Chapter 8. Circuit Schematics And Parts Layout; Notes On Schematic Diagram; Type Of Transistor And Led - Sharp XL-HF201P Service Manual

CHAPTER 8. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[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
REF. NO DESCRIPTION
VR700 VOLUME
SW700 ON/STAND-BY
SW701 FUNCTION
SW702 PLAY/PAUSE
SW703 REWIND
SW704 FAST FORWARD
SW705 STOP
SW706 CD EJECT
[2] Types Of Transistor And LED
B
FRONT
(3)
VIEW
E
(1)
E C B
(S)(G)(D)
(1)(2)(3)
KTA1274Y
KTC3199
KTC3203Y
KTA1271Y
FRONT
VIEW
B C E
KIA7805A
KIA7809A
KTB772Y
POSITION
MAX -- MIN
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
ON -- OFF
TOP VIEW
TOP C
(2)
VIEW
KRA102S
1N4004
KRC107S
DRL204F
KRC104S
MA111
KTA1504GR
KTC3875GR
KRA107S
KTC2875B
KRC102S
FRONT
VIEW
1 23
TDA8920C
• 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 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.
FRONT
VIEW
304VT2H
FRONT
VIEW
+ AC AC -
10XB60F
8 – 1
" ( ) are important for main-
TOP VIEW
HSS4148
XL-HF201P