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
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to)
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yf
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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
{
|
|
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|
NUM78M1
2F
A
s
|
|
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|
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SUB
ONIE
(RWZ3227)
AC120V
6OHz
Ys.
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JES1A
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JEBIA
ING
£ ‘
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|
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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
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aaa
|
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MECHANISM
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TRANSFORMER
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TRANSFORMER
2
UNIT
7
i
;
O&]
OF]
O48!
Og
O8|
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2SC3311AIR/S)
iP)
(RWZ3231)
;
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XDAIZ4ES
:
by
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DTAIZ4TS
| ; ; ; ; ; | 7 iG 3 () XDCI24ES
MECHANISM UNIT (4,74)
(RYM1229)
ae . o-T See
Sar ee z
SIL.
VG
gu
SLT
1904
V7

CT-W103
6. PCB PARTS LIST
NOTES:
e Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.
e
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.
°
Parts
marked
by
“@”
are
not
always
kept
in
stock.
Their
delivery
time
may
be
longer
than
usual
or
they
may
be
unavailable.
© When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1
When
there
are
2
effective
digits
(any
digit
apart
from
0),
such
as
560
ohm
and
47k
ohm
(tolerance
is
shown
by
J=5%,
and
K=10%).
S60 Q S56 XO S56] nrc e cece tee e rece e eee tt eens RD1/8PM [5][6][1]J
ATK Q > AT XO GTB cece cette eee cece eee en eees RDI/4PS (4][7][3]3
O'S. 0 ORS, oie ene ee arene be (bb eam ates RN2H fol[R}[S]K
1Q Sm O1 Oe hte ad en SAAR tie evar dad onia os A aeko, wralnbsepelaberece RS1P{O][1][0]K
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k Q> 562 X 10’ 562] verre eee eet eee eeeeeeee RN1/4PC[5][6][2][1]F
Mark
No.
Description
Part
No
Mark
No.
Description
Part
No.
Q506 TRANSISTOR XDA124ES
LIST
OF
ASSEMBLIES
Q507,Q508
TRANSISTOR
2SC3311A
Q509 TRANSISTOR 2SA1309A
NSP MOTHER UNIT RWM1699
MAIN UNIT RWZ3226 Q510 TRANSISTOR XDC124ES
NSP SUB UNIT R¥Z3227 Q511 TRANSISTOR XDA1Z4ES
NSP MECHANISM CONNECTION UNIT RWZ3228 Q512Z TRANSISTOR XDC124ES
NSP POWER SWITCH UNIT RWZ3229 Q513 TRANSISTOR XDA124ES
NSP TRANSFORMER 1 UNIT R¥Z3230 Q514 TRANSISTOR XDC124ES
NSP TRANSFORMER 2 UNIT RWZ3231
D101-D103 = DIODE 18S254
D151-D156 DIODE 1§S254
MAIN UNIT D361,D362 DIODE 1$S254
D401,D501 DIODE 188254
SEMICONDUCTORS D502-D504 DIODE 1$S254
1€101 PB-EQ AMP IC CXA1115BP
1€201 DOLBY B IC CXAL1O1P D506-D524 DIODE 188254
1301, 1C351 IC BA15218N D601, D602 DIODE 188254
1C501
LOGIC
IC
TC401
1BP
A
D603-D606
DIODE
1SR35—-100AVL
A IC601, IC602 REGULATOR IC NJM78M12FA D607 DIODE 188254
D608 ZENER DIODE MTZJ5. 6B
Q101-Q108 TRANSISTOR XDC124ES
Q1039 TRANSISTOR XDAI24ES D609,D610 DIODE 18S254
Q151,Q152
N-FET
23K373
D611
ZENER
DIODE
MTZJ5.
