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SERVICE MANUAL
COMPACT DISC STEREO RADIO
CASSETTE RECORDER
BASIC TAPE MECHANISM : TN-51RV-240
BASIC CD MECHANISM : CMS-B31TG6
CSD-FD91 U
S/M Code No. 09-003-426-8R1
REVISION
· This Service Manual is the "Revision Publishing" and replaces "Simple Manual",
(S/M Code No. 09-001-426-8T1).
· If requiring information about the CD mechanism, see Service Manual
of CMS-B31TG6, (S/M Code No. 09-001-341-1N2).
DA
TA


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SERVICE MANUAL
COMPACT DISC STEREO RADIO
CASSETTE RECORDER
BASIC TAPE MECHANISM : TN-51RV-240
BASIC CD MECHANISM : DA11T3C
CSD-FD91
CSD-FD93
U
HT
S/M Code No. 09-00A-426-8S2
SUPPLEMENT
· This Service Manual contains information about the difference between the
CD MECHANISM "DA11T3C" and "CMS-B31TG6" for the MODEL
CSD-FD91(U) / FD93(HT). If requiring other information, see Service Manual of
CSD-FD91(U), (S/M Code No. 09-003-426-8R1),
CSD-FD93(HT), (S/M Code No. 09-009-426-8S1).
DA
TA


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CLASS 1
LASER PRODUCT
KLASSE 1
LASER PRODUKT
LUOKAN 1
LASER LAITE
KLASS 1
LASER APPARAT
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 OBJEC-
TIVE LENS ON THE OPTICAL PICK-UP BLOCK.
s 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.
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
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.
Solder
SF-P101NR
PICK-UP ASSY PWB


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­ 3 ­
ELECTRICAL MAIN PARTS LIST
CD MECHANISM
REF NO.
CMS-B31TG6
DA11T3C
R412
82k
220k
R413
12k
15k
R415
33k
22k
R420
10k
3.3k
R431
390k
270k
R432
390k
270k
R439
12k
15k
R445
8.2k
18k
R447
18k
12k
R448
56k
NO MOUNT
R457
27k
10k
R478
100k
150k
R479
3.9k
15k
R485
3.9k
15k
R486
3.9k
15k
R487
3.9k
15k
R488
100k
150k
R495
390
1k
R496
390
1k
R499
39k
82k
CD MECHANISM
REF NO.
CMS-B31TG6
DA11T3C
C422
2700P (87-010-138-080)
3300P (87-010-184-080)
C423
0.068 (87-010-956-080)
0.047 (87-010-992-080)
C424
0.056 (87-010-993-080)
0.22 (87-016-460-080)
C442
15P (87-010-312-080)
18P (87-010-313-080)
CD MECHANISM
CMS-B31TG6
DA11T3C
PANEL,CD (88-CH6-019-010)
PANEL,CD SANYO (8Z-CDB-169-010)
HLDER,CHUCK A (85-CD7-217-010)
HOLDER,CHUCK A(S) (8Z-CH4-225-110)
MECHANICAL PARTS LIST 1 / 1


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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
WIRING
PIN3
M1
SW1
+
-
M2
M1
(SPINDLE MOTOR)
SW1
(INSIDE LIMIT SW)
M2
(SLED MOTOR)
J MOTOR C.B
_
+
1
16
TO B CD C.B CN401
PICK UP ASSY
SF-P101NR
FC401
T
O
B
CD
C.B
CNA402
1
3
5
6