Pioneer CT-W103 User manual

ORDER NO.
RRV1068
STEREO DOUBLE CASSETTE DECK
CT-W103
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type Power Requirement Remarks
| cT-w103 | W103
CONTENTS
1. SAFETY INFORMATION -ccceescessseceeececeeeeeeseeeesenes 2
2. EXPLODED VIEWS, PACKING AND PARTS LIST--3
3. BLOCK DIAGRAM -cesccescceccecceccsescesenssenseassenees 10
4. PCB CONNECTION DIAGRAM: ----:ccceccceteeeeeeetees 11
5. SCHEMATIC DIAGRAM c:+--rceeeeeeeseceeeeceeeeseeseeeeee 15
6. PCB PARTS LIST --re-ccecceeceeeecescsccseeeceeeceeeseeeeees 18
7. ADJUSTMENTS <00---ccsscccssececseeceseeeetersesseeeseneees 20
8B. PANEL FACILITIES ------------seeeeseeeeneeeeeeeeeeeeeeeeeee 23
9. SPECIFICATIONS --e---eee-eeeeeeesceeeeeceecreeseeeeeeeees 24
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A
PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L3R op2 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetbergiaan 1, 9120 Melsele, Belgium
PTY.LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
PIONEER ELECTRONICS AUSTRALIA
© PIONEER ELECTRONIC CORPORATION 1994 Bee ao tieaatr

CT-W103
1. SAFETY INFORMATION
This
service
manual
is
intended
for
qualified
service
technicians;
it
is
not
meant
for
the
casual
do-it-yourselfer.
Qualified technicians
have
the
necessary
test
equipment
and
tools,
and
have
been
trained to
properly
and
safely
repair
complex
products
such
as
those
covered
by
this
manual.
Improperly
performed
repairs
can
adversely
affect
the
safety
and
reliability
of
the
product
and
may
void
the
warranty.
If
you
are
not
qualified
to
perform
the
repair
of
this
product
properly
and
safely,
you
should
not risk trying to do so and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Weifare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse
symbols
-§&—H-
(fast
operating
fuse)
and/or
-§&—#-
(slow
operating
fuse)
on
PCB
indicate
that
replacement
parts
must be of identical designation.
REMARQUE
(POUR MODELE CANADIEN SEULEMENT)
Les
symboles
de
fusible
-§—H
(fusible
de
type
rapide)
et/ou
-§&—#
(fusible
de
type
lent)
sur
CCI
indiquent
que
les
piéces de remplacement doivent avoir la méme désignation.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control! shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.
rs Reading should
Leakage | 0t be above
0.5mA
Test all
exposed metal
surfaces
We
© Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
2.PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vol-
tage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in
this Service Manual.
Electrical components having such features are
identified by marking with a A on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in
the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product
Safety
is
continuously
under
review
and
new
instructions
are
issued
from
time
to
time.
For
the
latest
information,
always
consult
the
current
PIONEER
Service
Manual.
A
subscription
to,
or
ad-
ditional
copies
of,
PIONEER
Service
Manual
may
be
obtained
at
a
nominal
charge
from
PIONEER.

__|
1
i
2
I
3
I
4
I
5
!
6
2. EXPLODED VIEWS, PACKING AND PARTS LIST
1. EXTERIOR AND PACKING
NOTE: Screws adjacent to V mark on the product
are used for disassembly.

