Pioneer DC-111Z User manual

WD) PIONEER
Setvice
PALEY ET
CIRCUIT
DESCRIPTIONS
ORDER NO.
ARP - 814-0
REPAIR & ADJUSTMENTS
STEREO CASSETTE TAPE DECK AMPLIFIER
C-1117
DC-1102
(Silver version of DC-1112Z)
e DC-111Z is the same as the DC-110Z except for the exterior design (color).
e Models DC-111Z and DC-110Z come in seven versions distinguishes as follows:
Applicable model
DC-111Z DC-110Z i
Oo AC 120V only U.S.A
Power requirement Destination
AC 220V (240V)* (Switchable) European continent
a idl
AC 240V (220V)* (Switchable) United Kingdom
AC 110V/120V/240V (Switchable) General market
4
AC 240V only Australia
AC 120V only Canada
AC 220V (240V)* (Switchable) West Gemany
* Change the primary wiring of the power transformer.
This service manual is applicable to the KU, HE, HB, S and YP types.
As to the HE, HB, S and YP types please refer to the page 46.
As to the KC type, please refer to the additional service manual (ARP-813).
As to the HEZ type, please refer to the additional service manual (ARP-815).
Ce manual d’instruction se refer au mode de réglage, en francais. (P36-P40)
Este manual de servicio trata del método adjuste escrito espanol. (P41-P45)
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
TEL: [phone], (B00) 237-0424
PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1,2740 Beveren, Belgium TEL: 03/775:28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: [phone]
SA: APR. 1985 Printed in Japan

DC-1112/1102
CONTENTS
1. SPECIFICATIONS .......... 00.00.00 cues 2
2. FRONT PANEL FACILITIES ................ 3
3. DISASSEMBLY ......... 0.0.0... 0c ee eee 4
4. PARTS LOCATION .............0000 eee uue 9
Bi “PACKING osca esac pectiaees tie Wain accra acne 11
6. EXPLODED VIEW ............ 000 eee eee 12
7. ELECTRICAL PARTS LIST ................. 18
8. P.C. BOARDS CONNECTION DIAGRAM ..... 21
1.
SPECIFICATIONS
AMPLIFIER SECTION
Continuous
Average
Power
Output
is
25
Watts*
per
channel,
min.,
at
8
ohms
from
40
Hertz
to
20,000
Hertz,
with
no
more
than
0.3%
total
harmonic
distortion.
*Measured
pursuant
to
the
Federal
Trade
Commission's
Trade
Regulation
rules
on
Power
Output
Claims
for
Amplifiers.
Continuous Power Output
40
to
20,000HZ
oo.
eceeeseseeeeceeeeeees
25W
+
25W(T.H.D.
0.3%
8
ohms}
TkHz(DIN)
oo...
--.
32
W
+
32
W(T.H.D.
1%
8
ohms}
1
kHz
(DIN
music
power)
...
..
45W
+
45
W(T.H.D.
1%
8
ohms}
Hum
and
Noise
(IHF,
short-circuited,
A
network)
PHONG?
eovescocteas
crattang
ian
Fader
scan
seaseavivl
Realeceoea
delet
72
dB
Hum
and
Noise
(DIN
continuous
Power/50
mV)
PHONO’
essential
Av
aces
adeat
dcbtecehees
sera
ed
ode
dolce
ob
68
dB/60
dB
Total
Harmonic
Distortion
(40
Hz
to
20,000
Hz,
8
ohms),
from
CD/VIDEO
12.5
Watts
per
channel
power
output
..........0000ececcces
No
more
than
0.2%
9. SCHEMATIC DIAGRAM..................0. 25
10. BLOCK DIAGRAM ................0000a ee 29
11. CIRCUIT DESCRIPTIONS ................. 30
12. ADJUSTMENTS ........... 0... cece ee ees 31
REGIAGE ik GaAs costar cde wey eects cima ed 36
BIUSTE” shsctig abe bat eit ile a teatereeehd Bete s 41
13.
FOR
HE,
HB,
S
AND
YP
TYPES...........
46
14. SAFETY INFORMATION .................. 48
Tape Deck Section
PSV
BRGITIS
wedi
sic
rexvhas
srceatn
bos
Cha
acces
cove
andleedca
Shee
4
track,
2-channel
stereo
Heads:
ict
ctcses
tetincesodeseeeaeh
et
“Hard
Permalloy’’
recording/
playback
head
x
1
“Ferrite”
erasing
head
x
1
Rajon ee scar aapnesieeuuic tacstonnes se rauceuepavuauasates feteetmteenees DC servo motor x 1
No more than 0.08% (WRMS)
No more than +0.20% (DIN)
Fast Winding Time ................000cc00eeee Approximately 115 seconds (C-60 tape)
Frequency Response
—20 dB recording:
Norimal tapes. vid ca sansscetge cisbuncsisgesate eho sohedaseatace aadork 35 to 13,000 Hz
Metal tapes: ni .sis caccteiesdcacaveasi ona sader ase cu eset erevel chougeeuee 35 to 15,000Hz
Signal-to-Noise Ratio
Dolby: NR OFB: aces csesaessaeegeseceteusane cdedddeccuse sin shacetasiees More than 55 dB
Noise Reduction Effect
Dolby NR Btype ON uu... eee More than 10 dB (at 5 kHz)
Furnished Parts
Operating Instructions .........0::cccccccccceccessccussecetsssseccesnsnusansesaceveesersinens 1
Miscellaneous
Power requirements
KU and KC models ......... cece cceseseccctsvescceeseessarausaeascees AC 120 V, 60 Hz
HE model ............. AC 220 V, 50/60Hz
HB and YP models AC 240 V, 50/60 Hz
S
and
S/G
models
..........
AC
110
V/120
V/220
V/240
V,
50/60
Hz
(switchable)
Power Consumption
KUO) rset estas eek cal pete eens be nae oi 199 W
KO MOdel: 0. oo: ester dnereadards deck idbaedd cds iantaacaidqevea eg tietaceeacde ees 199 W
HE, HB, and YP models . . 270 W
SANG: S/GiMOdels 35.6035) eevee ates A ettacs Ses WEED douse dais tect hieste 199 W
DMCS:
6
cocse
act
daon
vv
ciserceven
nn
Shasaveesawcdes
420(W)
x
188(H)
x
224
(D)
mm
16-9/16(W) x 7-6/16(H) x 8-13/16(D) in
Weight (without package) ...............cccccceeeeseeseeeecececseeraus 5.5 kg (12 Ib 2 oz)

