Pioneer DC-200Z User manual

e1rvice
PALET ET
CIRCUIT & MECHANISM
DESCRIPTIONS |
REPAIR
&
ADJUSTMENTS
[R=
eS
ARPEEO
oe
STEREO
CASSETTE
TAPE
DECK
AMPLIFIER
C-2002Z
DcC-2012
e DC-201Z differs from DC-200Z in style design (color).
e Models DC-200Z and DC-201Z come in versions distinguished as follows:
Applicable model
Type ————__—— Power requirement Destination
DC-200Z DC-2012
HE AC220V (240V)* European continent
AC240V (220V)* United Kingdom
AC220V (240V)* West Germany
AC120V only U.S.A.
AC120V only Canada
AC110V/120V/220V/240V (switchable) General market
*Change the primary wiring of the power transformer.
®
This
service
manual
is
applicable
to
the
HE
type.
For
servicing
of
the
HB,
KU
and
HEZ
types,
please
refer
to
pp.
57-66.
For
servicing
of
the
other
types,
please
refer
to
the
additional
service
manual.
@ Ce manuel d’instruction se refére au mode de réglage, en francais.
e Este manual de servicio trata del método de ajuste escrito en espaiiol.
PIONEER ELECTRONIC CORPORATION 3 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, California 80801 U.S.A.
TEL: [800) 421-1404, [phone]
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Keetbergiaan
1,
2740
Beveren,
Beigium
TEL:
03/775-28-08
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Austratia
TEL: (O03) 580-9911
YH © MAR. 1984 Printed in Japan

|e] ot oleh 41a leLs—lek F4
CONTENTS
1. FRONT PANEL FACILITIES............. 3
9 SPECIFICATIONS .4 cs .¢4004ceeaueue.. 4
3. “DISASSEMBLY te ies oe Bh ea Se oS 5
4: PARTS COCATION: o2 cnws-t ype de baeas 7
5. EXPLODEDVIEW ..........00 000 eee 8
6. ELECTRICAL PARTS LIST...........005 15
7 "PACKING > os malt oh bona nates Melted eee 18
8. P.C. BOARDS CONNECTION DIAGRAM .... 19
9. SCHEMATIC DIAGRAM.............05 23
10. BLOCK DIAGRAM ...........000e eae 27
11. ADJUSTMENTS ............0000eeeee 29
REGLAGE 1.0... ccc ee ee 35
PST sey a bites e ek dew a 41
1D? NE DATS cj: 35 ARS hoe eee eeetariia ae 47
13. MECHANISM DESCRIPTIONS............ 48
14. SUPPLEMENT FORHBTYPE.........:.. 57
15. SUPPLEMENT FOR KU TYPE............ 58
16. SUPPLEMENT FORHEZTYPE........... 60

@ POWER SWITCH
NOTE:
When
this
switch
is
pushed
to
ON
or
OFF,
the
power
meter
may
light.
This
is
not,
however,
a
failure
or
malfunction.
POWER INDICATOR
HEADPHONES JACK
BASS CONTROL
TREBLE CONTROL
BALANCE CONTROL
©oeoe0o8
FUNCTION SWITCHES
TAPE
(00)
:
Push
when
playing
back
tapes.
TUNER
(#)
—:
Push
when
listening
to
broadcast
on
the
tuner.
PHONO
(GG):
Push
when
playing
records
on
the
turntable.
© VOLUME CONTROL
© EJECT BUTTON
Push this button to open the cassette door.
@ OPERATION SWITCHES
@
(Rec)
:
Push
this
switch
to
start
recordina.
When
depressed
to
the
ON
position,
the
Rec
indi-
cator
lights.
The
switch
does
not
work
when
a
cassette.
is
not
loaded
or
when
the
erasure
prevention
tabs
of
a
loaded
cassette
have
been
broken off.
<@< (REW) : Push this switch to rewind the tape quickly.
pm (Play) : Push this switch to start tape playback.
PP (FF) : Push this switch to sent the tape forward
quickly.
® (Stop) : Push this switch to stop the tape running
and to release the function switches.
ul (Pause) : Push this switch to stop the tape temporarily.
Release it to resume running.
The tape does not stop during fast forward or
rewind operations even when the §9 (pause)
switch is pushed.
@ REC INDICATOR
This lights during the recording mode.
@ TAPE COUNTER
@® RESET BUTTON
Push this button to reset the tape counter display to 000.
FACILITIES
@ TAPE SELECTOR
These
selectors
allow
the
tape’s
bias
and
equalization
characte-
ristics
to
be
selected
during
recording
and
the
equalization
cha-
racteristics
during
playback,
in
line
with
the
type
of
tape
being
used.
METAL
:
Push
when
using
the
METAL
tape.
CrO,
:
Push
when
using
the
CrO2
tape.
NORMAL
:
Push
when
using
the
NORMAL
tape.
@® *DOLBY NR SWITCH
Push
this
switch
to
ON
when
recording
with
the
built-in
Dolby
noise
reduction
system
and
when
playing
back
tapes
which
have
been
recorded
using
the
system.
BAAR AAA ARABS
*Noise
Reduction
manufactured
under
license
from
Dolby
Labo-
ratories Licensing Corporation.
“Dolby” and the double-D symbol ave trademarks of Dolby
Laboratories Licensing Corporation.
aa
@ POWER METER
2.
SPECIFICATIONS
DC-200Z/DC-201Z
AMPLIFIER SECTION
Continuous
Average
Power
Output
is
40
watts*
per
channel,
min.,
at
8
ohms
from
40
Hertz
to
20,000
Hertz
with
no
more
than
0.3%
total
harmo-
nic
distortion.
*Mesasured
pursuant
to
the
federal
Trade
Commission's
Trade
Regulation
rule
on
Power
Output
Claims
for
Amplifier.
:
Continuous Power Output
40
to
20,000Hz..........
40W
+
40W
(T.H.D.
0.3%,
822)
1kHz
(DIN)
22...
ee
eee
50W
+
SOW
(T.H.D.
1%,
82)
Hum
and
Noise
(IHF,
short-circuited,
A
network)
PHONO
42
$55.5.9-4
203
©
ei
ee
ERS
EE
OA
72dB
Hum
and
Noise
(DIN
continuous
Power/50mV)
PHONG:
456s
aoe
PP
we
PE
SSE
68dB/60dB
Total
Harmonic
Distortion
(40Hz
to
20,000Hz,
8
ohms,
from
TUNER)
Continuous
rated
power
output
.......
No
more
than
0.3%
20
watts
per
channel
power
output
Bite
Se
ebb
ein
tae
ale
eS
ote
ete
Bae
No
more
than
0.2%
Tape Deck Section
Systane
ow
en
ee
a
ar
ee
eS
4
track,
2-channel
stereo
Heads
........
“Hard
Permalloy”
recording/piay
back
head
x
1
3
“Ferrite”
erasing
head
x
1
MOtOr
soe
Sb
ae
ee
oe
ates
OE
ye
DC
servo
motor
x
1
Wow
and
Flutter...
....20005
No
more
than
0.06%
(WRMS)
No
more
than
+0.18%
(DIN)
Fast
Winding
Time
....
-
Approximately
110
seconds
(C-60
tape)
Frequency Response
-20dB recording:
Normal
tape...
6.
es
35
to
13,000Hz
Chrome
tape
......
2-0
ee
ee es
35
to
14,000Hz
Metal
tape...
ee
ee
et
35
to
15,000Hz
Signal-to-Noise
Ratio
Dolby
NR
OFF...
1...
eee
ee
ees
More
than
57dB
Noise
Reduction
Effect
Dolby
NRON
........-0005
More
than
10dB
{at
5kHz)
Harmonic
Distortion.
........-05%
No
more
than
1.5%
(OdB)
Furnished
Parts
Operating
instructions
..
0...
ee
ebaoc
Af
Miscellaneous
Power requirements
KU
and
KC
models...
2...
eee
ee
es
*
AC120V,
60Hz
HE
model...
0.
ee
ee
ee
ee
AC220V
,
50/60Hz
HB
and
HP
models
.......00.00
2-2
se
ee
AC240V,
50/60Hz
Sand
S/G
models
......
AC110V/120V/220V
/240V
,
50/60Hz
(switchable)
Power Consumption
KU
model
.
00.
ee
ee
ee
105W
Girdle
soe
ve
sa
oA
artes
ete
tee
be
Fehon
tie
aS,
Sas
182W
HE,
HBand
HP
models
......--
+--+
eee
ere
eee
270W
Sand
S/G
models
.......
0.05
ete
ete
ee
ees
96W
Dimensions
.........-005
420
(W)
x
210
(H)
x
248
(D)mm
Weight
(without
package)...
6
6.
ee
ee
ee
ee
7.7kg
NOTE:
Specifications
and
design
subject
to
possible
modification
without
notice,
due
to
improvements.
Dc-2002;DC-20 12

