Notes On Schematic Diagram; Types Of Transistor - Sharp QT-CD180(BL) Service Manual

• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with "Fusible" is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression "capacitance/withstand voltage"
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
REF. NO DESCRIPTION
SW102 RECODE/PLAYBACK
SW201 FUNCTION SELECTOR
SW601 TAPE MAIN
SW702 PICKUP IN
SW801 PLAY/PAUSE
SW802 STOP
SW803 TRACK DOWN/REVIEW
SW804 TRACK UP/CUE
SW810 CD LID
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NOTES ON SCHEMATIC DIAGRAM

POSITION
REC—P.B.
TAPE/OFF—AM/ON—
FM/ON—CD/ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON

TYPES OF TRANSISTOR

FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
KRC107 M
KTA1046 Y
KTA1266 GR
KTA1273 Y
KTC3199 GR
– 11 –
1. Tuner
( ) : AM mode
: FM mode
2. CD
( ) : Stop state
: Play mode
3. Deck section
Stop mode
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• Parts marked with " " (
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
QT-CD180
) are important for