Alarm Board Circuit Diagram - Philips AJ3970 Service Manual

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ALARM BOARD - CIRCUIT DIAGRAM
ALARM BOARD - CIRCUIT DIAGRAM
1411 B3 1414 B4 1421 B1 2435 D4
1412 B3 1430 B2 2443 E2
1415 B5
1413 B4 1416 B5 2420 B2 3445 A3
1 2
A
3445
2K2
1411
2420
1n
To Combi Board REPEAT
ALARM
To 1420
B 1421
EH-S
1
1430
PH-S
2
1
To play select board
3
2
4
5
C
6
D
6404
TLHG4405
E
7406
BC847C
2443
3484
100n
100K
180R
F
1 2
10 - 1
3446 A3 3449 A5 3489 F3 6405 D4
3447 A4 3484 E2 3491 F4 7406 E3
3448 A4 3485 F4 6404 D3 7407 E4
3 4 5
A
3446 3447 3448 3449
6K8 18K 27K 39K
1412 1413 1414 1415 1416
ALARM 2 ALARM 1 SLEEP
ALARM
WAKE UP
RESET
B
To 1431
C
D
6405
2435 TLHG4405
100n
E
7407
BC847C
3489 3485 3491
100K 180R
F
3 4 5
10/11/2012
ALARM BOARD - LAYOUT DIAGRAM
1411 B3 1414 B1 1421 B3
1412 A4 1415 A1 1430 A4
1413 B4 1416 B1 3489 B2
1 2
A
B
1 2
2420 2443 3446
B3 B3
B1
2435 3445 3447
B2 B1 B4
1
A
B
1
World of free manuals
10 - 1
3491 A2 9427 B2
6404 B1 9428 B2
6405 B4 9429 B4
3 4
3 4
3448 3484 B3 7406
B4 B3
3449 3485 A2 7407
A4 A2
2 3 4
2 3 4
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A
B
A
B