Sharp XL-UR250H (serv.man3) Service Manual ▷ View online
XL-UR250H
5 – 4
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE PIN
VOLTAGE
PIN
VOLTAGE PIN
VOLTAGE
1
3.19
1
1.69
1
0.0
51
0.0
1
3.19
51
0.00
2
1.22
2
1.69
2
1.6
52
0.0
2
0.00
52
0.00
3
0.01
3
3.39
3
0.7
53
3.3
3
0.00
53
0.00
4
0.01
4
1.68
4
0.7
54
0.0
4
0.00
54
0.00
5
1.63
5
0.00
5
1.6
55
0.0
5
0.00
55
3.28
6
3.33
6
3.40
6
1.6
56
3.3
6
3.28
56
3.28
7
3.33
7
3.40
7
1.6
57
1.5
7
0.00
57
3.28
8
0.01
8
0.00
8
3.3
58
3.3
8
0.00
58
3.28
9
0.01
9
1.30
9
1.6
59
0.0
9
3.27
59
3.28
10
0.01
10
1.70
10
1.6
60
3.3
10
0.09
60
3.28
11
1.67
11
1.84
11
1.6
61
0.0
11
0.09
61
3.20
12
0.01
12
1.65
12
1.6
62
0.0
12
3.27
62
0.00
13
0.01
13
3.20
13
1.6
63
0.0
13
3.27
63
3.28
14
0.01
14
0.00
14
0.0
64
0.0
14
3.28
64
3.28
15
0.01
15
3.39
15
2.0
65
1.2
15
3.28
65
3.28
16
3.33
16
0.00
16
3.3
66
1.6
16
0.00
66
3.28
17
1.5
67
1.6
17
0.69
67
3.28
18
0.0
68
1.5
18
0.72
68
0.64
19
1.3
69
0.0
19
0.71
69
0.08
PIN VOLTAGE
PIN VOLTAGE
20
1.3
70
1.6
20
0.72
70
3.28
1
3.33
1
3.19
21
1.3
71
3.3
21
0.73
71
0.06
2
0.00
2
3.18
22
0.0
72
1.6
22
0.70
72
3.28
3
5.17
3
3.18
23
1.5
73
1.3
23
0.69
73
1.51
4
3.18
24
0.4
74
0.0
24
0.69
74
0.00
5
3.18
25
3.3
75
1.4
25
0.70
75
1.51
6
3.19
26
0.0
76
3.3
26
0.00
76
3.28
7
0.00
27
1.5
77
1.6
27
3.27
77
3.27
8
4.42
28
3.0
78
1.3
28
0.47
78
3.26
9
7.06
29
1.5
79
0.0
29
0.45
79
3.01
10
3.12
30
1.5
80
1.7
30
0.45
80
0.04
11
1.63
31
0.0
81
1.6
31
0.45
81
3.28
12
1.63
32
3.3
82
1.6
32
0.41
82
2.97
13
1.63
33
0.0
83
1.6
33
0.42
83
0.00
14
1.63
34
1.5
84
1.6
34
0.59
84
0.00
15
1.63
35
1.5
85
1.6
35
0.60
85
0.01
16
1.63
36
0.0
86
1.6
36
0.01
86
0.03
17
1.63
37
3.2
87
1.6
37
0.01
87
3.28
18
1.63
38
0.6
88
1.6
38
0.01
88
3.20
19
3.12
39
0.6
89
0.5
39
0.01
89
0.00
20
3.11
40
0.6
90
3.3
40
0.01
90
0.01
21
2.68
41
0.6
91
3.3
41
0.01
91
0.01
22
3.11
42
3.2
92
0.0
42
0.01
92
3.28
23
3.11
43
3.2
93
0.0
43
0.01
93
0.01
24
2.20
44
0.0
94
1.6
44
0.01
94
0.01
25
1.63
45
0.0
95
1.6
45
3.28
95
3.28
26
0.01
46
2.2
96
1.6
46
0.01
96
0.52
27
7.06
47
0.0
97
1.6
47
0.01
97
0.00
28
7.06
48
0.1
98
1.6
48
0.01
98
0.01
29
7.01
49
1.6
99
1.5
49
0.01
99
0.00
30
0.00
50
1.5
100
1.6
50
0.01
100
0.00
31
0.00
32
0.00
33
0.00
34
0.00
35
3.18
36
3.18
IC3
IC2
IC4
IC5
IC1
IC7
XL-UR250H
5 – 5
