Sharp XL-DK257N

XL-DK257N
6 – 1
CHAPTER 6. 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 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 chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the CD section, the CD is stopped.
• 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.
[2] Types Of Transistor And LED
REF. NO DESCRIPTION POSITION
SW701 POWER ON/STAND-BY ON—OFF
SW702 TRAY OPEN/CLOSE ON—OFF
SW703 PLAY/PAUSE ON—OFF
SW704 STOP ON—OFF
SW705 CD ON—OFF
SW706 iPOD ON—OFF
SW707 TUNER (BAND) ON—OFF
SW708 AUDIO IN ON—OFF
VR701 VOLUME MAX—MIN
KRC107
KRA102 S
KRC102 S
KRC104 S
KTA1504 GR
KTC3875 GR
KTA1544 T
KRA107 S
HSS4148
B
(3)
E
(1)
C
(2)
TOP
VIEW
TOP VIEWTOP VIEW
KTA1271 Y
KTA1274 Y
VIEW
FRONT
ECB
(S)(G)(D)
VIEW
FRONT
(1)(2)(3)
1N4004S
DRL204F
MA111
10XB60F
TDA8920
AC AC
VIEW
FRONT
FRONT
VIEW
343VC3F
503BC2E30
KIA7805A
NTP18N06LG
KTC3199 GR
KTA1266 GR
KTC3203 Y
123
VIEW
FRONT
123