Sharp XL-520H Service Manual page 22

XL-520H,520E/CP-520,520E
LED PWB-A4
A
B
FW701
C
R70C
3.3K
2 3
R70A R70B
1K
1K 1
Q701
KRC102M
RESET
D
+B
+B
18 17 16 15 14 13 12 11 10
E
+
19 20 21 22
+B
F
CD MOTOR
M801
PWB-D
SLED
M802
SPINDLE
SW801
PU-IN
PICKUP UNIT
TR+
G FO+
FO–
TR–
ACTUATOR
1/2VCC VR1A
C
F
B
A
E
GND
MON
C2A
LD
VCC
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 29.
1
DISPLAY PWB-A3
SW714
STOP/
R717
CLEAR
3.9K
SW713
PRESET
R718
UP
2.7K
SW712
PRESET
R719
DOWN
1.8K
SW711
MEMORY/
R720
SET
1.8K
SW710
REC/
PAUSE
SW718
ON/
STAND-BY
R721
10K
+B
+B
+B
R70M
D722
SWITCHING
100
1SS133
C711
Q702
ZD701 RX701
3.3/50
KTC3199
UZ3.3BSB
21043TE2
+B
R70G
R70H
D723
1K
10K 1SS133
R70K
C715
2 3 1
120
R70J 100/10
10K
R70L
R70F
C714
1K
82
Q703 560P
KTC3199
SWITCHING
SWITCHING
Q707
KTA1266GR
+B
R798
47K
R799
2.2K
C871
330/10
+B
9 8 7 6 5 4 3 2 1
– +
+ – – + + – – +
LEVEL LEVEL
SHIFT SHIFT
T.S.D
LEVEL LEVEL
SHIFT SHIFT
+ + –
+ – – + –
+
STAND
–
–
-BY
25 26 27 28 29 30 31 32 33 34 35 36
23 24
CD STB
R873
4.7K
GAIN4
R874
10K
+
SP+ SP+
M
6 6 6
SP–
SP–
–
5 5 5
SL+ SL+
4 4 4
+
SL– SL–
M
3 3 3
PU-IN PU-IN
–
2 2 2
GND GND
1 1 1
TR– TR–
1 1 1
TR+ TR+
2 2 2
FO+ FO+
3 3 3
FO–
FO–
4 4 4
GND GND
5 5 5
PD PD R818
6 6 6
VR VR
7 7 7
LD LD
8 8 8
R80E
82K
R80A 82K
C C
1 1 1
F R80B 82K
2 2 2
B R80C 82K
3 3 3
A R80F 82K
4 4 4
E R80G 82K
5 5 5
1/2V +B
6 6 6
+B
+5V
7 7 7
2
Figure 22 SCHEMATIC DIAGRAM (3/4)
1
SW707
FUNCTION
R708
5.6K
SW706
R724 R725
47K 47K
BAND
R709
3.9K
SW705
+B
X-BASS/ +B R726
R710
EQUALIZER
2.7K 1K
SW704
L701
100µH
X701
VOL
R711
UP
1.8K
SW703
X702
VOL
R712
C702
DOWN
1.8K
22P(CH)
SW702
R728
PLAY/
R730
R727
CD PAUSE/
4.7K
TUNING UP R731
R732
R729
10K
R722 R713
10K 10K
+B
+B
+B
µ-COM VDD
µ-CON+5V
+B
SYS STOP
REMOCON
RESET
SWITCHING
Q705
KRA102M
Q704
R70N
2SD468C
10 3 2
+B
1
R70R R735
47K
C716 100
47/16
R736
47K
ZD702
UZ6.2BSC
R737
47K
R738
47K
R739
47K
SWITCHING
P CONT
Q706
LED+B
KRC102M +B
M 12V
C704 +B
0.022
2 3 µ-CON+5V
1
GND
+B
+B
FMSO
TS2O
DMEO
FSO
R810
2.2K
C807
0.22
SWITCHING
18
Q801
2SA1015GR
+B
R801
C804
22
47/16
C802
100/10
+5V
F
B
A
E
1/2VCC
+B
3 4
– 22 –
LCD
LCD701
2 3 4 5 6 7 8 9
10 11 12 13 14
99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76
100
1
2
3
COM1
4
COM0
5 VLC3
6 VLC2
7 VLC1
8
VDD
9
OSC2
10 OSC1
11 VSS
XI
12
13 XO IC701
14 MMOD IX0190AW
15 VREF SYSYTEM MICROCOMPUTER
1K
16 AREA
1K
KEY1
17
1K
18 KEY2
1K
POWER
19
20 VSM
21 F.P
RUN PLS
22
CAM SW
23
24 VREF+
25
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
+B
+B
+B
R823
100K
R820
33K
DMEO
C811
22/16
24 23 22 21 20
R817
15K
25
C810
0.1
FMSO
26
R816
47K
FMSM
R819
27
4.7K
FMSP
28
+B
THLD
29
TS2O
30
R814
1M
31
R813 C809
2.2K
0.015
TS2P
32
R812
18K
TS1N
33
R811
27K
TS1P
34
R809 TSO
35
100K
TEL1
36
TEL2
37
R803
22K
TSN
38
C813
39 40 41 42 43
0.0012
TPO
R804
TRACKING
120K
ERROR
BALANCE
F
VR802
100K(B)
B
A
E
LDO
PD
5
15 16 17 18 19 20 21 22 23 24
75
74
SEG27 73
SEG28 72
SEG29 71
SEG30 70
SEG31 69
N.C 68
N.C 67
N.C 66
N.C 65
SRS1 64
SRS2 63
R781 1K
BUS3
62
R780 1K
BUS2 61
R779 1K
BUS1 60
R778 1K
BUS0 59
R777 10K
CD STB
58
R776 1K
PU-IN
57
R775 1K
LID-SW
56
R774 1K
BIAS
55
R773 1K
B-CAN 54
R772 1K
REC 53
R771 1K
MOT
52
R770 1K
SOL
51
43 44 45 46 47 48 49 50
R767 1K
R766 1K
R765 1K
+B
+B
+B
C822
47/16
R821
C823
18K
10/16
C824
R822
0.056
330
C825
0.039
19 18 17 16 15
VR803
14 FEL2
100K(B)
FEL1
13
R825
FHLD 470K
12
C826
1/50
FEI
11
IC801
C827
R827
470P
FEO 150K
TA2065F
10
SERVO
R828
2.7K
FEN
AMP.
9
R837
2.7K
FEP
8
DFIN
7
SBAD
6
RFRP
5
2VRO C831
4
0.056
VRO
+B
3
RFI
2
C832
C828
47/16
0.056
RFO
1
C829
C833
44 45 46 47 48
3.9P 220/10
C830
47P
+B
R829
C834
470
0.056
R838
12K
TP8
6