5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
RESET Circuit
POWER LED
OFF
ON
APPROVED
DESIGN
2005.12.12
靠近主芯片
1.8V POWER FOR DSP KERNEL
P
ET
716 DVD MAIN BOARD
B
POWER
C
1
4
Title
Size
Document Number
Rev
Date:
Sheet
of
URST#
GND
AVCC
IR
URST#
VCC3
9V_IN
BATTER
DC_IN
IR_IN
Batter
POWER_SW
9V_IN
DC_IN
DC_IN
POWER_SW
DC_IN
9V_IN
DC_IN
POWER_SW
LED
DISCHARGE
GND
CHARGE
DV33
AVCC
2
GND
2,3,4,5
URST#
2
IR
2
VCC3
4
IR
2
GND
2,3,4,5
9V_IN
4
DC_IN
DV33
2
DV33
GND
9V_IN
GND
9V_LCD
VCC3
GND
GND
GND
P+5V
GND
GND
DV33
RFV33
DC_IN
VCC3
GND
VCC5
AVCC
VCC5
VCC3
GND
GND
GND
VCC3
V18
GND
GND
GND
GND
GND
P+5V
R4
10
L2
FB / 0805
Q1
3904
1
3
2
L3
10uH_0805
U3
APL1117-18V
1
3
2
4
ADJ
IN
OUT1
OUT2
BC8
0.1uF
J2
OPEN/CLOSE_SW
1
2
R14
100k
+
EC10
100uF/16V
2
1
J1
4PIN/1.25mm(TO SPEAKER)
1
2
3
4
R6
10K
EC4
100uF/16V
R10
47K
J4
POWER ON/OFF SWITCH
2
1
3
5
4
6
+
EC9
47uF/16V
2
1
L1
22UH
L4
22UH
BC5
0.1UF
R5
10
BC3
0.1UF
R7
47K
BC1
0.1UF
R8
1K
+
EC5
100UF/16V
LED1
LED3.0
1
2
D3
SS14
1
2
D4
SS14
1
2
+
CE1
10uF/6.3v
BC9
0.1uF
D5
SS14
1
2
Q5
SI2307
1
2
3
EC6
100UF/16V
1
2
+
EC1
100uF/16V
L7
FB / 0805
BC2
NC
D2
15V
EC3
100UF/16V
1
2
L8
FB / 0805
LED2
LED3.0
1
2
BC7
0.1UF
L9
NC
Q7
3904
1
3
2
+
EC2
100UF/16V
L6
FB / 0805
R3
1K
+
EC8
100uF/16V
2
1
Q2
2307
1
2
3
R13
100k
R12
1K
U2
S8521F50MC
1
2
3
4
5
ON/OFF
VSS
VOUT
EXT
VDD
D1
1N4148
J3
DC JACK(+9V~+12V
)
1
2
3
IR1
IR
1
2
3
R11
47K
L5
FB / 0805
TP1
R15
10k
R16
10k
R17
1.5K
DP1
SS14
1
2
EC7
100UF/16V
1
2
Q8
SI2307
1
2
3
Q9
SI2307
1
2
3
R1
1K
F1
2A_FUSE
U1
S8521F33MC
1
2
3
4
5
ON/OFF
VSS
VOUT
EXT
VDD
Q3
SI2307
1
2
3
Q6
SI2307
1
2
3
BC4
0.1uF
Q4
3904
1
3
2
R2
10k
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 ...