CT-W103
NOTES:
¢ Parts marked by “NSP” are generally unavailable because they are not in our Mastcr Spare Parts List.
¢ The A\ mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure
to use parts of identical designation.
e Parts marked by “@” are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable.
Parts List
Mark No. Description Part No. Mark No. Description Part No.
1 Main Unit RW2Z3226 46 Bonnet REA1077
NSP 2 Sub Unit RWZ3227 47 65 Label ORW 1069
NSP 3 Mechanism Connection RWZ3228 (CT — W103/KUXJ Only)
Unit NSP 48 Fuse Caution Label RRW - lll
NSP 4 Power Switch Unit RWZ3229 49 Screw BBZ20PO60FMC
NSP 5 Transformer 1 Unit RWZ3230 50 Screw BBZ30PO80FMC
NSP 6 Transformer 2 Unit RWZ3231 51 Screw PMA30P060F MC
7 Cassette Mechanism Unit RYM1229 Ys
A 8 Cord Stopper CM — 22C 53 tree
A 9 AC Power Cord PDG1015 54 Connection Assy RDE1036
A 10 Fuse (1A) REK1057 55 Operating Instructions RRB1140
(English) (CT — W103/KUXJ)
11 Connector Assy (3P) RKP1672 55 Operating Instructions RRE1082
12 Connector Assy (3P) RKP1673 (English/French) (CT — W103/KCXJ)
13. Connector Assy (2P) RKP1681
14. Leaf Switch (I PLAY) RSN1025 56 Pad L RHA1056
15 Leaf Switch (II PLAY) RSN1025 57 Pad R RHA1057
58 Packing Case RHG1590
16 Leaf Switch (MAIN I) RSN1025 (CT — W103/KUX)J)
17 Leaf Switch (MAIN II) RSN1025 58 Packing Case RHG1538
18 Leaf Switch (REC) RSN1025 (CT —- W103/KCXJ)
A 19 Power Transformer RTT1265 59 Sheet Z23 — 007
20 Spring R RBH1305 60 Spacer REC1244
21 Spring RBK1004
22 Damper Assy REC1241 Packing
NSP 23 Chassis RNB1101
24 Bracket RNE1765
25 Cord Clamper RNH — 184
26 LED Holder RNK2060
NSP 27 = Stud RNL — 792
28 Rubber Sheet AEB1111
29 Supporting Feet AXA7010
30 POWER Knob RAC1886
31 MODE Knob RAC1887
32 PLAY Knob RAC1888
33. REC Knob RAC1889
34. REW Knob RAC1890
35 FF Knob RAC1891
36 PAUSE Knob RAC1892
37 STOP Knob RAC1893
38 Meter Lens RAH2387
39 Door Lens RAH2388
40 Door L RAH2389
41 Door R RAH2390
42 Panel RAH2391
43 Name Plate RAM1007
44 Indicating Panel REE — 113
45 Panel RNA1795
(CT - W103/KUX]J)
45 Panel RNAI1796
(CT — W103/KCXJ)

4
CT-W103
2. CASSETTE MECHANISM UNIT
ae) 2
a ro
3 a Xs) c 2 «
*
® £ — s 2 > 3 x pr © E “a £ a
a
@ c = 2 [*] z

Parts List
Mark No. Description
_ oOOMaND Of WON re
ei nail all all od
oP ON He
[We all all ad COO OND
iS]
—
NWONNY
Om ON
wWwWWWwd NNONNH
SSERS8
Pw
_
> b> bh
toi et NS)
ALL & loi oie ES ker)
Spring
Spring
Spring
Spring
Spring
Cassette Spring
Spring
Spring
Spring
Spring
Plate Spring
Washer
Washer
Spring
Spring
Earth Lug
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Screw
Reaf SW (CRO)
Frame Assy
Function Plate
REC Stopper
SW Lever
REC Lever
PLAY Lever
REW Lever
FF Lever
SE Lever
PAUSE Lever
PAUSE Arm
Belt
Belt
P Idler Arm
PL Idler
Inter Lock
Eject Lever
PF FF Idler Assy
Senser
AS Base
Cam Gear
Senser Lever
Control] Lever
Part No.
AZB1336
AZB1337
AZB1338
AZB1339
AZB1340
AZB1343
AZB1344
AZB1346
AZB1347
AZB1348
AZB1349
AZB1350
AZB1351
AZB1352
AZB1353
AZB1954
AZB1355
AZB1356
AZB1357
AZB1358
AZB1359
AZB1360
AZB1361
AZB1362
AZB1363
AZB1364
RSN1024
AZN2113
AZN2116
AZN2117
AZN2118
AZN2119
AZN2120
AZN2121
AZN2122
AZN2123
AZN2124
AZN2125
AZN2126
AZN2127
AZN2128
AZN2129
AZN2138
AZN2139
AZN2140
AZN2148
AZN2149
AZN2150
AZN2151
AZN2152
Mark No.
NSP
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
Description
FW Assy
Pinch Arm
Pinch Roller
Head Base
Head Holder
Switch Plate
Button R Holder
Button L Holder
Plate SW
Connect Plate
Connect Arm
Release Arm
Motor Holder
Tape Guide
E Head
R/P Head
Motor Assy
Cassette Mecha
Spring
Chassis
Spindle Base
S Reel
FF Idler
Nylon Binder
T Reel Assy
CT-W103
Part No.
AZN2153
AZN2157
AZN2158
AZN2159
AZN2160
AZN2162
AZN2163
AZN2164
RNE1790
AZN2166
AZN2167
AZN2168
AZN2246
AZN2174
AZP1025
AZP1036
AZX1037
RYM1229
AZB1342
AZN2112
AZN2130
AZN2136
AZN2137
Z09 — 057
AZN2131

