Panel & Power Button Circuit - Panasonic SA-XH50P Service Manual

17.4. Panel & Power Button Circuit
1 2
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
JK902 J0JBC0000019
E
1
7
6
L904
J0JYC0000196
MUSIC PORT
3
2
L905
J0JYC0000196
4
F
5
L907
J0JBC0000019
D
POWER BUTTON CIRCUIT
G
H901
DGND 1
KEY1 2
VREF_LED 3
H
1 2
3 4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE : MUSIC PORT AUDIO INPUT SIGNAL LINE
S905
VOL-
S906 R913
VOL+ 3.3K
R916
S901
2.2K
OPEN/CLOSE
R908 R912
1.2K 2.7K
Q901
B1ADCE000012
R900 C902
L906
47K 0.1
POWER SUPPLY
R906
4.7K
R902
Q900
R929 1K
0
B1GBCFJJ0051
LED CONTROL
R919 C918
220
1
C919
1
R920
220
R921
0
R930
0
CHASSIS
: +B SIGNAL LINE
S902
POWER
3 4 5 6
7 8 9
Z901
B3RAB0000081
REMOTE SENSOR
1 2 3
R914
4.7K RMT
VREF
R915
R922
6.8K C931 1 2 4 5 6 7 8 9 10 11 12
47
10
FL+
FL-
C912
R924
10
D901
C913 C915
B0BC2R4A0263
50V22 50V22
FL-
FL+
R923
22K
FL_IC_STB
FL_IC_DAT R901 68
R903 68
FL_IC_DAT FL_IC_STB
R904 68
RMT
VREF
C904
3.3V
0.01
MLCH
C901 C903
MRCH
50V22 0.1
3.3V
MRCH
MLCH
7 8 9
109
10 11 12
FL901
A2BB00000175
FL DISPLAY
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32
0.01
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
R905
4 NC -VP 30
82K
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
C906 C907
0.01 0.01
12 13 14 15 16 17 18 19 20 21 22
C905 C909
6.3V220 0.1
SA-XH50P/PC PANEL / POWER BUTTON CIRCUIT
10 11 12
13 14
K962...XH50P/PC
0
13 14