1B
Q153,Q154 TRANSISTOR 2SC3311A
Q155 TRANSISTOR XDA1Z4ES SWITCHES AND RELAYS
$551,S552 SWITCH RSG1040
Q156,Q157 TRANSISTOR XDC124ES
Q201 TRANSISTOR XDC124ES COILS AND FILTERS
Q281,Q282
TRANSISTOR
28D2144S
F201,
F202
FILTER
RTF1209
Q283
TRANSISTOR
2SC3311A
L101,L102
COIL
RTF1098
Q301-Q306 TRANSISTOR XDC124ES L301,L302 COIL RTF1102
L303, L304 COIL RIF112]
Q307-Q310
TRANSISTOR
28D2144S
L401
COIL
RTD1065
Q311 TRANSISTOR XDC124ES
Q361, Q362 TRANSISTOR 2SC3311A L402 RADIAL INDUCTOR LFA121K
Q371,Q372 TRANSISTOR 2SC3311A
Q373, Q374 TRANSISTOR 28D2144S CAPACITORS
C101,C102 AXIAL CAPACITOR CKPUYB681K50
Q401,Q402
TRANSISTOR
2SC1815
C€103,C104
AXIAL
CAPACITOR
CKPUYB271K50
Q403
TRANSISTOR
28C3311A
C105,C106
CERAMIC
CAPACITOR
CKPUYB102K50
Q404
TRANSISTOR
2SB1238X
C107-C110
ELECT.
CAPACITOR
CEANL100M16
Q405
TRANSISTOR
XDC124ES
C111,C112
ELECT.
CAPACITOR
CEANL101M10
Q501-Q503 TRANSISTOR XDA124ES
€113,C114 PLASTIC FILM CAPACITOR CQMA822J50
Q504
TRANSISTOR
2SA1309A
C115,C116
ELECT.
CAPACITOR
CEAS2R2¥50
Q505
TRANSISTOR
XDC124ES
C117-C120
CERAMIC
CAPACITOR
CCCSL101550
18
Mark No.
19
C121, C122
C123, C124
C125, C126
C127, C128
C131-C134
C135
C136
C151, C152
C153
C201, C202
C203, C204
C205, C206
C207, C208
C209
C210
€211-C213
C283, C284
(285
C301, C302
C303, C304
305, C306
C307, C308
C309, C310
C311, C312
(313, C314
C315, C316
C317, C318
C319
C320
C321
C323, (324
C351, C352
C353, C354
C355, C356
C361
C362
C373
C401, C402
C403
C404
C405
C406, C407
(408, C409
C410
C501
(502
C503
C504
C505
C506
C507
C508
(551
(554
C555
C601
C602
Description
AUDIO FILM CAPACITOR
BLECT. CAPACITOR
AXIAL CAPACITOR
ELECT. CAPACITOR
AXIAL CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
AXIAL CAPACITOR
ELECT. CAPACITOR
ELECT, CAPACITOR
ELECT. CAPACITOR
ELECT, CAPACITOR
AUDIO FILM CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
CERAMIC CAPACITOR
ELECT. CAPACITOR
AXIAL CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
AUDIO FILM CAPACITOR
AUDIO FILM CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
CERAMIC CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
CERAMIC CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
CERAMIC CAPACITOR
CERAMIC CAPACITOR
PL. PROPYTENE CAPACIT
AUDIO FILM CAPACITOR
Part No.
CFTYA223J50
CEAS470M16
CKPUYB681K50
CEASO10450
CKPUYB471K50
CEASO10M50
CEAS470M16
CCPUSL100550
CEASO10M50
CEAS4R7M50
CEASR68MS0
CEAS4R7M50
CFTYA103J50
CEAS470M16
CEAS221M16
CEAS2R2M50
CKCYB222K50
CEASR10M50
CKPUYB221K50
CGCYX562K25
OGCYX153K25
CFTYA103J50
CFTXA822J50
CEAS4R7M50
CEASR22M50
CEAS100M50
CGCYX272K25
CEAS470M16
CEASO10MS0
CEAS470M16
CEASO10M50
CEAS100450
CKPUYB151K50
CEAS470M16
CEAS100M50
CEASR33M50
CKCYF473Z50
CCCSL101K500
CQPA822J100
CFTYAZ23J50
PLASTIC FILM CAPACITOR CQMA472J50
PLASTIC FILM CAPACITOR CQMA332J50
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
CERAMIC CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
AUDIO FILM CAPACITOR
ELECT, CAPACITOR
CERAMIC CAPACITOR
ELECT. CAPACITOR
ELECT. CAPACITOR
(2200/35V)
ELECT. CAPACITOR
