Philips FW-M777 Service Manual page 54

LEFT/RIGHT AMPLIFIER & SUPPLY BOARD - CIRCUIT DIAGRAM (PART 2)
1321-A C10 2322 F1 2331 B4 2340 A3 2352 A7
1321-B B10 2323 E3 2332 B2 2341 A5 2353 E7
1322_B B10 2324 B2 2333 C3 2342 A5 2355 E7
1323_B D10 2325 A4 2334 C2 2343 E5 2360 B9
1330 B10 2328 B3 2335 D4 2344 E5 2361 B9
2320 C1 2329 B3 2336 D4 2345 F4 2362 B10
2321 E1 2330 B4 2339 E4 2350 A7 2363 C9
1 2
8240
2390
*
A
4n7
gnd_pa
gnd_pa
3334 2u2
/50V
AF_left
3K9
2324
9320
*
gnd_pa
B
9321
*
3338
22uF/50V
AF_right
1K8
2332
A1
2320
10n gnd_pa
-54v
C
6320
1N4148
5v 7320
BC556B
AMP_ON
3.3v
7321
BC546B
-53v
3324
-54.6v
D
100K
-54.6v 3325
*
-54.6v
-54v
E
3331
7323
BC546B
100K
-54v
0v
7324
BC556B
-54v
F
# : For Phase Inverse only
* * : For Non Phase Inverse only
* : PROVISION
& : For 110-150W only
% : For 70-100W only
Note : Some values may varies, see respective parts list for correct value.
1 2
9-6
2364 C9 3320 C1 3327 D2 3334 A1
2365 C10 3321 C1 3328 D3 3335 B2
2370 E5 3322 C1 3329 E1 3336 B2
2371 A5 3323 D1 3330 E1 3337 B3
2372 C3 3324 D1 3331 E1 3338 B1
2390 A2 3325 D2 3332 F2 3339 C2
2391 C3 3326 D3 3333 F2 3341 C2
3 4
2340
2325
47p
100p
3344
3342
22R 56K
*
gnd_pa
*
gnd_pa
G
#
gnd_pa
# M
#
#
N
gnd_pa
O
gnd_pa
P
2335
Q
470p R
-52v 3326
33K 220R
7322
BC546B
3343
-55v
56K
2339
100p
6323
1N4148
0v
-55v
7325
BC546B
-53v
3 4
3342 A4 3349 F8 3356 C7 3363 C7 3370 A8
3343 E4 3350 B6 3357 C7 3364 D7 3371 B8
3344 A3 3351 B6 3358 C8 3365 D7 3372 B9
3345 A6 3352 B6 3359 C6 3366 D7 3373 B9
3346 E6 3353 B7 3360 C6 3367 D8 3374 C8
3347 F4 3354 B7 3361 D6 3368 B8 3375 C9
3348 B7 3355 B7 3362 D7 3369 B8 3376 D9
5 6
3345
330R
30v
B
15v
C
70W, 100W
-30v
55v
E % 9341
A
110W
& 9961
3350
7326
STK412-030(110/135W)
0R33
7330
STK442-110(100W)
3351
VCC+
-30v
0R33
VCC-
-55v
SUB 0v H
CH1+RE I
F
CH1-RE
CH2-RE
CH2+RE
L
PRE-
-54v 3359
0R33
PRE+
54v
3360
CH1|IN
0v
0R33
CH1|NF
0v
K
BIAS
-52v
CH2|NF J
0v
CH2|IN
0v
*
3346
330R
-15v
D
5 6
9-6
3377 F9 3393 C3 6322 E1 7320 C1
3378 F9 3395 D4 6323 E3 7321 D2
3379 D9 3404 C2 6324 F8 7322 D2
3380 D10 5300 B8 6330 D10 7323 E1
3381 B9 5301 C8 6331 D9 7324 F1
3382 B9 6320 C1 6332 A7 7325 F3
3392 C3 6321 C1 6360 A8 7327 B7
7 8 9
%
&
*
5300
&
BC556B *
0v
3371
*
7327
4R7
0v
-55v
*
GND_AL
5301
*
BC556B
*
0v
7328 * 3374
4R7
0v
-55v
*
*
GND_AR
*
%
*
&
& *
7 8 9
7328 C7 9329 E9 9355 C7
7329 F10 9330 C4 9356 D7
7330 B5 9331 C4 9360 D10
8240 A2 9333 D4 9361 C10
9320 B1 9341 B5 9362 C10
9321 B1 9342 B9 9363 C10
9323 A9 9343 D9 9961 B5
10
A1
B1
A
AMP_LR_DC
SPKR LEFT
1321-B
4
+
1322_B
3 -
B
GND_AL
EH-B
1330
1
2
3
gnd_s
To Matrix -Surr
C
9361
**
1 +
2
-
# 9363
1321-A
SPKR RIGHT
# 9362
9360
**
*
1323_B
GND_AR
D
*
B2
E
A2
7329
*
BC547B
SAT
F
3139 118 55340...for 91570...3472 pt1 dd wk0151
10