DC-200Z;DC-201z 5 ag |
/
3. DISASSEMBLY
e
Bonnet
Case
e@
Sub-chassis
(Power
Assembly,
Power
Switch
e
Control
Assembly
e
Tape
Counter
Remove
screws
(A)
(top
side),
screw
(B)
(rear
Assembly}
Pull
off
the
knobs
(VOLUME,
BALANCE,
Remove
Sub-chassis.
Remove
the
counter
belt.
side)
and
screws
(C)
(left
and
right
side).
Disconnect
C1
(ceramic
capacitor):
Remove
TREBLE
and
BASS).
Remove
nuts
(G)
(con-
Remove
screws
(H).
© Bottom Plate POWER knob. Remove screws (E) (rear side) trol shafts). e Tape Transport Unit
Remove
screws
(D)
(bottom
side).
and
screws
(F)
(upper
side).
Remove
Sub-chassis.
Remove
the
counter
belt
and REC joint D. Remove screws (I) (front
side) and screws (J) (bottom side).
Power switch assembly
(C)
POWER knob
Control assembly Tape transport unit
Power meter assembly
Power indicator assembly
Headphone jack
assembly
Bottom plate

elont—leler 4) a lent—lak P4
4. PARTS LOCATION
e Parts without part number cannot be supplied.
e The {\ 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 For your Parts Stock Control, the fast moving items are indicated with the marks
kk and *.
wk GENERALLY MOVES FASTER THAN *.
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View
* LED array
LN12256P1
Phone jack (PHONES)
RKN-091
* LED (POWER) rs ee
LN217RP
Knob
(BASS, TREBLE, BALANCE)
RAD-243
Knob eget
(TAPE, TUNER, PHONO)
RAC-388
Knob (VOLUME)
eS © us: RAA-395
:
we
Front
cover
*kx Door assembly RNL-835
RXX-451 (for DC-200Z) Knob (DOLBY NR)
RXX-455 (for DC-2012Z) a RXX-453
Knob (EJECT) i: : Knob
RAC-387 (TAPE SELECTOR)
Knob (REC} RAC-389
RAC-402
Knob
Front
panel
RNT-041 (for DC-200Z)
AY, FF, REW
nese
ee
RNT-042
(for
DC-201Z)
Knob (STOP) Tape counter
RAC-391 RAW-204
Knob (PAUSE) * LED (REC)
RAC-390 LN217RP
Rear Panel View
A Terminal
Bonnet
case
(DC
OUT
TURNTABLE)
RNA-632 RKN-090
Terminal (INPUT) jopnine
RKB-022 (SPEAKERS)
RKC-067
A Terminal
(DC OUT TUNER)
A Strain relief
REC-396
. AaAc power cord
Top View RDG-027
Ak Fuse
(T2.5A, FU501, FUG6G01)
REK-054
A\&& Fuse (T1.6A, FU701)
REK-069 Deck assembly
Lek
Fuse
———_—__————
rrr
(T1.25A,
FU801)
REK-070
A\*& Push switch (POWER)
RSA-063
Power assembly
Control assembly
%*&* Push switch assembly B
Headphone jack assembly RSG-157
Level control assembly

