SERVICE POLICY
No service part is available for this model.
Exchange only.

1-2 (No.MB593)
SPECIFICATION
RC-EZ35
RC-EZ31
Design and specifications are subject to change without notice.
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)
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)

(No.MB593)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. 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 per-
formed 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 characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice 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 charac-
teristics 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 reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna 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, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent 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, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W 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.).
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 pre-
forming 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)
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE

1-4 (No.MB593)
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.
REPRODUCTION AND POSITION OF LABELS and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
WARNING LABEL and PRINT

(No.MB593)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MB593)
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 Aand five screws Battaching 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 of the Power trans-
former board assembly. (See Fig.3)
(4) Disconnect the connector wire from Capstan motor con-
nected to connector CN102 of the Power transformer
board assembly. (See Fig.3)
(5) Remove the solder the grand wire from Tuner board sol-
dered to shield plate. (See Fig.4)
Fig.1
Fig.2
Fig.3
Fig.4
ABB
B
Rod antenna wire
Tuner board assembly Post pin
Power transformer board
CN101CN102
Ground wire
Shield plate

(No.MB593)1-7
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 of the Amplifier
board assembly. (See Fig.5)
(2) Disconnect the connector wire from speaker connected to
connector CN301 of the Amplifier board assembly. (See
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 Cattaching the Top cabinet as-
sembly. (See Fig.6)
Fig.5
Fig.6
3.1.3 Removing the Cassette mechanism assembly
(See Fig.7)
(1) Remove the four screws Dattaching the Cassette mecha-
nism assembly.
Fig.7
CN205
Ground wire
CN301
CC
C
DD
D

1-8 (No.MB593)
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 assem-
bly. (See Fig.8)
(2) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN901 of the CD servo
board assembly. (See Fig.8)
(3) Disconnect the connector wire from CD door switch con-
nected to connector CN906 of the Amplifier board assem-
bly. (See Fig.8)
(4) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN101 of the Tuner board
assembly. (See Fig.9)
(5) Disconnect the connector wire from Amplifier board as-
sembly connected to connector CN801 of the Headphone
jack board assembly. (See Fig.9)
(6) Remove the three screws Eattaching the Amplifier board
assembly. (See Fig.8)
Fig.8
Fig.9
E
E
CN701 CN906
CN901CD servo board
assembly
Amplifier board
assembly
CN801

(No.MB593)1-9
3.1.5 Removing the Headphone jack board assembly
(See Fig.10)
(1) Remove the solder the grand wire from LCD board assem-
bly soldered to Headphone jack board assembly.)
(2) Remove the one screw Fattaching the Headphone jack
board assembly.)
(3) Disconnect the connector wire from Function board assem-
bly connected to connector CN707 of the Headphone
board assembly.
Fig.10
3.1.6 Removing the Tuner board assembly
(See Fig.11)
(1) Remove the solder of the grand wire from Function board
assembly soldered to Tuner board assembly.
(2) Disconnect the connector wire from Function board assem-
bly connected to connector CN102 of the Tuner board as-
sembly.
(3) Remove the tree screws Gattaching the Tuner board as-
sembly.
Fig.11
Solder point CN707
Ground wire
F
Solder point
CN102
G
G

1-10 (No.MB593)
3.1.7 Removing the Function board assembly
(See Fig.12)
(1) Disconnect the card wire from LCD board assembly con-
nected to connector CN103 of the Function board assem-
bly.
(2) Remove the four screws Hattaching the Function board
assembly.
Fig.12
3.1.8 Removing the Power switch board assembly
(See Fig.13)
(1) Disconnect the connector wire from LCD board assembly
connected to connector CN709 of the Power switch board
assembly.
(2) Remove the three screws Jattaching the Power switch
board assembly.
Fig.13
CN103
H
HH
H
J
J
CN709

(No.MB593)1-11
3.1.9 Removing the LCD board assembly
(See Fig.14)
(1) Remove the two screws Kattaching the LCD board assem-
bly.
Fig.14
3.1.10 Removing the CD mechanism assembly
(See Fig.15)
(1) Removing the four screws Lattaching the CD mechanism
assembly.
Fig.15
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
KK
L
L
L
L