QUESTIONNAIRE MODEL
One Model per questionnaire
Dear Servicer,
Thank you for your cooperation in the post-sale service of Pioneer products.
This questionnaire is used as a tool to improve the serviceability of our products and service manuals.
Please evaluate this model and service manual by answering the following questions. Your ideas may be
realized in our future products. Your answers will be appreciated. Thank you.
PIONEER ELECTRONIC CORP.
T. Nakagawa, Manager, Service Section, International Division
1. SERVICING EVALUATION Circle applicable number: Good Fair Poor
Disassembly /Re-assembly:
b. Circuit Checks: 1 gS 8 4 8G
c. Replacement of Parts: 1 2 3 *4 *5
d. Adjustment (s): 1 2. 8 ¥4 5
* If (4) or (5) was circled, please be specific.

e. Your advice, opinion or ideas related to servicing this product.
SERVICE MANUAL EVALUATION
Circuit & Mechanism Description
Circuit Diagram
OTHER
Please describe other areas of servicing which you may find difficult.
Completed by :
Company Name :
Address :
City/State/Zip :
Please
send
this
form
filled
to
the
distributor
in
your
country.

2. FRONT PANEL FACILITIES
@ POWER indicator
@ POWER switch
@ HEADPHONES jack
@ GRAPHIC EQUALIZER controls
By operating these five controls, equalization effects can be added to program
source or tape playback sounds.
@ BALANCE control
@ FUNCTION switches
TAPE ( 00 ): Push when playing back tapes.
CD/VIDEO ( 0° ): Push when listening to a component connected to the
CD/VIDEO terminals.
DC-1112/110Z
TUNER ( * }: Push when listening to broadcasts on the tuner.
PHONO ( @ ): Push when playing records on the turntable.
VOLUME control
REC switch ( © )
PLAY switch ( > }
REW switch ( < )
FF switch ( > )
e@ee86 0 8
PAUSE switch ( 0 )
@ STOP/ EJECT switch ( ~ )
@ TAPE COUNTER
@ RESET button
Push this button to reset the tape counter display to 000.
@ REC indicator
This lights during the recording mode.
@ *DOLBY NR switch
Push this switch to ON when recording with the built-in Dolby noise reduction
system (B type), and when playing back tapes which have been
recorded using the system.
aia h 1 hhh tha TA AAAS AUT A TATA TATA
*Noise Reduction manufactured under ticense from Dolby Laboratories Licens-
ing Corporation.
“Dolby” and the double-D symbol are trademarks of the Dolby Laboratories
Licensing Corporation.
Iai 1h ih 11h 1A ThA AA TAA AAA AAA ATA ATA AACA TOT

DC-1112/110Z
3. DISASSEMBLY
Cassette Replacement Procedures
1.
2.
3.
4
Remove 7 pieces of screw dd).
Remove Bonnet case.
Remove 2 pieces of screw Q) and | piece of nut Q).
Push the claw at the bottom of chassis, remove the
Front panel assembly, and pull out toward you.
Remove the LED assembly (A) and (B) from the
Front panel assembly.
Remove 6 pieces of screw GB). and enable the Power
amplifier assembly to move upward. (See Fig. 3-2)
Front panel ——____
assembly
Knob {VOLUME}
ge
10.
Fig. 3-1
Remove connectors J7, J11 and J21 of the wiring
coming out of the Tape transport unit. (Separate the
Front panel assembly from the main body.)
Open the Cassette door. (See Fig. 3-3)
Remove 4 pieces of screw (4).
Remove Counter belt from Tape counter, and hook
onto the Tape transport unit.
Remove the Tape transport unit from the Front
panel assembly.
LED assembly (A)

