Auto Setup Speaker & Power Button Circuit - Panasonic SA-PT470EB Service Manual

17.4. Auto Setup Speaker & Power Button Circuit
1 2 3
SCHEMATIC DIAGRAM - 11
A
D
AUTO SETUP SPEAKER CIRCUIT
JK6502
L6505
J0JBC0000019
5
4
R6549
B 6.8K
3
2
SETUP MIC
1
6
L6504
J0JBC0000019
7
C
C6539
CHASSIS
D
R6532 D6532
100 MA2J11100L
E
E POWER BUTTON CIRCUIT
F
H6803*
3 KEY1
R6801 1K
2 KEY1_BTN
1 DGND
G
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
C6522 1
R6538 2.2K
R6535 R6536 C6533
1 180K 1K
1
Q6532
B1ADCE000012
C6531
C6532 1
MUTING
15P
1 2 3 4
V-
IC6531
C0ABBB000189
Q6534
OP-AMP (SETUP MIC)
B1GDCFGA0018
V+
SWITCH
8 7 6 5
C6536 R6545
1 150K
Q6531
B1ABEB000002
MUTING
C
TO
PANEL CIRCUIT
(H6903*)
IN SCHEMATIC
DIAGRAM - 10
4 5 6
7 8 9
: MIC AUDIO INPUT SIGNAL LINE
1
ACS_MUTE
2 AGND
3 ACS
4 +7V
5 -7V
6 MPORTSW
7 DGND
R6540
2.2K
R6546
1.8K
Q6533
B1GDCFGA0018
BUFFER
R6544
56K
R6541
2.2K
7 8 9
120
10 11 12
H6501*
B
TO
MAIN CIRCUIT
(CN2010)
IN SCHEMATIC
DIAGRAM - 7
SA-PT470EB/EF/EG AUTO SETUP SPEAKER / POWER BUTTON
10 11 12
13 14
A
B
C
D
E
F
G
CIRCUIT
H
13 14