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SERVICE MANUAL
CD STEREO SYSTEM
XR-EM50
XR-EM51
S/M Code No. 09-022-453-8R1
K(S)
EZ(S)
BASIC TAPE MECHANISM : CMAL1Z223A
BASIC CD MECHANISM : 3ZG-3 E2NC
CX­LEM50
XR­EM50
RC­CAS06
SYSTEM
CD
CASSEIVER
REMOTE
CONTROLLER
SPEAKER
SX­LEM50
CX­LEM51
XR­EM51


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­ 2 ­
TABLE OF CONTENTS
SPECIFICATIONS ............................................................................................................................................................... 3
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ........................................................................ 4
ELECTRICAL PARTS LIST (CX ­ LEM50 / 51) ......................................................................................................... 5 ~ 14
ELECTRICAL PARTS LIST (CZA ­ 3) ..................................................................................................................... 15 ~ 17
ELECTRICAL PARTS LIST (3ZG ­ 3) ............................................................................................................................. 18
ELECTRICAL PARTS LIST (3ZG ­ 2) ............................................................................................................................. 19
CHIP RESISTOR PART CODE ....................................................................................................................................... 20
TRANSISTOR ILLUSTRATION ......................................................................................................................................... 20
WIRING ­ 1 (MAIN) <1 / 2> .............................................................................................................................................. 21
WIRING ­ 1 (MAIN) <2 / 2> .............................................................................................................................................. 22
SCHEMATIC DIAGRAM ­ 1 (MAIN / KEY (1 / 2)) ........................................................................................................... 23
WIRING ­ 2 (FRONT) <1 / 2> .......................................................................................................................................... 24
WIRING ­ 2 (FRONT) <2 / 2> .......................................................................................................................................... 25
SCHEMATIC DIAGRAM ­ 2 (FRONT / DECK) ................................................................................................................ 26
WIRING ­ 3 (CD) <1 / 2> ................................................................................................................................................. 27
WIRING ­ 3 (CD) <2 / 2> ................................................................................................................................................. 28
SCHEMATIC DIAGRAM ­ 3 (CD / DRIVE / LOAD) .......................................................................................................... 29
WIRING ­ 4 (TUNER) ........................................................................................................................................................ 30
SCHEMATIC DIAGRAM ­ 4 (TUNER) ............................................................................................................................. 31
WIRING ­ 5 (PT) ............................................................................................................................................................... 32
SCHEMATIC DIAGRAM ­ 5 (PT) ..................................................................................................................................... 33
WIRING ­ 6 (KEY) <1 / 2> ............................................................................................................................................... 34
WIRING ­ 6 (KEY) <2 / 2> ............................................................................................................................................... 35
SCHEMATIC DIAGRAM ­ 6 (KEY (2 / 2)) ....................................................................................................................... 36
WIRING ­ 7 (DECK / DRIVE / LOAD) ............................................................................................................................... 37
IC BLOCK DIAGRAM ............................................................................................................................................... 38 ~ 39
FL (11 ­ BT ­ 193GNK) GRID ASSIGNMENT AND ANODE CONNECTION ................................................................ 40
IC DESCRIPTION ..................................................................................................................................................... 41 ~ 45
VOLTAGE CHART .................................................................................................................................................... 46 ~ 48
ADJUSTMENT ........................................................................................................................................................... 49 ~ 56
CD TEST MODE .............................................................................................................................................................. 57
MECHANICAL EXPLODED VIEW ................................................................................................................................... 58
MECHANICAL PARTS LIST ............................................................................................................................................. 59
COLOR NAME TABLE ..................................................................................................................................................... 60
TAPE MECHANISM EXPLODED VIEW .......................................................................................................................... 61
TAPE MECHANISM PARTS LIST ................................................................................................................................... 62
CD MECHANISM EXPLODED VIEW 1 / 2 <3ZG ­ 3> .................................................................................................. 63
CD MECHANISM PARTS LIST 1 / 2 (3ZG ­ 3) ............................................................................................................. 64
CD MECHANISM EXPLODED VIEW 2 / 2 <3ZG ­ 2> .................................................................................................. 65
CD MECHANISM PARTS LIST 2 / 2 (3ZG ­ 2) ............................................................................................................. 66
GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) ............................................................ 67
SPEAKER PARTS LIST (SX ­ LEM50) ........................................................................................................................... 68
ACCESSORIES PARTS LIST (CX ­ LEM50 / 51) ........................................................................................................... 69
OTHER PARTS LIST (CX ­ LEM50 / 51) ........................................................................................................................ 70
OTHER PARTS LIST (CZA ­ 3) ...................................................................................................................................... 71
OTHER PARTS LIST (3ZG ­ 3) ...................................................................................................................................... 72


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­ 3 ­
SPECIFICATIONS
· Design and specifications are subject to change without notice.
