Key Board - Philips 231T1SB/00 Service Manual

6.4 Key Board

715G3556K02000004M
1
KEYPAD
CN001 CN001
A
1
2
3
4
CONN CONN
B
C
D
1
2
ZD001 ZD001 C001 C001
NC/UDZSNP5.6B NC/UDZSNP5.6B 0.1uF/25V 0.1uF/25V
KEY 1
KEY 2
VOL +
ZD002 ZD002 C002 C002
NC/UDZSNP5.6B NC/UDZSNP5.6B 0.1uF/25V 0.1uF/25V
MENU
SW007 SW006
CN001 POWER INPUT
2
3
2.44V 1.75V
757 543
R001 R001 R002 R002
11K OHM 1% 1/10W 11K OHM 1% 1/10W 4K3 1/10W 1% 4K3 1/10W 1%
5 5
1 2 1 2
SW001 SW001
SW002 SW002
SW SW VOL - SW SW
3 4 3 4
6 6
2.44V 1.75V
757 543
R005 R005 R006 R006
11K OHM 1% 1/10W 11K OHM 1% 1/10W 4K3 1/10W 1% 4K3 1/10W 1%
5 5
1 2 1 2
SW005 SW005
SW006 SW006
INPUT POWER
SW SW SW SW
3 4 3 4
6 6
SW005 SW004 SW003
MENU CH - CH +
3
Meridian 1
4 5
1.08V 0.42V
335 130
R003 R003 R004 R004
1.8K1/10W 1.8K1/10W 470R 1/10W 1% 470R 1/10W 1%
5 5
1 2 1 2
SW004 SW004
SW003 SW003
CH + SW SW CH - SW SW
3 4
3 4
6 6
CN001 A1
1.08V
C001 A3
C002 B3
335
R001 A3
R007 R007
R002 A4
1.8K1/10W 1.8K1/10W
R003 A4
R004 A5
R005 B3
5
R006 B4
1 2 R007 B4
SW007 SW007
SW001 A3
SW SW
SW002 A4
SW003 A4
3 4
SW004 A5
SW005 C3
6
SW006 C4
SW007 C4
ZD001 A2
ZD002 B2
SW002 SW001
VOL - VOL +
4 5
41
A
B
C
D