pc-2002Z;DC-2012
5. EXPLODED VIEW
Exterior e Parts without part number cannot be supplied.
e The /\ 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 For your Parts Stock Control, the fast moving items are indicated with the marks
kkk and *.
kk GENERALLY MOVES FASTER THAN *.
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Parts List of Exterior Mark No. Part No. Description
en me A 36. +=REC-396 Strain relief
Mark No. Part No. Description 37. REC-369 Fostarenibly.
15 BBZ30PO80F ZK Screw 3x 8
2. ATZ40PO80FZK Screw 4 x 8 REC-371 Cord binder
3. RNA-632 Bonnet case
4, BBZ30PO60F MC Screw 3 x 6 51. Eject plate
5. RBM-003 Nylon rivet 52. Power indicator assembly
53. Headphone jack assembly
6. RAW-204 Tape counter 54. Jack holder
7. RNT-041 Front panel (for DC-200Z) 55. Power meter assembly
RNT-042 Front panel (for DC-201Z)
8. RNL-835 Front cover 56. REC indicator assembly
9. RAD-243 Knob 57. Counter holder
(BALANCE, BASS, TREBLE) 58. Mechanism holder L
kk 10. RXX451 Door assembly (for DC-200Z) 59. Mechanism holder R
RXX455 Door assembly (for DC-201Z) 60. Control assembly
11, REC-355 Skid 61. Level control assembly
12. RAA-395 Knob (VOLUME) 62. Shield plate
13. RAC-386 Knob (POWER) 63. Power switch assembly
A\ek 14, REK-070 Fuse (T1.25A, FU801) 64. Switch holder
15. PMASOPO6GOFMC Screw 3 x 6 65. Connector assembly
L\ne 16. REK-054 Fuse (T2.5A, FU501, FU601) 66. Power assembly
A\ek 17, REK-069 Fuse (T1.6A, FU701) 67. Sub-chassis
18. CKDYF 473Z 50 Ceramic capacitor (C1) 68. Rear panel
19. RNE-513 UL cord clamper \ 69. Holder
20. RNL-838 Cassette plate 70. : Deck assembly
71, Chassis
21. REE-081 Shining paper 72. Bottom plate
22. RBH-750 Eject spring 73. Refer to pp. 11-14 Tape transport unit
23. RAC-387 Knob (EJECT)
24. RAC402 Knob (REC)
25. RAC-390 Knob
(PLAY, FF, REW, PAUSE)
26. RAC-391 Knob (STOP)
wk 27. REB-512 Counter belt
28. ATZ40P080FMC Screw 4 x 8
A * 29. RTT-367 Power transformer
(220/240V)
30. RAC-388 Knob
: (TAPE, TUNER, PHONO)
31. RBA-090 Screw with bar
32. RBH-934 REC joint D
33. RAC-389 Knob (TAPE SELECTOR)
34. RXX453 Knob (DOLBY NR)
A 35. RDG-027 AC power cord

Exterior

|
Tape
Transport
Unit
DC
-2002,0c-29
iP4

wl onto] eb 4) =) ert—len b.4
NOTES:
e Parts without part number cannot be supplied,
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.
e
For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
marks
xx
and x.
wx
GENERALLY
MOVES
FASTER
THAN
x.
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Parts
List
of
Tape
Transport
Unit
Mark’
No.
Part
Na;
Description
=
41,
RBK-166
Half
set
spring
Mark
No.
Part
No.
Description
42.
RNL-322
Cam
gear
1.
VCZ26PO90F
MC
Screw
2.6
x
9
43.
RBE-021
Washer
2.
RNK-995
Cylinder
44.
NK90FCr
Nut
3.
REB-447
O-ring
45.
RBF-030
Oil
stopper
4.
RNL-329
Piston
5.
RNL-291
Eject
lever
46,
RBH-890
Pinch
pressure
spring
kk
47.
=
=RXB-495
Pinch
arm
assembly
6.
YE25FUC
Washer
E-type
48.
YE20FUC
Washer
E-type
7.
RBH-871
Pocket
return
spring
*k
49.
RSN-034
Lever
switch
(S1)
8.
VCZ26PO60FMC
Screw
2.6
x
6
50.
RNL-334
Ratcher
holder
9.
PSZ20PO60FMC
Screw
2
x
6
10.
WA21D040D25
Washer
51.
RBH-888
Ratcher
spring
§2.
RBH-870
Ratchet
pin
kk
11.
RXB-377
Supply
reel
base
assembly
53.
RXB-577
Drive
arm
full
assembly
12.
RBE-057
Washer
54.
RXB-976
Drive
pulley
assembly
**k
13.
RXB-360
TU
reel
base
assembly
__
55.
YE1SFUC
Washer
E-type
14.
RBH-885
Detector
spring
15.
RBF-071
Washer
:
ak
56,
REB-455
Drive
belt
B
57.
RBH-876
Gear
lever
spring
A
16.
RNL-318
Detector
disk
58.
RNL-297
Gear
lever
A
17.
RED-194
Detector
felt
59.
RBH-877
Gear
lever
spring
B
18.
RNK-998
Idler
gear
60.
RNL-282
Gear
lever
B
19.
RNL-298
Action
lever
20.
RBH-873
Idler
pressure
spring
61.
RNL-296
Gear
lever
C
,
62.
RXB-576
Flywheel
assembly
21.
RBH-875
Action
lever
spring
wk
63.
REB-453
Capstan
belt
22.
RXB-579
idler
arm
full
assembly
wk
64.
REB-454
Drive
belt
A
wk
23.
RNL-337
TU
idler
65.
RNL-288
Cam
gear
24.
WA17D040D025
Washer
25.
RBH-874
HB
return
spring
66.
RBH-879
Trigger
spring
67.
RNL-280
Brake
plate
26.
RNL-050
Sub-head
base
68.
RBH-884
Action
plate
spring
*
27.
RPB-085
Erase
head
69.
REB-466
Brake
shoe
28.
PMZ20P130FMC
Screw
2x
13
70.
RNL811
FF
action
plate
29.
iMZ20Y120FMC
Screw
2
x
12
30.
PMZ20P120FMC
Screw
2
x
12
71.
RBH-916
Action
plate
spring
L
72.
RNL-810
REW
action
plate
wk
31.
RPB-118
REC/PB
head
73.
YS20FBT
Washer
C-type
32.
RBH-723
Head
adjust
spring
74,
RNL-275
Link
33.
RBH-782
HB
drive
spring
75.
RNL-274
Detector
lever
34.
RNL-057
Pocket
spring
L
35.
RNL439
Pocket
L
76.
RBH-886
Link
return
spring
77.
RNL-289
Stop
lever
36.
BBZ26PO80FZK
Screw
2.6x8
78.
RXB-670
Metal
holder
A
assembly
37.
RNL-440
Pocket
R
79.
RNL812
Joint
L
38.
RNL-058
Pocket
spring
R
80.
RNL-276
doint
R
39.
RNL-284
REC
detector
arm
40.
RBH-883
Detector
arm
spring
13

DC-2002;DC-2012
Mark No. Part No. Description Mark No. Part No. Description
81. RNL-831 Cam gear R 111. Side plate L assembly B
82. RNL-295 Pause lever 112. Idler arm assembly
83. RBH-880 Pause lever spring 113. Head base
84. RNL-281 Gear lever R 114. Connector assembly 6-P
85. RBH-881 Trigger spring R 115. Connector assembly 2-P
86. RNL-486 REC connection arm 116. Pocket frame B
87. RBH-889 Button return spring 117. Chassis assembly
88. RBH-909 Pause button spring 118. Connector socket 9-P
89. RNL-487 REC button 119. Flywheel receptacle
90. RNL-287 Function button 120, Thrust receptacle
91. RNL-279 Pause button 121. REC action plate
kk 92. RXM-088 Motor with pulley 122. REC action lever
xk 93. RSN-025 Spring switch (S3) 123. Plate
94. RNE-605 UL cord clamper D 124. Side plate R
95. PMA26PO040FMC Screw 2.6 x 4 y | - eee
96. RBH-882 REC return spring
97. PMZ20PO80FMC Screw 2x 8
*k 98. RSN-033 Lever switch (S2)
99. RLB-469 Collar
100. RNL-303 Lock plate
101. RBH-922 Lock plate spring
REC-371 Cord binder
14

