Pioneer SX-6 User manual

Service
COMPUTER CONTROLLED
STEREO RECEIVER
X-G
MODEL SX-6 COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS:
Voltage : Remarks
120V only U.S.A. model
110V, 120V, 220V and 240V (Switchable) General export model
110V, 120V, 220V and 240V (Switchable) U.S. Military model
120V only Canada model
This service manual is applicable to the KU type. When repairing the S and S/G types, please see the
additional service manual (ARP-013), and see the ARP-014 for KC type.
For the circuit description, please refer to the model SX-7 service manual (ARP-074).
Ce manuel! d‘instruction se refére au mode de réglage, en francais.
Este manual de servicio trata del método de ajuste escrito en espaiiol.
CONTENTS
1. SPECIFICATIONS .............-....00. 2 7. SCHEMATIC DiIAGRAM................ 7
2. FRONT PANEL FACILITIES. ..........00. 3 8. ELECTRICAL PARTS. .............006. 21
3. BLOCK DIAGRAM..................... 6 9. PACKING 8. 20 20 is, ote cant ties Beh ahe eg Bate WS ahs 25
4. PARTS LOCATION. ..............000005 7 10. EXPLODED VIEWS ...............000- 26
5. P.C. BOARD CONNECTION DIAGRAM....... 9 11. ADJUSTMENTS. 20... 0. eee eee 30
6. MISCELLANEOUS PARTS............... 16 AEGLAGE: oc) eb uPA ous ea fa seh aa 33
ASUST EE 35 sc tec Mints Pee Gehan 36
PIONEER ELECTRONIC CORPORATION --:. Meguro 1~Chome, Meguro-ku, Tokyo 153, Japan
U.S. PIONEER ELECTRONICS CORPORATION 85 Oxford Orive. Moonachie, New Jersey 07074, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Luithagen-Haven 3S, 2030 Antwerp, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
FL ©JULY 1981 Printed in Japan

1. SPECIFICATIONS
Amplifier Section
Continuous Average Power Output is 45
watts* per channel, min., at 8 ohms from
20 Hertz to 20,000 Hertz with no more
than 0.009% total harmonic distortion**
Total Harmonic Distortion (20Hz to 20,000Hz, 8 ohms,
from AUX/VIDEO)
continuous rated power output
Pr Guiatate Mylettete Beats eine fe Maacans No more than 0.009%
22.5 watts per channel power output
DP eb bS bob Geo etontons No more than 0.009%
Intermodulation Distortion®* (50Hz:7,000Hz = 4: 12
8 ohms, from AUX/VIDEO)
continuous rated power output
bias SiO e's actareta eee ek No more than 0.009%
Damping Factor (20Hz to 20,000Hz, 8ohms) ...... 50
Input (Sensitivity/Impedance)
PHONO 2h sees eo Bee o sede Rees 2.5mV/50kilohms
TUNER, AUX/VIDEO, TAPE PLAY 1, 2
ES aalhs Sahee ite at sasveauiann teat: Presa cen eeece 150mV/50kilohms
Phono Overload Level (T.H.D. 0.009%, 1,000Hz, from
REC OUT)
PHONO: os, the cog $4, cee eee we ecantid tude Grete’ 150mV
Output (Lever/Impedance)
TAPE REC 1,2 ............5 150mV/2.2 kilohms
Frequency Response
PHONO (RIAA Equalization) 20Hz to 20,000Hz+0.3dB
TUNER, AUX/VIDEO, TAPE PLAY 1, 2
Sic stethet Ns alae acl i le 5Hz to 100,000Hz* 3dB
Tone Control
BASS seen tee ies Bela leans sd, aha 1 aOR bD. aoe +8dB (100Hz)
PREBR Ex coo 8 edo ets hee Be +8dB (10kHz)
Filter
SUBSONIC ...........0..208. 15Hz (6dB/oct.)
Loudness Contour (Volume controi set at -40dB position)
ao baie! lab arena, ets Ghucna +6dB (100Hz), +3dB (10kHz)
Hum and Noise (IHF, short circuited A network)
PHONO
MURIAG® 3 sce eSose a ala, esas Whe dhe a lta ee ~250B
FM Tuner Section
Usable Sensitivity (MONO)
toe Seah tat fab ate Binds oe 10.3dBf (IHF) (0.9uV 75 ohms)
50dB Quieting Sensitivity
MONO ........-.-0 000% 15.7dBf (1.6uV 75 ohms)
STEREO ented eG5 he 37dBf (19.54V 75 ohms)
Signal-to-Noise Ratio
MONO 2s ccead pete bad or dielecy. sae 80dB (at 85dBf)
SIEREOs 6.026% eee rs Ae Sea 75dB (at 85dcBf)
Distortion (at 65dBf)
MONO NOOH 2: Gastosevets: Sess eaee-a ated ees 0.1%
VKEZy g. custo OS Mo Sie bola at Orting 0.07%
GKHZ a. sei ed ena dee se 2.» 0.15%
STEREO 100Hz ..... Cis cals semana eee ee 0.2%
sia ote TKHZ- ee ee ee Se ee ee + 0.1%
GAZ ig bd eS ls Ge deee dg seed dees 0.25%
Capture Ratio: occ. sos, oc epd oo eu tebsine ao8 oe etes idB
Alternate Channel Selectivity (400kHz) ......... 80dB
Stereo Separation VKH 2. ie wee has aie PES 45dB
30Hz to 15kHz........... 35dB
Frequency Response .......... 20Hz to 15kHz+0.5dB
Spurious Response Ratio ............. Be we ete ahs 90dB
Image Response Ratio ...... 0... eee eee ee 80dB
IF Response Ratio ......... 0. ce eee ee 90dB
AM Suppression Ratio... 2... 0.0.0.0. ees 55dB
Subcarrier Product Ratio ...... 0... eee ee ee 40dB
SCA Rejection Ratio... ... ee ee ee 60dB
Muting Threshold ...........0.20005 29.3dBf (8uV)
Antenna Input . . 300 ohms balanced, 75 ohms unbalanced
AM Tuner Section
Sensitivity
IHF, ferrite antenna ........ 0000s 300uV/m
- THF, external antenna .........0.000 00 15uV
Selectivity <a. caw eave Dee ede a ee 27dB
Signal-to-Noise Ratio... 1... eee ee ee 50dB
Image Response Ratio ........ 00. eee ee eee _. 40dB
IF Response Ratio ...... 2... cee ee es 80dB
Antenna ........... Built-in ferrite loopstick antenna
Miscellaneous
Power Requirements .............- AC 120V, 60Hz
Power Consumption ........ 230W (UL), 280VA (CSA)
Dimensions ......... 420 (W) x 130 (H} x 370 (D) mm
16-9/16 (W) x 5-1/8 (H) x 14-9/16 (D) in
Weight (without package)......... 8.5kg (18 Ib 12 oz)
Furnished Parts
FM T-type Antenna 2.2.2... .. 2 cee ee ees 1
Dry Batteries (“AA type) ....... dte-thaiaaneaensce sie 2
Station Card «cece ccc cece ccc ccc enn ewe eee eens 2
Operating instructions .. 2... Le ees i
“Measured
pursuant
to
the
Federal
Trade
Commission’s
Trade
Regulation
rule
on
Power
Output
Claims
for amplifier.
**MYfeasured
by
Audio
Analyzer.
NOTE:
Specifications and design subject to possible modification without
notice.