CT-W103
3. BLOCK DIAGRAM
LINE ALC
iN BLOCK BUFFER DOLBY B C) LINE
©
Q361,0362
1C351
1¢201
als
Q371,0372
—6dBV
us
Q373,0374 ene
ATT ON/OFF
LINE MUTE
pied
0281
,Q282
pa wens . eee
¥ 1c101
+
R/P SWITCH
Q151, Q152
r-7
I O
R/P HEAD ¥ : oS =
REC EQ AMP
1€301
Q307 ,Q308
REC MUTE
O BIAS OSC
ERASEHEAD
&
BLOCK
2
REC
Q401,0402
10

=
v —
m
=
=
2
e
4.
PCB
CONNECTION
DIAGRAM
TIMU MelMAHOSM OT
(GASH
FINA)
(AX
T)
TIMU
UIAM
soul Fe HOE
E-D-0-0-8-8-F1 Y a
toso
SOIO S083!
tolo 10S)
10adl
Zoro
a0!o
EQIO ttEO
POO TOEO
80EO 5020
e0zo
10rd! Toeo
toED| BOEO
yore
2010 agp 0°!
8010 ageg EEO
BOEO BORO O1ZO
rato ROEO
sto Eato 68
2210 BZIO E0EO
Tero OteO EOKO FICO
IOBAV soco
SOPAV toco
E0c0
TIMU MelIMAHOSM OT
TIMU gue (GASH .3) (AXE)
=
GPT
— TIMU MeIMAHOSM OT
(GA3H 9\A) (A\S)
TIMU MeIMAHOSM OT
(A\))
(Ye2A AOTOM)
TIMU M2IMAHO3M OT
(ANA)
TIMU MelMAHOSM OT
(ANA)
royal ©
UOITISUU09D MelW“AHOSM
TIMU
BE1O COED Boag SIEO
1OEAV | SOEO 10ED cots ARAMAOACMAAT
TIMU §
s
e This diagram Is viewed from the foil side.
TIMU HOTIWe AAWOF
anco AaWwo9 2A /A\
sHO8 VOSTOA
12