6. ELECTRICAL PARTS LIST
NOTES:
e 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%).
5602 56 x 10' S61 ee ee ks RD“PS HEH
47kRQ 47x 10° BIB: bcbg BE RD%PS AB
0.52 ORS 8 ce on ee 2 be RN2H OREK
12 OV Om ob a eee Relate ecole RSIPOMG k
Ex. 2 When there are 3 effective digits (such as in high precision metal film resis-
tors).
5.62k2 562x110! 5621......... RN“SR BEAM F
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.
e For your Parts Stock Control, the fast moving items are indicated with the marks
kk and *,
xx GENERALLY MOVES FASTER THAN x.
This classification shall be adjusted by each distributor because
number , temperature, humidity, etc.
it depends on model
Miscellaneous Parts OTHERS
FUSES Mark Symbol & Description Part No.
L\ *& 11 Power transformer RTT-367
Mark __ Symbol & Dascription Part No. (220/240V)
/\eek — FUBO1, FU601 Fuse (T2.5A) REK-054 A AC power cord RDG-027
*e FUTON Fuse (T1.6A) REK-069 **& — Motor with pultey RXM-088
(\wee — FU8O1 Fuse (T1.25A) REK-070
*&k = REC/PB head RPB-118
* =~ Erase head RPB-085
P.c. BOARD ASSEMBLIES C1 Ceramic capacitor CKDYF 473Z 50 -
Mark Symbol & Description Part No.
7 Deck Assembly
Deck assembly Non supply
REC indicator assembly Non supply SEMICONDUCTORS
Power assembly Non supply
Control assembly Non supply Mark Symbol & Description Part No.
Level control assembly Non supply :
kk =§=0307 HA12045
Headphone jack assembly Non supply ** =~ 0101, A102, A201, A202 2S8C2240
Power switch assembly Non supply **k = =~=Q103—0107, Q203—A207, Q304, 2SC1740LN
Power indicator assembly Non supply Q305
Power meter assembly Non supply *k =—0303 2S8C1741
*k = Q301, A302 2S8C1740LN-S
SWITCHES (on the tape transport unit) wk 0306 2SA933LN
xk = §=6©0308 M5218L
Mark Symbol & Description Part No.
* D312 RD5.1EB2
kk
S11
Lever
switch
(PLAY)
RSN-034
(MTZ5.1B)
wk S2-__ Lever switch (FF) RSN-033 * 0301—D308, D310, D311, D313 182473
*k = §=$3 Spring switch (REC) RSN-025 * D101, D201 1K60AUF
15
COILS, FILTERS
Mark Symbol & Description
C111, C211
C316
C101, C201
RESISTORS
Mark Symbol & Description Part No.
L301 Oscillator coil RTD-032
L302 Line coil RTF-101
L101, L201 MPX filter RTF-138
L102, L202 Peaking coi! RTF-629
L103, L203 Trap coil RTF-152
SWITCHES
Mark Symbol & Description Part No.
wk = §301—S304
Push switch assembly RSG-158
(S301—S303: TAPE
SELECTOR, $304:
DOLBY NR)
wk =§=6$305 Slide switch RSH-048
(Recording/playback)
CAPACITORS
Mark Symbol & Description Part No. _
C122, C222 CEA R27M 50
C129, C229 CEA R33M 50
C123, C223 CEA R82M 50
C118, C125, C126, C130, C218, CEA 010M 50
C225, C226, C230, C310
C114, C124 CEA 2R2M 50
C106, C107, C110, C117, C128, CEA 100M 16
C206, C207, C210, C217, C228
C313, C314 CEA 220M 16
C302 CEA 4R7M 50
C109, C209, C315, C320, C321 CEA 330M 16
C103, C203, C113, C213, C303, ’ CEA 470M 16
C319
C116, C301, C311, C312 CEA 101M 16
C317, C318, C322 CEA 221M 16
C304 CEA 221M 10
C121, C221 CEANL 4R7M 50
C102, C112, C115, C202, C212,
C215
C307, C308
C309
C120, C220
C133, C233
C132, C232
C131, C231
C105, C205
C108, C208, C306
C124, C224
C119, C219
C305
C104, C204
C134, C234
C127, C227
C135, C235
CEANL 100M 16
CQMA 332K 50
CQMA 682K 50
CQMA 472J 50
CQMA 562J 50
CQMA 682J 50
CQMA 822J 50
CQMA 103J 50
CQMA 153J 50
CQMA 183J 50
CQMA 333J 50
CQPA 562J 100
CCPSL 220J 50
CCDSL 471K 50
CCDSL 271J 50
CCDSL 101K 500
Note: When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before. |
Part No.
CCDSL 271J 50
CKDYF 473Z 50
CQSA 471J 50
Mark Symbol & Description Part No.
* ~=V101, V102, V201, V202 RCP-223
Semifixed (22k-B)
* V103,V203 — Semifixed (150k-B) RCP-228
R101, R201 RDY%PM 753JNL
R102—R109, R113, R115-R117, RD’PMOOOS
R119, R120, R122, R202—R209,
R213, R215—-R217, R219, R220,
R222, R314
Other resistors RD1/6PM 000 J
OTHERS
Mark Symbol & Description Part No.
Shield case RNH-209
REC Indicator Assembly
LED
Mark Symbol & Description Part No.
* D401 (REC) LN217RP
Power Assembly
SEMICONDUCTORS
Mark Symbol & Description Part No.
Awe 705 $TK4171-28
wk 706 NJM4558DX
wk 0703 28C1740LN
**k ~~ Q704, Q707 2SA933LN
A\tee 0701, 0702 28D1276
{\ *% D701 RB-402LF-F
A *® = p702 RB-152LF-F
A\ * D705 (Triac) BCRGAM-8L
A\
*
D703,
D704
10E2FD
:
A *® p72 RD13FB3
A ® D713 MTZ15A
(RD15EB1)
A *® 9710 MTZ13B
(MTZ13C)
(RD13EB2)
(RD13EB3)
16

