Fl, Volume Button & Power Button Circuit - Panasonic SA-PT70EB Service Manual

17.3. FL, Volume Button & Power Button Circuit
1 2 3
SCHEMATIC DIAGRAM - 12
A
C
FL CIRCUIT
: +B SIGNAL LINE
H904
B
DGND 1
KEY2 2
DGND 3
H902
DGND 1
MPORT_SW 2
KEY1 3
CN901
17
-VP 1
C
FL- 2
FL+ 3
FL_GND 4
KEY1 5
B B
KEY2 6
TO
FL_IC_STB 7
MAIN/D-AMP
FL_IC_CLK 8
CIRCUIT
FL_IC_DAT 9
(CN203)
RMT 10
IN SCHEMATIC
VREF 11
DIAGRAM - 10
SW+3.3V 12
DGND 13
D
AGND 14
HP/MPORT-RCH 15
AGND 16
HP/MPORT-LCH 17
1
L906
JK902 J0JBC0000019
1
7
E
6
L904
R919
J0JBC0000014
220
MUSIC PORT
3
4
L905 R920
J0JBC0000014 220
2
R921
0
5
L907
J0JBC0000019
F
D
VOLUME BUTTON CIRCUIT
G
R912
2.2K TUNE DOWN
R913
1.5K
H903
R914
1.2K
DGND 1
KEY2 2
DGND
3
H
1 2 3
4 5 6
: -B SIGNAL LINE : MUSIC PORT AUDIO INPUT SIGNAL LINE
Z901
B3RAB0000081
REMOTE SENSOR
1 2 3
RMT
VREF
R922
C931 1 2 4
47
16V10
FL+
MPORT_SW FL-
R924
10
D901
B0BC2R4A0263
C913 C915
50V22 50V22
FL-
FL+
R923
22K
FL_IC_STB FL_IC_DAT
FL_IC_DAT FL_IC_STB
RMT
VREF
SW+3.3V
MLCH
MRCH
SW+3.3V
R929
0
C918
1
MRCH
MLCH
C919
1
MPORT_SW
R930
0
CHASSIS
E
POWER BUTTON CIRCUIT
S904
STOP
S905
H901*
S906
TUNE UP
S907
PLAY
4 5 6
7 8 9
FL901
A2BB00000175
FL DISPLAY
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
C912 0.01
44 43 42 41 40 39 38 37 36 35 34
1 G1 33
2 JOG_LED P1 32
3 NC [1] SURR LED [34] G2 P2 31
R905
4 NC -VP 30
100K
5 OSC P3 29
IC901
6 DOUT P4 28
C0HBB0000057
R902 68
7 DIN P5 27
FL DISPLAY DRIVER
R903 68
8 CLK P6 26
R904 68
9 STB [11] K2 [23] P9 P7 25
10 K1 P8 24
11 23
C904 C906 C907
100P 100P 100P
12 13 14 15 16 17 18 19 20 21 22
C905 C909
C901 C903
6.3V220 0.1
50V22 0.1
-VP
SW+3.3V
S901
R915 R906 R907 OPEN/CLOSE
0 0 1.5K
DGND 1
R908 S902
1.2K POWER
MPORT 2
KEY1
3
7 8 9
104
10 11 12
27 28 29 31 32
G1
P1
P2
P3
P4
P5
P6
P7
P8
P9
SA-PT70EB/EG/EP FL / VOLUME BUTTON / POWER BUTTON CIRCUIT
10 11 12
13 14
A
B
C
D
E
F
G
H
13 14