Chapter 6. Circuit Schematics And Parts; Notes On Schematic Diagram; Types Of Transistor And Led - Sharp DK-A1 Service Manual

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 resis-
tor 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
REF. NO DESCRIPTION
SW100 POWER ON / STAND-BY
SW101 E SOUND
SW102 VOLUME UP
SW103 VOLUME DOWN
SW104 EQUALIZER
SW105 SKIP UP / TUNER PRESET UP
SW106 SKIP DOWN / TUNER PRESET DOWN
SW107 PLAY / PAUSE

[2] Types Of Transistor And LED

KIA7812AP
KIA7809AP
KIA7805AP
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
B
FRONT
(3)
VIEW
E
(1)
E C B
(S)(G)(D)
(1)(2)(3)
KTC3199 GR
PST3227N
KTA1274Y
KIA78L05
FRONT
VIEW
3 2 1
• Schematic diagram and Wiring Side of P.W.Board
for this
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 FM stereo
Parts marked with "
•
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
SW108
SW109
SW110
SW112
SW113
SW114
SW115
SW601
TOP VIEW
TOP
C
VIEW (2)
KRC107S 1N4004
KRA107S
MA111
KRC104S
KTC3875 GR
KTA1504 GR
KTC2874B
KRC106S
FRONT
VIEW
Cathode
A C A C
D10XB60F
6 – 1
model are subject
" (
DESCRIPTION
CLOCK
iPOD
SNOOZE / DIMMER
AUXILIARY
TUNER
ALARM
ALARM ON / OFF
SUMMER TIME
D1SS119
Anode
A304VT2H
A343BD252
DK-A1/DK-A1BK
to change for
) are
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
UP—DOWN