CEAS470M16
CEASO10MS0
CEAS470M16
CKCYB222K50
CEAS470M16
CEAS4R7M50
CEASO10M50
CEAS4R7M50
CEAS100MS0
CFTYA223J50
CEAS4R7M50
CKCYF103Z50
CEAS101M16
RCH1118
CEASO10M50
Mark No. Description
C603 ELECT. CAPACITOR
C604 ELECT. CAPACITOR
C605 ELECT. CAPACITOR
C606,C607 ELECT. CAPACITOR
C608 CERAMIC CAPACITOR
C609,C610 CERAMIC CAPACITOR
C611 ELECT. CAPACITOR
RESISTORS
R341,R342 CARBON FILM RESISTOR
(4. 7K)
R401 CARBON FILM RESISTOR
R406 CARBON FILM RESISTOR
R525 CARBON FILM RESISTOR
(4. 7K)
R601 CARBON FILM RESISTOR
R302 (Qt. TsO002)
VR101-VR104 VR(22K)
¥R301, VR302 VR(10K)
¥R401, VR402 VR(220K)
VRSO1 VR(4. 7K) (Sx TSo002}
OTHER RESISTORS :
OTHERS
CN101,CN102 CONNECTOR POST
CN401 CONNECTOR POST
CNSO1 SP JUMPER CONNECTOR
JA101 JACK
EARTH PLATE
SUB UNIT
SEMICONDUCTORS
1C701 LINEAR IC
D702,D703 LED
D704-D706 LED
D707, D708 = LED
D709 LED
CAPACITORS
C701 ELECT. CAPACITOR
C703 ELECT. CAPACITOR
C704 CERAMIC CAPACITOR
RESISTORS
ALL RESISTOR
Part No.
CEAS221M16
CEAS4R7MS0
CEAS100M50
CEAS221M16
CKCYF103Z50
CKCYF473Z50
CEAS221M16
RCN1028
RD1/2LFM010J
RD1/2LMF101J
RCN1028
RD1/2LMF102J
Roa /bPrn $4279
RCP1046
RCP1045
RCP1049
RCP1020 -y RC PAOLY
RD1/6PYD DD
B3B-PH-K
B2B-PH-K
52147-0510
RKB-020
VNF-091
BAG 124
SEL4214R
SEL4914D
SEL4214R
SEL4914D
CEASO10M50
CEAS100M16
CKCYB222K50
RD1/6PeO0DJ
MECHANISM CONNECTION UNIT
OTHERS
CNS01
SPJUMPER CONNECTOR
POWER SWITCH UNIT
SWITCHES AND RELAYS
A $801 SWITCH
CAPACITORS
C801 CERAMIC CAPACITOR
OTHERS
A TERMINAL
TRANSFORMER 1 UNIT
This unit has no service parts.
TRANSFORMER 2 UNIT
This unit has no service parts.
52151-0910
RSA-069
CKCYF103Z50
RKC-061
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7. ADJUSTMENTS
7.1 MECHANICAL ADJUSTMENT
1. Tape Speed Adjustment and Check
rane Double speed PLAY
3 | a | Normal speed PLAY
input signal & test tape Adjustment value
Adjustment location
Terminate the test point (TP16) at GND using the short-pin, and press the PLAY buttons of
DECKs | and Il.
Remove the short-pin from the test point (TP16) at the beginning of FWD of DECK Il.
VR501 3000Hz + 5Hz
Play back 6000 Hz + 600 Hz
STD-301
(3 kHz)
MAIN UNIT
Oech l
Lent vias Deck
VRIO4
{Rch?
DeckE
vinoe
rsa RS42 =
vrsot @)vrsoz l
Deckr Deckr HC101
at
then) iRen)
TPH TR2
then) (Ren)
Recording Levet
R525
TP16
vasor
Tope Speed Done
WREO1
Recording Blox
Fig. 7-1 Adjusting points
¢ Door damping check and adjustment
. Attach the door spring at position (b) according to lig. 7-2. and stand
the front panel assembly straight up as shown in fig. 7-3.
. Open the doors of DECK | and DECK II simultaneously, and when one
of the doors is fully opend, confirm that the difference between the two
doors is within 15 mm.
. If the specification described in steps 1 and 2 above is not satisfied,
change the door spring position as follows and adjust.
When the door of DECK | opens slower than the one of DECK I/: Change
the DECK !I door spring to position (a).
When the door of DECK | opens faster than the one of DECK Il: Change
the DECK | door spring to position (a).