2. FRONT PANEL FACILITIES
QO @ ®
STEREO OC — OQ — em
o-4
vorume 1 tee!
em [Cemat
an (CART
OUTPUT POWER
eo twee ts
Ng @® POWER SWITCH
Power is supplied to the unit when this switch is depressed
(“in’’ position). Once the power has been switched on,
the volume level heard before the POWER switch was set
to OFF blinks on the display for about 5 seconds.
NOTES:
© When a function is selected or the VOLUME switch is de-
pressed while the volume level is blinking, either the level
lights or the frequency is displayed.
® Although it is very rare, nothing may appear on the display
if a switch is set from OFF to ON immediately after the
POWER switch is set to ON. In this case, set the POWER
switch to OFF and then depress the switch in question again
slowly,
@ BASS CONTROL
Use this control to adjust the bass of the sound. When the
control is moved to the right (+ direction), the bass: is
emphasized, and when it is moved to the left (— direc-
tion), the bass is attenuated.
@ TREBLE CONTROL
Use this control to adjust the treble of the sound. When
the control is moved to the right (+ direction), the treble
is emphasized, and when it is moved to the left (— direc-
tion), the treble is attenuated.
@ BALANCE CONTROL
Use the control to balance the volume of the left and right
channels. If the sound appears to be louder on the right,
it means that the volume of the right channel is higher.
Turn the balance control to the left and adjust. Conver-
sely, if the sound appears to be louder on the left, it
means that the volume of the left channel is higher.
Therefore, turn the balance control to the right and
adjust.
MANUAL me STATION SEARCH
@ MUTING SWITCH
Press this switch to attenuate the audio output indicated
on the display by 25dB. There is no need to adjust the
VOLUME level if you use this switch when turning down
the audio output temporarily and when changing over
records or tapes.
NOTE:
By adjusting the VOLUME switch in combination with the
MUTING switch, it is possible to adjust the volume more finely
across a very wide range.
@® VOLUME SWITCHES
Use these switches to adjust the output level to: the
speakers and headphones. Press the /A switch to increase
the output level. Press the V swich to attenuate the out-
put level.
@ PHONES JACK
Plug the headphones plug into this jack when you want to
listen through your stereo headphones.
Release both SPEAKERS switches if you want to listen
to the sound through your headphones only.
SPEAKERS SWITCHES
Depress the switch corresponding to the speakers con-
nected to the SPEAKERS terminals (A or B) on the rear
panel. “‘A”’ refers to the speakers which have been con-
nected to the A SPEAKERS terminals on the rear panel
while “’B’’ refers to the speakers which have been con-
nected to the B SPEAKERS terminals.
NOTE: ;
No sound will be heard through the speakers when both the A
and B switches are depressed if only one set of speakers has been
connected to either the A or B SPEAKERS terminals.
@ OUTPUT POWER METER
This meter allows you to read out the rated power
level on the bar display when speakers with a nominal
impedance of 8 ohms are connected to the SPEAKERS
terminals. (Continued to next page)
3

QPIONEER stenco Recriven sx-6|
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DO ee
SSS SS Sy BroG1a0101 +
@)
STATION INDICATORS
The indicator that corresponds to the STATION CALL
switch which has been depressed lights.
NOTE:
When presetting a station, all eight indicators light in sequence
_ for about 5 seconds.
@ STATION DISPLAY WINDOWS
Insert the frequency cards of the broadcasting stations
which have been preset into the STATION CALL
switches.
(@ VOLUME STEP INDICATOR |
This lights when the volume steps are indicated on the
display.
@ FM STEREO INDICATOR
This lights when receiving an FM stereo program.
FM INDICATOR
This lights when receiving the FM broadcasts.
@ AM INDICATOR
This lights when receiving the AM broadcasts.
DISPLAY
This indicates the broadcasting frequency when a station
has been tuned in; otherwise, it indicates the volume steps
with. the reproduction of the program source.
NOTE:
When the power is switched on, the volume step display blinks
to indicate the volume level. After blinking, the volume step
lights or the frequency is displayed.
@) PRESET STEP INDICATOR
This lights when the sound reaches the preset volume
level. :
@ DOOD Bd B B B
NOTE:
When presetting the volume level, the display blinks for about
5 seconds to indicate that the volume level may now be preset.
SIGNAL INDICATOR
This indicator lights in sequence from 1 to 3 during the
tuning of an AM or FM broadcast in accordance. with the
strength of the signals being received. The optimum
tuning point is where the maximum number of indicators
lights.
MUTING INDICATOR
This lights when the MUTING switch is pressed.
@) TUNING SWITCH
This switch is used to tune in the station.
Depress the /\ part to tune ina station with a higher fre-
quency than that on the display; depress the VV part to
tune in a station with a lower frequency.
NOTE:
for further details on the tuning, refer to the @ AUTQ/
MANUAL SELECTOR.
@ FM SWITCH
Depress this switch for FM reception.
@ AM SWITCH
Depress this switch for AM reception.
@ INPUT SELECTOR
‘PHONO: Press this switch when playing a record
on the turntable connected to the
PHONO jacks.
AUX/VIDEO: Press this switch when listening to an
audio component connected to the AUX/
VIDEO jacks.

@) PRESET-VOLUME SWITCH
This is depressed when the volume level is to be set to
the preset level (the PRESET STEP indicator lights).
When presetting the volume level, depress the MEMORY/
STOP switch with the volume level still indicated on the
display, and then depress the PRESET-VOLUME switch.
@) STATION CALL SWITCHES
These are pressed to call out preset broadcasting stations
and to preset the station.
To call out a station, first set the desired frequency band
using the FM or AM switches and then press the desired
switch.
@) INPUT INDICATORS
These light when the INPUT (PHONO or AUX/VIDEO)
switch is pressed.
@) AUTO/MANUAL SELECTOR
This is used to select the reception mode.
AUTO (released position): Auto tuning is selected in
accordance with the position selected by the STATION
SCAN/STATION SEARCH selector on the right.
MANUAL (depressed position): For manual tuning
Depress the TUNING switch and tune in the station.
manually. Each time the TUNING switch is depressed,
the frequency changes in 100kHz steps during FM
reception and in 9kHz or 10kHz steps during AM
reception in accordance with the position of the AM
CHANNEL STEP switch. When the TUNING switch is
kept depressed, the frequency is continuously scanned.
Tuning stops when the upper or lower limit of the
frequency band is reached.
STATION SCAN/STATION SEARCH
SELECTOR
This is used to select the auto tuning mode when the
AUTO/MANUAL selector switch on the left is at AUTO.
STATION SCAN: When the TUNING switch is depressed,
the broadcasting stations start to be scanned and this
procedure stops once a station has been picked up.
The program of that station is heard for about 5
seconds. The tuning operation then resumes and sound
is heard in the same way. Each of the stations is thus
picked up in turn.
When the MEMORY/STOP switch is depressed once
you hear the sound of the desired program, the tuning
Operation stops and the unit is set to the reception
mode.
STATION SEARCH: When the TUNING switch is de-
pressed, the broadcasting stations start to be scanned,
but this operation stops once a station has been picked
up and the unit is set to the reception mode. Depress
the TUNING switch if the station picked up is not the
one desired. The tuning operation now starts over
again.
@ TAPE MONITOR INDICATOR
This lights when the TAPE (1 or 2/ADPT) switches are de-
pressed.
MEMORY/STOP SWITCH
This switch is used to preset the broadcasting stations into
the STATION CALL switches or to preset the desired
volume level into the PRESET-VOLUME switch.
This switch is also used to stop the tuning operation
during the STATION SEARCH or STATION SCAN
functions.
@) TAPE SWITCHES
1: Depress this switch to monitor the recording or
playback of a tape on the tape deck connected
to the TAPE 1 jacks (REC and PLAY).
2/ADPT: This is depressed when using a tape deck or
adaptor unit connected to the rear panel TAPE
2/ADAPTOR jacks.
NOTE:
Depress switch 1 and release switch 2/ADPT when dubbing a
tape in the deck connected to the TAPE 7 jacks onto a tape in
the deck connected to the TAPE 2/ADAPTOR jacks.
62 MONO MUTE OFF SWITCH
The sound is heard in mono when this switch is set to the
depressed position. Normally, the switch is kept at the
released position. During FM or AM reception, the noise is
reduced and reception is made clear. When the station is
distant and its signals are weak, depress the switch and
tune in the station manually.
63 SUBSONIC SWITCH
The subsonic filter with the 15Hz cut-off frequency is
actuated when this switch is depressed. This filter serves
to attenuate the frequencies lower than 15Hz with a
6dB/oct. slope and, therefore, it can be used to suppress
the ultra-low-range noise which is generated by record
warp and other factors. This noise cannot actually be
heard by the ear but it can cause cross modulation distor-
tion and even speaker damage. Use this switch when
required during record play.
@4 LOUDNESS SWITCH
When listening to a performance with the VOLUME level
is low, depress this switch and the bass and treble will be
accentuated.
When the volume is low, the human ear finds it harder to
hear the bass and treble than when the volume is high.
The LOUDNESS switch is thus designed to compensate
for this deficiency.
3. BLOCK DIAGRAM
FM TUNER
MIX! 1F AMP
RF AMP a
FM ANTENNA
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BUFFER uf Ry I
| AM TUNER
AM_TUNER
AM
ANTENNA
ae
IF AMP, DETECTOR MPX DECODER LLRF. AF AMP
2 12 43
g
1 IN OUT 6
{PA3001-A)
21IN LOUT4
L OUT
(TO FUNCTION)
R OUT
i (TO FUNCTION)
3
(HAIIS6W-P)
W
ROUT 5
PRESCALAR & PLL
CIRCUIT 4 3 1FM 7
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CS
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DISPLAY
DISPLAY
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CIRCUIT INVERTER I
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(6)
(7)
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STATION
IND.
REF.OSC__(TC4049BP)
INVERTER
(
TC4069UBP)
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TOR CH
EQUALIZER AMP
35.6 dB( AT tkHz)
(NJM4558DXC)
| TAPE 1 ADAPTOR !
vice
©
FUNCTION
ee
.
Py
(PA4008) REC PLAY OUT/ IN/
TORCH REC PLAY
“API
TARE ADAPTOR /TAPE 2
—+35V(+BS)
+ 42.5V(+B1)
+28V(+B2)
+418.6 Vi +B3)
VOLUME
& MU
(PASO04)
+ BALANCE
TING
+12.2V(+B6)
+ 4.9V (+ B7)
+4.9V (+88)
OVERLOAD
DETECTOR
TONE CONTROL
SPEAKERS ~——~B