DC-1112/110Z
Power amplifier assembly
Connector J21 SS
ea Connector J11
eae Connector J7
/
Tape transport unit
Fig. 3-2
Cassette door
Front
panel
assem
bly
Tape transport unit
Counter belt
Fig. 3-3

DC-1112/110Z
COMPONENT PARTS REPLACEMENT
PROCEDURES
Replacement of Motor
1. Remove lead wire of motor terminal. 8. While applying a Belt to the flywheel side, attach
2.
Remove
set
screw
(1)
and
detach
Motor
holder.
Motor
plate
to
Tape
transport
unit.
3.
Remove
2
set
screws
(2),
and
detach
the
Motor.
9.
Apply
Belt
to
driving
pulley
and
pulley.
4. Pull out Motor pulley from Motor. 10. Solder lead wire to motor terminal.
5. Attach Motor pulley to new motor. 11. Fasten securely head lead and control lead with
6. Adjust the height of Motor pulley. (see Fig. 3-4-1) binder.
7. Attach Motor to Motor holder. 12. Adjust the tape speed.
Leadwire
Tape transport unit
Motor holder
Motor pulley
Motor
Fig. 3-4

DC-1112/110Z
4. Apply belt to driving pulley and pulley.
Fasten securely head lead and control lead with
binder.
6. Adjust the tape speed.
Replacement of Belt
1.
Remove
set
screw
(1)
and
detach
Motor
holder
the
Tape
transport
unit.
2.
Replace
the
old
belt
with
a
new
one.
3.
While
applying
the
Belt
on
the
flywheel
side,
attach
Motor
holder
to
the
Tape
transport
unit.
my
Motor holder
Tape transport unit
Fig. 3-5

DC-1112/1102Z
Replacement of Head
1. Detach cassette knob. 7. Check the running of tape.
2. Remove head lead from head. 8. Perform azimuth adjustment.
3. Remove set screw qd) of head. 9. Perform bias adjustment.
4. Remove former head and install a new one.
5. Solder the head lead while taking precaution not to
touch the wirings.
6. Attach cassette knob.
Head lead wires
Cassette knob
REC/PB head Erase head
Erase head
\
Agta
te REC/PB head
Fig. 3-6

4. PARTS LOCATION
NOTES:
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 * * and *.
*&%* GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View (DC-111Z)
Knob (STOP/EJECT)
AAY-106
Knob (PAUSE)
Tape counter
AAW-140
% LED (REC)
AAY-105
AEL-388
Knob
(FF)
Bonnet
case
AAY-104
ANE-543
Knob
(REW)
AAY-103
Knob (PLAY)
AAY-102
Knob (REC) Knob (DOLBY NR)
AAY-101 AAY-099
*LED (POWER)
AEL-388 Knob (VOLUME)
AAB-412
Knob (POWER)
AAY-200
Phone Jack (PHONES)
AKN-049
Knob (FUNCTION)
AAY-098
* Variable resistor assembly Knob (BALANCE)
ACX-311 AAB-411
DC-1112/1102
Rear Panel View (DC-111Z)
Terminal (TUNER) Terminal (SPEAKERS)
AKP-083 AKE-109
A\AC power cord
Terminal (DC SUPPLY) ADG-073
AKN-034
Terminal
(PHONO, CD/VIDEO)
AKB-094
* Variable resistor (INPUT)
ACT-198
Top View (DC-1112Z)
#x* Fuse (2.5A,FU4,5)
AEK-123
** Fuse (1.6A,FU3)
AEK-121
Fuse holder assembly
A\ *&* Fuse (2A,FU1)
AEK-122
Power amplifier assembly
GWH-179
A\ x Power transformer (120V)
ATS-196
Complex
assembly
GWM-388
Switch assembly
* x Push switch (FUNCTION) * Variable resistor
SUJ6L4B2B2B2LF (VOLUME)
ACT-197
10