s= len s—jeler 4) 2] etek P4
Mark
Symbol
&
Description
Part
No.
OTHERS
i
Headphone
Jack
Assembly
Power
Meter
Assembly
A
®
0711
1SR35-100A
ie
ns
Mark
bol
&
D
t!
Part
No.
.
‘
¢
*
D501,
D503,
D601,
D603,D706,
182473
7
Symbol
Descibuon
=<.
baerNo
Mark
__
Symbol!
&
Description
PartNo,
SEMICONDUCTORS
.
|
D707,
D709
Terminal
(DC
OUT
TURNTABLE)
RKN-090
R1301,
R1401
RD%PM
151J
oa
‘ -
Mark
Symbol
&
De:
t
Part
No.
me
708
ROA
TER!
A
Terminal
(DC
OUT
TUNER)
RKN-089
R1302,
R1402
RDY%PM
181J
=
ee
men
are
Ne
(RD2.7EB2)
Terminal
(SPEAKERS)
RKC-067
Phone
jack
(PHONES)
RKN-091
kk
01601
BA4558
Terminal
(INPUT)
RKB-022
kk
Q1701,
Q1801
BA6124
COILS
Screw
RBA-089
Power
Switch
Assembly
*
=
11701—D1706,
D1801—D1806
LN12256P1
Heat
proof
river
RBM-013
(LED
array)
Mark
Symbol
&
Description
ceene:
Mark
Symbol
&
Description
Part
No.
RTH-003
oe
met
ree)’
+
Shi
enokeeal
Control
Assembly
A
$801
Push
switch
(POWER)
—-RSA-063
CAPACITORS
A
C801
Ceramic
capacitor
RCG-009
a
er
SEMICONDUCTORS
(0.01/AC250V)
Mark
Symbol
&
Description
Part
No.
\
CAPACITORS
:
.
Mick:
“Stine
ee
bacn
i
C1701,
C1801
CEA
010M
50
mbo
escription’
oO.
Mark
Symbol
&
Description
Part
No.
Ls
Rema
d
=
-
Power
Indicator
Assembly
C1702,
C1802
CEA
100M
16
:
*k
=§=0901,
01001
2SC1740LN
C715,
C716
Electrolytic
RCH-059
(4700/50)
(RCH-061)
LED
RESISTORS
C722
~
CEA
102M
35
SWITCHES
]
ipti
:
.
;
5
C713
CEA
471M
6R3
:
Mek
Symbols
Desciption
ESENG
Note:
When
ordering
resistors,
convert
the
resistance
value
c7i0
CEA
221M
16
Mark
Symbol
&
Description
Part
No.
*
1501
(POWER)
LN217RP
into
code
form,
and
then
rewrite
the
part
no.
as
before.
C712
CEA
221M
10
me,
ola
oe
108
Bee
ey,
Mark
Symbol
&
Description
Part
No.
C707
CEA
101M
50
Push
switch
assembly
B
C725
CEA
101M
35
(FUNCTION)
A
R1705,
R1805
RDY%LF
6805
C731
CEA
101M
25
Other
resistors
RD1/6PM
OOO
J
C514,.C614,
C704, C705,
C726
CEA
470M
25
CAPACITORS
C723
CEA
470M
16
:
;
C505,
C605
CEA
470M
10
Mark:
2Symbol
&
Description...
PartNo.
=.
|
—
,
ioe
Clee
Peep
|e
C905,
C1005
CEA
010M
50
C706, C708, C709,
C711
CEA
100M
50
902.
C1002
CEA
100M
50
ere)
Cem
enon
20
c904,
C1004
CEA
220M
25
7.
PACKING
C907,
C1007
CQMA
122K
50
°
C508,
C608
CEA
010M
50
C908,
C1008
COMA
562K
50
_
C502,
C602
CEANL
2R2M
50
Mark
No.
Part
No.
Description
C606,
Co0e
EOMA242).80
C909,
C1009
COMA
333K
50
1.
RHA-261
Side
pad
C507,
pe
COMA
822150
C910,
C1010
CQMA
124K
50
2.
RRE-065
Operating
instructions
Cee
er
aay
C906,
C1006
CCPSL
270J 50
3.
RHG-744
Packing
case
(DC-200Z)
C901,
C903,
C1001,
C1003
CCPSL
101J
50
C504,
C604
CCPSL
101J
50
C503,
C603
CKPYB
221K
50
C515,
C615
CKDYF
1032
50
RESISTORS
C701,
C702,
C714
CKDYF
223Z
50
C512,
C612
CKDYX
473M
25
Note:
When
ordering
resistors,
convert
the
resistance
value
into
code
form,
and then
rewrite
the
part
no.
as
before.
3
RESISTORS
Mark
Symbol
&
Description
Part
No.
—
Note:
When
ordering
resistors,
convert
the
resistance
value
*
~=VR1101-VR1103
RCV-116
into
code
form,
and
then
rewrite
the
part
no.
as
before.
Variable
resistor
assembly
(BASS,
TREBLE,
BALANCE)
Mark
Symbol
&
Description
Part
No.
R901,
R914,
R1001,
R1014
RD%PM
OOO
Oth
ist
RD1/6PM
OOOS
A
R721
Wire
wound
(0.22/2W
x
2)
RCN-051
reaps
R509,
R511,
R609,
R611,R704
RD%*LFOOOYS
i
—R706
:
evel
Control
Assembl
A
R722, R727,
R729
RDY%PMF
OOO
Level
Co
=
y
;
oa
A
zea:
ABUSING)
BEAR
SLY
Mark
Symbol
&
Description
Part
No.
R512—R517,
R612—R617,R701
RD“PM
OOS
*
VR1201
Variable
resistor
RCV-117
—R703,
R707,
R711,
R712,
R717.
(VOLUME)
:
—R720,
R723,
R724, R730,
R731
Other
resistors
RD1/6PM
GOO
J
aS
17
:
18

DC-2002Z;DC-20 12 2 | 3 | 4 5 6
8. P.C.BOARDS CONNECTION DIAGRAM |
A DECK ASSEMBLY
e308
G205
dior
9704
305
9301 0206 ai06. Q308 9108 4 9306
9204 a202 201 Qi01 ai02 Q104 9307 ee SSS 708
v201
v203
ViO3
v202
vio2
viod
TAPE
TRANSPORT
U
N
I
T
ERASE f i MOTOR WITH PULLEY
HEAD > ¥ RXM- 088
RPB-085 + =
: $3 : REC
ee] RSN-025
“FF
RSN - 033
S1: PLAY !
RSN-034 |
a
6
LCH
REC
REC/P.B INDICATOR
HEAD
ASSEMBLY
RPB-118
R CH 1
LEVEL
CONTROL
ASSEMBLY
CONTROL ASSEMBLY
19
4
2
3
4
5
6
Q703
POWER ASSEN
Q702 Q704
Q704 Q707_*

7, | - ee
POWER ASSEMBLY
Q702 Q704
Q703 Q704 Q707 Q705
SPEAKERS
T1 RTT -367
(at eee
HEADPHONE AC 220V
JACK
ASSEMBLY
50/60Hz
AC POWER CORD
RDG - 027
POWER SWITCH
ASSEMBLY
OT NSI7RE POWER
INDICATOR
ASSEMBLY
POWER METER
ASSEMBLY
BALANCE
SE anima aammanaaany seep PORo POSHBOI BOS
=""OH701, 1804 BAGI24 LNI2256P1(010DE ARRAY)
12