TUNER
FM tuning range
87.5 MHz to 108 MHz
FM usable sensitivity (IHF)
16.8 dBf
FM antenna terminal
75 ohms (unbalanced)
MW tuning range
531 kHz to 1602 kHz (9 kHz step)
530 kHz to 1710 kHz (10 kHz step)
MW usable sensitivity
350 µV/m
LW tuning range
144 kHz to 290 kHz
LW usable sensitivity
1400 µV/m
MW/LW antenna
Loop antenna
AMPLIFIER
Power output
Rated: 16 W + 16 W (6 ohms, T.H.D.
1 %, 1 kHz/DIN 45500)
Reference: 20 W + 20 W (6 ohms,
T.H.D. 10 %, 1 kHz/DIN 45324)
DIN MUSIC POWER (EZ only)
45 W + 45 W (EZ only)
Input
AUX IN: 500 mV
Outputs
SPEAKERS: 6 ohms or more
PHONES: 32 ohms or more
CASSETTE DECK
Track format
4 tracks, 2 channels stereo
Frequency response
50 Hz ­ 10000 Hz
Recording system
AC bias
Heads
Recording/playback x 1, erase x 1
CD PLAYER
Laser
Semiconductor laser (
= 780 nm)
D/A converter
1 bit dual
Signal-to-noise ratio
80 dB (1 kHz, 0 dB)
Wow and flutter
Unmeasurable
GENERAL
Power requirements
230 V AC, 50 Hz
Power consumption
60 W
Power consumption in standby mode
with ECO mode on: 0.7 W
with ECO mode off: 10.0 W
Dimensions (W x H x D)
190 x 250 x 271.4 mm
Weight
3.5 kg
SPEAKER SYSTEM SX-LEM50
Speakers system
2 way, bass reflex (magnetic shielded)
Speaker units
Woofer: 100 mm cone
Tweeter: 60 mm cone
Impedance
6 ohms
Dimensions (W x H x D)
155 x 250 x 206 mm
Weight
2.2 kg


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This set employs laser. Therefore, be sure to follow carefully
the instructions below when servicing.
WARNING!!
WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMISSION.
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 30cm FROM THE SURFACE OF THE OBJECTIVE
LENS ON THE OPTICAL PICK-UP BLOCK.
Caution: Invisible laser radiation when
open and interlocks defeated avoid
exposure to beam.
s
Advarsel: Usynlig laserståling ved åbning,
når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa
mainitulla
tavalla
saataa
altistaa
käyt-täjän
turvallisuusluokan 1 ylittävälle näkymättömälle
lasersäteilylle.
VARNING!
Om apparaten används på annat sätt än vad som
specificeras i denna bruksanvising, kan användaren
utsättas för osynling laserstrålning, som överskrider
gränsen för laserklass 1.
CLASS 1
LASER PRODUCT
KLASSE 1
LASER PRODUKT
LUOKAN 1
LASER LAITE
KLASS 1
LASER APPARAT
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herin may result in
hazardous radiation exposure.
ATTENTION
L'utillisation de commandes, réglages ou procédures
autres que ceux spécifiés peut entraîner une dangereuse
exposition aux radiations.
ADVARSEL
Usynlig laserståling ved åbning, når sikkerhedsafbrydereer
ude af funktion. Undgå udsættelse for stråling.
This Compact Disc player is classified as a CLASS 1
LASER product.
The CLASS 1 LASER PRODUCT label is located on the
rear exterior.
Precaution to replace Optical block
(KSS-213F)
Body or clothes electrostatic potential could
ruin laser diode in the optical block. Be sure
ground body and workbench, and use care the
clothes do not touch the diode.
1) After the connection, remove solder shown in
right figure.
PICK-UP ASSY PWB
­ 4 ­
Solder


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!
= ! SAFETY PARTS
C
= Components marked
All components used on this model at the production line are shown in this service manual.