DC-1112/1102
5.
PACKING
6.
EXPLODED
VIEW
NOTES:
Mark
No.
Part
No.
Description
e
Parts
without
part
number
cannot
be
supplied.
1
AHA-400
Front
pad
e
The
A\
mark
found
on
some
component
parts
indicates
the
importance
of
the
2
AHA-401
Rear
pad
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
Bi
ke
designation.
4
AHE-527
Packing
case
for
DC-1112Z
e
For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
AHE-528 Packing case for DC-110Z inaene SS one
*&*& GENERALLY MOVES FASTER THAN *
This
classification
shall
be
adjusted
by
each
distributor
because
it
depends
on
model
5
ARB-679
Operating
instructions
number,
temperature,
humidity,
etc.
(English)
Parts
List
of
Exterior
(DC-111Z)
Regarding
DC-1102Z,
see
the
table
in
page
11.
Mark
No.
Part
No.
Description
Mark
No.
Part
No.
Description
1
GWH-179
Power
amplifier
assembly
xx
=
35
AEB-197
Counter
belt
2
GWM-388
Complex
assembly
36
AEC-847
Leg
assembly
*
3
ACX-311
Variable
resistor
assembly
A
37.
ADG-073
AC
power
cord
1
A
4
ATS-196
Power
transformer
(120V)
38
BBZ30PO80FZK
Screw
3x8
39 NKSOFUC Nut
A kk 5 ASG-539 Push switch (POWER)
A
kk
6
AEK-122
FU1
Fuse
(2A)
40
ABA-286
Séieyy
Ake
7
AEK-121
FU3
Fuse
(1.6A)
41
VMZ30PO60FMC
Screw
3x6
A
kk
8
AEK-123
FU4,5
Fuse
(2.5A)
42
BPZ30PO80FZK
Screw
3x8
9
AAW-140
Tape
counter
43.
PBZ20PO40FMC
Screw
2x4
44 VPZ30 PO80FMC Screw 3x8
10 ANZ-044 Damper assembly
11
AAB-411
Knob
(BALANCE)
100
Fuse
holder
Assembly
12
AAB-412
Knob
(VOLUME)
101
Switch
assembly
oi
Ree
Knob
(POWER)
102
Headphone
jack
assembly
1
AAY-098
Knob
(FUNCTION)
103
LED
assembly
(A)
104 LED assembly (B)
15 AAY-099 Knob (DOLBY NR)
16 AAY-101 Knob (REC)
17
AAY-102
Knob
(PLAY)
105
Tape
transport
unit
18
AAY-103
Knob
(REW)
106
Chassis
19
AAY-104
Knob
(FF)
107
Bottom
plate
108 Rear panel
Contrast
of
Miscellaneous
parts.
20.
AAY-105
Knob
(PAUSE)
109
Heat
sink
holder
21 AAY-106 Knob (STOP/EJECT)
Key
No.
Symbol
&
Description
DO111z
|
pe-rt0z
|
Remarks
23.
ANM-888
Front
panel
111
Damper
holder
24
ANR-964
Door
(L)
112
REC
lever
16
|
Knob
A
(REC)
AAY-101
AAY-085
113
REC
base
17
|
Knob
B
(PLAY)
AAY-102
AAY-086
ei
eae
PTA
Mae
2
18
Knob
C
(REW)
AAY-103 AAY-087
19
|
Knob
D
(FF)
AAY-104 AAY-088
27
ANZ-032
POWER
panel
115
Switch
barrier
20
|
Knob
E
(PAUSE)
AAY-105
AAY-089
5
ANZ-037
Deck
panel
116
Clamp
plate
21
‘|
Knob
F
(STOP/EJECT)
AAY-106
AAY-090
ANZ:086
Amp
panel
23
Front
panel
assembly
ANM-888
ANM-949
26
Name
panel
ANZ-039
ANZ-043
30
AAX-426
Shine
paper
Deck
panel
ANZ-037
ANZ-042
31
ABH-156
REC
spring
Amp
panel
ANZ-055
ANZ-056
32
ABH-147
Coiled
spring
33 ABH-149 Rod
34 ABK-012 Keep plate
11
12

