Philips 241B4LPCB/00, Service Manual, Page: 37 / 87

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c
al
ar
D
iag
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m
&
C
.B
.A
37
Key_LDO_EN
ADC_KEY1
Touch_Alert
ADC_KEY2
Power_LED
Function_LED
Key_LDO_EN
Pivot
Present_OUT
IR_ADJ IR_ON
USB_detect
Pivot_ON_OFF
VOL_ADJ MUTE BL_EN BL_ADJ Low_Power
USB_OFF
+3.3V
+5V +5V
+5V
+3.3V
+3.3V
+5V
+5V
U
SB
+5V
+3.3V +5V
+3.3V
+1.8V
U
SB
+5V
+3.3V
+5V
PMOS Low
ᖄຏ
v=0.9
2010.07.21
Hiko
LightFrame_I
R
Control
PWM 200Hz fo
r
IR
_a
dj
(l
ig
htframe)
(SDA
)
(SCL
)
Change R98
/
R105 to 1K J
Make Q7/Q
8
i
n
saturation
Hiko 2
010.03.19
Pivot Co
ntrol
USB Con
trol
Power Board
Control
SMD R90 for S
caler
can not set to pus
h
pull
R123 100K J
R85
100 F
TP
44
R104
N
C
_
10K J
U11 A
Z
C
199-
04S
I/O 1
1
GND
2
I/O 3
4
VDD
5
I/O 4
6
I/O 2
3
TP
34
C6
0
N
C
_0.1U
Z
R10
8
1K
J
R9
4
100 F
R84
N
C
_
47K J
U13
R
M
2101B
0DA
IN
1
GND
2
OUT
3
TAB
4
TP
30
TP
32
R12
6
15K
R10
9
1K
J
R124
NC_0
C5
2
N
C
_0.1U
Z
TP
47
R8
8
N
C
_
4.7K J
R9
9
160
R87
N
C
_
10K J
R9
8
1K
J
TP
46
R107
1K
J
L12
Z220
R9
5
100 F
C5
4
N
C
_0.1U
Z
C6
8
10U
M
TP
42
TP
41
R10
1
0
R90
4.
7K
J
L14
Z30
C6
5
N
C
_0.1U
Z
TP
33
TP
45
R10
2
1K
J
TP
28
R9
7
47
K
J
C7
6
0
.1U
Z
Q7
AP2305G
N-
HF
D
G
S
C5
9
N
C
_0.1U
Z
C5
6
2
20P J
C6
3
10U
M
L13
Z30
R9
6
100 F
TP
27
R89
N
C
_
4.7K J
Q5
N
C
_2N
390
6
S
C E
B
J6
2K6120920
4
1
2
3
4
5
6
7
8
R10
3
N
C
_
47K J
TP
31
J4
2KK224100
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
G1
G1
G2
G2
TP
39
C6
4
0
.1U
Z
C7
8
0
.1U
Z
C7
7
10U
M
Q6 2
N
3
904S
B
E C
Q4
2
N
3906S
C E
B
J7
2K6118511
5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R8
1
NC_4.7K J
TP
25
TP
38
TP
29
TP
37
C5
7
N
C
_
220P J
C5
3
1U
K
TP
43
R9
3
4.
7K
J
Q10
2
N
3
904S
B
E C
TP
35
TP
48
C6
7
N
C
_0.1U
Z
C6
2
0
.1U
Z
R9
2
1K
J
R10
0
100K
J
R82
N
C
_
4.7K J
TP
26
C5
5
1U
K
R8
3
N
C
_
10K J
R9
1
1K
J
R10
5
NC_1K
J
Q3 N
C
_2N
3906
S
C E
B
R10
6
NC_0
R122
30
K
C6
6
N
C
_0.1U
Z
C5
8
N
C
_0.1U
Z SW
1
2B4600100
1
A
A
K
K
C
C
E
E
TP
36
C6
9
N
C
_10U
M
C6
1
10U
M
TP
40
J5 N
C
_
2
K
62095108
1 2 3 4 5 6 7 8
L11
Z30
R8
6
100 F
J3
2K6118510
6
1 2 3 4 5 6
241B4LP LCD