< MEMO >

2-13
SECTION 5
TROUBLESHOOTING
5.1 BLOCK DIAGRAM
5.1.1 Block diagram for RC-EZ35
FM RF FM OSC
FM ANT.
BPF
AM ANT.
AM OSC
FM F/E, IF/DET/MPX
IC101
AM RF/IF/DET
IC102
PLL
IC501
FUNCTION SELECT
EQ/BASS/VOL CONTROL
PLAY OUT
REC IN IC201
R/P AMP
+8V
BIAS OSC
R/P HEAD
TA SW.
DECK SW
+
-M
TAPE MOTOR
RESET
TU SW.
+8V
CD DOOR SW.
DISC
PICKUP
RF + D-SERVO +
IC901
MP3 DECODER+1M DRAM
IC701
MCU
LCD
KEY
R.C.
IC301
POWER AMP.
L SPEAKER BOX
R SPEAKER BOX
AC IN
RECTIFIER
+5V
Q411
P-CON
POWER
SW.
Q401
D2061
+8V
Q902
IC902
SERVO DRIVER
SPINDLE MOTOR
SLED MOTOR
+8V
CD SW.
M
M
+
+
-
-

2-14
5.1.2 Block diagram for RC-EZ31
R/P HEAD
IC201
FM ANT. FM RF FM OSC.
BPF
AM ANT
IC101
FM F/E, IF/DET/MPX
AM RF/IF/DET.
L SPEAKER
R SPEAKER
TU-5V
REG.
IC301
POWER AMP.
AM OSC
VOL
IC501
SIGNAL SELECT SW.
DISC
LCD
M+
M- CASS MOTOR
RECTIFIER
AC INPUT
TRANSFORMER
DC SUP
SW
Q401
TU SW.
TA SW.
KEY
IC902
MCU
IC901
DSP
PICKUP
M
M
SPINDLE
MOTOR
SLED
MOTOR
CD DOOR
LEAF SW
IC903
MOTOR/ACTUATOR
DRIVER
Q902 CD SW.

2-15
5.2 STANDARD SCHEMATIC DIAGRAMS for RC-EZ35
5.2.1 Primary and Amplifier section
Q412
CN906
9014
CN710
TO CD DOOR LEAF SW.
TO MCU BOARD CN701
TO TUNER BOARD CN101
TO CD BOARD CN901
TO P / R BOARD CN202
TO CN801
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
ZD404
5V6
R419
150
+
R410
330
+
C405
330U
R409
22
R405
10K
Q404
9014
R404
10K
R406
470 1 / 4W
+
C402
22U
R408
10K
C408
100U
+
R417
3.3K
Q403
8050
R421
10K
C406
47U
D402
IN4148
ZD402
6V2
Q411
8050
R413
R411
Q406
10K
10K
9014 R412
470
CN105
4
3
2
1
R509
C523
4.7K
153M
R510
C525
4.7K
153M
1
2
3
4
5
CN905
R523
15K
C534
OPEN
R522
2.7K
CN205
R519
3.3K
GND
10
9
8
7
6
5
4
3
2
1
GND
CN206
R418
10K
CN801
TO AUDIO BOARD CN206
TO CONTROL BOARD CN707
1
2
CN711
R805
10
SW801- A
SW719
Rese t
C533
OPEN
R520
15K
R521
2.7K
R517
15K
C529
R507
C518
15K
100P
100P
R514
3.3K
R513
Q503
4. 7K
9014
9014
Q50 2
R515
1.2K
R518
4. 7K
D405
IN4148
Q407
8550
R425
SHORT
D404
IN4148
Q415
9014
R508
68K
C520
500P
C521
1U
1U
C507
+
C508
1U
+
15 14
13
12
NC
R1
R2
R3
R4
11
10 98
RSEL0
RIN
RTRE
RBASS1
RBASS2
765432
ROUT
TEST
VSS
CE
DI
1
16
NC
17 18 19 20
L1
L2
L3
L4
LESL0
LIN
LTR E LBASS1
21
22 23 24
25
26
27
28 29
LBASS2
LOUT
NC
VREF
VDD
CL
30
IC501
LC75342
+
C506
1U
+
+
C505
C504
C503
1U
272M
0.1M
C502
C501
0.1M
4.7U
+
R503 R304
3.9K
18K
R414
470
Q408
Q409
9014
8550
Q410
R415
10K
9014
R407
47K
R416
5.6
1 / 4W
ZD403
3V
R427
1K
C532
102
C516 C515
C517
+
+
+
1U
1U
1U
1U
C527
C514
C513
272M
1U
+
R512
1.2K
R516
22K
Q501
9014
+
C528
22U
R422
2.2K
Q414
9014
C526
500P
R424
SHORT
R426
1K
R511
68K
C512
C511
0.1M
0.1M
R506
3.9K
R305
18K
C509
4.7U
+
22U
+
+
C510
C519
100U
C530
102
R504
15K
R428
C412
68K
47U
+
Q413
9014
D403
IN4148
R423
10K
R403
C411
10K
10UF
+
R420
5.6K
R317
4.7K
100
R505
102
C531
R501
15K
R502
15K
+
C409
100U
D406
IN4148
R302
C301
Q301
1K
1936
+
3.3U
R303
1K
Q302
1936
R315
47K
D302
IN4148
Q405
A928A
R301
8.2K
C302
C313
100U
1U
+
+
+
C306
100U
+
+
C307
100U 1000U
C312
R307
120
7
8
9
13
10 11
12
C310
R309
0.1M
2.2
IC301
UTC8227
C304
102
102
C305
6 5
4
14
3
R306
120
+
2
1
C308
C311
100U
1000U
+
C314
C303
1U
100U
+
+
+
C316
470U / 25V
C309
0.1M
R308
2.2
R316
4.7K
+
C407
1000U / 25V
R314
10K
Q304
8550
R312
10K
D301
IN4148
+
Q303
9014
C315
470U / 25V
R313
33K
CN301
CW301
44
33
22
11
L SPEAKER
R SPEAKER
R310
R311
L301
L303
100
100
15UH
15UH
15UH
L302
JK301
HEADPHONES JACK
CN401
6
5
4
3
2
1
6
5
4
3
2
1
CN1101
11
22
33
+
CW1102
C410
220U / 25V
-
+
MOTOR
CASSETTE DECK
M
CN1102
C403
470U / 16V
+
ZD401
8V2
C401
223
D401
IN4148
+
C404
220U / 16V
R401
330
1 / 4W
Q401
D2061
Q402
9014
R402
B+
22K
DC+
D1104
IN4001
C1104
403
C1103
403
IN4001
D1103 FX1101
2A
125V
AC-IN1
AC-IN2
C1105
6800U / 25V
+
C1102
403
D1102
IN4001
C1101
D1101
IN4001
403
BATT
BT -
POWER / TRANSFORMER
ACINPUT

