Fisher MC-715 Service Manual page 33

SEMICONDUCTOR LEAD IDENTIFICATION sey _ INTEGRATED CIRCUIT BLOCK DIAGRAM
TA 7343 AP / TA 7358 AP / TA 7366 P FRONT/BOTTOM VIEWS
28D 1012
1234567893
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
OFF
OFF
AM Mix. IN AM Mix. Bypass AM OSC Reg, AMIFOUT AGC LED NC GND
- 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.
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