Chapter 5. Circuit Description; Notes On Schematic Diagram; Types Of Transistor - Sharp HT-X1 Service Manual

HT-X1
Audio CHAPTER 5. E Market HT-X1 Service Manual HT-X1
CIRCUIT DESCRIPTION

[1] 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 resis-
tor. 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 sym-
bol 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
SW700 JOG VOLUME
SW701 POWER
SW702 PLAY
SW703 STOP

[2] Types of transistor

2HC1815 GR
2SC535 C
2SC380 O
KRC104 M
KTA1266 GR
KTA1271 Y
KRA107 M
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
FRONT
VIEW
E C B
(S)(G)(D)
(1)(2)(3)
KRC107 M
KTC3199 GR
KTC3200 GR
KTC3203 Y
2SB561 C
2SB562 C
5 – 1
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the CD section, the CD is stopped.
• Parts marked with " " (
taining 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
SW704 EJECT
SW705 TUNER
SW706 FUNCTION
SW707 PRESET UP
SW708 PRESET DOWN
B
(3)
TOP
VIEW
E
(1)
2SD601 AR
) are important for main-
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
C
(2)