Dc-2002;DC-2012
External Appearance of Transistors and ICs
STK4171-2S
HA12045
M5218L
NJM4558DX
BA4558
BA6124 BCR6AM-8L
5 8
| 1 }
Index
t
i)
26
Equivalent circuit of STK4171-2S
———-—-0--0-— — — — — ees
---—-——-0-6---
2 6 6869
GND MUTING vee
2SA933LN
2SC1740LN
Type No
hre Lot No
c
2SC2240
2SC1741
Type No
Suffix
-Lot No
hre
2SD1276
10 t 14
OuT! OuT2 Vee id
at ee ee, tig a sae. Za.
8
IN2(+)
17
IN2(-)
10. BLOCK DIAGRAM
TAPE PB EQ AMP. DOLBY NR PRC
Q307 Gv:28,¢
FLAT AMP.
Gv: 40.2 dB
6.68 mV Gv: 7.8 dB
Qlol Qio2 Q104
PB A
REC/PB etme} ER) EK) scan nae <O
O REC
O
O ah
i oe
6.68 mV
MPX
FILTER
BIAS OSCILLATOR
A.L.C.( LIMITER ) MUTING GATE
Q103 aie | Qlo7
ERASE e
HEAD
© lie eames
POWER METER
POWER AMP.
peo
TUNER
TAPE
MUTING
GATE
:
|
Gv
oe
O
O
votume
[Q901
1
BALANCE
Q
TUNER
6 2
:
:
|
;
tT
G5
J
BASS TREBL
foe
R.CH
:
MUTING
CONTROL
a
ae
PHONO
TONE CONTRI
PROTECTION
Q703
aS
R.CH ae @) § ;
Q704 4
27. 28

10.
BLOCK
DIAGRAM
TAPE PB EQ AMP.
FLAT AMP.
Gv: 40.2 dB
6.68mV Gv : 7.8 dB
Qiol
Q102
Q104
aia
PB
Se
Ore
a
al
po
GS
O15
REC
.
O)
Lil
z
Woe
BIAS OSCILLATOR
A.L.C.
(
LIMITER
)
ERASE
HEAD
Q170)
TUNER
PHONO
PHONO EQ AMP.
Comaur
Gv :35.5dB
Q706 PHONO
MUTING CONTROL
sony
ae
27
POWER METER
OOOQEQE
TUNER
TAPE
MUTING
GATE
0 O
VOLUME
[
Qg90!
l
O O
DOLBY NR PROCESSOR
Q307 Gv:28dB
| DOLBY NR
:
MPX
FILTER
MUTING GATE
ye
POWER AMP.
Gv:43.5dB
li9v/en(45w)
BALANCE
ees
we)
28
TAPE
DECK
MUTING
CONTROL
REC AMP.
- rNORM : 7.6dB
Gv7CrO2 : 8.6dB
MUTING
[eroe
:
11.748
GATE
|}
|
2308
js
|
alos
®
i)
Ui
NORM
:
412.1
mv
aN
CrO2
:
462.4mv
i
METAL:
660.7
mv
Cr02 METAL
O O
oo te
MECHANISM
MODE
DETECTOR
SWITCHES
DC POWER SUPPLY CIRCUIT
Y PHONES
ie
5
|
—]
POWER
Hi
mn
|PAcoce:
||
anal
ZZLZ2
LZZ|
MOTOR
POWER
DC SUPPLY
[] TURN TABLE

1 2 3
9. SCHEMATIC DIAGRAM
DECK ASSEMBLY
Q307- 1/2
1
RIO6 C107
!
54k
HOG
Q107,
207
:
LINE
F
MUTING GATE ‘
POWER METER ASSEMBLY
a
ioe Q1701, 1801 : BAGI24 DI70i-~ 1706 1801 1806
Qisoi BA4558 LNi2256P1 (LED |ARRAY)
| Qisot
Qt708 COMPARATOR
Qi704
PIN
NO.
1 h~ 4] OFF, lot701 |01702 D1703|D1704 i
So ae de cat ay?
PPO" @ @" @ :
1
Sebi
Q103,
105,
203,205
:
LIMITER
bee
pp
oes
(ras
ee
ia
i
2
Q104,204
:FLAT
AMP.
Mies
;
QI701,
1801:
A
RES
2
a
101,102
201,202
pane
REC
LEVEL
AD
METER
DRIVER
Wen
apcuray
TAPE
PB
EQ.
AMP
Q307: DOLBY
NR
RPB-HB
PROCESSOR
Q106,
206:
RI702|
REC
MUTING
aif
18k
GATE
ieee
Pees
meer
As
Beh
ear
|
.
: x
D3I3 [o.9] rico2 “pyct70! Fire. wwe
17 RIT x
oe 70 15041 i {9 = 22k isOk
Y
cieoe|
|
be
Ircisoi = R180! aren f
#9 }
I ‘Rig02| |
? |
Ce)
ei
R CH
'
'
REC
Q301,302: BIAS OSCILLATOR [PLAY [OV ;
Q303
:
OSCILLATOR
SWITCH
[STOP
0.6V.
SSS:
athe
101,
102,
201,
202
28C2240
@308
M5218L
x
4
a
i
tL
Q103~
107,
203-~
207,
304,
305
D301-~
308,
310,
34,
313
(A
y
nie
|
33
2SC1740LN
$2473
x : lo + A Q301, 302 2SC1740LN-S DIO1,201 — 1KEOAUF
ye
|
Gia
Q303
2sci74ai
D312
RDS.1EB2
;
a
HEAD
T5308
:
i
@306
2SA933LN
or
MTZ5.1B
RPB-08S
1
:
XX)
:
Q307
HA12045
csi
3
.
.
:
RSG-158
L301
;
RTD-032
eek
ded det
fel
il
H
:
:
RSH
-
048
1302
:
RTF-404
‘
POWER
LIOl, 201: RTF~138 ViOi,201 : RCP—223 > INDICATOR
Li02,202
:
RTF-629
vi02,202
:
RCP-223
ASSEMBLY
Li03,203 : RTF-1#52 V103,203 : RCP-228 Di501 bas
LN2I7RP
_ . : N
| power) &) ae L CH | e
O
P55
=
-
o—
=
=
(oe
CATOR
-
———_—
fa:
|
D4
|p3
ps
|o7
|n6
joo
c2
ct
-
SPEAKERS
:
|
|
tape
transport
unit
}°*
[P*
JP?
[oh Jer
pr
|
}
|S
assemay
;
a
eApe
;
STOP.
CONTROL
ASSEMBLY
(2/2)
POWER
ASSEMBLY
v2
fut
_j
:
Nees
Q
sf
fd
——————
-
és
=
—d
RCH
| Pino PULLEY s3: REC Soe sire ie ea Suara | treace — + CH BASS
7 on $4: PLAY ve Q901 , 1001
|
RXM
ose
re
RSN-025
RSN
—034_
RSN-
033
[pao
EN2ITRP
J
'
BSctPAOLN
Q701,
702
:
VOLTAGE
sth
SSS | i 2.7k yi 42 REGULATCR D501
4
ON.
OFF
R901
y
Q901,1001:
R903
C902
7
18k
7k
NRUOIM
LOS":
TURN-
a
aa
A
or
i
R727
0.
bo
20
R725
DC
OUT
72w) 43
| TUNER J
+
Ri003 ci002
ik 10/50
URCV-H7
LEVEL
CONTROL
ASSEMBLY
SHOIY 1103(3-GANG):
RSG - 157
'
LCHE
TUNER [
rch ©
1
Q706:
PHONO £Q. AMP.
=L
CHS
a705
A\
2-CHANNEL
POWER
AMP.
TRCHS
INd
ING
IN2 IN2
(+)
(=)
GND
MUTING
Vee
OUT!
Veco
OUT2
VEE
GND
(-)
(+)
A
adil
3.4
5
6
7
8 9
1
4
12
13
14
15
46
17
48
TAIT
SST
Es
7s
ee
pla
apas
ise
eee
L
cH
@—w—FE
703
2SCi740LN
503
Q704,707
2SA933LN
an
—
220V
ARED
02
:
220p
e701,
9705
STK4171-
28
pT
I,
Jaros
aS
>
R798
:
2706
NJM4558DX
i
il
JA
AS
l D704 PB-402LF —-F
|
PHONO
arpa
"50
D702
PB-152LF—F
Pes
c506
C507
D703,704
iOE2FD
2400p 8200p
D705
BCREAM-
BL
A
FUBOI
>
REK~(
WS)
b& 2704
R719 BC7tS gS)
V4 R718 pees
39K
FES
‘370
C801:
RCG-O0
‘50 .
Hs
Bees
POWER
SWI
Q707:POWER ON/OFF
MUTING CONTROL
D501, 601, 503, 603,
1501,601 : RTH-O03 R721: RCN—OSi
706,707,709 1$2473
C7I5,716: RCH-O59 — FUSO!, 601: REK-054
D7i0 ~MTZi3B
C603,
or MTZi3C
D708 = RD2.7EB1 = : REK- 0
or
RDIZEB2
or.
ROZ_7EB2
SS
ROHT
OSE
ETO
BEKGOSS
R516
FUSO!
Q703,
704:
ek
REO!
C60Z
R734
or
RDIZEBS
DvI3
MTZISA
10k
12.5
DC
VOLTAGE
DETECTOR
‘
ik
D714
ISR35-100A
Gy
aap
isEBI
ae
D712 RDIZFB3
a SS —
1
2
3
4
9D
6
:
7