20

7.2 . ELECTRICAL ADJUSTMENTS
Adjustment Conditions
1. The mechanical adjustments must be completed first.
2. The head must be cleaned and demagnetized.
3. Tum power on allow the deck to warm up for at least a few
minutes before commencing any electrical adjustments.
4. The reference signal is 0 dBV=1 Vrms.
Connect a 10 kQ load resistance to the OUTPUT terminals.
6. Unless otherwise specified, the switches listed below are left
inthe positions indicated.
“
DOLBY NR : OFF
Test Tapes
STD-331E : Playback adjustments
(See Fig. 7-4)
STD-631 or STD-632. : NORMAL bDiank tape
STD-621 : CrO2 blank tape
i 0 dB: 315 Hz, 250 nwb/m
Pere eee ee Peer eee eee eee eee eee eee ee ee eee ee ee ee rs 10s
30s 30s 30s 10s 10s
CT-W103
List of Adjustments
Playback sections
1. Head azimuth adjustment.
2. Playback level adjustment.
Recording sections
1. Recording bias adjustment.
2. Recording level adjustment.
3. Level meter check.
Dolby noise reduction manufactured under license from Dolby Labora-
tories Licensing Corporation.
“DOLBY” and the double-D symbol 00 are trademarks of Dolby
Laboratories Licensing Corporation.
NOTE: This unit has an automatic tape selection feature.
~ 20 dB
Fig. 7-4 Constants of the test tape STD-331E
Deck II
Head azimuth adjustment screw
Fig. 7-5 Head azimuth adjustment
PLAY BACK
RECORDING
Fig. 7-6 Frequency response zone
21

CT-W103
PLAYBACK SECTION
1. Head Azimuth Adjustment
e¢ Tum VR101, 102 (Deck Il) or VR103, 104 (Deck |) to mechanical center positions.
[No.] Mode | Input signal & test tape Adjustment location Measuring location Adjustment value
Play the 10 kHz/-20 dB Head azimuth adjustment
PLAY | section of STD-331E test | screw. LINE OUT ae playback signal
tape.
(See
Fig.
7-5)
:
| 2. | STOP Lock the screw with screw lock after completing adjustment.
2. Playback Level Adjustment
© This adjustment determines the DOLBY NR level, and must be performed with great care.
[Mode | _hotcealttenwon | Aiba ncion | Wenning ibn | Raevake [ema
RECORDING SECTION
VR 104 (Rch)
-10.7 dBV
1. Recording Bias Adjustment
VR 101 (Uch)
VR 102 (Reh)
ne-[ weds [tonal dete
sToP Set the TAPE SELECTOR switch to the NORM position.
Play the 315 Hz/0 dB
section of the STD-331E
test tape.
TP. 1 (Lch)
TP. 2 (Reh)
Repeatedly record, playback
Load the STD-631 test tape. and adjust so that the
Record the 315 Hz and VR401 (Lch) plyaback level of 6.3 kHz
6.3 kHz signals at -20 dBV signal becomes +0.5 dB +
input level and playback. 0.5 dB when compared with
the 315 Hz signal.
2. Recording Level Adjustment
Apply a 315 Hz signal to
the fine input terminats, Volume of the output fevel of
load the STD-631 or the oscillator
STD-632 test tape.
Record the above signal Repeatedly record, playback
onto the STD-631 or VR301 (Lch) M and adjust so that the
STD-632 test tape, and Fi playback signal level
playback becomes -11.2 dBV.
Record the above signal
onto the STD-621 test -11,2 dBV + 1.5dB
tape, and playback.
3. Level Meter Check
[No] Mode | Input signal & test tape Adjustment location Measuring location Adjustment value
Check that the level meters
Volume of the output level of | TP. 1 (Lch) “0 dB" light up within
the oscillator. TP. 2 (Reh) ~11.2 dBV + 2 dB of the
signal output levei.
Apply a 315 Hz/-6 dBV
{0.5V) signal to the Line
Input terminals.
22

CT-W103
8. PANEL FACILITIES
@ POWER (STANDBY/ON) switch
NOTE:
© Function display
The POWER switch activates the secondary transformer only. © REC LEVEL ATT button (@ OFF, .{ ON)/
Even when the switch is in the STANDBY position, there will COPY SPEED button (& NORM, — HIGH)
be a power flow to the deck's circuits as long as the power e ifthe sound is distorted , set this button to ON to attenuate
cord is connected to a power outlet. the level and reduce distortion.
e@ When recording from one tape to another tape, this button
@ Deck I operation buttons can be used to switch between NORMAL SPEED and HIGH
m» (PLAY) : Playback SPEED recording.