MPX DECODER L.RF. AF AMP
in OUT
(TO FUNCTION)
FF R OUT
(TO FUNCTION)
IF AMP, DETECTOR
1 IN OUT 6
(PA3001-A)
21N LOUT4
3
(HAItS6W -P)
W
ROUT 5
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TAPE 2 /
TAPE! ADAPTOR
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“hh (STEP)
IND.
TAPE AUX [PHONO | (1) (2) (3) (4) (5) (6) (7) (8)
"ATION IND.
ra ey STATION IND
as POWER METER ORIVE
OETECTOR
COMPRESSOR
PEAK HOLD
EN
DC AMP
6 (TA7318P)
MUTING
IND.
| TOR CH
—l POWER AMP
OVERLOAD
DETECTOR
mr
Yo
JBSONIC
PROTECTION
CIRCUIT
TONE CONTROL
A —— SPEAKERS ~—B
4. PARTS LOCATION
NOTES:
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
**
and
*
*x*x GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View
Knob
(FM)
Knob
(TUNING)
sates
AAD-401
isplay
cover
Knob
(AM
ANR-408
pea
Top
cover
Knob
(MEMORY/STOP)
BNESGO
AAD-404
Front
panel
assembly
ANM-064
Knob
array
Knob
(BALANCE,
(VOLUME,PRESET,
TREBLE,BASS)
MUTING,INPUT)
AAB-274
AAD-407
Knob
(POWER)
AAD-406
Knob
AAD-405
Front View with Panel Removed
* LED numberic display
AEL-378
* Variable resistor
(BALANCE)
ACT-028
* Variable resistor
(TREBLE) Control assembly
ACT-139 AWX-220
* Variable resistor
(BASS)
upitan 7 * & Push switch
/\
&
&
Push
switch
ASG-297
(POWER)
ASG-521
* &
Push
switch
Phone
jack
;
(TUNING)
(PHONES) *& *& Push switch
ASG-298
AKN-030 (SPEAKERS) Level meter assembly
ASG-299 AAV-305
Rear Panel View
Terminal Case cover
(AM STEREO OUT) ANR-432
AKB-076
[AC socket
(AC OUTLETS)
%
%
Slide
switch
:
AKP
039
(AM CHANNEL STEP)
ASH-015
Bar antenna assembly: Terminal
ATB-631 (SPEAKERS)
Terminal (ANTENNA) AKE-103
AKA-017
_N\AC power cord
Terminal
(INPUT,
ADG-052
TAPE1, TAPE2/ADAPTOR)
AKB-078
Top View
/\ % & Fuse (5A)
AEK-108
/\ Power transformer
ATT-841
AF assembly
GWK-185
/! % & Fuse (2A)
AEK-103
Tone control assembly
GWG-160
Botton View
\ & & Power transistor
2SA1104/A/-Y
(2SA1104/A/-O)
\% & Power transistor
2SC2579/A/-Y
(2SC2579/A/-O)
AF assembly
GWK-185
/\ & & Power transistor
2SA1104/A/-Y
(2SA1104/A/-O)
(2SA1104/A/-P)
/\ & & Power transistor
2SC2579/A/-Y
(28C2579/A/-O)
(2SC2579/A/-P)

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 *
xx GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View
Knob (FM) Knob (TUNING)
erie AAD-401
isplay cover Knob (AM
ANE 0S pees
Top
cover
Knob
(MEMORY/STOP)
ANE-360
AAD-404
Front panel assembly
ANM-064 Knob array
Knob (BALANCE,
(VOLUME,PRESET,
TREBLE,BASS)
MUTING,INPUT)
AAB-274 AAD-407
Knob (POWER)
AAD-406
Knob
AAD-405
Front View with Panel Removed
* LED numberic display
AEL-378
* Variable resisto
(BALANCE)
ACT-028
* Variable resistor
(TREBLE) Control assembly
ACT-139 AWX-220
* Variable resistor
(BASS)
ecuae - ; * & Push switch
A\ & & Push switch ASG-297
(POWER)
ASG-521 * & Push switch
Phone jack (TUNING)
(PHONES) %* & Push switch
ASG-298
AKN-030
(SPEAKERS)
Level
meter
assembly
ASG-299 AAV-305
Rear Panel View
Terminal Case cover
(AM
STEREO
OUT)
ANR-432
AKB-076 /,AC socket
(AC OUTLETS)
4% Slide switch AKP 039
(AM CHANNEL STEP)
ASH-015 qi Kf | a
aa
as
|
=
—
+
Terminal
Bar antenna assembly:
(SPEAKERS)
ATB-631
Terminal
(ANTENNA)
AKE-103
AKA-017
NAC power cord
Terminal (INPUT, ADG-052
TAPE1, TAPE2/ADAPTOR)
AKB-078
Top View
/\ % & Fuse (5A)
AEK-108
/\%Power transformer
ATT-841
AF assembly
GWK-185
/), *& & Fuse (2A)
AEK-103
Tone control assembly:
GWG-160
Botton View
c\ & & Power transistor
2SA1104/A/-Y
(2SA1104/A/-O)
_\ %& & Power transistor
28C2579/A/-Y
(28C2579/A/-O)
AF assembly
GWK-185
/\ & & Power transistor
2SA1104/A/-Y
(2SA1104/A/-O)
(2SA1104/A/-P)
{\ & & Power transistor
2SC2579/A/-Y
(2SC2579/A/-O)
(2SC2579/A/-P)
Bar antenna assembly
ATB-631
—- Tuner assembly
GWE-168
Tuner assembly
GWE-168
Bar antenna assembly
ATB-631°

1
2
5. P.C.BOARD CONNECTION DIAGRAM
TUNER Ass’y (GWE- 168)
Q303 Q304
Q301,Q302 ai
ul TCiON
Te! Tc2
ig-———o
T2 BAR-ANTENNA
pose OO
cae
PRS ca
C308...
47076 ;,
o-Bt-o.
Q306 Q305
|
A
A AM STEREO OUT
Qi02 9205 95 2206 = 307, 013,44
Q2
Q10i
aid
[a3
Q3I7
Q3i8
aisiag
Q12
201,06
L102 FIOd
4 1 5 L101
Tc102
2 Q205 206
PSC2603
C120.0.01...
aN
4 ’
Rago,
100k:
fd
<W>
<>
Q203 Q309
Q202 Q7
Bia
<M>
VRi
4
SUM-3x2
|
0316
9308 Q9j aio
T2
gaia
Qz6 |
uPC78MOSH
28KI68 of
29°);
“ar
qr O04 Fete
R2ie 120 ~
: x
Q315
Q313
A A
H i
v v
“3
Q8
O3I9~Y 322
10€2
10322
re)
12 W310 034,
VR2
Q314
" AUTO
SWITCH As
LEVEL
METER
A
<I>
<K>
m= <>
<MD>
~<N> 4
Qe