However, please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
UNIT-NAME
! C REF-NO PARTS-NO
PARTS-NAME
SUFFIX&MODEL
­ 5 ­
ELECTRICAL PARTS LIST (CX ­ LEM50 / 51)
CX-LEM50
CX-LEM51
KSC
EZSC
CD
O C
001A 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
002A 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
003A 87-012-274-08
CHIP CAP,U 1000P-50B
a
b
CD
O C
0043 87-012-274-08
C-CAP, U 1000P-50B
a
b
CD
O C
0044 87-012-274-08
C-CAP, U 1000P-50B
a
b
CD
O C
004A 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
005A 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0101 87-010-194-08
C-CAP,U0.047UF 25V K X7R CER
a
b
CD
O C
0104 87-012-282-08
C-CAP, U 4700P-50
a
b
CD
O C
0105 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0107 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0108 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0109 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0110 87-010-405-08
CAP, ELECT 10-50V
a
b
CD
O C
0111 87-010-401-08
CAP, ELECT 1-50V
a
b
CD
O C
0113 87-012-284-08
C-CAP,U 6800P-50V
a
b
CD
O C
0114 87-012-188-08
C-CAP,U 47P-50 CH
a
b
CD
O C
0115 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0116 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0117 87-010-263-08
CAP, ELECT 100-10V
a
b
CX-LEM50
CX-LEM51
KSC
EZSC
CD
O C
0118 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0119 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0120 87-012-156-08
C-CAP,U 220P-50V K X7R
a
b
CD
O C
0121 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0122 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0123 87-012-169-08
C-CAP,U 7P-50 CH
a
b
CD
O C
0124 87-012-172-08
CAPACITOR CHIP U 10P CH
a
b
CD
O C
0126 87-010-403-08
CAP, ELECT 3.3-50V
a
b
CD
O C
0127 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0128 87-010-194-08
C-CAP,U 0.047UF 25V K X7R CER
a
b
CD
O C
0129 87-010-403-08
CAP, ELECT 3.3-50V
a
b
CD
O C
0130 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0131 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0132 87-010-263-08
CAP, ELECT 100-10V
a
b
CD
O C
0133 87-010-405-08
CAP, ELECT 10-50V
a
b
CD
O C
0134 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0135 87-010-248-08
CAP, E 220-10M 11L SME
a
b
CD
O C
0136 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0138 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0139 87-010-401-08
CAP, ELECT 1-50V
a
b
CX-LEM50
CX-LEM51
KSC
EZSC
CD
O C
0203 87-010-236-08
CAP, ELECT 1000-10M SME
a
b
CD
O C
0204 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0205 87-010-402-08
CAP, ELECT 2.2-50V
a
b
CD
O C
0206 87-010-112-08
CAP, ELECT 100-16V
a
b
CD
O C
0207 87-012-286-08
C-CAP, U 0.01-25
a
b
CD
O C
0212 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0213 87-010-112-08
CAP, ELECT 100-16V
a
b
CD
O C
0306 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
0310 87-012-279-08
CHIP CAP,U 2700P-50B
a
b
CD
O C
0401 87-012-195-08
C-CAP,U 100P-50CH
a
b
CD
O C
0402 87-012-195-08
C-CAP,U 100P-50CH
a
b
CD
O C
0403 87-012-195-08
C-CAP,U 100P-50CH
a
b
CD
O C
0404 87-012-195-08
C-CAP,U 100P-50CH
a
b
CD
O C
0405 87-012-195-08
C-CAP,U 100P-50CH
a
b
CD
O C
0411 87-010-112-08
CAP, ELECT 100-16V
a
b
CD
O C
0412 87-012-286-08
C-CAP, U 0.01-25
a
b
CD
O C
0603 87-012-180-08
C-CAP,U 22P-50 CH
a
b
CD
O C
102A 87-010-759-08
C-CAP,U, 0.1-25F
a
b
CD
O C
103A 87-012-188-08
C-CAP,U 47P-50CH
a
b
CD
O C
106A 87-010-263-08
CAP, ELECT 100-10V
a
b
CX-LEM50
CX-LEM51
KSC
EZSC
CD
O C
304A 87-012-274-08
CHIP CAP,U 1000P-50B
a
b
CD
O C
307A 87-010-391-08
CAP,E 10-35 SME
a
b
CD
O C
308A 87-010-391-08
CAP,E 10-35 SME
a
b
CD
O C
309A 87-012-279-08
CHIP CAP,U 2700P-50B
a
b
CD
O CN 0001 87-A60-424-01
CONN,16P V TOC-B
a
b
CD
O CN 0201 87-099-199-01
CONN,6P H BLK 6216
a
b
CD
O CN 301A 87-A60-081-01
CONN, 06P H 9604
a
b
CD
O CN 401A 87-A60-080-01
CONN,07P H 9604S-07F
a
b
CD
O CN 402
86-NFZ-675-01
CONN,05P H 6216
a
b
CD
S D
0102 87-A40-747-08
ZENER,UZ5.1BSB
a
b
CD
S D
101A 87-A40-742-08
ZENER,UZ4.3BSA
a
b
CD
O FFC0001 88-CL4-704-01
FF-CABLE,16P 1.0 150MM CD-PIC
a
b
CD
O FFC0201 88-906-101-11
FF-CABLE,6P 1.25
a
b
CD
O FFC0402 88-905-231-11
FF-CABLE 5P 1.25
a
b
CD
S IC 0010 87-001-982-01
IC,TA7291S
a
b
CD
S IC 0101 87-A22-242-03
C-IC,LC78646E
a
b
CD
S IC 0202 87-A22-251-04
C-IC,BA5826FP
a
b
CD
X JW 0126 88-121-101-08
RES,100-1/8W J
a
b
CD
O JW 0127 S1-8A8-435-56
F-BEAD 843556 TB36
a
b
CD
X JW 0128 88-121-101-08
RES,100-1/8W J
a
b