2-16
5.2.2 Front section
CN702
5
4
3
2
1
CN701
TO CD BOARD CN903
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TO AUDIO BOARD CN710
R722
27K
R726
1K
R727
1K
1K
R728
R701
100
R710
R702
100
100
100P
102
C701
C716
C724
680P
R744
100
D704
L702
IN4148
100UH
R731
R732
R745
47K
47K
47K
47K
47K
47K
R721
R752
R735
B03
R725
10K
R734
3.3K
D703
IN4148
LED701
Standby
R733
10K
LED702
Amber Back Light
B02 B04
B01
R754
R753
47K
47K
COM[01:04]
COM01
COM02
COM03
COM04
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
COM1
COM2
COM3
COM4
P_ PCON(0 ,CM)
VSS3
VDD3
AMUTE(0,CM)
P_ TU( 0 ,Nch)
P_ CD( 0 ,Nch)
IF_ IN(0 ,Nch)
TR_ M- ( 0 ,Nch)
TR_ M+ ( 0 ,Nch)
CD_ RST( 0 ,Nch)
CD_ CE( 0 ,Nch)
TUEV_ CE( 0 ,Nch)
CD_ CMD(0 ,CM)
CD_ DATA ( I,-)
CD_ CLK
IF_ CLK( 0 ,CM) / TX
R729
R730
1K
1K
60
59 58 57
56
55 54
53 52
51 50 49 48 47 46 45 44 43 42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
S30
S29
S28 S27
S26
S25
S24
S23 S22
S21
S20
S19
S18 S17 S16
JOG+(I,ex-PU)
JOG-(I,ex-PU)
SYN_REC(I,ex-PU)
S32
S31
S30
S29
S28
S27
S26 S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
VSS2
VDD2
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
ZD701
3.9V
IF_OUT
(I, -) / RX TUEV_DI(0,CM)
TUEV_D0( I, -)
TUEV_CL(0,CM)
/RES(I,ex- PU)
XT1(I)
XT2( 0)
VSS1
CF1(I)
CF2( 0)
VDD1
OPT_CT (I, - )
IF_ RST(0,Nch)
OPT_SYS1(I, - )
KEY0( I,- ) KEY2( I,- )
SW_CD( I,-)
V_CHK( I,-)
IF_REQ( I,-)
KEY1( I,- )
IR(I,-)
ST(I,-)
V_GND(0,CM)
IC701
LC877C64C-57K1
C723
C722
C721
680P
680P
680P
100
100
100
R741
R742
R743
X701
32.768KHz
C709
15P
15P
C708
C711
22P
C710
22P
C702
102
R723
4.7M
R724
680K
X702
8MHz
R706
R707
68K
R708
R711
R750
4.7K
4.7K
4.7K
6.8K
R705
56K
102
C704
C707
102
R751
R736
5.6K
390
R715 10K
D702
IN4148
R717
100K
Q702
9014
-
+
2.2UF
C714
R714
47K
Q703
9015
Q704
9015
R720 1K
D705
IN4148
L701
100UH
C715
102
C720
102
R716
47K
C703
104
D701
IN4148
R718
10K
R719
100K
C713
2200UF
+
-
R712
3.3K
R713
47K
C706
102
C705
102
R738
820
R737
3.3K
R709R709
390
R703
3.9K
R791 R792
R793
4.7K 6.8K 8.2K
10K 12K
R794 R795
SW701
SW702 SW703
SW708 SW704
SW705
PLAY RANDOM
DISPLAY
FOLDER+ FOLDER-
STOP
F.B .
F.F.
SW707
SW706
Q701
9015
R704
47K
JP1
US1
US2
EU1
EU2
EU3
AS
C718
220UF
+
-
C719
104
R739
R740
R746
3K
1.2K
2K
C717
680P
R749
100
B05
B06
CN704
1
22
1
C712
104
REM701
COM04
COM03
COM02
COM01
34
33
32
31
30
29
28
27
26
25
S30
S29
S28
S27
S26
S25
S24
S23 S22
24
23
22
21
20
19
18
17 16
S21
S20
S19 S18
S17
S16
S15
S14
S13
S12
15
14
13
12
11
10
9
8
7
6
S11
S10
S9
S8 S7
S6
S5
S4
S3
S2
5
4
3
2
1
S1
S[1: 34]
LCD701
MP3MP3
USB
WMA
TRACK
FOLDER
STEREO
REPEAT
HBS
ALL
ROCK
JAZZ
POP
RANDOM
PROGRAM
CLASSIC
INTRO
SLEEP
kHz
MHz
B[ 01:06]
B01
B02
B03
B04
B05
B06
CN703
1
2
3
4
5
6
7
8
9
10
10
9
8
7
6
5
4
3
2
1
CN706
B01
B02
B03
B04
B05
B06
B[01:06]
CN708
TO TUNER BOARD CN102
5
4
3 2
1
B01
B02 B03
B04 B05 B06
2
1
CN707
TO BEAT CUT BOARD CN711
R785 R783
2.2K 3.9K
SW714
PRESER UP
REPEAT
SW713
FM MODE
SW716
TUNER
SW717
TAP E
SW718 SW715
EQ
PROGR
/CLK
R786 R784
390
1.2K
R787
4.7K
R782
R781
3.3K
1.2K
R780
4.7K
SW709
STANDBY
SW710
VOL UP
SW711
VOL DOWN
SW712
HBS
CN709
R747
R748
1.2K
470