S3 AM
Tokre CHANNEL
Se STEP
TONE CONTROL. Ass’y
(GWG- 160)
<I>
<>
<>
|
SWITCH Ass’y Ri08 39k
RIO9 39k ’
A i
:
Shoe
"Se0
gee
FUSE
HOLDER
Ass’y(B)
v v 5 As !
cn oes a3i3 ap BBt2/ 9310g34 314
R2 LEVEL METER Ass’y(AAV-305)
0319-4 322
1062
0322
I Q3ts
4O5H
yPC7SMI2H
[38 [39/40/41] 42]43] 44]
FUSE HOLDER Ass’y(A)
el
aT
i
hl
is
ee
A
= eee
A
Y
CONTROL.
Ass’y
(AWX-220)
14,15
Q10,
14,42
Q7,9
Q3
Q6
05
Q7,9,14,15 TUNING DIS 014 O13
st
2SAHIS
pol
Became
(3)
(2) Ww
aoni2.
28¢2603 |
QS 2SAN5S
Q6 = =2SC2603
DIO A130 45,27 AE
Di2,2 :

7
8
@g
‘|
10
11
12
TONE CONTROL. Ass’y
(GWG- 160)
+ $3 AM
CHANNEL
STEP
cee — sesh fool oe = i c2 0.01/AC250
| jalan
Wy 3 WHT $24 |
<I>
\ss’y
1 i
, BLU
FUSE
HOLDER
Ass’y(B)
|
o
ch].
i,
{&S
se
so
SHES
Tien“
&
Saas
Ne
f=
A
1 125 ase:
ALK!
|
AC
POWER
CORD
zs ee
OR 4 Se BERN | a ees eee
pees
RU
SOS)
‘a
[
SWITCHED
UNSWITCHED
a Se ies —_j) BOW MAX 200W MAX
Ti PWER TRANSFORMER
Ri 2.2M
FUSE HOLDER Ass’y(A)
CONTROL
Ass’y(AWX-220)
Q10,
14,42
#
GC
Q7,9,149,15. O15 014 Dis
2SAHiS = Sen WE nome . (3) (2) MQ)
gion i2—
25C2603
Q5 2SAHIS
MUTING
Teg
: :
#220.
we
‘06
25C2603
“CS i. ie ie
{000P~ 913252603

AF Ass’y(GWK- 185) hae
Q27 2SB8507
Q28 2SD880
Q29 JAIOI
<O
<z
—(U>
Q22)
TP.
VY
Q4 2S8C2579/A/
2
sa
Q3 2SA1 104/A/
Q28 Q26
eet" 2S A979
Q3,4'\28C2294
Q5,6 ‘25905
078 2SCI915
Q9,10 15,46 |
sntn-enney, 2SC2603 ARE
INiq BSAHISZAY
@25 280438
<T>
aa <s>
co
+—<V —~
aba
Gar
10,8
os
60a4
[a7
025
g23
Q29
Q6
8
Q
Qo
O73,
18,14,
19
Q24
TP VRI
Q2
28C2579/A/
QI
2SA1
104/A/
Rg3 R82
4808 1/20) 450(172W)
4 S
<W
HEADPHONES JACK
Ass’y
14

Exteral Appearance of Transistors and ICs
2SA1104/A/ 28C2291
28C2579/A/
Cc
2SA1115/A/ 2SA905
2SC2603/A/ 28C1915
Lot No hre
—
c
B
2SC535 2SC2238
2SC461 Type No Cate 2SA968
2SB834
hee 2SD880
2SD313
8 2SD836A
r E
2SA733A 7 2SC1914A
2SC945A ais
Type No FE
Suffix
E
c
B
2SC1923 28C1815
Type No ts 2SA1015
hre
E
c
B
28C1919 28C 1384
Lot No—
Type No
here
B
Cc
E
2SA979 2SB507
Type No
Lot No hre
BI
cl
E
c2
B2
15
Type No
Lot No re
El é
ci
B
c2
Type No
Suffix
Lot No
hre
Type No
r- _
B c
Lot No
thre
E
Cc
Type No
P001
2SK168
Type No.
loss
Lot No
G
s
1°)
28574
Lot No
Type No
loss
D
G
Ss
PA3001-A
TC4049BP
M74LS42P
HA1156W-P
TC4069UBP 3 -
Index
LA1247
M54922
2 iS 22
LAANAN ARAN
KAMAN
NJM4558DXC
\ ee ay
5
uPC4558C-P busy
index
PA4008 —_ a TA7318P PDG004
yuPC78M12H TD6301P PA5004
uPC78M05H 1s
FOTNTITTONT
JC501
JA101 Type No
hee Lot No
E
c
B
6. MISCELLANEOUS PARTS
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 xX 10° 561..... RD4PS BM J
47k. 47 x 10° 473...... RD%PS (alas) J
0.52 ORG: m2 he eh he ee at RN2H K
12 OLO> oh el ba pieces eg bos RS1P (ld 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 BAM F
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 ** and * .
*x* GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on
model number, temperature, humidity, etc.
Miscellaneous Parts
Mark
Part
No.
Symbol
&
Description
Mark
Part
No.
Symbol
&
Description
‘o*&
=
ATT-841
71
Power
transformer
A*®*
—
2SC2579/A/-Y*
Q2,04
ATB-631 T2 Bar antenna assembly (28C2579/A/-0*)
Ake AEK-108 FU1 Fuse (5A) (2SC2579/A/-P*)
A®* ~~ AEK-103 FU2 Fuse (2A) *hfe of Q1—O4 should have the same value.
Awe ~ASG-521 $1 Push switch (POWER)
AKB-076 Terminal (AM STEREO OUT)
A ACG-017 C1 Ceramic capacitor A ADG-052 AC power cord
(0.01/AC125V) A AKP-039 AC socket (AC OUTLETS)
A ACG-001 C2 Ceramic capacitor GWK-185 AF assembly
(0.01/AC250V) GWE-168 Tuner assembly
A ACN-029 Ri Carbon composition
resistor (2.2M, %W) GWG-160 Tone assembly
AWX-220 Control assembly
Awe
2SA1104/A/-Y*
Q1,03
AAV-305
Levei
meter
assembly
(2SA1104/A/-0*)
(2SA1104/A/-P*)
16

