Realistic STA-235B User manual

ruLtstC.
Serulce amuafl
ADDENDUM
for STA-235B
AM /FM STEREO RECEIVER
Gatalog Number:31 -2065
This ADDENDUM covers the changes made for "B" version of the STA-235.
For complete coverage of this model, you must refer to both this ADDENDUM and the
original Service Manual for the STA-235.
cusroM MANUFACTURED FoR RADto sHncr[A DVtstoN 0F TANDv coRponAloN

CONTENTS
1 . SPECIFICATIONS 2
2. BLOCK DIAGRAM 3
3. ALIGNMENT PROCEDURE 4
4. ALIGNMENT POINTS 5
5. TROUBLESHOOTTNG ............. 6
6. TUNEB BOARD OO42 .......... .............7 - I
7, MAIN AMP BOABD OO45 9
8. TONE AMP & AUTO-M BOARD 0043 ........ ..... 10
9. ELECTRICAL PARTS LIST .......11 _ 18
10. M|SCELLANEOUS PARTS L|ST ......... ............... 19
11. SCHEMATIC DIAGRAM ......... .SEPARATE SHEET
1. SPECIFICATIONS
The specifications of STA-2358 are the same as STA-235 except for output voltage of FM
section.
FM SECTION
13. OUTPUT VOLTAGE
(at 75 kHz dev., 400 Hz mod., 1 mV input)
NOMINAL LIMIT UNIT
STA.235
STA.235B
0.9
o.7
0.913 dB
0.713 dB
V
V

2. BLOCK DIAGRAM
sl:)Els
o-tr
h
Gtr
h
t-,
IE
e r,P
3 ='E-A9=
- x662
6EH--ii q
PFgSsli
9I
: - - -?. ,
2 n D d ? iln r so
e 5 + * + + E e = +3 E EE
Irn]
3
E-r
rPF

3. ALIGNMENT PROCEDURE
AM RF AND IF ALIGNMENT
Not changed
FM RF AND IF ALIGNMENT
Adjustment points of Steps 4,5,6 and 7 should be changed.
MPX ALIGNMENT
FM ANTENNA
TE RM INAL
(300s,)
ALIGNMENT CONNECTION
Adjustment points of Steps 1,3 and 4 should be changed.
TAPE OUT
STEP ADJUSTMENT Refer to Fig. 4
STA-235 STA.235B
4
5
6
7
L203 (Pink core)
L203 (Blue core)
vR202
VR2O1
T201 (Bottom)
T201 (Top)
VR201
vR202
101. l-102
103, L104
T101, TC101
TC102, TC103
TC104
FM SIGNAL
GENERATOR FM DUMMY
ANTENNA
300a
STEREO
MODULATOR
STEP ADJUSTMENT Refer to Fig. 4
STA-235 STA.235B
1
3
4
VR3O2
VR301
VR3Ol
VR301
VR3O2
VR3O2
4

4. ALIGNMENT POINTS
t
r. t €
o
@
E
: i: a,
',.,. i ti tai
eI
t
E
o
@
ts
N
e
sl
o
sl
o
F'
E
6l
o
oe
e
o
(\l
E
N
c,
N
E
6
<l
cl
<l
ts
\ r :i$
N m hN F N @ m sf $
o o c, o o oct o o o o o o o o
tf st sl
J L ts (J (J (-)(.) c.! J J C' J (J F J
Fig.4