2-17
5.2.3 CD servo section
CN902
PICKUP
VC
VCC
E
1
2
3
4
5
6
D
A
B
C
F
7
8
9
GND
LD
10
11
12
VR
PD
F+
T-
T+
13
14
15
16
F-
R949
100
R946
33
SW901
Limit Switch
MOTOR1
SLED
M
+
+
M
SPINDLE
MOTOR2
C945
R947
104
100K
C909
104
+
-
C910
100UF
Q901
2SA608NF
C911
103
R904
470
C912
104
R948
100
L902
22uH
C944
104
C943
33UF
+
-
3.3
C906
102
+
-
C946
100UF
C940
473
C939
104
R901
330
C902
103
C901
472
C903 683
C904
473
C905
103
-
+
C907
10UF
C908
103
C947
104
C913
100UF
R925
8.2K
R902
8.2K
R903
1
2
3
45
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VCC2
VREF
VIN4
VG4
V04+
V04-
NC
GND
NC
V03-
V03+
VIN3G
VIN3
CD
RESET
VCC1
VIN1
VG1
V01+
V01-
NC
GND
NC
V02-
V02+
VG2
VIN2
MUTE
REG_G
REG_B
28 27 26 25 24 23 22 30
21
20
19
18
17
16
15
C950
2.2UF
-
+
IC902
LA6548NH
1234567
29
89
10
11 12
13
14
R905
10K
+
-
C914
104
R941
150
R940
150
R937
220
80
79
78 77
76
75
74
73
72
71 70
69 68
67
66
65
64
63
62
61
R939
33
R938
47
+
-
C920
100UF
C930
100UF
-
+
R935
22K
R933
3.3K
+
-
C936
C935
+
-
4.7UF
4.7UF
C932
104
R942
100
100
R943
C933
C934
330UF
104
+
-
X901
16.9344MHz
C931
104
R936
150
C928
104
C929
1UF
R934
22
+
-
C926
104
C927
104
EFMIN
RFOUT
LPF
PHLPF
AIN
CIN
BIN
DIN
FEC
RFMON
VEEF
JITTC
EIN
FIN
TEC
TE
TEIN
LDD
LDS
AVS S
AVD D
FD0
TD0
SLD0
SPD0
VVSS1
PDOUT1
PDOUT0
PCKIST
VVDD1
DMUTEB
PUIN
DEFECT
FSEQ
C2F
DVDD
DVSS
DVDD1.8
VVDD3
VVSS3
LRSY
DATACK
DATA
TEST1
STDATA
STCK
STREQ
TEST0
CONT0
CONT1
CONT2
INTB1
INTB0
RESB
DO
DI
CL
CE
DVSS
DVDD
SLC0
AVD D
RCH0
LRVSS
LRVDD
LCH0
XVDD
XIN
XOUT
XVSS
AMUTEB
DOUT
DVDD
DVSS
DVDD1.8
VVSS2
VPDOUT2
VCOC2
VPREF2
VVDD2
60
59
58
5756
5554
53
52
51
50
49
48
47
4645
44
43
42
41
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
IC901
LC78690W
R932
R930
R928
0
0
0
R924
10K
R950
10K
C938 C937
102 102
R907
15K
C916
1UF
R908
6.8K
R909
680
R911
R912
680
R910
2.2M
C915
473
C917 104
-
+
104
C918
6.8K
C949
C948
104
100UF
-
+
-
+
C921
100UF
C919
104
C922
104
L903
100uH
R906
12K
R926
150
Q902
B764
C942
C941
104
470UF
L901
26UH
-
+
CN901
1
2
3
4
5
TO AUDIO BOARD CN905 TO MCU BOARD CN702
CN903
1
2
3
4
5
R922
27K
C925
104
R920
100K
C924
68P
R918
Open
R916
5.6K
C923
68P
R921
1K
1K
R917
R915
2.2K
R913
1K
R914
27K
R919
1K
-
-