DC-1112/1102Z
Exterior

N fe)
o
bo
™~s
N c
c =
1
O
OQ
Tape Transport Unit

\
;
1
|
Parts List of Tape Transport Unit
Mark
x*
kk
kk
xn
xk
xk
Part No.
AXV-087
AXT-007
AXW-034
AXV-064
AXS-078
AXV-088
AXS-079
AXP-037
AXV-089
AXS-080
AXP-038
AXP-039
AXS-081
AXV-090
AXS-082
AXS-083
AXV-091
AXS-099
AXV-092
AXV-093
AXS-084
AXS-085
AXS-086
AXV-094
AXS-087
AXS-088
AXP-040
AXV-095
AXS-089
AXS-091
AXS-092
AXS-093
AXV-096
AXW-035
AXW-036
AXP-041
AXS-101
AXP-042
AXV-104
AXS-094
AXS-095
AXV-098
AXS-096
NOTES:
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
marks * * and * .
*&* GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Description
Torsion spring
Bush
Felt
Compression spring
Head base
Torsion spring
FR arm
P idler assembly
Torsion spring
Reset lever
T reel assembly
S reel assembly
FR release lever
Torsion spring
P release lever
PL plate
Torsion spring
FR plate
S brake spring
Torsion spring
F idler gear
Sensor cam
AS gear
Cassette holder
Eject cam
Latch lever
Pinch arm assembly
Torsion spring
SE lever
FF lever
REW lever
PL lever B
Torsion spring
Thrust receptacle
Belt
Flywheel assembly
Motor pulley
FR idler arm assembly
Torsion spring
Assist gear A
Assist gear B
Torsion spring
P cam lever
CR cam lever
Stock Control, the fast moving items are indicated with the
Mark No. Part No. Description
46 Axv-099 Torsion spring
47 AXS-106 FR start lever
48 AXV-100 Torsion spring
49 AXv-101 Torsion spring
50 AXV-102 Torsion spring
51 AXS-098 Interlock plate
52 AXS-090 Pause lever
53 AXS-100 REC lever
54 AXV-103 Lock pin
55 BD2Z26PO50FMC Screw 2.6x5
56 BTZ20PO80FMC Screw 2x8
57 BMZ20P100FMC Screw 2x10
58 PTZ26PO60FMC Screw 2.6xX6
BOS “eA AR aa 2 OS Ase.
60 BTZ26PO60FMC Screw 2.6x6
61 PMA26PO40FMC Screw 2.64
62 PDZ26PO40FMC Screw 2.6x4
63 NA20FMC Nut M2
64 WA16D040D020 Washer 1.6x4x0.2
65 WA21D040D030 Washer 2.1x4x0.3
xx 66 AXN-031 REC/PB head
x 67 AXN-032 Erase head
xx 68 AXN-023 Motor
xx 69 AXN-024 Spring switch (S12, METAL)
xk*e = 70 AXN-025 Spring switch (S11, MUTE)
71 AXS-102 REC link lever
72°
AXV-106
Tension
spring
101 Button shaft
102 Grounding lug
103 Chassis
104
105 Gear holder
106 Motor holder
107 FR S lever
108 Protector
109 PL start lever
110 RS W lever
111 REC protector
112 REC change plate
113 Lug
114 Cord fixer
115 Wire tie
116 Lug terminal
17
7. ELECTRICAL PARTS LIST
NOTES:
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 iinaris RD%‘%PS BOM J
47kQ 47 x 10° 473...., RD%‘%PS AMG J
0.52 ORS? oi ores BGS BAS hel oa oe RN2H K
12 O10 sn eG ene ee ae eee RSiIP GWM K
Ex. 2 When there are 3 effective digits (such as in high precision metal film
resistors).
5.62k2 562 x 10! 5621 .... RN%SR BOQW F
e
The
4,
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 ** and * .
*%* GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on
model number, temperature, humidity, etc.
Miscellaneous Parts
P.C. BOARD ASSEMBLIES
Complex Assembly (GWM-388)
SEMICONDUCTORS
Mark Symbol & Description Part No. Mark Symbol & Description Part No.
Power amplifier assembly GWH-179 xx 10701, 1C702 BA3812L
Complex
assembly
GWM-388
xx
10401
HA12045
Switch Assembly Non supply xx 10501 M5218L
Headphone
jack
assembly
Non
supply
xx
=1C601
M5218P
Fuse
holder
assembly
Non
supply
xx
1C301
M5220L
LED assembly (B) Non supply
LED assembly (A) Non supply x* §='Q842 DTA143ES
(RN2201)
SWITCH
**
0810,
0841
DTC124ES
ee (RN1203)
Mark
Symbol
&
Description
Part
No.
eke
Q801
2SA933S
4. x S1 Push switch (POWER) ASG-539 (2SA1048)
Q408, 0409, 0501, Q502, (2SC2458)
Mark Symbol & Description Part No. Q505, Q506, 0846
A ok T1 Power transformer ATS-196 we = 0843 2SC2603
(AC120V) (2SC2458)
xx 0844, 0845 2$D438
RESISTOR
*x*
=§=Q301,
0302
2SC2878
Mark
Symbol
&
Description
Part
No.
x
D833
RD5.6EB
: : : (HZ5.6EB)
* VR1 Variable resistor assembly ACX-311 * D401, D402, D808, D822, 188131
(GRAPHIC EQUALIZER) D840—D843
FUSES
SWITCHES
Mark Symbol & Description Part No.
Mark Symbol & Description Part No.
&
x
FU4,
FUS
Fuse
(2.5A)
AEK-123
,
d
4. &* FUL Fuse (2A) AEK-122 x* = §=S401 Slide switch ASH-105
A, *&* FU3 Fuse (1.6A) AEK-121 (REC/PB)
*x* $701 Push switch SUJ6L4B2B2B2LF
(FUNCTION)
OTHERS
Mark Symbol & Description Part No.
A AC Power cord ADG-073
A C1 Ceramic capacitor ACG-502
18
Mark Ss
COILS AND
Mark___ Sy
T8
CAPACITOR
c8

