Philips BDP2900/F7 Service Manual page 11

CIRCUIT DIAGRAM-DVD Main Board
VCC
R24 R24
10K 10K
R26 R26
1K 1K Q6 Q6
[6] OPWRSB
OPWRSB 1 SST3904 SST3904
VCC 3.3V_STBY
Select drop off quickly
standby power net
R102 R102 R98 R98 R101 R101
15K_1% 15K_1% 3.3K 3.3K 10K 10K
Resistor value can tune
for best power sequence;
R99 R99 100 100
C168 C168 R103 R103 1 Q12 Q12 1 Q13 Q13
2N3904 2N3904 2N3904 2N3904
0.1uF/6.3V 0.1uF/6.3V 2.74K_1% 2.74K_1%
VCC R/R to Q3.b
5.000V 0.772V
4.532V 0.700V
3.885V 0.600V
3.237V 0.500V
VCC_1 SWITCH
put FB6
nearby
VCC VCC_1
Motor
R1388 R1388 0R/0805 0R/0805
Driver
Q8 2307/NC Q8 2307/NC FB6 FB6
3 2 VCC_1 BLM18P BLM18P
ASD/L_0805 ASD/L_0805
R1387 R1387 C235 C235
SOT23/SMD SOT23/SMD
47K/NC 47K/NC 10uF/10V/X5R 10uF/10V/X5R
R140 R140 1K/NC 1K/NC
POWER_EN
3.3V_STBY
1
R1390 R1390
10K/NC 10K/NC
OPWRSB# 1
R32 R32
Q4 Q4
OPWRSB 1 SST3904/NC SST3904/NC
10K/NC 10K/NC
VCC
DC_EN
VCC
VCC_32014805
C4 C4
0.1uF 0.1uF
DC_EN
DC_EN [4]
C93 C93
1uF/NC 1uF/NC
RESET CIRCUIT
RESET_ [6]
RESET_
C145 C145 C144 C144
10uF/6.3V 10uF/6.3V 0.1uF/6.3V 0.1uF/6.3V
C0805/SMD C0805/SMD close to IC
MVCC_T
C236 C236
+ CE11 + CE11
10uF/10V/X5R 10uF/10V/X5R
100uF/6.3v/NC 100uF/6.3v/NC
M M
M
POWER_EN
OPWRSB#
Q31 Q31
SST3904/NC SST3904/NC
6-1
U4 U4
L1 L1
G5725ADJT11U G5725ADJT11U
2.2uH/1.5A 2.2uH/1.5A
4 3
VIN LX
R2 R2 15K/1% 15K/1%
5
FB
1
EN GND
+ + CE3 CE3
220uF/6.3V 220uF/6.3V
2
C1 C1
C8 C8 R1 R1 C288 C288 NC NC
10uF/10V/X5R 10uF/10V/X5R
0.1uF 0.1uF
10K/1% 10K/1%
0.1uF 0.1uF
CE9 CE9
U5 U5
10/0603 10/0603
R3 R3 AT1526P11U AT1526P11U
C3 10uF/10V/X5R C3 10uF/10V/X5R
L7 L7
1 8
VCC VIN
2.2uH/2.5A 2.2uH/2.5A
0.1uF 0.1uF
C5 C5
7
LX
3
GND
DC_EN 5 4
C10 C10 NC NC
EN FB
2 6
R4 R4
REF PGND
C7 C7
7.5K/1% 7.5K/1%
0.1uF 0.1uF
R5 R5
15K/1% 15K/1%
NC23 NC23
NC PAD 0603 NC PAD 0603 P2_GND
U18 U18
R179 R179
10K 10K
1
POK
2
DC_EN
EN
R6 R6
VCC
6
VOUT
3
VIN
R182 R182
1.25K_1% 1.25K_1%
0R/NC 0R/NC
C215 C215 0.1uF/10V 0.1uF/10V
CE4 CE4 7
FB
0.1uF/10V 0.1uF/10V
10uF/10V/X5R 10uF/10V/X5R
uP7706U8 uP7706U8
R180 R180
R181 R181
30K_1% 30K_1%
10K_1% 10K_1%
VCC
LM1117S-3.3V LM1117S-3.3V
3 2
IN OUT
close to LDO
C843 C843
C202 C202
4
OUT1
4.7uF/10V 4.7uF/10V
1uF/25V/NC 1uF/25V/NC
C842 C842
U17 U17
10uF/10V 10uF/10V
close to DC/DC R855 R855 0R 0R R853 R853 NC NC
LDO/ 100UA/ 300MA
3.3V OPTION2# CIRCUIT
3.3V_STBY
3.3V_STBY
3.3V
Q2 Q2
R52 R52
(PMOS)SI2307/NC (PMOS)SI2307/NC
D
S
10K/NC 10K/NC
G
C30 C30
1K/NC 1K/NC
R23 R23
Q5 Q5 0.1uF/10V/NC 0.1uF/10V/NC
R49 R49 1K/NC 1K/NC 1
SST3904/NC SST3904/NC
C845 C845
2.2uF/NC 2.2uF/NC
1.5V
C26 C26
22uF/6.3V/X5R/NC 22uF/6.3V/X5R/NC
1.2V
C25 C25
+ + CE10 CE10
22uF/6.3V/X5R/NC 22uF/6.3V/X5R/NC
220uF/6.3V 220uF/6.3V
P2_GND
3.3V
ASD/C_0805 ASD/C_0805
3.3V_STBY
100MA(Max)
STBY
3.3V
POWER
1