1
Z
3
a
5
6
7.
SCHEMATIC
DIAGRAM
eines EAE = a TUNER Ass'y GWE ~168_ © i erccoenl ORG ee comeereet
ee a2 2SC535 Rat rs} 7
Res
Ft R26 L R27 cat a R37 C35
b
os.
Sp
400
Ss
|
30
Fiok
ze
To
oar
Ti
iH
pa
15k
22016
wee
¢
5 = F2 R30 RBI FS =
eM
[
3008
BAL
Ace
Vi
34
Laie
3656
R36
eo
‘4700p
¢
15p ae \ fi \/ + Q9,10 JAIL {
75. UNBALI co WC4l i
as ‘aie =f YD fen MV Fat at sg
AM f 330 16.047
Pf
1
©80 tp) Mo Fe Or
Bos we
L Re lit]
2. ERI O13 Qi5 2SKi68 gos Q4,5 2SC835 o6
ee 33k pe EM FRONT-END BUFFER AMP A B® eee A FM iF AMP YAIOL 2
pesd FM Ree Q7 PA300I-A Se Q8 HANSEW —P
R22t 220 AT oe FM iF AMP & DET MPX IC
R222 220 < SB :
Rie * ‘
R223 220 oe 6.8k
R224 220 ¥ CG 03 Q3
“ir S)
«ee ey S [es] 28ci923
202
0.01 a [|
=a skofskskat TIO ioe
4 ts 6 5 4 3 2 1 470
oD oc OB DA
1 40. 8
duo Wo TBS REF AM REF EM
28kHz (AM) (FM) ee aaa
YR Ria cia Q317 , 318
12x 27 189 OsAili5eAr
Q317 SWITCHING (AM =ON)
SWITCHING
(AM = ON)
fies 0317 [Hf
RESET
/te TEST PO LOCK AM/FM TIMING 450KHz OUT XIN Voc! Voc?
23 0305 23 145 tI? tt 2022 mr ciiz CY) R331
D} 47k
24 0201
y are Y | hea] | xi hea] 2.4] 1SIS55_ or _1S2473
308
220,
o
oie
0323
[its
030: 204 206 207]
1 1Si555 or R203 een 22 é ” 04 Qa
{$2473
3.3K
+
Ass
oe
sles)
42
ek
AUTO
STOP
&
MUTING
309
TeaossuBP
|
R20t
g298
C209.
R205
=
°
10K 04 0.68/60 GK | oo, meagan aae
43) >
x
|
AM
FM
PRESCALAR
Qio1
=
LAI247
B10
SWITCHING
(FM
=ON)
(4) cao #8202271 aw 0203 PLL cane ee AM TUNER IC
ro 7 Bre © 0.01 Leg 0202 cos 199 Tee bie yal Q308 PAS004
S
1
ley
CH
<
(26)
fo)
Nes)
2
J
;uod
Od
he
VOLUME
&
MUTING
areal Froioi BR OI~t 18509 Boar lea}
13 | cue Rue se
13 AYEL. is 5k 0323 ,324
iT |e a202 ,203 JC501 bg ee Me 100 oF vesot
' S C213 0.047 PF D316 , 3t
7 AplK (6) 5 28C2603 7 (51855. or 182473
bo. Q205 & ‘220
Reale
DIO!
_KVI2Z26—Y
aeeat
' LED DRIVER Tz]
2— 1K264 C)
105] 102 2sca6i giz0 [oon
AM_ STEREO OUT "RNG Ruy ¥ cl2t
0304 BUFFER Yook | tek 7 0047 eRe FUNCTION 1 17 16 15 ~~ 14 10 |
SWITCH RIN +8 TIR CBR T2R OUT VOL. MUTE GND
Q314
_
9308
YAIOI L-IN -B TIL CBL T2L OUT LOUD. CU BAL
' 2 3 4 5 6 7 8 9
SWITCHING
(QkHz = ON)
$20-1 SEARCH
MANUAL Q310 , Sit
2SU74NFRE
ATT
rk
0302
D306 ~ 315 , 318
igtsee
ae!
ISIS55
or
1S2473
182473
R30 10k R381 33k
SA: Ase? _ FUSE HOLDER
| Fuse HOLDER Ass’y (B) ae
l [ ican | 1; AEK— 08
a Fu2.2a ¢ zs
ios $24" POWER
be ASG - 824
2scigig
Q305
NJM4558DXC_ or
yPC4558C — P
EQUALIZER AMP
D319~ 322
1OE2 or
SIBOI-02 | gais,
uPC78M12H
7 SWITCHED
R385 Q316 SOW MAX, Bom
47k yPC78MOSH A G7ew)]
REGULATOR (my
‘315
200W MAX.
1. RESISTORS: 2. CAPACITORS: 3. VOLTAGE, CURRENT: 4. OTHERS:
Indicated in 9, %W, 1/8W, +5% tolerance unless otherwise noted k : k2 Indicated in capacity (uF)/voltage (V) unless otherwise noted p : pF (J : Signal voltage at 45W+ 48W 80 output (1kHz) exp: Signal route. ey ; ce or
. aoe i : ‘ a ‘ Bi H
M:MQ, (F) : £1%, (G) : #2%, (K) : + 10%,(M): 4 20% tolerance Indication without voltage is SOV except electrolytic capacitor. [7]: DC voltage (V) at no input signal @ : Adjusting point. ves ies pee Ei daar aren. ur Aig geod eM cma. vary,
Value in ( _) is DC voltage at rated power. The mark found on some component parts indicates the im- (sie ehiag :
<=> mA: DC current at no input signal portance of the safety factor of the part. Therefore, when replacing,
be sure to use parts of identical designation.
1
2
3
4
)
6

7
8B
Qo
10
1
12
!
I
. r
‘
]
The
indicated.
semiconductors
are
representative
ones
a2
2SD836A
19
Z-
192
¢
:
i
‘
=
a
_
__AF
Assy
GW
~
185
|
re
Qs?
“ea807
20s
wz-290
bb
ale
eo.
only,
Other
alternative
semiconductors
may
be
used
and
10K
°
.
-
$23:
ooo}
Sees,
eesnee0
Deli
ees
182474
Gs)-—{
a
:
are
listed
in
the
parts
list.
1,2
As
SPEAKERS
(A)(B)
fe)
SPEAKERS
A
|
929
JAIOI
b23
KZLOS6
aa
cecseeh
Ringe
ASG
-
299
ee
Sea)
REGULATOR
24,27
181555
o22
7
SWITCHES:
2ma
Q1,3
2SAt04
FAK
eesti
2.
@|,%
STE
025
RBEOZ
a8
ices
pus
ozmad}
;
>
~-702,4
28C2579%
Ax
SPA
yw
leven
p26
10E2
0
$1:
VOLUME
(UP)
ON
—
OFF
S308]
POWER
AMP
A
$2.
VOLUME
(DOWN)
ON
—
OFF
1
RS
|.
-
a
$3
¢
MUTING
ON
=~
OFF
15k
fe
el
|
-
©
RUG
foo
th
p26
«R20
22
S4
©
PRESET
ON
OFF
5
SPEAKERS
B
e,
22)
5.6
A
150
$5
.
TUNING
(UP)
ON
—
OFF
Se"
@|
®
“HEADPHONES
on
QL)
Laus
ee
$6:
TUNING
(DOWN)
ON
—
OFF
JACK
Ass'y
7,
bt
a
+
A
$7!
MEMORY
/
STOP
ON
—
OFF
BLA
SRELAY.
foo
es
oF
:
mcs
$8:
STATION
CALL
(1)
ON
—
OFF
a
SO
180
1
.
p25
OFF
etn
“ten
ae
4,46.
PONS.
\
“rest
q’o20
7"
ieee
talon
7
$9
|
STATION
CALL
(2)
ON
—
OFF
a
a7
2
lermv
!
cae
is
|
98
:
i
SIO:
STATION
CALL
(3)
ON
—
OFF
{|
Rez Res
448
4
ven
728
i
i
3
Sit:
STATION
CALL
(4)
ON
—
OFF
Se
dew
SP
AT
IW.
|
mee
ese:
t
leas
S12:
STATION
CALL(5)
ON
—
OFF
L
|
|
Ce)
Es
!
1
[0.01
:
$13.
>
STATION
CALL(6)
ON
—
OFF
bene
as
BHT
aie
|
SS
css,
cso
|
b-—
—|-~—
a
ans
SI4
|
STATION
CALL
(7)
ON
—
OFF,
56k
b
4
"tin
730
|
Zac
Gc
SIS:
STATION
CALL
(8)
ON
-
OFF
Q21,22
2Sci9i4a
47k
SIG:
INPUT
(PHONO)
ON
—
OFF
923,24
Jcsot
wewure
F)
ed
SI7_:
INPUT
(AUX
/VIDEO)
ON
—
OFF
ee
Q25
280438
3
|
3s
07
A
RY
\
sia:
FM
ON
—
OFF
PROTECTION
18
|
fs
Si9
|
AM
ON
—
OFF
fof
ee]
S20-
1
|
TUNING
AUTO
~
MANUAL
$20-
2
|
TUNING
STATION
SCAN
—
STATION
SEARCH
95,6
2sa905
Oa
2Saii5
@)
$2i—
4:
TAPE
1
ON
—
OFF
7,8
28c1915
QI7,
18
28c2275
Dia_MZ~150
|_|
S2i—2
2
TAPE
2/
aDPT
ON
-
OFF
Q9,10,15,16,
2SC2603
a9
,20
25A985
DI7
1S1555
@2)
®
S2!—
3
|
MONO/
MUTE
OFF
AUTO
ON
—
MONO/
OFF
S21-
4
:
SUBSONIC’
(15Hz)
ON
—
OFF
Qin
20
De~I2
0s~8
DIB~I6
2
1
$21-5
|
LOUDNESS
ON
—
OFF.
POWER
AMP
WZ-
046
182473
IS247i
]
$22
AM
CHANNEL
STEP
QkHz—
—
10kKHz
|
S23~=1
<
SPEAKERS
(A)
ON
— OFF
Stole
ct
$23-2
|
SPEAKERS
(8)
ON
-
OFF
aa
aes
ODE
$24:
POWER
ON—
OFF
THI2
THIO3—2
The
underlined
indicates
the
switch
position.
B
CONTROL
Ass'y
AWX
—
220
C
_
aan
ane
&
~~
aT
‘Vovume
33
S4_
TUNING
57,
MEMORY
Q5,7
2SANIS
100/25
St:
UP
S2:D0WN
=
MUTING
PRESET
S5:UP
S6:DOWN
/
STOP
96
=—-2sc2603
oz
ae
50, 530
oo
oo
he
t¢
(K)
5,6:
DIGIT
CONTROL
shit
se
(i)
|
soi2i}
sitar]
sua)
|
si2isy
IDLE
CURRENT
°
o
0
°
ce
|
tr
|
Q7
SWITCHING
(FM~ON)
c92-
063
QS 2SAIlIS
SWITCHING
(VOLUME + ON)
Q4 PD6004 |
CONTROL
34°33 32 31 30 29 2827 26 25 24 23 22 21 2019 18
Ltede Dagtede ba
3st fs
6 08
08 LED NUMERIC
DISPLAY
AEL — 378
33] 38/82] 82
Di~7,30
e2
Tcaca9BP
wonwem
2
bes
INVERTER
LEVEL METER Ass'y AAV — 30:
Se :
oPORSTU
220
Q30
TA7318P
METER AMP.
Or NMLKJIHGFEDCB
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Tt
_|
Vee
at
bi ci
diel
tl
gi
a2
b2c2
d2e2 t2
Lasik,
FM100K
—
Lamon,
FMM
cK2
—
-AM:I00k ,FM:10M—,
hz2
70
CKI{
aq
93
13.03
43
63
b3
a3
92
GNO
H
12.345
67
89
1011
1213
14
j23
3
CT
oe.
tL
[4.9]
12
DATA
4
—
»
29
Qi
=-TOE630IP
DS
14,14
:
thal
asa
LED
DRIVER
151555
Boas.
z
VR3
:
BASS
10K
t17ew)
VER
|
ACT=
138
LED
DRI
a
V4:
TREBLE
=
pas,
_
YER
VRS:
BALANCE
15
ee
‘AGT—
028
in
Qi0~
12
28c2603
to)
LED
DRIVER
R71
‘680
R37
RAG
b
!
1
22k
1OKti7ew)
(&)
ozo
TING)
nann
-—_—_—
OO
OF
PY
Mu
il
TONE
CONTROL
Ass’y
GWG
—
160
D
18
rT
e)
DIO,
11,13
~
15,
27
ll
os
188
p27
sEL
376
a
us
(VOLUME)
012
,28,29
H
AEL
~
377
Q3
M74LS42P
Qi3
_2SC2603
D024
,
25
|
BCD
DECODER
LED
ORIVER
AEL—351
DI6~
23,26
H
(PHONO)
(AUX)
(TAPE)
AEL
—
365
(FM) R45 (STEREO!
l 180
- ess
ee
7
8
re)
10
3
11
12
=o