COILS AND TRANSFORMERS Mark Symbol! & Description Part No. Headphone Jack Assembly
Mark Symbol! & Description Part No. C717, C718 CKCYX153M25 eters Mark Symbol and Description Part No.
F401, F402 MPX filter ATF-158 (CKDYX153M25) C105, C106 CCCSL470J50
L801 Inductor ATH-094 C707, C208 CKCYX183M25 Mark Symbol & Description Part No. (CCDSL470J50)
L501, L502 Inductor ATH-117 (CKDYX183M25)
1401, 1402 Trap coil ATM-031 C703, C704 CKCYX393M25 R829, R830 RD1/2PM331 J C101, C102 CCCSL101J50
L503, L504 Trap coil ATM-032 (CKDYX393M25) (CCDSL101J50)
OTHERS C119 CEASR47M100
T801 Oscillator transformer ATX-036 C713, C714 ae Mark Symbol. & Descripucn park No. C113, C115, C116 CEAS100M50
( } C107, C108 CEAS101M10
CAPACITORS C806, C808 CQMA153J50 Phone jack (PHONES) AKN-049
C503, C504 CQMA182J50
eee Syania a ensane ae C109, C110, C118 CEAS101M25
ar rele escupien an No. C421, C422 CQMA183J50 LED Assembly (A) C114 CEAS101M50
C804 Polypropylene ACE-133 SEMICONDUCTOR C103, C104 CEAS2R2M50
(1500p/630V) a oe O07 2908; PONibe2 350 C126, C127 CEAS330M25
C723, C724 Ceramic ACG-028 pales , cain bawanasee Mark Symbol & Description Part No. C130 CEAS332M25
(330p/50V) D828 LED (REC AEL-388
C417, C418 Electrolytic ACH-387 pednocadec COMASS 2200 i (BEE) C111, C112, C124, C125 CEAS470M25 |
C511, C512 COMA393J50 |
(0.27/50V) C133 CEAS470M50
bra Bara LED Assembly (B) C117 CEAS471M6
C419, C420 Electrolytic ACH-388 COMA Fi edn) SEMICONDUCTOR C120, C121 CKCYF473250
C309, C310 COMA562J50 lexpyra7azeGl
(0.82/50V) C613, C614 CQMA822J50 Mark Symbol & Description Part No.
C305, C306, C605—C608 CCCSL101J50
D827 LED (POWER) AEL-388 RESISTORS
38)
(CCDSL101
J50)
*
C802,
C803
CCCSL101
K500
RESISTORS
.
Power
Amplifier
Assembly
(GWH-179)
re : , NOTE: When ordering resistors, convert the resistance value
(CCDSL101K500) NOTE: When ordering resistors, convert the resistance value 8
into code form, and then rewrite the part no. as before.
Part No. into code form, and then rewrite the part no. as before. SEMICONDUCTORS
BA3812L C403, C404, C429, C430 CCCSL470J50 mask eae ‘i ey Mark Symbol & Description Part No.
Mark Symbol & D ipti Part No. ar’ ymbol & Description art No. ,
HA12045
Ree
hia
ese
eli
Yoo
So
Secupton
£
A
R129,
R130
RD1/2PMFOO
OJ
M5218L
as,
CEASAATRIEO
*
VR701
Variable
(BALANCE)
—
ACT-057
A
ee
1101
STK4141-2S
R133,
R137,
R138
RD1/2PMOOQS
M5218P
peeioe
CEASHEBRICG
*
VR7O2
Variable
(VOLUME)
ACT-197
we
10102,
1C103
MPC78M12H
A
R125,
R126,
R141,
R142,
RD1/4PMFOOQSJ
M5220L
'
*
VR6O1
Variable
(INPUT)
ACT-198
xe
=
0104
2SB834
R134,
R118, R119,
R120,
R136
i-fi ** §=§Q101—0103 2SC1740S
DTA143ES
C303,
C304, C423, C424.
CEASO10M50
*
VR841,
VR842
pea
fixed
VRTB6VS224
(28€2603)
R124
RS1LMF681J
eae
he
ae
aie
i
eas
sh
*
VR301,
VR302, VR5O1,
VRTB6VS223
R131
RS2LMF221J
RN1203
C425,
C426,
C501,
C502.
pecan
V
Bb
O2
caenienneae
2k
ee
Spastape
oe
Reeves
Dohoese
C519, C520, C701,
aoe
Bese
BDI
ier
Me
oie
ae
A
peti
an
Aldea
2SA1048 C727, C728, C814 ; R319, R320 RD1/4PM105J * D105 RD13EB Other resistors RD1/4PMOOQJ
) : aia Other resistors RD1/8PMO Og (HZ13EB)
A * D103, D104, D107—D110 $5566 OTHERS
28C1740S
C453,
C725,
C726
CEAS101M16
OTHERS
(112)
we
(2SC2458) C401, C402, C405, C406, CEAS2R2M50 a5 3 Mark Symbol & Description Part No.
Rees
C427,
C428,
C452,
C603,
C604 Mark
Symbel:6.
Description
paren:
*
D102
1$2471
Terminal
(SPEAKERS)
AKE-109
cee
Se
lpenee
CEAS221M16
Terminal
(PHONO,
CD/VIDEO)
AKB-094
Terminal
(DC
SUPPLY)
AKN-034
)
RELAY
Terminal
(TO
TUNER)
AKP-083
C307,
C308,
C505,
C506
CEAS330M16
F
S
ABA-271
250438
C415,
C416
CEAS4R7M50
Switch
Assembly
Mark
Symbol
&
Descripti
ane
AEC-940
ar mbo escription Part No. eat proof rivet -
eee
C609,
C610
CEAS470M10
SWITCHES
Y P
ane
:
:
C351, C352,
C651,
C652,
CEAS470M1
oat
*
*
RY101
Rela
ASR-
(HZ5.6EB)
C751,
C809.
C810
§
Mark
Symbol
&
Description
Part
No.
:
eA
Screw
3X6
PBZ30PO60FMC
188131
i
** $902 Push switch (DOLBY NR) SUJL2SF COIL
C715, C716 CKCYB182K50 — Fuse Holder Assembly
cee (CKDYB182K50) RESISTORS Mark Symbol & Description Part No. acide
;
ees
L103,
L104
AF
choke
coil
ATH-053
RES|
Part
No.
Mark
Symbol
&
Descripti
P
:
ipti
——
C711,
C712
CKCYB392K50
yme
eseription
art
No
CAPACITORS
Mark
Symbol
&
Description
Part
No.
ASH-105
(CKDYB392K50)
pica
RDI/BPMI72)
Mark
Symbol
&
Description
Part
No.
R140
Carbon
composition
—
ACN-209
R822
RD1/8PM622J
(2.2M
1/2W)
C301,
C302
CKCYB471K50
C131,
C132
Ceramic
ACG-019
SUJ6L4B2B2B2LF
(CKDYB471 K50} (0.01/AC150V)
C521—C524 CKCYB681K50 C128, C129 Electrolytic ACH-249
(CKDYB681 K50} (3300/42V)
C721,
C722
CKCYB682K50
(CKDYB682K50)
18
193
20

