QT-CD250 (serv.man6). Including circuit diagrams - Sharp Audio Service Manual (repair manual). Page 18

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  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

REC—P.B.

SW201

FUNCTION SELECTOR

TAPE/OFF—
TUNER/ON—CD/ON

SW601

TAPE MAIN

OFF—ON

SW651

VOLTAGE SELECTOR

AC220-240V—

(QT-CD250W ONLY)

AC110-127V

SW702

PICKUP IN

OFF—ON

SW801

PLAY/PAUSE/

OFF—ON

TUNING UP

SW802

STOP/TUNING DOWN

OFF—ON

SW803

REPEAT/BAND

OFF—ON

SW804

TUNER/MEMORY

OFF—ON

SW805

CUE/PRESET UP

OFF—ON

SW806

REVIEW/

OFF—ON

PRESET DOWN

SW807

VOLUME UP

OFF—ON

SW808

VOLUME DOWN

OFF—ON

SW809

X-BASS

OFF—ON

SW810

CD LID

OFF—ON

E C B

(S) (G) (D)

(1) (2) (3)

FRONT

VIEW

KRA102 M
KRC107 M
KTA1046 Y
KTA1266 GR
KTA1273 Y
KTC3199 GR