5. TROUBLESHOOTING
Refer to page 14 and 15 of STA-235 Service Manual.
The following items should be changed.
Symptom Cause and Remedy
13) FM does not operate. E) Delete
G) Delete
H) Defective lC 1C201
Replace the lC.
l) Defective IFT T101 orT2O1
Replace the defective components.
J) Defective resistor R2O1, R2O2, R203, R2O4, R205,
R206, R208, R209, R213, R219 or R22O
Replace the defective resistor(s).
K) Defective capacitor C203, C112 or C2O1
Replace the defective capacitor(s).
L) Defective transistor TR101 ,TR102, TR103 0r
coil L101 , L1O2, L103, L104 of Tuner Board
oo42
Replace the defective component(s).
14l, Poor multiplex separation. B) Transistor TR301, TR302 or 1C301 of Tuner
Board 0042 defective
Replace the defective component(s).
15) Stereo indicator does not
light. C) Defective lC lC30'l or resistor R321
Replace the defective component(s).
16) FM volume not sufficient. A) lf volume of both L and R channels not
enough: Front-End defective or faulty lC
1C201, 1C301 or capacitor C227, C301 of
Tuner Board 0042
Locate and replace the defective component(s).
B) lf sound of one channel not enough: Defective
LPF301 or TR301 in case of L channel, or
defective LPF302 or TR302 in case of R channel
Replace the defective component(s).

TUNER BOARD OO42 (TOP VIEW)

TUNER BOARD OO42 (BOTTOM VIEW)

MAIN AMP BOARD OO
li:*iii*s,,i:tiil
MAIN AMP BOARD OO4I
lr:a:i.1ltr,iGri:.::,:!r,i1':r:i1r:31u1ii:t,,::,r!1',:1.,ir,
,t,l:rl.r.iitrar1;i:1.r:iilrl:i:ilqa.t:tiltitt::jrlti:e:i
!rl!r::!i:lli;alilil;ri,ilrq:.1{::i11lli]i:lljl;
ilit'
tLt6'
'rir lr.;, r{. i;i t

BOARD 0045 (TOP VrEW)
,,$j*i, f$gll:$i
OARD OO45 (BOTTOM VIEW)

TONE AMP & AUTO-M BOARD O(
TONE AMP & AUTO.M BOARD OO4
12a.,:::::.
c
{ Feo?b
[a:] F905b
ie
820i

r BoARD OO43 (TOP VIEW)
18 .,::t:,. 7t
8902a 820N
ilos 6.8(
agk 39X
iso& 2rX
t9@,
3OARD OO43 (BOTTOM VIEW) SELECT.R
tir
B
.a:aa.::.
10

ELECTRICAL PARTS LIST
CAPACITORS
Ref. No. Value
(F) Voltage
(v)
Toler-
ance
%t Material
c1 01
cl 02
cl 03
cl 04
c1 05
c1 06
c1 07
cr 08
cl 09
cr 10
cl1l
c112
c113
c114
c1 15
c1 16
cl17
cl 18
c119
c1 20
cl21
c122
c201
c206
c210
c211
c212
c213
c214
c21 5
c2r 6
c217
c21 I
c21 I
c202
c203
c204
c205
c207
c208
c209
15P
0'0",22tt
0.5P
1ql
12P
3P
10P
300P
0.0,22tt
7P(TH)
10P
24P(UJ)
33P
10P
0.022p
33p
0.47 p
0 9,,,
10P
1 000P
oo:,ou
0.47 p
270P
,u,,
10p
1p
1 000P
,i:,,
lop
25
50
25
50
25
50
25
12
50
50
25
50
50
16
50
25
16
tl0
+80
-20
tl0
t0.25P
tl0
t0.5P
tl0
tb
tl0
'10
+80
-20
+75
-10
110
+75
-10
+80
-20
+80
-20
+50
-10
+75
-10
+80
-20
+50
-10
+75
-10
tl0
+80
-70
-UO
-r0
Ceramic
Electrolytic
Ceramic
Electrolytic
Ceramic
Electrolytic
L,,,,,,
l::
I
| ,,,,,,0,r,',
11
Ref. No. Value
(F) Voltage
(v)
Toler-
ance
%t Material
c220
c221
c222
c223
c224
c225
c226
c227
c228
c22g
c230
c301
c302
c303
c304
c305
c306
c307
c308
c309
c31 0
c3l 1
c312
c313
c401
c402
c403
c404
c405
c406
c407
c408
c40g
c41 0
"lp
4.7p
0.04p
0.04p
4.7 p
0.47p
1p
0.04p
33p
lop
4.7p
360P
3.3p
1.5p
0.047 p
1 200P
,o:
699P
0.47 p
,:
0.01rr
1op
220p
0.0"22p
4.7 p,
0.04p
0.039p
lop
0.022tt
50
16
25
25
q9
25
16
50
25
16
25
50
25
50
16
50
50
25
16
r0
25
+80
-20
+75
-1,0
+80
-20
+80
-20
+50
-10
+75
-10
+50
-10
rl0
+50
-10
tl0
+75
-10
+75
-10
t5
+75
-10
+80
-20
+50
-10
+80
-20
+75
-10
+80
-20
tl0
+50
-10
+80
-20
Ceramic
Electrolytic
Ceramic
Electrolytic
Ceramic
Electrolytic
Electrolytic
Ceramic
Electrolytic
Polyester
Ceramic
Electrolytic
Ceramic
Electrolytic
Ueramrc
Electrolytic
ueramrc
Electrolytic
Ceramic
Polyester
Electrolytic
Ceramic

