Read Sharp DV-L80 (serv.man4) Service Manual online
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A
B
C
D
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F
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H
I
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DV-L80S/W
DV-L80S/W
26~27
9-3. POWER 1 BLOCK DIAGRAM
R9 03
BATTERY TERMINAL
F9801
L9801
R9802
C9801
R933
R932
R906
R9 04
D9 04
S1
1
D1
G1
D
D
G
G
S
S
6
2
1
3
5
4
G2
2
4
7,8
D2
S2 3
D905
D902
OPEN
D901
Q906
Q907
Q913
Q901
Q905
Q904
3
5
2
6
4
4
G2
G2
S2
S2
D2
D2
S1
S1
G1
G1
2
2
2
G
D
S
D1
D1
3
3
3
5,6
5,6
1
1
1
7,8
7,8
5,6
DC JACK
C9802
D9801
F901
BATT
1
BATT
2
GND
3
GND
4
1
2
4
3
R925
R927
R921
R926
R920
C910
C911
C908
C907
C905
R917
OSC
Ref
CTL
CTL
R919
R931
R930
R929
D910
VE
D909
RT CT
VREF
2.5V
1.9V
1V
1.3V
bias
Vcc
C909
CSCP
DTC
+IN1
+IN2
–IN1
–IN2
FB1
FB2
COUT
–INC
+INC
OUT
C903
C904
G
D
4
5
2,3,6,7
2
3
1
1,5,8
D906
R912
R913
Q908
C901
L902
C912
INV. V out
DC. V out
Audio 5V out
BATTERY-i (AD)
Charge On Control
Trickle (H)
Power-H
DC-IN (H)
BAT. V (AD)
SWITCH (L)
BAT. V (AD)
SWITCH (L)
Vcc
Out
100k
Ω
X
25
Error
Amp.2
Amp.2
Current
Amp.
Amp.
PWM
Comp.
Comp.
IC901
–
+
–
+
–
+
–
+
–
+
–
+
+
+
+
+
+
+
–
–
–
Error
Amp.1
Amp.1
SCP
Comp.
Comp.
DTC
Comp.
Comp.
bias
S
R
Latch
UVLO
1
µ
A
2.1 V
1.1 V
R923
R916
R941
R924
R928
R918
Q911
Q912
Q910
R922
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13
6
7
8
16
5
2
4
3
1
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10
9
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