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
3.27
E
-30.2
E
0.0
E
0.0
C
0.08
C
-41.0
C
10.1
C
3.1
B
3.25
B
-29.6
B
0.0
B
0.0
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
5.08
E
0.0
E
10.1
E
18.3
C
3.28
C
0.0
C
0.0
C
0.0
B
4.4
B
0.8
B
9.5
B
18.3
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
1.5
E
5.1
E
0.0
E
1.1
C
3.28
C
3.7
C
9.5
C
3.3
B
2.21
B
0.0
B
0.0
B
1.7
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
0
E
0.0
E
0.0
E
0.0
C
0.01
C
0.0
C
3.1
C
3.3
B
2.77
B
0.0
B
0.0
B
0.0
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
5.12
E
0.0
E
0.0
E
0.0
C
5.08
C
0.0
C
3.1
C
3.5
B
4.4
B
0.7
B
0.0
B
0.0
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
5.19
E
1.9
E
0.0
E
0.0
C
5.19
C
1.9
C
0.0
C
3.5
B
4.46
B
0.0
B
0.7
B
0.0
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
0
E
0.0
E
0.0
E
0.0
C
0.06
C
0.0
C
3.3
C
3.6
B
3.26
B
0.0
B
0.0
B
0.0
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
PIN VOLTAGE
E
0.01
E
0.0
E
0.0
E
0.0
C
0.05
C
0.0
C
3.2
C
0.0
B
2.96
B
0.7
B
0.0
B
3.0
PIN VOLTAGE
PIN VOLTAGE
E
0.0
E
0.0
C
2.5
C
2.5
B
0.0
B
0.0
Q603
QT21
Q862
Q610
Q1
Q3
Q7
Q908
Q861
Q904
Q704
Q2
Q801
Q613
Q4
Q902
Q706
Q907
Q702
Q701
Q8
Q5
Q6
Q604
Q608
Q611
Q903
Q905
Q841
Q906
Q614
Q612
Q860
Q901
XL-UR250H
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,
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
DISC4
ON—OFF
SW702
DISC5
ON—OFF
SW703
OPEN/CLOSE
ON—OFF
SW704
DISC1
ON—OFF
SW705
DISC2
ON—OFF
SW706
DISC3
ON—OFF
SW707
POWER ON/STAND-BY
ON—OFF
SW708
PLAY/REPEAT
ON—OFF
SW709
STOP
ON—OFF
SW710
VIDEO/AUX/USB
ON—OFF
SW711
TUNER (BAND)
ON—OFF
SW712
CD
ON—OFF
VR701
VOLUME
MAX—MIN
KRC107 S
KRC102 S
KRC104 S
KTA1504 GR
KTC3875 GR
KTA1544 T
KRA102 S
KTC3265 Y
KRC102 S
KRC104 S
KTA1504 GR
KTC3875 GR
KTA1544 T
KRA102 S
KTC3265 Y
HSS4148
B
(3)
E
(1)
C
(2)
TOP
VIEW
KDS184
TOP VIEW
TOP VIEW
TOP VIEW
KTA1271 Y
KTA1274 Y
KIA78L05
KIA78L05
VIEW
FRONT
E C B
(S)(G)(D)
VIEW
FRONT
B C E
(1)(2)(3)
1N4004S
DRL204F
MA111
DRL204F
MA111
TS4B05GM
D10XB60
D10XB60
A C
A C
VIEW
FRONT
FRONT
VIEW
VIEW
343VC3F
503BC2E30
503BC2E30
KIA7805A
KTC3199 GR
KTC3203 Y
KTC3203 Y
XL-UR250H
6 – 2
[3] Schematic Diagram
Figure 6-1: MAIN SCHEMATIC DIAGRAM (1/2)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
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