<< (REW) : Rewind
me (FF) : Fast forward
w/& (STOP/EJECT) : Stop/Eject
tt (PAUSE) : Pause w Dolby NR System
@ Deck Il operation buttons Dolby NR systems are designed to reduce the amount of tape
@ (REC) : Recording hiss, mainly in the treble components. During recording, the
> (PLAY) : Playback high-pitched pianissimo sounds which are most characteristic
«¢< (REW) : Rewind of audible noise are boosted, and during playback, only these
pe (FF) “Past forward boosted aves heartbeat so se the te is returned
i : to normal. As a result, the noise is attenuated by an amount
amo ia equal to the boosting in the treble range. The Dolby NR ON
system reduces noise in the treble range, cutting tape hiss and
@ DOLBY* NR switch (B OFF, .. ON) expanding the dynamic range.
*
*® Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
° “DOLBY” and the double-D symbo! OQ are trademarks of
Dolby Laboratories Licensing Corporation.
NOTE:
When a tape has been recorded using the Dolby NR system,
make sure that the DOLBY NR switch is set to the ON position
during playback.
Function display
OPERATION MODE INGICATOR
MAX LEVEL MAX
AUTO
REC LEVEL
CONTROL
REC
ATTENUATDAI
HIGH SPEED
@ Level meter
® The (CO between the -3 and 0 mark indicates the reference
level for the Dolby NR system.
(8: REC/COPY indicator
Lights up during recording or copying.
9° ATTENUATOR/HIGH SPEED indicator
e Lights up during recording when the REC LEVEL ATT switch
is set to ON.
e Lights up during High speed copying.
23

CT-W103
9. SPECIFICATIONS
poailasd candied scSiseaevesavsosvocsgzeveseeasesexs 4 track, 2-channel stereo
“Hard Permalloy” recording/playback head x 1
“Hard Permalloy” playback head x 1
“Ferrite” erasing head x 1
Mtl essessescxciieeres hia ecieeds cesnscidectestealaccatadies DC servo motor x 1
Wow an Flutter... ccc csssssssecssetseseeeeeee 0.15% (WRMS, JIS)
Fast Winding Time ................... Approx. 115 seconds (C-60 tape)
Frequency Response (at ~20 dB recording level)
TYPE II (HIGH/CrO2) tape..........ccsssecesseeeseeeeers 30 to 16,000 Hz
TYPE | (Normal) tape eties ». 30 to 16,000 Hz
Signal-to-Noise Ratio
Dolby NR OFF ........ cc cescesesscssesscercsnssnseesenses More than 56 dB
Noise Reduction Effect
Dolby NR ON Qu... eececssssereereenees More than 10 dB (at 5 kHz)
Harmonic Distortion ............ccccsesscesceseserreeees No more than 1.0%
(at —4 dB: 160 nwb/m)
Input (Sensitivity)
LINE (INPUT)..........ccecsccesees 112 mV (Input impedance 24 kQ)
Output (Reference level)
LINE (OUTPUT) ...........ccceee 0.5 V (Output impedance 1.9 kQ)
Miscellaneous
Power Requirements
Australian model ...........cccccsesrceeee AC 230 ~ 240 V, 50/60 Hz
U.S. model........... ‘a ... AC 120 V, 60Hz
Power Consumption ...........:cccscssssssessssessesessteseeseenesscscseeseseaees 15W
Dimensions................ . 420 (W) x 130 (H) x 250 (D) mm
WI QI ascisiesick desistececcsenssscecndesesetartedocesasSessedensdasdendsestsbessaatabees 4.2 kg
e4
Accessories
Operating instructions ............:cscssssssssssesessssstescossersssecessssensneatees
Connection cord with pin plugs
Features
DOLBY NR
Synchronized copy start
High-speed and normal-speed copy (Deck | > Deck II)
Relay playback (Deck Il -> Deck |)
6-segment LED level meter
Automatic tape selectors
Automatic recording level control
REC LEVEL Attenuator
NOTE:
Specifications and design subject to possible modifications
without notice due to improvements.