Sharp QT-CD111, Service Manual

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QT-CD111/111C
– 16 –
NOTES ON SCHEMATIC DIAGRAM
1. Tuner
( ): AM mode
Marking except for ( ): FM mode
2. CD
( ): Play mode
Marking except for ( ): Stop state
3. Deck section
( ): Record mode
Marking except for ( ): Playback mode
Display / Control section:
( ): Active state
Marking except for ( ): CD Function mode at stop state
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
• Resistor:
To differentiate the units of resistors, the 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 an
ohm resistor. The resistor designated "Fusible" is a fuse type
resistor
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-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
• The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
SW102 RECODE/PLAYBACK OFF—ON
SW201 FUNCTION/POWER TAPE—AM—
FM AUTO—CD/
OFF—ON
SW203 X-BASS OFF—ON
SW601 TAPE MAIN OFF—ON
SW702 PICKUP IN OFF—ON
REF. NO DESCRIPTION POSITION
SW761 CD LID OPEN/CLOSE OFF—ON
SW771 PLAY/REPEAT OFF—ON
SW772 STOP OFF—ON
SW773 TRACK UP/CUE OFF—ON
SW774 TRACK DOWN/REVIEW OFF—ON
Figure 16 TYPES OF TRANSISTOR
REF. NO DESCRIPTION POSITION
E C B
(S) (G) (D)
(1) (2) (3)
FRONT
VIEW
2SC1815 GR