Sharp DK-AP2BK (serv.man3) Service Manual ▷ View online
DK-AP2/DK-AP2(BK)
5 – 1
CHAPTER 5. 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
SW301
POWER ON / STAND-BY
ON—OFF
SW302
VOLUME UP
ON—OFF
SW303
VOLUME DOWN
ON—OFF
SW304
PLAY/PAUSE
ON—OFF
SW305
FORWARD
ON—OFF
SW306
REVERSE
ON—OFF
KRC107S
KTC3875 GR
KRA102S
KTC2875B
KTC3875 GR
KRA102S
KTC2875B
B
(3)
E
(1)
C
(2)
TOP
VIEW
TOP VIEW
KIA78D05
VIEW
FRONT
3 2 1
D1SS119
MA111
IN5820
SK24A
MA21038
RB160M30
IN5820
SK24A
MA21038
RB160M30
Anode
Cathode
A304VT2H
A343BD2S2
A304AD2E
A343BD2S2
A304AD2E
1 - INPUT (V
in
)
2 - OUTPUT (V
O
)
3 - GND
4 - V
4 - V
O
SENSE
5 - ON/OFF CTRL (V
C
)
VIEW
FRONT
1 2 3 4 5
KiA278R05
DK-AP2/DK-AP2(BK)
5 – 2
[3] Schematic Diagram
Figure 5-1: MAIN SCHEMATIC DIAGRAM (1/6)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
DK-AP2/DK-AP2(BK)
5 – 3
Figure 5-2: MAIN SCHEMATIC DIAGRAM (2/6)
7
8
9
10
11
12
DK-AP2/DK-AP2(BK)
5 – 4
Figure 5-3: MAIN SCHEMATIC DIAGRAM (3/6)
13
14
15
16
17
18
Click on the first or last page to see other DK-AP2BK (serv.man3) service manuals if exist.