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BASIC TAPE MECHANISM : 2ZM-1R7
BASIC MD MECHANISM : 7ZG-9B2
BASIC CD MECHANISM : 3ZG-3E2
MD/CD STEREO
RADIO CASSETTE RECORDER
CSD-MD50
S/M Code No. 09-994-328-4N2
EZ
SERVICE MANUAL
DA
TA
MODEL CODE : 86HR8-0117(B)
86HR8-1111(W)
86HR8-4444(L)
86HR8-8888(ST)


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2
TABLE OF CONTENTS
SPECIFICATIONS .................................................................................................................................. 3
ACCESSORIES/PACKAGE LIST ........................................................................................................... 3
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ................................................ 4
Precaution to replace Optical block......................................................................................................... 5
DISASSEMBLY INSTRUCTIONS ...................................................................................................... 6-10
ELECTRICAL MAIN PARTS LIST ................................................................................................... 11-15
TRANSISTOR ILLUSTRATION ............................................................................................................ 16
FL GRID ASSIGNMENT/ANODE CONNECTION .......................................................................... 17, 18
BLOCK DIAGRAM-1 (MAIN) ........................................................................................................... 19, 20
BLOCK DIAGRAM-2 (SYSTEM CONTROL) .................................................................................. 21, 22
BLOCK DIAGRAM-3 (MD) .............................................................................................................. 23, 24
WIRING-1 (MAIN) ........................................................................................................................... 25, 26
SCHEMATIC DIAGRAM-1 (TUNER) .............................................................................................. 27, 28
SCHEMATIC DIAGRAM-2 (DECK) ................................................................................................. 29, 30
SCHEMATIC DIAGRAM-3 (MAIN) .................................................................................................. 31, 32
WIRING-2 (SYSTEM CONTROL/CD) ............................................................................................. 33, 34
SCHEMATIC DIAGRAM-4 (SYSTEM CONTROL) ......................................................................... 35, 36
WIRING-3 (FL/KEY) ........................................................................................................................ 37, 38
SCHEMATIC DIAGRAM-5 (CD) ..................................................................................................... 39, 40
WIRING-4 (POWER) ....................................................................................................................... 41, 42
SCHEMATIC DIAGRAM-6 (FL/KEY/POWER) ................................................................................ 43, 44
WIRING-5 (MD) ............................................................................................................................... 45, 46
SCHEMATIC DIAGRAM-7 (MD) ..................................................................................................... 47, 48
WIRING-6 (MECHANISM) .............................................................................................................. 49, 50
TEST MODE .................................................................................................................................... 51-55
ELECTRICAL ADJUSTMENT/PRACTICAL SERVICE FIGURE ..................................................... 56-58
IC DESCRIPTION ........................................................................................................................... 59-71
IC BLOCK DIAGRAM ....................................................................................................................... 72-77
MECHANICAL PARTS LIST 1/1 ........................................................................................................... 78
MECHANICAL EXPLODED VIEW 1/1 ............................................................................................ 79, 80
TAPE MECHANISM EXPLODED VIEW 1/1 ................................................................................... 81, 82
TAPE MECHANISM PARTS LIST 1/1 .................................................................................................. 83
CD MECHANISM EXPLODED VIEW 1/2 ............................................................................................. 84
CD MECHANISM PARTS LIST 1/2 ...................................................................................................... 85
CD MECHANISM EXPLODED VIEW 2/2 ............................................................................................. 86
CD MECHANISM PARTS LIST 2/2 ...................................................................................................... 86
MD MECHANISM EXPLODED VIEW 1/3 ............................................................................................. 87
MD MECHANISM PARTS LIST 1/3 ...................................................................................................... 87
MD MECHANISM EXPLODED VIEW 2/3 ............................................................................................. 88
MD MECHANISM PARTS LIST 2/3 ...................................................................................................... 89
MD MECHANISM EXPLODED VIEW 3/3 ............................................................................................. 90
MD MECHANISM PARTS LIST 3/3 ...................................................................................................... 91
SPRING APPLICATION POSITION .....................................................................................................92
REFERENCE NAME LIST .................................................................................................................... 93


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3
SPECIFICATIONS
REF. NO
PART NO.
KANRI
DESCRIPTION
NO.
ACCESSORIES/PACKAGE LIST
1
8Z-CK4-952-010
RC UNIT,RC-ZAT04
2
8Z-CK3-906-010
IB,EZ(9L)I
3
87-006-240-010
AM LOOP ANT CON(KO)
!
4
87-A80-081-010
AC CORD SET ASSY,EZ BLK
· Design and specifications are subject to change without
notice.
· Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol
are trademarks
of Dolby Laboratories Licensing Corporation.
· The word "BBE" and the "BBE symbol" are trademarks
of BBE Sound,Inc.
Under license from BBE Sound,Inc.


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4
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainit-
ulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylit-
tävälle 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.
Caution: Invisible laser radiation when
open and interlocks defeated avoid expo-
sure to beam.
Advarsel:Usynling laserståling ved åbning,
når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
ATTENTION
L'utilisation 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.
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.
CLASS 1
KLASSE 1
LUOKAN 1
KLASS 1
LASER PRODUCT
LASER PRODUKT
LASER LAITE
LASER APPARAT


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5
1 VEE
¡ TRK ­
Precaution to replace Optical block
(KSS-213F)
1) After the connection, remove solder shown in
the right figure.
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.
Precaution to replace Optical block
(KMS-260A)
1) After the connection, remove solder shown in
the right figure.
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.