-ECTRICAL PARTS
ordering
resistors,
first
convert
resistance
values
into
code
form
as
shown
in
owing examples.
Vhen
there
are
2
effective
digits
(any
digit
apart
from
0),
such
as
560
ohm
ind
47k
ohm
(tolerance
is
shown
by
J=5%,
and
K=10%
).
1602
56
x
10!
561.....
RD“PS
BAH
J
17TRQ.
47
x
10°
473.0...
RD4“PS
(MG)
J
152
OF
ies,
eatin
antennae
ast
RN2H
K
2
DLO
cscs
as
aid
ae
et
RS1P
MM
K
Vhen
there
are
3
effective
digits
(such
as
in
high
precision
metal
film
esistors).
iL62RQ 562 x 10! 5621 ....RN‘%SR BERD F
mark
found
on
some
component
parts
indicates
the
importance
of
the
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
wl designation.
uur
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
kk and *& .
ENERALLY MOVES FASTER THAN *
assification
shall
be
adjusted
by
each
distributor
because
it
depends
on
wumber, temperature, humidity, etc.
sembly (GWE-168)
ORS
art No.
Symbol & Description
Mark
Part No.
Symbol & Description
CDSL 220J 50
KDYF 1032 50
CDCH 020C 50
CDCH 030C 50
CDTH 080D 50
CDCH 100D 50
CDCH 150J 50
CDRH 150J 50
CDRH 330J 50
CDCH 220J 50
CDSL. 150J 50
CDSL 101J 50
CDSL 221J 50
CDSL 271d 50
KDYB 561K 50
KDYB 102K 50
KDYB 182K 50
KDYB 222K 50
KDYB 331K 50
KDYB 821K 50
KDYB 122K 50
<DYB 332K 50
<DYF 4732 50
<DYX 104M 25
3B R47K 500
-DRH O60D 50
<DYB 471K 50
Ci
C2—C4, C12, C13, C20, C21, C108,
C109, C117, C118, C120, C122,
€201-—-C204, C208, C210, C351,
C55
C18
cs
C16,C17,C61,C101
C19
cg
C6,C7,C14,C59,C60
Cis5
C206,C207
C22
C11,C321,C322
C25,C303—C306
C323 ,C324
C47,C51
C114,0115
C48,C52
C49,C50,C110
C329--C332
C340,C341
C313,C314
C362,C363
C23, C24, C27, C31, C32, C36,
C29, C103, C116, C121, C212, C213
C111
C10
C57, C58
C349, C350
CEA OR1M 50L.
CEA R22M 50L
CEANL R33M 50
CEA 1R5M 50L.
CEANL R47M 50
CEA 010M 50L
CEANL R68M 50
CEANL. 010M 50
CEANL 2R2M 50
CEA 2R2M 50L
CEA 3R3M 50L
CEANL 4R7M 50
CEA 4R7M 50L
CEANL 100M 50
CEA 100M SOL
CEA 220M 25L
CEA 470M 25L
CEA 101M 10L
CEA 221M 16L
CEA 471M 6L
CEA 471M 16L
CEA 221M 25L.
CEA 102M 16L
CEA 332M 16L
COSA 431J 50
COSA 511J 50
COMA 562K 50
COMA 153K 50
COMA 473K 50
COMA 103J 50
COMA 183J 50> -
‘ COMA 683J 50
COMA 472K: 50° ©
cs
C33
C38, C347, C348
C107
c40
€28,C53,C54,C355,C346
C209
C39,C333,C334,C352,C353
C301,C302
C45,C46,C364
C105
C317,C318,C366,C367,
C26,C104
C325,C326
C345,C112,C119,C344,C354
C34,C356,C357,C361
C360
C30,C211,C335—C337
C35,C56
C307,C308,C365
C327,C328
C320
C358
C359,C368
C102
C37
C315,C316
C338,C339,C342,C343
C113
C41,C42
C311,C312
C309,C310
C43,C44
Mark
Part
No.
Symbol
&
Description
ACM-014
TC1—CT3
Ceramic
trimmer
ACM-006
TC4
Ceramic
trimmer
ACM-015
TC101,TC102
Ceramic
trimmer
RESISTORS
NOTE:
When
ordering
resistors,
convert
the
resistance
value
Mark
Part No.
into
code
form,
and
then
rewrite
the
part
no.
as
before.
Symbol & Description
RD1/8PM OOO
RD%VM OOO
RD%PM OOO
RD%PMF OODS
RN%PO OOOOF
ACP-056
C92-051
R2—R5,
R7,
R12—R18,
R20,
R23—
R35,
R37,
R38,
R40,
R42—R46,
R48—R51,
R53—R55,
R57—R72,
R101—R120,
R201—R205,
R210—
R224,
R301—R305,
R308—R313,
R320—R323,
R326—R334,
R336—
R348,
R351—R368,
R371—R373,
R375—R392
R306, R307, R374
R1,
R6,
R8—R11,
R21,
R41,
R47,
R206,
R208, R335,
R349,
R350
R19,
R22,
R36, R52,
R324,
R325
R39,R56,R314—R319
VR1
Semifixed
(22k)
VR2
Semifixed
(4.7k)
FILTERS,
COILS
AND
TRANSFORMERS
Mark
22
Part No.
Symbol & Description
ATF-107
ATF-121
ATF-125
ATC-141
ATC-142
ATC-114
ATH-049
ATC-115
ATB-067
ATB-068
ATE-039
ATE-043
F1—F3 FM ceramic filter
F101 AM ceramic filter
F102 Ceramic resonator
1 FM antenna coil
L2 FM RF coil
L3 FM RF coil
L4 RF choke coil
L5 FM OSC coil
L101 AM OSC coil
£102 AM IF coil
T1 FM IFT
T2 FM DET transformer
SEMICONDUCTORS
Mark
Part
No.
Symbol
&
Description
wk* =§=POO1 Qi
ke %& =. 2SC535 02,04,05
we §=JAI01 Q6, 09, 010, 0307, 313, 0314,
(2SA1115/A/) 0317, 0318
(2SA733A)
we 2501923 Q3
**
~=PA3001-A
Q7
k*e =HAT156W-P a8
*&%
=
JC5O1
Q11—-014,
0202,
0203,
0206,
0312
(2SC2603/A/)
(2SC945A)
ke
§
2SK168
Q15
wk
LA1247
0101
wk =. 2SC461 Q102
*k* M54922 Q201
wk = 2SC2603/A/-F Q205
xx 28C1919 Q301—0304
ke NJM4558Dxc Q305
(uPC4558C-P)
*%* ~=PA4008 0306
*% TC4069UBP 0309
*%& == PA5004 0308
*&* = 2SJ74NFRE-BL* Q310,0311
(2SJ74NFRE-V*)
ake == wPC78M12H 0315
ke = HPC78MO5H Q316
*
=
KV1320A-4**
D1
(D1A-D1D)
*& = =KV1226-Y*** D101 (D101A,D101B)
*
§=181555
D3—D7,D302,D303,D305—-D318
(182473)
* = -2-1K 261 D301
A
*®
=~
§=©10E2
D319—D322
(SIBO1—02)
* MzZ-100 D323,D324
(WZ-100)
*
Idss
of
Q310,
Q311
should
have
the
same
value,
**
DI1(KV1
320A-4)
consists
of
four
vari-cap
diodes
with
the
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D1
into
four
pieces
(D1A-
DID),
and
replace
both
of
them
by
new
DIA,
DIB,
DIC
and
DID
at
the
same
time
in
order
to
match
their
characteristics.
***
D101
(KV1226-Y)
consists
of
two
vari-cap
diodes
with
the
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D101
into
two
pieces
(DIOIA
and
DIOIB),
and
replace
both
of
them
by
new
D101A
and
D101B
at
the
same
time
in
order
to
match
their
characteristics.
i
OTHERS
Mark Part No.
**
=
ASG-298
ke = ASG-297
* ASS-016
AKA-017
AKB-078
Switch Assembly
Mark
Part No.
ka
ASH-015
AF
Assembly
(GW!
CAPACITORS
Mark
Part No.
A
CCDSL 221) 5
CCDSL 101K !
CCDSL 030C £
CCDSL 330) 5
CCDSL 470J 5
CCDSL 560J 5
CCDSL O50D £
CQMA 103K 5
COMA 473K 5
CQMA 102K 2
CEA R22M 50
CEA 010M 501
CEA 101M 101
CEA 101M 251
CEA 101M 351
CEA 470M 251
CEA 221M 35L
CEA 471M 6L
CEA 101M 501
ACG-019
ACH-215
RESISTORS
NOTE:
Mark
When ordering
into code form,
Part No.
A
A
23
RDw%PS OOOJ
RD%PSF O00
RD%PMF On
RD%*PM OOo
ACN-114
C92-063
TH103-2

