Read Sharp DK-A1H (serv.man7) Service Manual online
DK-A1H/DK-A1H(BK)
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 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
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,
1. In the tuner section,
indicates FM stereo
•
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.
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
SW100
POWER ON / STAND-BY
ON—OFF
SW101
E SOUND
ON—OFF
SW102
VOLUME UP
ON—OFF
SW103
VOLUME DOWN
ON—OFF
SW104
EQUALIZER
ON—OFF
SW105
SKIP UP / TUNER PRESET UP
ON—OFF
SW106
SKIP DOWN / TUNER PRESET DOWN
ON—OFF
SW107
PLAY / PAUSE
ON—OFF
SW108
CLOCK
ON—OFF
SW109
iPOD
ON—OFF
SW110
SNOOZE / DIMMER
ON—OFF
SW112
AUXILIARY
ON—OFF
SW113
TUNER
ON—OFF
SW114
ALARM
ON—OFF
SW115
ALARM ON / OFF
ON—OFF
SW601
SUMMER TIME
UP—DOWN
REF. NO
DESCRIPTION
POSITION
KRC107S
KRA107S
KRC104S
KTC3875 GR
KTA1504 GR
KTC2874B
KRC106S
KRA107S
KRC104S
KTC3875 GR
KTA1504 GR
KTC2874B
KRC106S
B
(3)
E
(1)
C
(2)
TOP
VIEW
TOP VIEW
KTC3199 GR
PST3227N
KTA1274Y
KIA78L05
PST3227N
KTA1274Y
KIA78L05
KIA7812AP
KIA7809AP
KIA7805AP
KIA7809AP
KIA7805AP
VIEW
FRONT
E C B
(S)(G)(D)
(1)(2)(3)
VIEW
FRONT
3 2 1
D1SS119
1N4004
MA111
MA111
D10XB60F
A C
A C
VIEW
FRONT
Anode
Cathode
A304VT2H
A343BD252
A343BD252
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