Ref. No. Value
(F) Voltage
(v)
Toler-
ance
%t Material
c41 1
c412
c413
c414
c41 5
c41 6
c417
c41 I
c419
c420
c421
c422
c423
C501a,b
C502a,b
C503a,b
c504
C505a,b
C506a,b
c507
C508a,b
C601a,b
C602a,b
C603a,b
C604a,b
C605a,b
C606a,b
C607a,b
C608a,b
C609a,b
C610a,b
C61 I a,b
c551
c552
c553
c554
c555
c556
5P
390P
0.01s
4.7p
0.0,22p
3.3p
1p
0.22tt
1p
22P
4.7p
47p
3.3p
120P
22p
1 00p
1 500P
5600P
1 00p
0.47p
56P
1p
,o:
10P
100p
47p
0.001p
1 00P
0.01p
0.056rr
0.22p
0.01p
50
25
50
16
50
25
16
50
16
50
16
50
25
50
25
50
35
25
500
50
500
t0.5P
t5
+80
i?g
-10
+80
-20
+75
-10
t20
+75
-10
tl0
+75
-10
+50
-10
rl,0
+50
-10
+75
-10
+75
-10
tl0
+50
-10
+80
10
*J0
+80
-20
t10
+75
-10
+50
-10
tl0
+50
-10
tl0
Ceramic
Electrolytic
Ceramic
Electrolytic
Ceramic
Electrolytic
Electrolytic
Ceramic
Electrolytic
Polyester
Electrolytic
Ceramic
Polyester
Ceramic
Ceramic
Electrolytic
Ceramic
Electrolytic
"rri,t
Ref. No. Value
(F) Voltage (v) Toler-
ance
%t Material
C61 2a,b
C61 3a,b
C614a,b
c701
c702
c703
c704
c705
C731 a,b
C732a,b
C733a,b
C734a,b
C735a,b
C736a,b
C7 51a,b
c801
c802
c803
c804
c805
c81 0
c81 1
c8r 2
c851
c852
c853
c854
c855
c856
c857
c858
C901a,b
C902a,b
C903a,b
C904a,b
C905a,b
0.1r,,
2P
5P
0.02tt
0.47p
1 0rr
22p
1 00p
0.01p
0.12p
8200P
,,,,
2.2p
0.022tt
47p
4.7p
,i:,
lop
1 000p
0 9,,
'::*
0.0047p
o',,,'u
0.47 p
lop
10P
Not Used
2.2p
50
500
50
25
50
16
l0
50
25
25
16
25
50
50
125
500
50
16
50
25
tl0
r0.5P
+80
-20
+75
-10
+50
-t:,0
,):,0
+75
-I0
+80
-20
+50
-10
+75
-10
+50
-!:,0
+50
;18
-20
+50
-10
x20
tl0
+75
-10
+50
-10
tl0
+75
-10
Polyester
Ceramic
Ceramic
Electrolytic
Polyester
Electrolytic
Ceramic
Electrolytic
Electrolytic
Ceramic
Electrolytic
Polyester
Ceramic
Electrolytic
Ceramic
Electrolytic
12

