Sharp HT-CN300S Service Manual - Page 9

Notes On Schematic Diagram, Types Of Transistor And Led

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HT-CN300 NOTES ON SCHEMATIC DIAGRAM • 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 chas- sis with no signal given. 1. In the tuner section, indicates AM indicates FM stereo 2. In the power section, a tape is being played back. • Parts marked with " 1 " ( ) 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. REF. NO DESCRIPTION SW678 POWER POSITION ON-OFF TYPES OF TRANSISTOR AND LED FRONT VIEW EC B (S) (G) (D) (1) (2) (3) KRC105 M KTC3199 GR KRC107 M KTC3203 Y KTA1266 GR 2SB1565 F KTA1271 Y 2SC2878 B KTA1274 Y 2SD1898 KTC3198 GR FRONT VIEW BC E KTC2026 B (3) TOP C VIEW (2) E (1) KRA107 S KRC107 S FRONT VIEW 333ID213 EL204GT EL204HT - 9 -

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– 9 –
HT-CN300
•
The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the power section, a tape is being played back.
•
Parts marked with “
1
” (
) 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.
NOTES ON SCHEMATIC DIAGRAM
•
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.
REF. NO
DESCRIPTION
POSITION
SW678
POWER
ON—
OFF
TYPES OF TRANSISTOR AND LED
(1)
(2) (3)
(S) (G) (D)
E
C
B
FRONT
VIEW
B
C
E
FRONT
VIEW
KRC105 M
KRC107 M
KTA1266 GR
KTA1271 Y
KTA1274 Y
KTC3198 GR
333ID213
EL204GT
EL204HT
KTC2026
KRA107 S
KRC107 S
FRONT
VIEW
KTC3199 GR
KTC3203 Y
2SB1565 F
2SC2878 B
2SD1898
B
(3)
E
(1)
C
(2)
TOP
VIEW