Fisher MC-715 - SEMICONDUCTOR LEAD IDENTIFICATION; INTEGRATED CIRCUIT BLOCK DIAGRAM; SCHEMATIC DIAGRAM SWITCH POSITIONS

SEMICONDUCTOR LEAD IDENTIFICATION sey _ INTEGRATED CIRCUIT BLOCK DIAGRAM
TRANSISTOR
|
FRONT
VIEW
|
BOTTOM
VIEW
LA
3160
FRONT/BOTTOM
VIEWS
FM
FRONT
ENDIC
TA
7358
AP
oe
(Cpa
a
es
|
ee
”
28C
930
Uy
betta,
28C
3331
12345678
28D
734
a
TA 7343 AP / TA 7358 AP / TA 7366 P FRONT/BOTTOM VIEWS
28D 1012
1234567893
28D
1406
+
yes
RR
BOO
MA
II
AM/FM
IF
AMP
IC
TA
7640
AP
12
Be ace AM Mix. OUT FMIFIN FM IF Bypass AMIFIN AMIF Bypass FM DET Vec DET OUT
16.1
C—
COLLECTOR
aor
ews
E— EMITTER
LA 4508 BOTTOM VIEW
SCHEMATIC
DIAGRAM
SWITCH
POSITIONS
Lise
Ne] |
FM Switch
AM Switch
AUX Switch
PHONO Switch
TAPE Switch
REC/PLAY Switch
SWITCH P.C.B. ASSY
SEQ./DUBB. Switch DUBBING
SW1-2|
TAPE
1
Switch
NORMAL
7
,
SW1-3|
TAPE
2
Switch
NORMAL
NOTES:
:
FM
MPX
IC
TA
7343
AP
1.
All
resistors
values
are
indicated
in
“ohm”
(K=103,
M=10°).
si
MP
LER
CINE
Cwich.
oir
2.
All
capacitors
values
are
indicated
in
“uF”
(P=10-'2).
ON
3.
All
voltages
indicated
on
the
schematics
are
measured
under
the
19kHz
<
90°
POWER
SWITCH
P.C.B.
ASSY
following
conditions.
,
OFF
OFF
AM Mix. IN AM Mix. Bypass AM OSC Reg, AMIFOUT AGC LED NC GND
swi
POWER
Switch
a.
Use
a
V.T.V.M.
TAPE
CONTROL
P.C.B.
ASSY
b.
All
voltages
+10
%
with
respect
to
chassis
ground.
swi1
HIGH
SPEED
Switch
c.
No
signals
at
input
terminals.
;
:
--d. AC
input
at220volts50Hz
°
-
CASSETTE
MECHANISM
4.
This
is
a
basic
schematic
diagram.
PLAY
Switch
;
d
d
- DUBBING Switch Because Fisher products are subject to continuous improvement,
TAPE 1 MOTOR Switch Fisher Corporation reserves the right to make any chan
: ges or
TAPE 2 MOTOR Switch, modifications without notice.
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol A\in the
parts list and the schematic diagram designate components in which safety can be of special significance. When replac-
ing a component identified with A\ , use only the replacement parts designated, or parts with the same ratings of resis-
tance, wattage or voltage that are designated in the parts list in this manual.
Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably insulated
from the supply circuit before returning the product to the customer.
—-36—