Philips PET946, Service Manual

Page: 14 / 40

3-6
3-6 03-12
3-22
7.0 ELECTRICAL DIAGRAM
CIRCUIT DIAGRAM-POWER
DVCC3
VCC_1.8V
VCC_5V
+9V
POWER_SW1
POWER_SW2
DEC_SW
POWER_SW1
POWER_SW2
ON/OFF_720
DEC_SW
POWER_ON/OFF
POWER_ON/OFF
BAT_DEC
9V_A
LED_PO
POWER_ON/OFF
VCC_5VP
LED_PO
ON/OFF_720
POWER_ON/OFF
BAT_DEC
VCC_5V
VCC_1.8V
DVCC3
+9V
POWER_SW1
POWER_SW2
ON/OFF_720
DEC_SW
BAT_DEC
9V_A
LED_PO
POWER_ON/OFF
VCC_5VP
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
9V_A
GND
GND
GND
GND
DVCC3
GND
VCC_1.8V
GND
VCC_5V
9V_A
9V_A
GND
+9V
GND
GND
VCC_5VP
DVCC3
GND
GND
GND
R18
470K
C4
0.1uF
T120
R279
33R
C8
0.1uF
C284
0.1uF
1
2
U3
SS7701
1
2
3
4
5
CE
G
N
D
VFB
E
X
T
VIN
R23
10R
U2
SS7701
1
2
3
4
5
CE
G
N
D
VFB
E
X
T
VIN
SW1
SW1
1
2
R127
13K
R15
33R
C2
1000P
R14
4.7K
C304
1uF
1
2
C9
1000P
C305
0.1uF
1
2
BC1
0.1uF
R280
510R
R306
5k1
R25 22K
U1
UTC1117-1.8V
3
1
2
OUT
G
N
D
IN
R20
22K
R22
10K
C306
1uF
1
2
R24
18K
L2
FB600
L9 FB600R
L6
RB600
L4
22uH
R12 10R
+
EC2
100uF/25V
Q6 SI2307
2
1 3
T121
L7 FB600R
EC60
100uF/10V
Q5
3904
C5
1uF
C10
1uF
T122
EC4
10uF/16V
+
EC6
220uF/10V
R27
10K
+
EC3
220uF/10V
C3
470P
1
2
R10
2.2K
L3
FB600R
T123
L8 22uH
D5
1N4148
1 2
C300
0.1uF
R11
4.7K
R21
2.7K
R17
10R
EC5
220uF/6.3V
T124
C11
1000P
1 2
EC61
100uF/10V
D
9
S
S
2
4
Q7 SI2307
2
1 3
D6
1N4148
1 2
C7
470P
1
2
T125
R126
30K
R19 1K8
+
EC7
100uF/25V
L5
FB600R
R26 2.7K
T126
R1
1K2
D
7
S
S
2
4
C6 1000P
1 2