Philips HTS5520 Service Manual page 54

7-12
A
Main Board Circuit Diagram: POWER SUPPLY
1
2
TO POWER BOARD
9 5V/12V
9
8
8
7 POWER_ON/OFF# Imax 2A
7
6
6
5
5
4 GND
4
+12VIN
3
3
2 GND
2
-27VIN
1
1
XP1 XP1
C8 C8 C9 C9
9PIN/2.5mm 9PIN/2.5mm
0.1uF 0.1uF 0.1uF 0.1uF
+12V: +12V(+-10%)
+5V: +5V(+-2.5%)
3
-27VIN
4
A
B
POWER_control
T_5V/12V
Q3 Q3 ASM3401/NC ASM3401/NC PCON:
S D
L: STBY.
H: Working.
R6 R6
R5 R5 4.7K/NC 4.7K/NC
22K/NC 22K/NC
R8 R8
4.7K/NC 4.7K/NC
EN1
5V_STB
MO_VCC 5V VCC
Q4 Q4 ASM3401 ASM3401 L1 L1 FB10 ~80 FB10 ~80 5V
S D
R10 R10
C6 C6
C3 C3
0.1uF 0.1uF C4 C4
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
1M 1M
R12 R12
4.7K 4.7K
EN1
L2 L2 +12V
Q7 Q7 ASM3401 ASM3401 +12V
S D
FB10 ~80 FB10 ~80
C10 C10
0.1uF 0.1uF
R13 R13 1M 1M
R14 R14
4.7K 4.7K
EN1
R25 R25 27K 27K EN2
R9 R9
4.7K 4.7K L5 L5
-27V
Q15 Q15
S9015LT1 S9015LT1 FB10 ~80 FB10 ~80
R11 R11 0/NC 0/NC C16 C16
0.1uF 0.1uF
POWER_ON/OFF#
5V_STB 3 2
input output
CE63 CE63
+ +
4 47uF/16V 47uF/16V
Vout
C247 C247
+ +
CE62 CE62 0.1uF 0.1uF
47uF/16V 47uF/16V U20 U20
1117-33 1117-33
B
C
+12VIN
Q1 Q1
MMBT2907ALT1 MMBT2907ALT1
R1 R1
4.7K 4.7K
+3.3V_STB
R2 R2 EN2
1K 1K
R3 R3 4.7K 4.7K Q50 Q50
EN1
MMBT8550C MMBT8550C
R4 R4 1K/NC 1K/NC 10K 10K R24 R24 Q2 Q2
3DG3904M 3DG3904M
R21 R21
4.7K 4.7K
MO_VCC
880mA D1 D1 370mA
R336 R336 4.3 4.3
C5 C5
RL207 RL207
440mA
R337 R337
1 1
DV33
Q36 Q36
TR_B1
3CA8550D 3CA8550D
R338 R338 20K/1% 20K/1%
REGO1
+ +
R340 R340 12K/1% 12K/1%
+3.3V_STB
Q49 Q49 R17 R17 10K 10K
POWER_ON/OFF
MMBT8550C MMBT8550C
+3.3V_STB
C248 C248
0.1uF 0.1uF
C
7-12
D
DV33 RFV33
RFV33
FB2 FB2
FB500/0.2A FB500/0.2A
+ +
C144 C144
CE37 CE37
0.1uF/25V 0.1uF/25V
47uF/16V 47uF/16V
DV33
89S_3V3
FB3 FB3
FB500/0.5A FB500/0.5A
+ +
CE38 CE38 C145 C145
0.1uF 0.1uF
47uF/16V 47uF/16V
DV33
R334 R334 R335 R335
10K 10K 10K 10K
R470 R470
1
1
2
2
3
3
4
4
5 R20 R20
5
XP12 XP12
5PIN/2.0mm 5PIN/2.0mm
V18
Q37 Q37
TR_B2
3CA8550D 3CA8550D
V18
+ +
C146 C146
R339 R339 5.1K/1% 5.1K/1% CE39 CE39
220uF/16V 220uF/16V 0.1uF 0.1uF
C147 C147
REGO2
0.1uF 0.1uF
CE40 CE40
220uF/16V 220uF/16V R341 R341 10K/1% 10K/1%
D
E
1
1K 1K TRAY_DECT 2
TRAY_DECT
LOAD-
load- 2
LOAD+
load+ 2
TROUT
TROUT 2
2K 2K TRIN
TRIN 2
3
4
E