DC-1112/1102Z
8. P.C. BOARDS CONNECTION DIAGRAM
A COMPLEX ASSEMBLY (GWM- 388)
1¢501 Q506 846 845 a844
160! Ic401 9502 0843 saz
aso 0841
505 0405 0406 a8io
9303 0402 ‘e761
301 Q401 Q404
9301 9302 az0q_ IC 2403 _a409 9408 so! 1C702
VR502 VR5OI VREOI
VR842 VR841
vR702 VR302-VR301 UR70I
SD/ VID “REC LEVEL
$l2 METAL
AXN-024
REC/PB HEAD
AXN O31
ERASE HEAD
AXN-032
ee
47716"
c3i2, 6310
beh 10/25. 5600p.
3514 Hid j
47/16 R314
y2.2k 6
cB
022
i
1C301 R305 €303 C30
1 T=, 100k 1750. 4700)
50 4%
COMPLEX ASSEMBLY
1¢301 M5220L
IC40l HAI2045
IC5O! M5218L
IC60l M5218P
Ic701,IC702 BA38I2L
Q301,Q302 2S8C2878
Q303,Q304,
Q401 — 9406,
Q408 ,Q409 2SCI740S (2SC2458)
Q501, Q502,
Q505,Q506,
Qsol 2SA933S(2SA1048)
Q810,Q841 OTCI24ES(RNIZO3)
Q842 OTAI43ES(RN2201)
Q843 2SC 2603(2S8C2458)
Q844,0845 280438
Q846 2SCI740S (2SC 2458)
D401 ,0402,0808,
0822,0840-p84355!5!
0833 RDS.6EB(HZ5.6EB)
21 1 ?
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VARIABLE RESISTOR
ASSEMBLY
6

Ic70l
(C702
SC 2458)
Al048)
NI203)
N2201)
C2458)
SC 2458)
5.6EB)
POWER AMP ASSEMBLY (GWH- 179)
OC SUPPLY
LED ASSEMBLY (A)
SWITCH ASSEMBLY
LED ASSEMBLY (B)
0827
AEL-388
v
VARIABLE RESISTOR
ASSEMBLY
6
IC 101
Ic 102
Ic 103
TO TUNER
Qio2 Qiol
Q103
Q104
10
TO SPEAKERS
11
IC10l
1C102 ,IC103
QIOlI-Q103
Q104
DIO1
dIOo2
0103,0104,
DIO7-DIIO
DIOS
D106
eet ge ees
|
FUSE HOLDER ASSEMBLY
As!
uti PUSH SWITCH
(POWER ) ASG - 541
{
~~
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|
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{ ACG-502 |
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240V) or 2
@T(HB |TYPE)
rey
i
a
6 ; HE UP ES
PHONE JACK (PHONES)
AKN-049
'
Ect noo a
q Ti POWER TRANSFORMER
ATS -196 (120V}
FUI AEK-O3I(HE TYPE) |
AEK-507(HB TYPE) |
saa AC I20V
R104 ACN-209 ae OHz
AC POWER CORD
! ADG-073
10
11
12
POWER AMP ASSEMBLY
STK4I41-28
MPC 78MI2H
2SC 1740S (282603)
288834
KZL150
1S2471
$5566 (IIE2)
ROISEB(HZI3EB)
3D4B41
12