Ref. No. Value
(F) Voltage (v)
Toler-
ance
%t Material
C906a,b
C907a,b
C908a,b
C909a,b
C910a,b
C911a,b
C9 I 2a,b
C913a,b
C914a,b
C915a,b
c91 6
cgl 7
1 80P
1 800P
3300P
6800P
0.039p
0.033p
3300P
1p
2.2p
10P
220p
330p
50
25
50
25
t10
+75
-10
tl0
+50
-10
Ceramic
Polyester
Electrolytic
Ceramic
Electrolytic
DIODES
Ref. No. Type No. R/S
Part No. Mf r's
Part No. Manufacturer
D 101
D102
0201
D202
D203
0204
0205
0206
D207
D209
0301
D302
D401
D60I
D602a,b
D603a,b
D801
0802
0803
0804
D805
D806
0807
0808
0809
081 0
D8l 1
081 2
081 3
0851
0701
D702
1 52687
152473
1 N6OP
r s2473
KB1 62
,u,,!:,
1 N6()P
Not Used
1 52473
1 N60
1 S2473
w03c
RDllE
w03c
STV-3H
Not Used
w03c
55VB-20
rx-0302
rx-0299
lx-0162
rx-0r 62
rx-0299
lx-0299
DX-0685
rK0299
rx-0299
DX-0299
DX-0299
DX-0299
DX-0r 62
DX-0299
DX-0299
D)(0161
DX0299
DX-0525
DX0405
DX-0525
DX-0525
DX-0525
DX-0525
DX-0525
DX.O52E
DX-0525
DX-044i
30600560
3060041 0
3060001 1
3060041 0
30600500
3060041 0
3060001 1
3060041 0
306000r 0
3060041 0
3060087 1
30600752
3060087r
30600881
30600871
30600981
JRC
Toyo Electronics
UNISON
Toyo Electronics
UN ISON
Toyo Electronics
UN ISON
Toyo Electronics
UN ISON
Toyo Electronics
Hitachi
NEC
Hitachi
San ken
Hitachi
Shindehgen
CERAMIC FILTERS
Ref. No. Description R/S
Part No. Mf r's
Part No.
cF201
cF202
cF203
cF401
FM IFT SFEl().7MA
,,
,,
AM IFT CFT455B
c-0546
c-0546
3530001 2
35704061
COILS & TRANSFORMERS
Ref. No. Description R/S
Part No. Mf r's Part No.
Lt 01
L1 02
Ll 03
L1 04
Ll 05
1201
1401
1402
1451
L601a,b
L80l
T1 01
T201
,t;:u,
FM ANT. Coil 129A
FM RF Coil 1278
" 1288
FM OSC Coil 1l4L
Choke Coil
Choke Coil 180J
AM RF Coil 122B
AM 0SC Coil4l5L
AM Bar Antenna Coil
Choke Coil 8pH
" 33pH
FM IFT 2(]7A
FM IFT 221 D
Power Transf ormer (U L)
,, (CSA)
" (Europe/Australia)
cA-3865
cA.4906
cA-4907
cA.4565
cB-2121
c-071 3
cA-4753
cA-4755
cA-0290
cB-2299
cA-3100
cA-7830
cA-7831
TA-0580
35501 291
35501272
3550 1 282
35501 146
35500070
3550031 0
35501222
355041 56
354005r 1
355001 70
355001 60
3570207 1
35702214
35900206
3590021 7
3590021 I
FI LTERS
Ref. No. Description R/S
Part No. Mfr's
Part No.
LPF3()l
LPF3()2 Low Pass Filter BL-21E c-0864 35000080
13