2-18
5.2.4 Cassette mechanism section
24 8 - STDS13- 108
BIAS =80 KHz
L / CH.
L / CH
GND
R / CH
AC / B
R / CH.
CW201
1
2
3
4
1
2
3
4
CN201
L / CH
GND
R / CH
AC / B
SW201 - 1 - A
SW201 - D - A
456789
C216
7P
C201
222M
C202
102M
C227
7P
R201
47K
R204
8K2
+
IC201
BA3308
C259
100P
C205
+
10U
R202
470K
Q201
C258
100P
R203
47K
1
2
3
4 5
6
7
8 9
C209
222M
SW201-1 -B
10
11
12
13
R209
SW201- 5 -A
14
8K2
C211
222M
15
R229
3K9
R225
3K9
R211
R210
5K6
27
C203
100U
+
C208
222M
C204
4U7
R208
6k8
C210
333M
9014
C217
7P
R216
22K
C207
+
4U7
R206
6K8
C212
102M
C213
333M
R205
5K6
R207
27
C215
+
1000U
C214
104
R219
C206
100U
+
100
C226
7P
SW201- 6- A
123
C801
500P
Q801
15K
R804
9014
C219
103
T801
3630
C803 332M
C225
223
C260
223
+
220U
C805
10K
R801
100
C804
C806
223M
Q802
103M
R803
8050
R802
5.6
R214
1.5K
R220
10K R215
1.5K
C220
+
10U
R221
R222
10K
10k
16 17
18
SW201- 5 - B
Q203 Q202
9014 9014
MUTE
Beat Cut
Mic Rec.
Rec.R In
R Out
GND
+8V
Rec. L In
L Out
SYNC
TO MAIN BD.CN305
CN202
10
9
8
7
6
5
4
3
2
1

