Panel And Power Button Circuit - Panasonic SA-XH70PH Service Manual

17.4. Panel and Power Button Circuit

1 2 3
SCHEMATIC DIAGRAM - 15
A
C
PANEL CIRCUIT
B
H902
DGND 1
KEY1 2
VREF_LED 3
C
CN901
17
-VP 1
FL- 2
FL+ 3
KEY2 4
KEY1 5
LED_CTRL 6
B B
TO
FL_IC_STB 7
MAIN CIRCUIT
FL_IC_CLK 8
(CN203)
FL_IC_DAT 9
IN SCHEMATIC
RMT 10
D
DIAGRAM - 12
VREF 11
3.3V 12
DGND 13
AGND 14
MPORT_LCH 15
AGND 16
MPORT_RCH 17
1
E
F
D
POWER BUTTON CIRCUIT
G
H901
S902
POWER
DGND 1
KEY1 2
VREF_LED 3
H
NOTE: " * " REF IS FOR INDICATION ONLY
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE : USB SIGNAL LINE
S905
VOLUME-
S906 R913
R914
VOLUME+ 1.2K
S901
OPEN/CLOSE
R908
1.2K
: +B SIGNAL LINE
4 5 6
7 8 9
Z901
B3RAB0000081
REMOTE CONTROL SENSOR
G1 G2
1 2 3
18K
RMT
R922
47
VREF 1 2 4 5 6 7 8 9 10 11 12 13
C931
10
FL+
K955
0
FL-
C912
R924
10
D901 C913 C915
DZ2J02400L 50V22 50V22
FL-
FL+
R905
82K
R923
22K
FL_IC_STB
FL_IC_DAT R901 68
R903 68
FL_IC_DAT FL_IC_STB
R904 68
RMT
VREF
3.3V
C908 C903
6.3V100
1 0.1
3.3V
CN951* LB951
0
A
VBUS 1
TO
BACKEND CIRCUIT D- 2
D+ 3
(FP9001)
DGND 4
IN SCHEMATIC
DGND 5
DIAGRAM - 1
D-
D+
LB950
0
7 8 9
97
10 11 12
FL901
A2BB00000175
FL DISPLAY
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32
0.01 K960...PH
0
44 43 42 41 40 39 38 37 36 35 34
G1
1 G1 33
P1
2 NC P1 32
P2
3 NC [1] USB RIP LED [34] G2 P2 31
4 NC -VP 30
P3
5 OSC P3 29
IC901
P4
6 DOUT P4 28
C0HBB0000057
P5
7 DIN P5 27
FL DISPLAY DRIVER
P6
8 CLK P6 26
P7
9 STB [11] K2 [23] P9 P7 25
P8
10 K1 P8 24
P9
11 23
12 13 14 15 16 17 18 19 20 21 22
C905 C909
0.1
CN950
5
G
1
VBUS
2 D-
3 D+
R950
0
DGND
D- 4
G
6
D+
R951
0
R952
0
CHASSIS
SA-XH70PH PANEL / POWER BUTTON CIRCUIT
10 11 12
13 14
A
B
C
D
E
USB PORT
F
G
H
13 14