OTHERS SEMICONDUCTORS
Mark Part No. Symbol & Description Mark Part No. Symbol & Description
** ASG-298 $1 Push switch (TUNING) kk 2SA979 01,02
w&* ASG-297 $2 Push switch (TAPE, MONO/ ** 28C2291 Q3,04
MUTE OFF, SUBSONIC, % % = 28A905 Q5,06
LOUDNESS xk* 2SC1915 Q7,08
* ASS-016 X1 Crystal resonator (4.5MHz)
AKA-017 Terminal (ANTENNA) wk 2SA1115/A/-E* Q11-014
AKB-078 Terminal(INPUT, TAPE1, (2SA1115/A/-F*)
TAPE2/ADAPTOR) ** = 28C2603/A/-E* Q9,010,015,016
Switch Assembly
Mark Part No. Symbol & Description
Slide switch (AM CHANNEL
STEP
** ASH-015 $3
AF Assembly (GWK-185)
CAPACITORS
Mark Part No. Symbol & Description
CCDSL 221J 50 Ci,C2
CCDSL 101K 500 C19,C20,C23,C24
CCDSL 030C 50 cg9,C10
CCDSL 330J 50 C5,C6 ;
CCDSL 470J 50 C3,C4,C7,C8
CCDSL 560J 50 C11,C12
CCDSL 050D 500 C13,C14
COMA 103K 50 C21,C22
COMA 473K 50 C27,C28
CQMA 102K 250 C17,C18
CEA R22M S0L C25,C26
CEA 010M 50L C31,C63
CEA 101M 10L C15,C16
CEA 101M 25L C30,C53-—C55
CEA 101M 35L C57
CEA 470M 25L C56
CEA 221M 35L C52
CEA 471M 6L C29
CEA 107M 50L C61
A ACG-019 C60,C62 Ceramic (0.01/AC150V)
ACH-215 C58,C59 - Electrolytic (8200/50V)
RESISTORS
NOTE: When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Part No.
Symbol & Description
RD“Ps OOO
A RD%PSF OOD
A RD%PMF OOO
RD%“PM OOOJ
ACN-114
* C92-063
TH103-2
23
R76,R77,R79—R85
R69—R72
R25, R26, R29—-R34, R41, R42,
R47—R50, R57, R58, R63, R64,
R116, R117, R120, R125
R1—R22, R27, R28, R35—R40, R45,
R46, R5i—R56, R61, R62, R65—
R68, R73—R75, R78, R111—R115,
R118, R119, R121
R43, R44 Wire wound (0.47,2WXx 2)
VR1,VR2 Semifixed (47)
Th1,Th2
(2SC2603/A/-F*)
*hfe of Q9—Q16 should have the same value.
kk
kk
28C2275-Q*
(2$C2275-R*)
2SA985-Q*
(2SA985-R*)
Q17,018
Q19,020
*hfe of Q17—Q20 should have the same value.
Tone assembly (GWG-160)
CAPACITORS
Mark Part No. Symbol & Description
CEA 220M 25L. C32, C33
CEA OR1M 50L C50,C51
CEA R47M 50L C47
CEA 101M 25L C44
CQMA 102J 50 C42,C43
CQMA 822J 50 C40,C41
CQMA 333J 50 C34,C35
COMA 124J 50 C36,C37
CKDY8 152K 50 C45,C46
CKDYB 103Z 50 C48,C49
RESISTORS
NOTE: When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
SEMICONDUCTORS
Mark Part No. Symbol & Description
i % — TD6301P a1
wk TC4049BP Q2
ik* M74LS42P Q3
wk PD6004 Q4
kn 2SA1115/A/-F ag :
kk 2SA1115/A/ 05,07,014,015
*&* = =28C2603/A/ Q6,010—013
* 2—1K261 D1—D7, D30
* = AEL-378 Ds
* 181555 Dg
(182473)
* = =6 AEL-376 D10,011,D13—D15,D27
* =AEL-377 D12,D28,D29
* AEL-365 D16—D23,D26
* AEL-351 D24,D25
OTHERS
Mark Part No. Symbol & Description
* ASS-017 x1 Cerarnic resonator (SOOkHz)
Mark Part No. Symbol & Description
* ACT-138 VR3_ Veriable (BASS)
* ACT-139 VR4 Variable (TREBLE)
* =ACT-028 VR5 Variable (BALANCE)
RS1P 102J R110
RD%PM OOOJ R86—R109
SEMICONDUCTOR
Mark Part No. Symbol & Description
kk TA7318P-A Q30
(TA7318P-1)
Control Assembly (AWX-220)
CAPACITORS
Mark Part No. Symbol & Description
CEA 100M 50L C1
CKDYB 102K 50 C3
CKDYB 391K 50 C2
CEA 101M 25L c4
RESISTORS
NOTE: When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Part No. Symbol & Description
kk 2SC1914A Q21,Q22
*k* JC501 Q23,024
(2SC2603/A/)
(2SC1815BL)
x* 28D438-F Q25
(28C1384)
*&* = =§=2SD836A 026
kk 2SB507 Q27
(2SB834)
*&*k = =~=2SD880 Q28
(2SD313)
kk JA101 Q29
(2SA1115/A/)
(2SA1015)
* 181555 D1—D4,D17,D24,D27
(182473)
A * 182473 D5—D8
* 182471 D13—D16,D21,D22
* W2Z-046 D9—D12
(MZ-047)
* MzZ-150 D018
* MZ-192 D19
(WZ-192)
* W2Z-290 D20
* KZLO56 D23
A *® = 10E2 D26
(SiBO1—02)
A * ~ RB602 D25
STV2H-O D28,D29
OTHERS
Mark Part No. Symbol & Description
¥%% = ASG-299 $1 Push switch (SPEAKERS)
5 a ASR-033 RL1 Relay
AKE-103 Terminal (SPEAKERS A,B)
ABA-258 Screw (for heat sink of D25)
RD1/8PM OOOS
R1, R2, R6—R21, R23—-R34, R36—
R43, R45, R46, R48—R55, R57—
R59 R61, R638—-R67, R70, R71
R3, R5, R22, R47, R6O, R62, R68,
R69 ;
A RDY%PMF OOO R35
RD“PM OOO
24
wx = =ASG-177
$1—S19 Tact switch (VOLUME,
MUTING, PRESET, TUN-
ING, MEMORY/STOP,
STATION CALL 1 — 8,
FUNCTION)
Headphones Jack Assembly
Mark Part No.
AKN-030
Symbol & Description
Phones jack (PHONES)

