Main Printed Circuit Board - Fisher TAC-M82 Service Manual

Lw/mw/fm stereo double cassette receiver, black/white
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MAIN PRINTED CIRCUIT BOARD
(BOTTOM VIEW)
j :
bias
IC PIN NUMBERS DC VOLTAGES
SYMBOL No.[ Device [ 1 [ 2 | 3] 4 [7 5 76 777s Tas TwpT ate Ts Tw
6 Te [7 7 eT 9 7 20 |
LAG458
=15.1V
mev[
|
CT CCT EC
CC
(e302
| TC9i52P
14.4V
=15.9V
13.6V | OV
a
Be
ee eee ee
' NOTES:
The 1C305 (Dolby IC CXA1101P) on the Main P.C.B. Assy of TAC-M82 is changed
to HA12136 from the lot number of 4,001. With this IC change, the Main P.C.B.
Assy is changed as follows.
f
Differences
1 ~ 4,000
4,001 and after
620 192 4589
620 192 4367
IC HA12136
Main P.C.B. Assy}
620 187 3290
Main P.C.Board
1C305 (Dolby IC)
C397, 398
620 187 2941
IC CXA1101P.
R439, 440
39kO. 1/6W
Headphone
P.C.B. Assy
620 187 3351
620 192 4602
TRANSISTOR DC VOLTAGES
[SYMBOL No] Device | B | C | € [SYMBOL No| DEVICE | B | C | E |
| aor | 2sc2s7e[ ov | ov | ov | 0332 | 2scs36 | 22v | 7.3V | 1.6V |
| 0302 | 2sc2678 | ov | ov | ov | 0333 | 2spioi2 | o6v | OV | OV |
|_0303 | 2sca400 | ov | 14.4V] ov | a334_ | aspioi2 | o6v | ov | Ov |
| 0304 | 2sca00| 47v | ov | ov | 0335 | sca400| OV | 36V[ OV |
| 0305 | asca4o0 | 47v | ov | ow | 0336 | 2sc536 | o6vV | OV | Ov |
| 0306 | 2sca400 | ov | 4ov | ov | sar | 2sc536 | o.6v | O2v[ OV |
| 0307 | scs36 | ov | ov | ov | 338 | 2sca400] ov | ov | Ow |
| 0308 | scaaé | ov | ov | ov | as30_ | 2scs¢00| OV | Ov |
V
OV
4
°
'
>
zt
D
st
i) bt)
hal
!
x"
Psy
| a310__| 283708 | OV _|
.
| asit | asca7o8 | ov | ov | ov | a4 | ascaao0| a6v | Ov | ov |
| asia | ascavos | o7v | ov | ov | as43_ | 2sca4o0| 84v | OV | Ov |
| ass | ascavoa | o7v | wv | ov | as4a | ascs400] ov | asv | ov _|
[ 2SA1016 |
E
<=
| a3i4 |
| 0.6V |
| O35 | 2SAi016
9AV | 9.5V | 0347 | asca70e| ov | OV | OW |
2sc3400 | OV | o7v | ov | Qa4o | 2sca400 | 12.6V] OV | ov |
| ass | aspio2 | o6v | ov | ov | asso | 2sc3400] OV | Ov | ov |
[asia | aspior2 | o6V | ov | ov | ssi | 2sca400 | ov | 104v| Ov |
| 0320 | ascassi | 9.0V | i1.8v{ OV | 0352 | 2sc3400{ 34v | OV | OV
| asi | _2sc333i | 9.0v | 7.8V | 8.4V | 0353 | 2SA1346 | 15.0V] OV | 15.1V |
|__ 0323 | aspioi2 | o6v [| ov | ov | 0355 | 2sai346 | 15.0V | OV | 15.1V |
| 0324" | ascsao0 | ov | ov | ov | 0366 | 2saia46 | 15.0V | OV_| 15.1V |
|_a325 | 2scs36 | OV | 6.3V [| OV | ass7 | 2sat346 | 15.0V | 13.6V | 15.1V |
| 0326 | ascs4o0 | ov | 6.av [ ov | 0368 | scs400] OV | 15.0V | OV_|
280536 | 0.3V | OV
| 0329 | 280536 | 0.2V | 12.9V] 0.aV | Q361_ | 28C3400 | OV | 15.0V] OV |
eee
geet
a a
Ur
otf
»
IC PIN NUMBERS DC VOLTAGES
EP
a
a A WF CW
| ic306 | Labae2s | i27v | 7.ov | 7ov | 6av | w | 6a | oo | 6 [ivy
ff
of
of Eh
CT
12.7V
wav]
ov | ow [i32v{ ||
[| 21 | 22 | 23 [ a |
(erred rel! cee a
ae Seed Pera
wav{
| Fo
aa
Ca
—_a
sca
10308
=51V
LS
eS NE Sos Ms ee CE SE Ga SS
[ LA3246 |
E
a
ae
1308
ase | ov [wv | ow Pw Pow Pow
wv
wv
ov
vf
|
| ov
Pte
tS
ee Pee
iss
ese ter ea —feibee etee | —e[e
e
ee—ee—eeE
vit
wi] ow [4a]
wil wilawi savy
of
UT CUCU
recall
| @ | ov | osv | sav [ sav] ov | osv | sv | 7av | ov | i20v|
tov | nav | oav | 7.2v | 49v | 5.0v | o5v | ov
[ov
[_1¢305 | CXATIO1P
12.6V | 6.4V | 6.4V | 6.2v | 66v | O3v | 65v | 65v | 04v | GeV | 63V [ia [ 64v
ov | e4v tT
4.
4v [ wil] ow Tw | 4ev{ ov [sev i 4ev[ anv TU

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