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on
—iele
ba)
@)
ors)
6
|
7
8
Zs
O1lz
The indicated semiconductors are representative ones only.
Other alternative semiconductors may be used and are
>
"4,
RESISTORS.
listed
in
the
parts
list.
Indicated in 2, %W, % W,+5% tolerance unless otherwise noted k; k&2,
M; MQ, (F); £1%, (G); £2%, (K); +10%, (M); +20% tolerance
|
NOTE:
2. CAPACITORS:
Indicated in capacity ({uF)/voltage (V) unless otherwise noted
Pp; pF. Indication without voltage is 50V except electrolytic capaci-
tor.
107,
207
:
LINE
3.
VOLTAGE
CURRENT.
A
MUTING
GATE
TL)
DC
voltage
(V)
at
no
input
signal
2
POWER
METER
ASSEMBLY
_
4.
OTHERS:
Q1701,1801
:
BAGI24
DI701~
1706
180170
1806
w=
Sionel
route.
@ ;,Adjusting point.
mark found on some component parts indicates the im-
Qi601
portance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
Q4704
‘
COMPARATOR
»
be
sure
to
use
parts
of
identical
designation.
2% marked capacitors and resistors have parts numbers.
aa
’
I
This
is
the
basic
schematic
diagram,
but
the
actual
circuit
may
~
vy
7
vary
due
to
improvements
in
design.
!
[&
@ @
@ @
SWITCHES:
=|
ted
sca
i
TAPE
TRANSPORT
UNIT
Qi601 BA4558 LNi2256P! (LED ARRAY) The
i
Q107
R146 an
54k e
RAT R148
22k 10k
0.0082
830g $303 $303
Qi704
TER
vio2
,
202:
Q1701,
1801:
RIZ05
Si:
PLAY
PLAY
—
STOP
REC
LEVEL
ADJ
s302
METER
DRIVER
A
ee
SecEE
FF—OFF
bar
:
Q307:
DOLBY
NR
L
0308
:
REC
AMP
-
:
AEE
:
.
:
RI601
S3
:
REC
ON—
OFF
Regs.
PROCESSOR
an
Gerc0s,
se
es
be
|
Sec
nSSENGLY
pals
C4
R70"
$301(2/2)
:
TAPE
SELECTOR
NORM
di
= ii :
1
{22
prcoe
theivor
Lae
$3024/4)
:
TAPE
SELECTOR
Cre
910 750 ti ee AI7O8 $303(4/4) | TAPE SELECTOR METAL
“9
-
NORM
~—
CrOz2
—
METAL
grec | fyece. $304(2/2): DOLBY NR ON-OFF
Ppovwot & Reo! +) LN | $305(8/8) : REC/PB SELECTOR RECORDING —PLAYBACK
ke ie (778 : VACANCY)
tS R232
CONTROL ASSEMBLY
SHO1 : FUNCTION SELECTOR TAPE
S02: FUNCTION SELECTOR TUNER
S1103 : FUNCTION SELECTOR PHONO
TAPE — TUNER — PHONO
POWER SWITCH ASSEMBLY
S801 : POWER ON — OFF
The underlined indicates the switch position.
my c225
+
BL202 SR243
Q307-2/2
Ey PHONES
A be oeeiaeet Q101, 102, 201, 202 2sc2240 Q308 = M52/8L
MUTINS:. CONTROL: Q403-~ 107, 203~ 207 304,305 —- D30i~ 308, 310, 314, 313. gor geal STR
| D310 2SC1740LN 1$2473 9 o—H
ok : 301,302 2SCI740LN-S 101,201 1KEOAUF iki —O—
ae Q303 2Sci744 D3i2 RD5.1EB2 150160 8
RSIG. 22 Q306 2SA933LN or MTZ5.1B
7416
40k ress
Q307 HA 12045
ov
_—_——— CO
Ov | S30i-~ 304 : RSG-158 L301 > RTD-032 e2
H.6v] S305 = RSH- 048 L302 : RTF-104 POWER
a
|
LiOl,
201:
RTF-138
Vi0l,201
:
RCP—223
INDICATOR
|
+ 1¢ | Li02,202 : RTF-629 vi02,202 : RCP-223 ASSEMBLY
| oss || Li03,203 : RTF-452 V103,203 : RCP- 228 Di504 =
eee
ae
pre
5
| power) & it Ect]
= Om = —— —— HG - —d— - 4 a - a = |
D4
|D3
ps
{oz
|o06
|p9
c2
ci
REC
ROC
ATER
ba
d
SPEAKERS
ASSEMB
oP
mh
me
om
o—-—>
CONTROL
ASSEMBLY
(2/2)
POWER
_ASSEMBLY
J
reco
9 Oe - =
Pe rec O oma Se 7 13-3 BR tne) ' | TREBLE UGH BASS Bass ——R CH TREBLE
-
Si:
PLAY
ee
D401
LN217RP
1
Q901
,
100i
RSN-O25
RSN
~034
REN
033
|
Feio4l
crocs
Q701,
702
:
VOLTAGE
—_——
-
jae
|
|
22
2SC1740LN
REGULATCR
| [eso 4001 : S + VR1101-~1103 : TURN-
TMUTING
GATE
R08
6988
RCV—
116
|
TABLE
4
DC OUT
!
=
ma
R727
Ht
R902
F
20
? TT Qu ‘oor 2 V asow
S
say
a
P
fvs te osor | [ET
VRHOT
rT, LOR Tate Lego tes
ke & co) R1Qd2 BALANCE 400k
it
+
H RI003 ci002
eu! | 1k 410/50
LCHy? 9708 f\ 2-CHANNEL POWER AMP. rRCH4
Ind INt IN2_— IN2
MUTING
(+) (=) GND OUTI Veo OUT2 Vee GND (-) (+)
#O dd i213 i617 18
Vee
FUBOI
T1250 A
s$8ot
POWER
RSA-063
AC220V
50/60Hz
AC POWER CORD
A
RSH
ROG
-
027
C512. FU8OI : REK-070
5.087
c80l:
RcG-009
al
|
POWER
SWITCH
ASSEMBLY
D501,601,503,603, | iso1,601: RTH-003 R721: RCN—O51 Q707:POWER ON/OFF
MT Z13B
MT ZI3ZC Book aoe vee } C7IS,716: RCH-O59 — FUSOI, 601: REK-054 MUTING CONTROL,
2DISEB2
or
RD2.7EB2
oP)
RGN
OPE
|
Sadek.
Reh
82
R516
FUSO!
Q703,
704:
1
RDIZEBS 10k T2.50 DC VOLTAGE DETECTOR
0713 MTZi5A O
SR35—100A or = RDISEBI
2DIZFBS
3 4 5 | 6 : 7 8 | 9 es