INTEGRATED CIRCUITS
Ref. No. Type No. Part No. Manufactu rer
r c201
r c30r
tc401
lC50l a,b
r c701
1A1230
HAr 1 96
pPC30C
NJM4558D.D
NJM4558D
30900380
3090041 0
30900350
30900363
30900361
Sanyo
Hitachi
NEC
JRC
JRC
RES ISTORS
Ref. No. Value
(,o) Wattage (w)
Toler-
ance
%l Material
R 101
R 102
R 103
R 104
R 105
R 106
B 107
R 108
R 109
R110
R111
R112
Rll3
R114
R115
R 151
R201
R202
R203
R204
R205
R206
R207
R208
R209
R21 0
R211
R212
R21 3
R214
8215
R21 6
R217
R21 B
R21 I
R220
R221
R222
R223
R224
R225
R226
R227
R228
R229
R230
R23 1
R232
R30r
R302
R303
R304
R305
R306
R307
R308
R309
R? 1n
68K
150
82
3.3K
22K
1K
12K
10K
2.7K
100
560K
330K
390K
100
220
1K
3.3 K
560
330
10
390
100
10K
220
180
1 50K
r.5K
220K
180K
15K
47K
1 80K
21K
180K
3.3K
2.2K
6.8K
100K
22K
100K
27K
220K
10M
2.zlti
12K
Not Used
220K
100
1.8K
5.6K
22K
1K
31,*
u;l*
39K
114
114
114
t5
+E
t5
Carbon
Carbon
Carbon
LAMPS
Ref. No. Description R/S
Part No. Mf r's Part No.
PLl
PL2
PL3
PL4
PL5
Dial Lamp 8V 0.3A
,,
t,
Meter Lamp 8V 0.254
,,
L-0718
x-7338
37008041
3700801 I
LIGHT EMITTING DIODES
Ref. No. Type No. R/S
Part No. Part No. Manu-
factu rer
B75r
D752
D753
D754
D755
0756
G D.4-203 R D)x-074; 8A211-49064A Stanley
METER
Ref. No. Description R/S
Part No. Mf r's Part No.
M1 TUNING Meter M-031 56020001 I
RELAY
Ref. No. Description R/S
Part No. Mfr's
Part No.
R L8()1 Relay 264D02404CS R-8083 82000060
14

Ref. No. Value
(o) Wattage
(w)
Toler-
ance
P/"1
Material
R31 1
R31 2
R313
R314
R31 5
R31 6
R31 7
R31 I
R319
R320
R321
R322
R401
R402
R403
R404
R405
R406
R407
R408
8409
R41 0
R41 1
R412
R4r 3
R414
R41 5
841 6
R41 7
R4r I
R41 I
R420
R421
R501a,b
R502a,b
R 503a,b
R504a,b
R505a,b
R506a,b
B 507a,b
R508
R509
R510a,b
R601a,b
R602a,b
R603a,b
R604a,b
B605a,b
R606a,b
R607a,b
R608a,b
r00K
3,;3K
220K
2.2K
3.3K
390K
2.2K
3.3K
390K
1K
1 00K
100 K
3.9K
1.8K
2.2K
390K
68K
82K
47K
10K
560
10K
22K
Not Used
680K
3.3 K
330
1 00K
15K
390
1.8K
2.2K
1 00K
1 00K
1.5K
820
750
47K
560K
1;9K
1 00K
270K
2.2K
220K
1;PK
33K
l0K
2.7K
114
114
114
114
114
t5
t5
t5
t5
t5
Carbon
Carbon
Carbon
Carbon
Carbon
No.Ref. Value
(o) Wattage (w)
Toler-
ance
P/'l Material
R609a,b
R610a,b
R611a,b
R61 2a,b
R613a,b
R614a,b
R615a,b
B616a,b
R61 7a,b
R618a,b
R61 9a,b
B620a,b
B621a,b
R622a,b
R623a,b
R624a,b
R625a,b
R626a,b
R627a,b
R628a,b
R651 a,b
R701
R702
R703
R704
R705
R706
R707
R708
R709
R710
R71 1
R712
R71 3
R714
R71 5
R716
B7l7
R718
R71 I
B731a,b
R732a,b
R733a,b
R734a,b
R735a,b
R736a,b
R737a,b
R738a,b
R739a,b
R740a,b
R741a,b
R742a,b
R751a.b
1 00K
3K
5.6 K
6.8K
2.2K
r00
1K
100
300
100
300
t5
1;?K
0.47
470
47K
470K
19K
1 00K
680
820K
2.7K
10K
2.2K
33K
12K
t0K
330 K
1.8K
3.3K
1.5K
470K
10K
5;9K
2.ztrii
6.8 K
47K
4.7K
820K
47K
10
10
22K
820
114
E
1
3
2
114
114
t5
tl0
t5
t5
r5
t5
t5
Carbon
Wire Wound
Metal
Wire Wound
Metal
Carbon
Carbon
15

