Audio Amplifier Left Low - Philips FM24 Service Manual

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Electrical Diagrams and PWB Layouts
Audio Panel & Supply: Left Low
2409 D3 2416 C4 2430 C7 2440 E6
2410 B3 2418 D5 2434 B8 2455 D7
2415 C4 2419 D5 2435 B8 2459 E8
1
AUDIO AMPLIFIER
LEFT LOW
F428
A
2V / div DC
1µs / div
F430
2V / div DC
B
1µs / div
F465
5V / div DC
1µs / div
C
L_LOW
FROM DIAGRAM
FILTERS
D AU_EN_NOT
E
1
FM24
2460 E8 3401 C3 3404 D2 3408 C4 3411 C3
2465 D9 3402 D2 3406 C3 3409 D4 3415 B4
2466 D9 3403 C2 3407 C3 3410 B3 3418 D4
2 3 4
F401
3403 3401
GND_I GND_I
1K 1K 7415
LM311D
7403 5
BAL
BC847BW
6
STR|BAL
3406 F407
2
0V
8K2
GND_I
3
0V
-9V8
3402
7402
BC847BW
4K7
GND_I GND_I
GND_I
VCC_10_NEG
2 3 4
7. 35
3425 B5 3430 B6 3440 D6 3462 D8 5465 C9
3427 C5 3436 B7 3455 E6 5435 B8 6428 C5
3428 B5 3437 C8 3461 E7 5460 E8 6434 B7
5 6
VCC_10_POS
3425 3428
F428
2K2 1K
14V2
6428
3427
7430
BC817-25
9V7 2K2
BAS316
-0V04
8
V+
F430
-0V04
7
7455
-2V
BC807-25
GND V-
-14V2
1 4
7440
BC847BW
3440
10K
-14V2
GND_I GND_I
GND_I
5 6
Digitized in Heiloo, Holland
6435 C7 6459 E7 7403 C2 7440 D7 7465-2 C8
6455 D6 6460 D7 7415 C4 7455 D6 F401 C3
6456 E6 7402 D3 7430 C6 7465-1 D8 F407 D4
7 8 9
VSND_POS
GND_O GND_O
F437
7465-2
IRF7343
3437 14V3
3
4
10R
5 6
5465
33u
F465
0V
7465-1
IRF7343
7 8
3462
2
GND_O GND_O
1
-14V4
10R
-14V4 F462
0V
GND_O GND_O
VSND_NEG
7 8 9
31/8/2014
F428 B6 F462 D8
F430 C6 F465 C8
F437 C8
10
A
B
C
TO DIAGRAM
OUT_LL
SUPPLY & DC
PROTECTION
D
E
CL 26532038_018.eps
030502
10