2-19
5.2.5 Tuner section
FM-ANT
BPF 87~108MHz
CF101
GND
C159
15p
D102
D101
R102
IN4148
IN4148
1K
C101
18p
L100
4.5T
3.5MM
C145
C157
102
104
R126
100K
100K
R125
CT101
10P
L101
3.5T 4.5MM
C103
6p
C135
102
SVC201
VD101
VD102
SVC201
C133
102
L102
2T5
5MM
C131
20P
R100
820
C130
222
C138
104
R128
10
C126
104
C122
102
R127
220
R124
220K
Q107
9018H
R120
1K2
C156
103
C134
6p
C94
102
C96
12P
C121
0.22U
+
-
+
-
R119
3K3
C120
0.22U
C118
C155
8p
3U3
+
-
CF104
R118
10
CDA10.7MC1- A
TP16(H)
R143
10K
C164
104
TP8 (E)
GND
CT102
10P
AM COIL ANT
65 : 25
VD103
SVC348
R101
C104
47K
10U
+
-
C105
223
56p
C132
18p
C107
C108
390P(P)
T101
612R
C137
102
R117
10
C113
100U
C163
104
+
-
R122 10
C139
30p
IC101
LA1823
24
23
22
21
20
19
18 17 16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
FMRF1
GND2
FMRF2
VCC2
FMOSC
DETOUT
AMRF
REG
AMOSC
VCC1
FMIFOUT GND1
MPXIN
IFBUFF
ST
ROUT LOUT
AMIFOUT
FMIFIN
AMIFIN
AGG
FM / AM
ST / MONO
DET
R121
10
C129
4U7
-
+
CF102
10. 7MA5 - A
R104
27K
R111
150K
T103
2070
CF105
450KHz
C160
104
C114
223
R150
10K
C102
*
C117
4U7
R107
100K
R108
33K
+
-
C93
102
R135
18K
R134
18K
C124
103
C123
103
C127
C128
104
104
TP11(R)
R109
27K
TP12(L)
Q108
2SC3330U
FMVT: L=1.8+ - / 0.1V
AMVT: L=1.4+ - / 0.1V
L=1.0+ - / 0.1V
H=7. 2+ - / 0. 5V(ALL)
H=7. 2+ - / 0. 5V(XE / UK)
H=7. 2+ - / 0. 5V(CA / KR / AU)
1
2
3
4
CN101
TU- R
GND
TU- L
+8V
TO AUDIO BOARD CN105
C92
102
C151
223
R144 10K
C150
104
C148
223
C91
102
+
-
C152
100U
C100
223
R142
2K7
C158
104
R146
2K2
C153
20P
7.2MHz
X101
C154
20P
GND GND
R140
R141
2K2
4K7
R145
220
C147
1U
+
-
R139
2K7
R153
1M
Q110
9018F
R152
330
330
R151
C162
223
R154
22
CF103
10.7MA5 - A
100UH
L105
C125
220U 104
C165
+
-
ZD101
5V6
C115
103
+
-
GND
Q109
8050
R106
680
C116
R147
47
100U
ST
D0
CE
ST
DI
CL
CN102
TO CONTROL BOARD CN708
C99
C97
C95
103
100P
100P
GND
R132 10K
R110
680
D104
IN4148
IC102
LC72131
4.7k
R103
C146
103
R138
2K2
C143
100P
100P
C142
R123
100K
100P
C140
C141
47P
C144
47U
+
-
C149
104
20
19
18 17
16
15
14
13 12
11
1
2
3
4
5
6
7
8
9
10
XIN
XOUT
CE
DI
CL
D0
B01
VSS
AOUT
AIN
PD
VDD
B02
B03
B04
I01
FMIN
AMIN
NC
IF
R129
1K
R130
R131
1K
1K

