Philips PET744, Service Manual

Page: 18 / 36

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
POWER OFF
IN H OUT L
POWER ON
7.0 ELECTRICAL DIAGRAM
CIRCUIT DIAGRAM-POWER
+9VIN
Low Voltage Det
Low Voltage Det
+3.3V
+5V
+9VIN
+1.8V
ON/OFF DRIVE
ON/OFF DET ON/OFF
DC_IN
Discharge
+9VIN
ON/OFF
ON/OFF DET
ON/OFF DRIVE
+3.3V
RFVCC
Low Voltage Det 2
+3.3V 2,3,4
+5V 2,3,5
+9VIN 2,5
+1.8V 2
ON/OFF DET 2
ON/OFF DRIVE 2
+1.8V
+3.3V
GND
GND
GND
GND
GND
GND
GND
+3.3V
GND
GND
GND
GND
GND
GND
GND
GND
+5V
GND
+9VIN
+3.3V
+3.3V
Q3
3904
C2
0.1uF/0603
R17
10K
D12
RLS4148
2 1
R22 4.7K
R11
4.7K
R25
10/0603
R6
4.7K
R8
1K
D2
2K4 1%
C153
0.1uF/0603
U3
S701
1
2
3
4
5
CE
GN
D
VFB
EXT
VIN
U2
S701
1
2
3
4
5
CE GN
D
VFB
EXT
VIN
R24
10/0603
R5
4.7K
L6 22uH/CD43
JK9
PIN HEADER 1X4
1 2 3 4
C9
0.1uF/0603
C15
0.1uF/0603
R51
68K
Q23
3904
C12
0.1uF/0603
D5
4001
1
2
C5
0.
1uF
/0603
R28 22K
R16 20K
R21
10K
R49 560
R27 18K
L3 22uH/CD43
+
EC5
100UF/25V
L4
47uH/CD54
T1 CON
1
3
2
4
R4
4.7K
R56
1K
+
EC7
100uF/25V
1
2
D1
15V
1
2
R
2
10K
D6
15V
1
2
R154
10K
Q8 SI2307
2
1 3
Q4
3904
R3
1K
D3
SK34
1
2
R171
10K
Q7
3904
C11
1uF(0805)
R
153
10K
C16
1uF(0805)
R
7
10K
+
EC8
470uF/6.3v
1
2
+
EC6
470uF/6.3v
1
2
R30
10K
Q2
SI2307
Q6
3904
R12
10K
L7
47uH/CD54
Q22
BAT54C
2 1
R20
33K 1%
EC1
47uF/25V
R13
10/0603
Q5
SI2307
Q11 SI2307
2
1 3
R170
10K
D
8
SS14
SW2
POWER
F1
FUSE
Q9
3904
2
1
3
L1 FB 600R
R14
10/0603
R23
3.6K 1%
R170
10K
U1
1117-1.8V
1
2
3
OUT
GND
IN
D4
SK34
1 2
R15 3K3
+
EC9
100uF/25V
1
2
+
EC2
100uF/10V
1
2
J1
DC JACK
1
3
2
C6
0.
1uF
/0603
D
7
SS14