Sharp XL-DAB227NH (serv.man4) Service Manual ▷ View online
XL-DAB227NH
5 – 4
IC851
IC852
IC853
IC302
PIN
NO
VOLTAGE
(V)
PIN
NO
VOLTAGE
(V)
PIN
NO
VOLTAGE
PIN
NO
VOLTAGE
1
5.10
1
10.50
1
5.10
1
5.10
2
13.00
2
0.00
2
5.10
2
5.10
3
19.70
3
5.20
3
3.30
3
3.30
4
0.00
4
1.90
4
2.00
5
18.70
5
0.00
5
0.00
6
10.00
6
0.00
6
0.00
7
8.50
7
0.00
7
0.00
8
0.00
8
0.00
IC303
IC304
IC301
PIN
NO
VOLTAGE
PIN
NO
VOLTAGE
PIN
NO
VOLTAGE
(V)
PIN
NO
VOLTAGE
(V)
1
0.00
1
10.00
2
1.20
2
10.00
1
0.00
27
0.00
3
5.10
3
3.30
2
0.00
28
0.00
4
2.00
3
0.00
29
3.10
5
0.00
4
0.00
30
0.00
6
0.00
5
3.10
31
1.60
7
0.00
6
0.00
32
0.00
8
0.00
7
0.00
33
1.10
8
0.00
34
3.30
9
1.90
35
0.00
10
1.40
36
0.00
11
2.50
37
3.20
12
0.00
38
3.30
13
3.30
39
0.00
14
0.00
40
0.00
15
0.00
41
0.00
16
0.00
42
0.00
17
0.00
43
0.00
18
3.20
44
0.00
19
3.30
45
0.00
20
0.00
46
0.00
21
0.00
47
0.00
22
0.00
48
0.00
23
0.00
49
0.00
24
0.00
50
0.00
25
0.00
51
0.00
26
0.00
52
0.00
XL-DAB227NH
5 – 5
-MEMO-
XL-DAB227NH
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
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
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.
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.
section and the chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
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.
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
TUNER
ON—OFF
SW707
AUDIO IN
ON—OFF
SW708
iPOD
ON—OFF
VR701
VOLUME
MAX—MIN
KRC107
KRA102 S
KRC102 S
KRC104 S
KTA1504 GR
KTC3875 GR
KTA1544 T
KRA107 S
KRC104 S
KTA1504 GR
KTC3875 GR
KTA1544 T
KRA107 S
HSS4148
B
(3)
E
(1)
C
(2)
TOP
VIEW
TOP VIEW
TOP VIEW
KTA1271 Y
KTA1274 Y
VIEW
FRONT
E C B
(S)(G)(D)
VIEW
FRONT
(1)(2)(3)
1N4004S
DRL204F
MA111
DRL204F
MA111
10XB60F
TDA8920
A C
A C
VIEW
FRONT
FRONT
VIEW
VIEW
343VC3F
503BC2E30
503BC2E30
KIA7805A
NTP18N06LG
NTP18N06LG
KTC3199 GR
KTA1266 GR
KTC3203 Y
1 2 3
VIEW
FRONT
1
23
XL-DAB227NH
6 – 2
[3] Schematic Diagram
Figure 6-1: MAIN SCHEMATIC DIAGRAM (1/6)
MAIN PWB-A1
FM SIGNAL
CD SIGNAL
AUDIO SIGNAL
AUDIO SIGNAL
iPOD SIGNAL
A
B
C
D
E
F
G
H
1
2
3
4
5
6
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