5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
TITLE:LMD-4808UC BATTERY BOARD
0
2006-06-20
SHILIHUA
.
APPROVED
CHECKED
DRAWER
REV:
DATE:
LED
LED
GND
B+
B-
B+
B+
B-
B+
R1
OPEN
C9
104
Q7
2312
IC2
S3C9444
1
2
3
4
5
6
7
8
VSS
XIN
XOUT
P1.2 P0.2
P0.1
P0.0
VDD
R12
10K
R11
470
C10
104
R30
100K
R18
2K2
R23
0R
IC1
7805
1
2
3
R16
12K
R20
3K3
C7
1UF
R31
47K
Q20
2412
R15
470
C12
10UF
1
2
R9
100K
F1
1.25A
D10
SK34
C85
0.1UF
R2
OPEN
C2
10UF\25v
1
2
U1
1
R137
470K
R25
10K
U5
CHECK
C6
10UF
1
2
C3
0.1UF
Q6
SI2313
1
2
3
C84
0.1UF
U2
1
R7
30K
R24
10K
R6
221
R138
470K
U6
CHECK
R10
47K
R29
221
R4
1.8K
+
-
IC3A
LM358
3
2
1
8
4
C1
104
Q5
2412
+
-
IC3B
LM358
5
6
7
8
4
C5
0.47U
F
IC11
S-8241ABJ
1
5
4
2
3
VM
CO
DO
VDD
VSS
R22
150K
R32
10K
U3
1
R19
10M
C30
10UF
1
2
R5
100K
Q4
C945
R3
0.1
R21
10M
R13
0.1
D1
BAS85
U4
1
C8
104
R14
0.1
R135
1K
R17
3K3
C83
0.1UF
R33
1M
C4
0.47UF
R27
1K
R26
OPEN
Q3
B1184
7.0 Electrical Diagram
Summary of Contents for PET716
Page 7: ...3 0 INSTRUCTION FOR USE ...
Page 15: ...5 0 TROUBLESHOOTING SYMPTOM NO SOUND FROM HEADPHONE ...
Page 18: ...6 0 BLOCK DIAGRAM ...