11. ADJUSTMENTS
11.1 MECHANICAL ADJUSTMENTS
Prior to Adjustment
Clean the both reel base, the capstan and the .
pinch roller with an alcohol moistened swab.
Pinch Roller Pressure Adjustment
1. Put the tape deck into the play back mode.
2. Gently push against the pinch roller arm with
the tension gauge and separate the pinch roller
slightly from the capstan.
3. Then the pinch roller back onto the capstan,
and read the value when the pinch roller
starts to rotate. If the reading fails to lie within
300g~500g, replace the pinch pressure spring.
Tension gauge
Pinch roller
Fig.
11-1
Pinch
roller
pressure
adjustment
Reel Base Torque Adjustment
Measure the torque with the torque meter
during playback, fast forward (FF) and rewind
(REW) modes. The measured values should normal-
ly lie within the allowable ranges listed in the
table 1.
If the measured values lie outside the relevant
ranges, replace the TU (take-up) reel base assembly
and/or supply reel base assembly, TU idler, or
drive arm full assembly.
Table 1
TU reel base
38 — 57g.cm
75 — 135g.cm
* 1.5 — 5g.cm
Supply ree! base
Playback mode
FF mode
REW mode
* 71.5 — 5g.cm
* 1.5 —5g.cm
75 — 135g.cm
* Denotes back tension torque.
DC-2002;DC-20 iz
REC Switch Adjustment
1. Depress REC button. REC action lever moves
to A direction. At this time, check that REC
switch
is
ON.
2. Depress STOP button. The REC action lever
moves slightly to B_ direction. At this time,
bend and adjust the REC action lever so that
a contact distance of REC switch is 0.2~
0.5mm.
NOTE:
Tape speed is increased by turning the semi-fixed resistor
clockwise, and decreased by turning counter-clockwise.
Tape Speed Adjustment
1. Connect fhe frequency counter to the DOL. L
terminal on the deck assembly.
2. Play back the 3kHz portion of the STD-301
test tape. At the beginning, the frequecny
should be lie within the 3000Hz~3010Hz
range, and may be adjusted by turning the
semi-fixed resistor located in the capstan motor
adjustment hole as shown in Fig. 11-2.
gee
Decrease
=@
Increase
)
_ _B=
a 0.2— 0.5mm
REC
action
plate
©
screwdriver
Fig.
11-2
Tape
speed
and
REC
switch
adjustment
29

‘al ott-lelehsalott-leh ban
Door Dampring Check and Adjustment
1. ‘Press the EJECT button without a cassette
loaded in the cassette compartment, and check
that the door opens smoothly without step-
wise movement, or rebounding after fully
opening.
2. If these conditions are not satisfied, adjust by
turning the adjustment screw in the head.,of
the cylinder.
REC Joint Check and Adjustment
1. Check that the gap F between the REC joint
and slide switch is 0 to 0.8mm when the trans-
port mechanism is stationary (and check that
the slide switch does not move).
2. Move the REC joint mechanism catching
position backwards if the gap F is greater than
1.0mm, but move it forwards if there is no gap
and the slide switch is moving.
3. If the prescribed gap F cannot be obtained by
the above adjustment, bend the hook section
of the REC joint with a pair of pliers by an
appropriate degree.
4.. Check that the slide switch is fully switched
when the transport mechanism is in recording
mode.
5. Also check that the mechanism spring switch
is shorted.
Slide switch
SZ
PA F
is
REC joint
0~0.3mm
Turn the screw counter clockwise if the
door opens stepwise in two stages.
Turn the screw clockwise if the door
boundes back after fully opening.
Ge
Screwdriver |
Fig. 11-3 Door damping check and adjustment
REC switch (Spring switch) i]
2
REC joint
hook section
KO SD)
REC joint catching position
Fig. 11-4. Rec joint check and adjustment
30