Philips PET320 Service Manual page 20

5
3
D
GH +15V
1
R200 10R/0805
C140
C224 D19
0.1U/16V Zenor/15V
1U/25V
GNDP
VIN_SYS
C
+ C143
NC 10U/6.3V
GNDP
+5V_SYS GNDP
C148 C149
C243
NC 4.7uF/25V 0.1U/16V 0.1U/16V
GNDP GNDP
B
GNDA
R204 10K/J
GNDP
R206
18K
GNDP
A
5
4
BAT54S
C134 1U/25V
2
C136 1U/25V
D21 D22
BAT54S/SOT BAT54S/SOT
C142 2.2uF/25V
L16
10uH/3A
C144
0.1U/16V
R201
U9
0
1 8
INV FB
2 7
SCP OSC
3 6
VDD GND
4 5
CTL OUT
APW7078
GNDP
R203
6.8K
C151 R202
NC
C153
270p
220P C154
NC
R205
GNDP
165K
Vout=0.5X(1+R4/R5)
4
3
R199 10R/0805
D17
1
C137
C135
BAT54S/SOT 4.7U/16V
3
1U/25V
2
D20
1
1U/25V
BAT54S/SOT
3
C141
2
1U/25V
D23
2 1
MBRA340T3G C145 C146
+
Q30 10U/6.3V
APM2300A TAN 100U/6.3V
G
GNDP
C152
0.47U/10V
FB36 0
GNDP
GNDP
FB28 0
FB27 0
AGND
3
2
GL -8V
D18
C138 Zenor/8.2V
C139 0.1U/16V
GNDP
+5V_SYS
FB11
1A/600 OHM
C147 FB17 C150
1U/6.3V 1A/600 OHM 1U/6.3V
GNDP
GNDP
FB12
1A/600 OHM
C155
1U/6.3V
到ESD-GND
GNDP
GNDP
GNDRF
2
1
D
+5V_M
C
+
TC6
TAN 47U/6.3V
GNDM
+5V_RF
B
+
TC7
TAN 47U/6.3V
GNDRF
A
1