9. SCHEMATIC DIAGRAM
COMPLEX ASSEMBLY GwM -388
=
0401,0402
ea
-
=
_
“=,
=
_
FLAT AMP
0803
-
2405+
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505,506
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as
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DOLBY
NR
PROCESSOR
REC
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REC
AMP
REC
EQ
SELECTOR
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PB
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pa
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=
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2
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C723
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ACH -387
ACH- 388
ACG-028
ACE -133
ATF- 158
ATM- 034
ATH- 117
ATM- 032
ATH -094 !
ATX - 036
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POWER AMPLIFIER ASSEMBLY GWH-179
—
veo A
1. RESISTORS:
Indicated in 2, 1/4W and 1/8W. +5% tolerance unless otherwise
noted k; k, M; MO, (F); 1%, (G): +2%, (K); +10%, (M); +20% tolerance
2. CAPACITORS:
Indicated in capacity (jF)/voltage (V) unless otherwise noted p: pF.
Indication without voltage is SOV except electrolytic capacitor.
3. VOLTAGE, CURRENT:
VW); Signal voltage at 25W + 25W, 8M output (1 kHz)
77: DC voltage (V) at no input signal Value in ( ) is DC voltage at
rated power.
<SmA; OC current at no input signal
4. OTHERS:
> : Signal route.
; Adjusting point,
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.
> marked capacitors and resistors have parts unmbers.
C101 2-CHANNEL POWER AMP
HEADPHONE JACK ASSEMBLY
Phone jack
(PHONES?
AKN -049
(ermvennw]
R20 18 cna
* 100/59
40%
VR702-1
400K
VOLUME
VOLUME
crea
Bove
R708
i ‘470
5
The R384 R137 A, R135
cui S30 8H 2 A ae!
es
L
7
SPEAKERS
[a wren
al
| FU! AEK~122
+A
Rao $ R140 ACN-209
22M
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7
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0-073
AC120V
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fr eet = = =
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Dog pacts ob
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1 Dt 1 il FUSE HOLDER ASSEMBLY
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+--+ 4 2
cms xeiee Sed oe es ; r .
| 10/50 2 FF3sooraz 28
#3 | 1
| 250maiMaxi Avr
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-- ! cer 3 a8 30 A
To i 33/25 47 3300/25 |
es
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ae = ASG-54t
KP- 09
ARP OSs be Duca Avrs power TRANSFORMER (POWER)
A ATS ~196
— 40 post aann 1
0104, 1102, 103° >t 4 f 1 eww
0 (wEUTRAL
en VOLTAGE REGULATOR Ares hy 1G Ch aieees
pin 16a ¢ :
. Ic tot STK 4141-25 D101 KZL150 131,c132 ACG- 019 2
1C102,1C103 wPC78M12H 0102 1s2471 C128,C129 © ACH -249
D103,
D104,
|
Q101-@103—-2sc1740s 0107-0110 = $5566 (11E2) L103, L104. ATH- 053 Hl |
(28C2603) 0105 RDI3EB(HZI3EB) ‘
Q104 2SB834 D106 304B44 RYtO1 ASR-111 '
Fu3 AEK- 121 5) Ve
FU4,FUS AEK- 123 A !
= = - iveite ce oe 4
5. SWITCHES:
VARIABLE RESISTOR ASSEMBLY
- See | OUTSIDE OF P.C.BOARDS|
1 S1: POWER ON—OFF
TAPE TRANSPORT UNIT]
oe eee ee ae S11: MUTE
a a) fs la W i S12: TAPE TYPE METAL
a? it 1
it fit '
+ mo i [COMPLEX ASSEMBLY
vo to :
E va E vi = ; S401: REC/PB SELECTOR REC—PLAY
Sal Beeps eae Dra me} $701: FUNCTION
$701-1: TAPE ON-OFF
$701-2: CD/VIDEO ON—OFF
$701-3: TUNER OFF
i $701-4: PHONO
| THI INDERLII
[SWITCH ASSEMBLY — UNDERLINED INDICATES THE SWITCH POSITION
8902: DOLBY NR ON ocr This is the basic schematic diagram, but the actual circuit may vary due to
‘QFE improvements in design.
BA3812L
HA12045
M5218L
M5220L
M5218P
isa
STK4141-2S
Lot No
External Apperance of Transistors and ICs
2SA933S
2SC1740S
2SA1048
2SC2458
Type No
hee Lot No
2SB834
2SC2603
Type No
=
Lot No HEE
2SC2878
Type No Lot No
hre
E
c
B
2SD438
ot No
Type No
hre
El
Cc’ Bp
DTA143ES
DTC124ES.
Type N
Lot No
E
c 48
RN1203
RN2201 Foe‘ bis
Lot No
E c b
28