Panel, Volume & Button Circuit - Panasonic SA-PM250EB Service Manual

13.8. PANEL, VOLUME & BUTTON CIRCUIT
1 2 3
SCHEMATIC DIAGRAM - 7
A
D PANEL CIRCUIT
B
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
C
22 21 20 19 18 17 16 15 14 13 12
SEG21 R935
23 11
SEG21 560
SEG20
24 SEG20 COM1 10
SEG19
25 SEG19 COM0 9
[22] SEG22 [11] COM2
SEG18
26 8
SEG18 BZ
SEG17
27 SEG17 IC900 VDD 7
SEG16
28 C0HBA0000268 6
SEG16 VLCD
SEG15
D LCD DRIVER 5
29 SEG15 VSS
SEG14
30 SEG14 DATA 4
SEG13
[34] SEG10 [1] CS
31 3
SEG13 WR
SEG12
32 SEG12 2
RD
SEG11
33 SEG11 1
34 35 36 37 38 39 40 41 42 43 44
E
E
VOLUME CIRCUIT
F
S910 S909
EJECT PLAY/PAUSE
G
R900
ZJ903*
2.2K
KEY2 1
NC 2
PWRGND 3
H
1 2 3
4 5 6
: +B SIGNAL LINE
Z900
L5AYAYY00061
LCD
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
IR921
B3RAB0000110
REMOTE SENSOR
G1 G2
R933 330
1 2 3
D993
B3AFA0000131
Q900
B1GBCFJN0038
C922
1000P
LED DRIVER R934
R920
100
47
J0JHC0000118
C993 0.1
LB900 R940 0
J0JBC0000019
R941 0
C907 0.01
R901
15K
R906 100 R942 0
R905 100
R903 470
C995 0.1
J0JHC0000118
R908
1K C994 0.1
J0JHC0000118
VR900
VOLUME
1 2 3
R923 22K
R924 12K
C908 C906
100P 100P
R912 R911 R904 R910
18K 6.8K 3.9K 3.9K
S907 S906 S904
S905
STOP SELECTOR
FF/+ REW/-
ZJ902*
1 JOG
S900 2 KEY1
POWER
3 KEY2
4 PWRGND
4 5 6
7 8 9
F BUTTON CIRCUIT
S903
BT PAIRING
LB901 CN900
1 PWRGND
2 A9V
3 DIMMER
4 STDBY3.3V
B
5 REM_IN TO
6 D3.3V MAIN (DAMP)
7 LCD_DI CIRCUIT (CN8001)
8 LCD_WR IN SCHEMATIC
9 LCD_CE DIAGRAM - 4
10 DGND
LB903
11 JOG
12 KEY1
13 KEY2
ZJ901*
LB902
4 PWRGND
3 KEY2
2 KEY1
1 JOG
7 8 9
53
10 11 12
R907 R902 R909
18K 6.8K 3.9K
ZJ904*
1 KEY2
S901 S902
2 NC
BASS TREBLE
3 PWRGND
SA-PM250EB/EC/EE/EF/EG PANEL / VOLUME / BUTTON
10 11 12
13 14
A
B
C
D
E
F
G
CIRCUIT
H
13 14