Notes On Schematic Diagram; Types Of Transistor - Sharp QT-CD131H Service Manual

• 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.
REF. NO DESCRIPTION
SW102 RECODE/PLAYBACK
SW201 FUNCTION/POWER
SW202 SURROUND (132H ONLY)
SW203 X-BASS
SW501 BAND
SW502 TUNER DOWN
SW503 TUNER UP
SW504 MEMORY

NOTES ON SCHEMATIC DIAGRAM

POSITION
OFF—ON
TAPE—TUNER— CD/
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
FRONT
VIEW
E C B
S8050D
Figure 21 TYPES OF TRANSISTOR
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 "
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
REF. NO
SW505
SW506
SW601
SW702
SW761
SW771
SW772
SW773
SW774
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
2SA673-C
2SC1815 GR
2SC1674 K
– 21 –
QT-CD131H/132H
" (
DESCRIPTION
PRESET UP
PRESET DOWN
TAPE MAIN
PICKUP IN
CD LID OPEN/CLOSE
PLAY/REPEAT
STOP
TRACK UP/CUE
TRACK DOWN/REVIEW
FRONT
VIEW
E B C
S9012H
) are important for
POSITION
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON
OFF—ON