CT-W103
|
é 3
4
i
5
|
6
La
© This diagram is viewed from the mounted parts side.
TO MECHANISM UNIT
POWER
SWITCH
UNIT
MAIN
UNIT
(174)
(R/P
HEAD)
Q371
0283 Q372
10351 0324
Q361
Q282 jq362
Q201
ic602 Q102
IC201 Q101
Ic601
0105
Q106
Q311 Q103
Q307 Q104
Q506 9308
Q509
Q507 IC101
Q508 jc301
ic501
Q107
Me
¥.
Ti
ee
D
we’
Ene
109
i
Bio
minisé
C
BOOS
SIAL
“A
AAS
SS
RES
to)
|S
yf
*
“7
*
TEL
3
+»
—<)
Fe
end
i)
;
:
405 x7" of BA ome ber ists Soo ck ai
Q513
°
5
Q108
a
Ste
a a
“Ted:
fl
po
Mt
\-
>
,
=
ay
0
al
PO)
WS
Arm
me
Onn
iD
Q510 9404 9306 ; i. "\ imo CULeTe pate ‘a: Pee) DOR
Q304 Q151 obit ft San TAM 25+ SIS _—
Q5i1
476)
Se
-
<
:
HIP
Fe
$
5
2F
(9
Rue
———
AP,
Q505 2153 Q152 . | Osta cee oe hes? Sak eg Rope Lay: Ass 4 GED &
50 ate > oe: Wy ctrg - SE) ACE PAS: Boos Cor pick xe
Q303
Q154
wie
Cah
atx
see
bok
ao
eB)
>
|
|
thay
aomartie
Biya
ae
5B
ior
|
VR103
VRIO4
VR101
VR102
vr3o1 |G
VR302 |
Pe oa
Q512 9504 Q309 Q156 =.
Q514 403 Q310 Q157 mm} a3 ee
ae &
ie
TRANSFORMER Sa2 &2 0302 | vasor I] a @sOGho) 0s Gas) Gah aml feee a ail
2
UNIT
DFO
||6--.0
ono
1k
ol
oD
eo.
ceo
Lod
|
Ie
Ss
Q502 VR401
Q501 vR402
NOTE FOR PCB DIAGRAMS: @503
1. Part numbers in PCB diagrams match those in the schematic
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
Bic E'S (CE
Transistor
with
resistor
TO
MECHANISM
UNIT
(4/4)
TO MECHANISM UNIT
(3/4)
(E.
HEAD)
TO
MECHANISM
UNIT
=
TO
MECHANISM
UNIT
(2/4)
(R/P
HEAD)
(4/4)
(MOTOR
ASSY)
TO
MECHANISM
UNIT
(4/4)
1c701
0GsoOGS5
Field effect
transistor
MECHANISM CONNECTION
UNIT
13