Ref. No. Value
(o) Wattage
(w)
Toler-
ance
%l Material
R80t
R802
R803
R804
8805
R806
R807
R808
R809
R81 0
R81 1
R81 2
R813
R814
B8r 5
R81 6
R81 7
R851
R901a,b
R902a,b
R903a,b
R904a,b
R905a,b
R906a,b
R907a,b
R908a,b
R909a,b
R910a,b
B911a,b
R912a,b
R913a,b
R9l4a,b
R91Sa,b
R916a,b
R917a,b
R918a,b
R919a,b
R920a,b
R921a,b
R922a,b
R923
R924
470
10K
220K
27K
39K
2!,K
220
27K
1.2K
2tK
1.2K
220
2.2K
l0
1.8K
2.zvi
3.3K
820K
4.7 K
39K
6.8K
22K
3.9K
Not Used
a:!K
6;9K
lTK
220K
1M
4.7K
Not Used
1 00K
100
1K
15K
1
114
1
114
112
114
114
114
t5
tl0
t5
t5
t5
Metal
Carbon
Solid
Carbon
Carbon
Metal
Carbon
Carbon
SWITCHES
Ref. No. Description H/S
Part No. Mf r's
Part No.
SI
s2
S3
s4
S5
S6
s7
S8
s9
sl0
s11
sl2
POWER/SPEAKERS
SE LECTO H
TAPE MONITOR 1
,r2
FM 25pS
MONO
LOUDNESS
FI LTE R_H I
FI LTER_LO
AUTO-M
PHONO LEVEL
Thermal Protector (UL)
,, (CSA)
s-0839
s-0781
s-0782
s-0783
s-223r
HB-5r 16
27 1 001 38
27100137
27200088
27200089
27300008
307001 90
307001 60
THERMISTOR
Ref. No. Description R/S
Part No. Mfr's Part No.
TH201 sDT-1 000 30700200
16

