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
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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,
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se
so
SHES
Tien“
&
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Ne
f=
A
1 125 ase:
ALK!
|
AC
POWER
CORD
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OR 4 Se BERN | a ees eee
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[
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
: :
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we
‘06
25C2603
“CS i. ie ie
{000P~ 913252603