9. PACKING
Mark No. Part No.
1. ARB-437
2. AHA-300
3. AHA-301
4. ADH-004
5. AAN-028
6. AHD-952
10.
EXPLODED
VIEWS
Interior Components !
Description
Operating instructions
e
Parts
without
part
number
cannot
be
supplied.
«
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 ** and k .
*&* GENERALLY MOVES FASTER THAN «x
(English)
Side
pad
L
This
classification
shall
be
adjusted
by
each
distributor
because
it
depends
on
model
Side
pad
R
number,
temperature,
humidity,
etc.
FM T-type antenna
Station
card
Mark
No.
Part
No.
Description
Mark
No.
Part
No,
Description
Packing
case
1.
ABA-193
Screw
-
43.
AAD-403
Knob
(AM)
2.
ANE-360
Top
cover
-
14
AAD-404
Knob
(MEMORY/STOP)
3.
ANR-450
Slider
assembly
15.
ANR-408
Display
cover
4. AAD-406 Knob (POWER)
5.
AAD-405
Knob
16.
AAB-274
Knob
(BASS,
TREBLE,
BALANCE)
6.
VBZ30PO60FMC
Screw
(3X6)
17.
AEC-178
Foot
assembly
7.
ANM-064
Front
panel
assembly
.
18
VTZ40P100FMC
Screw
(3X
10}
8.
YE40FUC
E
type
washer
$4
19.
BBZ26PO50FMC
Screw
(2.6X
5)
9. ABH-088 Coiled spring
10. AAD-407 Knob array 101. Flexible joint
102. . Bottom plate
11.
AAD-401
Knob
(TUNING)
103.
Plate
12, AAD-402 Knob (FM)
25
26

Parts List of Interior Components
Mark No Part No. Description Mark
1. VBZ30PO60FMC Screw (3X6) A
A we 2. AEK-103 Fuse (2A)
3. BMZ40PO080FZB Screw (4X8)
4. GWK-185 AF assembly
5. ABA-234 Screw (3X 12)
A¥% 6. ASG-521 Push switch (POWER)
A 7. ACG-001 Ceramic capacitor
8. ABN-048 Nut (M9)
9. VMZ30PO60FMC Screw (3X6)
10. ABN-028 Nut
11. AWX-220 Control assembly
12. AANV-305 Level meter assembly
13. BBZ30PO60FZK Screw (3X6)
A* 14. ATT-841 Power transformer
A 15. ACN-029 Carbon composition resistor
A 16. AKP-039 AC socket (AC OUTLETS)
A 17. ACG-017 Ceramic capacitor
A** 18 AEK-108 Fuse (5A)
19. VTZ40P100FMC Screw (4X 10)
20. GWG-160 Tone control assembly
21. AEC-818 Insulator
A**% 22. 2SA1104/A/-Y* Power transistor
(28A1104/A/-O*)
(2SA1104/A/-P*)
A** 23. 28C2579/A/-Y* Power transistor
(28C2579/A/-O*)
(2SC2579/A/-P*)
*hfe of 2SA1104/A/ and 2SC2579/A/ should have the same value.
24.
25.
26.
27.
28.
29.
30.
31.
ABA-258
GWE-168
AXC-013
AKB-076
BBT30P080FZK
MTZ30P100FZK
PMZ30PO60F ZB
ABA-176
Screw
Tuner assembly
Battery case assembly
Terminal (AM STEREO OUT)
Screw (3X8)
Screw (3X 10)
Screw (3X6)
Screw
)
No. Part No. Description
32. ADG-052 AC power cord
33. AEC-327 _ Strain relief
34. ATB-631 Bar antenna assembly
35. ANR-432 Case cover
36. WA35F100NO080 Washer
101. Fuse holder assembly B
102. Ground terminal 2-P
103. Side frame L
104. Panel stay
105, P.C. Board spacer
106. Mounting plate
107. Clamper
108. Heat sink holder
109. Wire saddle
110. Headphones jack assembly
111. Transformer frame
112. Rear panel
113. P.C. Board holder A
114. Fuse holder assembly A
115, Heat sink
116. P.C. Board holder B
117, Side frame R
118. Switch assembly
119. Terminal (GND)
29

11. ADJUSTMENTS
FM Tuner
° Connect the FM signal generator (FM SG) to the FM ANTENNA 3002 terminal through a 3000
dummy antenna.
e Set the AUTO/MANUAL switch to the MANUAL position, the FM (FUNCTION) switch to the ON
position and the MODE MONO (MUTE OFF) switch to the MONO (MUTE OFF) position.
(#1)
(#2)
Tune the FM SG to the SX-6.
Connect the FM multiplex stereo signal generator to the FM SG external modulator terminal. Set
the modulation to Main 1kHz/L+R/+67.5kHz deviation, Pilot 19kHz/+7.5kHz deviation.
FM SG(400Hz,+75kHz deviation)
Frequency Level
SX-6
Frequency
display
Adjustment
point
Adjustment procedure
No signal
87.50MHz
L5
7.2V DC between terminal no.7 and ground.
No signal
108.00MHz
TC4
24V DC between terminal no.7 and ground.
Repeat steps 1 and 2 until both specifications are correct.
90.0MHz (*1)
60dB
90.00MHz
L1,L2,L3
106.0MHz (*1)
98.0MHz (*1)
98.000MHz
98.000MHz
60dB
106.00MHz
Repeat steps 4 and 5 until maximum sensitivity: i
98.00MHz
98.00MHz
98.00MHz
TC1,TC2,TC3
s attained.
T2 (DIST)
Repeat steps 8 and 9 until both requirement are satisfied.
Adjust until DC voltage between terminal no.46
and ground is maximum.
Adjust until DC voltage between terminal no.46
and ground is maximum.
T2
(CENTER)
|
OV
DC
between
terminal
no.
44
and
no.45
minimum.
Adjust until distortion at TAPE 1 REC terminal is minimum.
Set the MODE MONO switch to the STEREO position.
98.0MHz (*1)
60dB (not
modulation)
98.00MHz
VR2
Adjust signal at terminal no.11 to 19kHz (£100Hz).
98.0MHz (*1)
60dB
| .
Set to stereo modulation (*2)
98.00MHz
T1
(within +90°)
Adjust until distortion at TAPE 1 REC LorR
terminal is minimum.
98.0MHz (*1)
30
31dB
Set to stereo modulation (*2)
98.00MHz
VR1
Obtain a position just prior to activation of the
muting circuit and light up the STEREO indicator.