5.
SCHEMATIC
DIAGRAM
|
Bo
ae)
MAIN
UNIT
(RWZ3226)
EE
:
VATZ
MECHANISM ive 72) '
UNIT (1/4) 4
DOLBY B NR AP | : A
ops
(ene
18/se
N
5 - I-6dBV
ang,
S
(O);
Gaul
SS
<
z
ie
:
;
-
a = ms h « on
<
Pb
5
250
5
Bs
ar
VAI2
BUFFER
¢.
os
key
:
7
att boas Pe gamaaes tO ee —
es | o.8 ae Phe 348 J
oaa WOg coma
g aa o RI2 -31 2aBV 241 Se A eo
2.2758
x i
a
(0)
JAIQ1 (274)
47@P (PU)
RTFI@98
&. 4 [e351 (272) hts
foes
BA1S216N
C352
VA12
22K
ae TKR
<2
ATTENUTOR
Ra
oh. | TPIT ON/OFF Vee
c) % LG OEE,
e134
C133 4, 7mH
47TeP
(PU)
VA12
FPEPLS
Pha Ee
C201
MECHANISM ate —. Loft te o]Be
UNIT (2/74) oe ane az x BAR,
(RYM1229) ih aw | | GEE EE
GND& vEay
OP (PU)
LINE MUTE
a |
|
|
I
I
I
|
|
|
{
|
|
|
R/P HEAD 5708 «mw [=5. 6a8y| orf
Efe im \ oS we ony mga’ e S. E6s8v]
? < at TPI7
Big
*
z
4
FoR
o
w
n
roe
as
aD
af oT 7S E ey Oo
R/P
SWITCH
(erate
4
REC
EQ
AMP
zZ
;
| GNDA GNDC 5 7
| 4
| 8A15276N
RTFI182 1C3@1 (272)
1
Say
TP1
DOLBY
L
!
Vm
R301
R333
a
A,
4.7/§8
ee:
t
Sik]
919
No
RTFV1Z1
C317
Bathe,
ae
A
|
2508
(Puy
3
ve12
Cc
38h
: g RCN? 028 a '
TP2 DOLBY R
|
wn
|
2
4K
|
35
“>
af
veK
i
:
Z
5°
LINE
MUTE
‘
-
oe ° ! :
' oo R302
t 1K 910 7 3s br 3
|
fe
SR
REC
MUTE
oT
fe
A
|
VvESV
|
i}
BIAS Adj Tepe toes :
MECHANISM
E38
3
UNIT (3/4) a BIAS OSC —s - == - 0
(RYM1 229) g7,10° t5]0° ne a
Bi
ea
Sea
eye.
oe
=
Ss
a
Uf
2SC1815-v/GR
'
|
7
\
ang ang
f
1OSKHZ
re
p_2SC1815-v
76
| |
E ee oD) : aa 7 @ | |
|
)
2
ve?
@|(O
|
! S 5 & : @||@ |
f as tik TP44 38 BIAS FREQ. |
1 AZPIOZ5 ig BIAS OSC | pep | Uo @}|@ |
Spacers "e an @}|@ |
; aS ©] |© :
ne 2CRO 2 & =.
|
:
Le
|
sREc
or
s8
C701
'
| 2. Se AG BAG1 24 |
1
|
TRANSFORMER
1
UNIT
LINE
MUTE
Vce
i
|
(RWZ3230) } : : © QOeO® O© QO Dae renee “7 D702 —703, 707,708; SEL4zI4R |
|
>-—
—
—-—
--
©
©
O9OO@OOOO
al
|
_pros—rosi7os"””
seamen
|
ts eae ek er ee Fa See et POWER OFF MUTE ' | pats eae
A
AC
POWER
CORD
|
yr
{
|
|
Soe
|
NUM78M1
2F
A
s
|
|
He
a
|
“|
SUB
ONIE
(RWZ3227)
AC120V
6OHz
Ys.
]
uds1
JES1A
J8@1
JEBIA
ING
£ ‘
,
|
ea
|
@) (© @)| (® 8 [ eer Se ||
ale
c=
a.
ap
|
rr
|
ee
PDG 1015 1 | D2QPwwo21 BE o2ppwwezse O64? @ on 8 ' | = ea ea a ey a j NOTES He! parts are net identified in the os
i
4
‘ere
fi
ee
:
bee
pp
pea
,
obede
TT
8
diagram
the
followings
are
used.
a
Small
ls
cas
ie
aaa
|
wasesov
|
-lale
2
|
—31©
9
©9900
DEO
OOD)
OHOO00k
MECHAN
‘ im ws S92 SES +86 e ated ©] w lt Py a ae
isa
BOWER
ote
Tes
eee
ai
als)_lgléfg;
MECHANISM
CONNECTION
UNIT
+
—ssszs«
SIGNAL
R
TRANSFORMER
SWITCH
g|z/a)2/e/
>|
al>
a(cl{a/Sjals
|
= PLAYBACK SIGNAL et UNIT as | ae ec ee Bball |e) 18)" Le | €)—asasooninvs) —-€G)oreteats
:
'
1 1
or
cr
oe
|
c> : RECORDING SIGNAL _ ((RWZ3229)| ae 7 Sz} Pe] Oz] CF Pel Ou] CF | €)
TRANSFORMER
2
UNIT
7
i
;
O&]
OF]
O48!
Og
O8|
OF]
Og
2SC3311AIR/S)
iP)
(RWZ3231)
;
!
XDAIZ4ES
:
by
6)
DTAIZ4TS
| ; ; ; ; ; | 7 iG 3 () XDCI24ES
MECHANISM UNIT (4,74)
(RYM1229)
ae . o-T See
Sar ee z
SIL.
VG
gu
SLT
1904
V7