TRANSISTORS
Ref. No. Type No. Part No. Manufacturer Substitute
Type No. Manufacturer
TRlOI
TR 102
TR 103
TR20l
TR2(]2
TR2()3
TB2()4
TR205
TR3Ol
TR3O2
TR4Ol
TR402
TR4O3
TR4O4
TR601a,b
TR602a,b
TR603a,b
TR604a,b
TR60Sa,b
TR606a,b
TR607a,b
TR608a,b
TR609a,b
TR61Oa,b
TR70l
TR702
TH801
TR8(]2
TR803
TR8()4
TR805
TR806
TR8()7
TR8()8
T R901a,b
TR902a,b
TR903a,b
3SK45 (B or C)
25C 1 674
25C1 675( L)
25C930(D)
25C536(F)
2SA733 (P or 0)
2SC536 (F)
25K44 (B or C)
25C536(F)
2SA841 (BL)
2SC1 951
21C1567(R)
2SC945( L-P)
2SA733(0 or P)
2SA794(R)
2SD426(0)
25C2021
2SD+,71(K or l)
2SD43B(E or F)
2SCg,45(L.P)
258560(E or F)
2SA733(0 or P)
2SC945( L-P)
250438(E or F)
250330(E)
25Ct681 (BL)
2SA841(BL)
2SC1681(BL)
30400071
30201 1 1 1
30201121
30200211
302001 31
30000425
302001 3 1
304001 03
30200 1 3 1
30000422
30201 261
30201 023
30201 031
30000423
3000041 3
30300291
30201 323
30300280
30300250
30200522
301 00041
30000423
30200522
30300250
30300r 92
3020 1 1 32
30000442
30201 132
Hitachi
NEC
NEC
Sanyo
Sanyo
NEC
Sanyo
Sanyo
Sanyo
Toshiba
SONY
Matsushita
N-EC
Matsushita
Sony
Toyo Electronics
N-EC
Sanyo
N-EC
Sanyo
N-EC
Sanyo
Sanyo
Toshiba
35K41 (Korl)
25C945( L-P)
25C945 (L-P)
2SC945( L-P)
,,:,
254640(E)
25C1124(21
25C536(F)
2SA706(2)
25C1 509( R)
2SC536(F)
2SA777 ( R )
25C536(F)
25C1 509(R)
2SC1 061 (B)
2SC1222lEl
25A640(E)
2SC1222lEl
NEC
N-EC
NEC
NEC
NEC
Matsushita
Sanyo
Matsushita
Sanyo
Matsushita
Hitachi
N-EC
Sony
Sanyo
Sony
17

VARIABLE CAPACITORS
Ref. No. Description R/S
Part No. Mf r's
Part No.
vcl 01
TCl 04
Tuning Gang G774J1 18
(lncludes TC1 01 -TCl 03,
TC105-TC107
Trimmer
ECV.1ZW1()P32
c-451 6
c- 0424
26370081
2601 0023
Ref. No. Description R/S
Part No. Mf r's
Part No.
VR4(]1
VR4()2
V R601a,b
V R901a,b
V R902a,b
V R903a,b
V R951-1a
VR951-2a
vR951-t b
v R951-2b
WIDE-BAND AM
Sensitivity 10ko/B
AM 0utput Level
Control 50ko/B
Bias Control 1kQ/B
TREBLE lO()KO/B
MrD 100ko/B
BASS l ()()KO/B
V0 LUME-L channel
200ko/B
V0 LUME-L channel
200ko/B
V0LUME-R channel
200ks}/B
V0LUME-R channel
200ko/B
P-6367
P-6369
P-6247
P-5006
P-1699
281 00061
281 00096
281 00037
280001 30
28200020
VARIABLE RESISTORS
Ref. No. Description R/S
Part No. Mf r's Part No.
VR2()1
vR202
VR30l
VR3O2
Auto Stereo & Muting
Sensitivity 100ko/B
FM Signal Meter
Sensitivity 100kSl/B
76kHz Frequency
Adjust 10k0/B
MPX Separation
100ko/B
P-6368
P-6368
P-6367
P-6368
281 00063
281 00063
281 00061
28r 00063
COMPLETE PCB ASSEMBLIES
Ref. No. Description R/S Part No. Mfr's Part No.
5030
0042
0043
0045
6044
8030
7126
7127
EO AMP BOARD
TUNEB BOARD
TONE AMP & AUTO-M BOARD
MAIN AMP BOARD
AUDIO DRIVER AMP BOARD
POWER SUPPLY BOARD
LED INDICATOR BOARD
METER LAMP BOARD
x-7609
x-7608
x-7611
x-7610
x-7614
x-7612
x-7248
x-7338
9750301 0
97004240
97004320
97004540
9760441 0
97803020
97712610
97712710
18