2-20
5.3 STANDARD SCHEMATIC DIAGRAMS for RC-EZ31
5.3.1 Primary and Amplifier section
1. DISCONNECT POWER CORD BEFORE SERVING
4. SUBJECT TO CHANGE WITHOUT NOTICE
3. COMPONENTS MARKED WITH HAVE CRITICAL
TROUBLE SHOOTING
TYPE NEMBER.
CHARACTERISTICS.ONLY REPLACE WITH THE COMPONENT OF THE SAME
2. RECOMMEND THE UNIT BE OPERATED BY DC 12V VOLTS DURING
B/C
Rch
Lch
GND
+8V
CN201
(TO:CN101)
5
4
3
2
1
R322
R324R323R321
R326
R311
R327
10K
15K
Q301
D1936
7.5K
2.2K
2.2K 67
8 9
5 4 3 2 1
1413
10 11 12
4.7K
4.7K
R305
R301
R303
7.5K
R306
R320
R304
R302
152M
C303
C307
C319
R307 180K
4.7K
R309
154M
C309
C301
C325
C324 C302
C315
220UF/25V
R315
1K
C313
R313
R314
120
120
L302
L301
L303 10T
10T
10T
JK301 HEAD
SP301
SP302
+
-
+
-
+
-
CN332
C1
C2
C402
C4C3 102P
102P
102P102P
470uF/16V
IN4001
D302
8550
Q306
100uF 100uF
1UF
1UF
1UF
1UF
1UF
IC301 UTC8227
VR301-B
VR301-A
50KA
50KA
102M
473M473M
C312C322C321
5.6K
5.6K
15K
10K
102PF
C369
R369
R222
1K
10K
CN307 TO Rec BD CN202
10
9
8
7
6
5
4
3
2
1
B/C
TA
R/R
R/L
R/O
L/O
SYNC
GND
+8V
CN307
Q302
Q303
D1936
C311
102M
R308
R310
180K
C305
C304
C316
C306
C308
C329
47uF
100uF
100UF/10V
4.7K
C320
C314
C330
10K
R328
R329
2200UF/25V
C310
154M
152M
100uF/16V
9014C
Q305
470uF/16V
470uF/25V
220U/25V
MOTOR
LEAF-SW
CN1102
33K
D300
IN4148
IN4148
R330
R300
R316
10K
10K
D308
D309
100K
5.6K
IN4148
IN4148
IN4148
IN4001
IN4148
D311
D314
D310
D301
5K6
5K6
5K6
8.2K
8.2K
R371
R370
R312
R332
C318
C317
C323
100UF
100UF
47UF
120K
120K
R379
500P
500P
C373
C374
1.2K
1.2K
R381
47UF
47UF
C326
C371
DZ301
5.1V
330
R372
Q371
Q391
Q392
S8050
TO CN204
CN309
C327
0.01
4K7
4K7
R378
R398
9014
9014C
C376
10K
3.2k
R375
R399
R331
R333
R328
R380
R396
10K
1k
1k
SW301-A
SW301-B
CD
TAP E
TUN
TO CN303
CN1101
9015C R319 27k
LFSW
DC+
+12V
+8V
GND
GND
C1105
3300UF / 25V
DC
AC
C1104
C1101
D1102
C1102
D1104
D1101
D1103
0.04
0.04
0.04
0.04
IN4001
IN4001
IN4001
IN4148
IN4001
CN1101
T1101
AC LINE
REMARK *
JP VERSION :F110 1 2A125V
XE VERSION :F1101 T2AL250V
F1101
C1103
R401
330 1/2W
Q401
2SD2061
D401
C404
C401
0.022
47UF
8.2V
DZ401
C403
2200UF / 25V
LFSW
DC+
+12V
+8V
GND
GND
CD
TAP E
TUN
R505
R504
R506
R503
10K
10K 10K
10K
IN4148
IN4148
1UF
1UF 1UF
1UF
1UF
1UF
1UF
1UF
1UF 1UF
1K
C509
C504 C505
C508
R501
C502 C395
Q369
Q329
9014C
9014C
4K7
4K7
R368
R367
C377
47UF
47UF
C393
C378
C394
R394
R391
R389 10K
3.3K
100UF
R373
C372 0.1UF
100
R374
CN305
SYNC
SYNC
LED-
LED+
CN906
CD-L
CD-R
MUTE
AGND
CDGND
CD+8V
3.3U
3.3U
C392 18K
18K
R392
R393
C391
103M
103M
3.9K
3.9K
C501 100U / 10V
R502 2K2
16
1VDD
X2 X1
X
X0 X3
A B
Y0 Y2 Y Y3 Y1 INH VEE VSS
2 3 4 5 6 7 8
15 14 13 12 11 10 9
IC501 TC4052
C507
C506
C503 C510
D306
D307
CN303
TO CN1101
BATT 12V
D305
IN4148
R395 2.2K