Left/Right Amplifier Part - Circuit Diagram - Philips FW-D5/21 Service Manual

LEFT/RIGHT AMPLIFIER PART - CIRCUIT DIAGRAM

1 2
.... Vdc measured during AMPLIFIER ON
V Vdc measured during AMPLIFIER OFF (mute)
Voltages measured at nominal mains voltage and low output signal
A
# : Provision
Note : Some values may varies, see respective parts list for correct value.
B
3321
TO SUPPLY PCB
12K
# 9301
1325
HST1
1 pa
HST1
3322
2
R
C
2320
12K
3
GND_pa
9302
#
pa
4n7
4
L
5 pa
AMP OFF
+3.1V
DC
6 -32V
DC
3352
7 8
100K
pa
D
-32V
-31V
E
-32V
7323
BC556B
F
1 2
11-7
3 4
#
+32V
pa
7329
STK496-070C
pa
2u2
10 IN1
2321
2351
2n2
11
NF1
12 CCC
pa pa
2u2 9328
14 IN2
2n2
470R
13 NF2
2322
3366
2326
pa
pa
-30V
#
-32V
pa
-32V
7320
8 2
-32V
BC547B
-32V
pa
3354 3355
33K 560R
7321
BC547B
-32V
-32V
BC546B
7322
3358
6323
100K
-32V
0V
1N4148
0V
-32V
3347
1K
3 4
5 6
9 3
+VP +VC
3331
4R7
5000
OUT1 6 0V
1u
HST1
T1 5
T2 4
5001
OUT2 7
1u
0V
3332
4R7
15
SUBSTR
1
-32V
#
#
pa
0V
7324
7325
BC547B
BC547B
3348
-32V -32V
1K
-32V
5 6
11-7
7 8 9
3
+32V
GND_L
GND
GND_R
-32V
TO SUPPLY PCB
DC
GND_L
GND_R
#
#
GND_L
GND_R
#
-32V
3139 118 53250...87370 for ...3427 pt2 dd wk0023
7 8 9
6320 E2
3 A9
1321-A C9 6321 D7
1321-B B9 6322 D7
1325 C1 6323 E4
2320 C2 7320 D3
2321 B3 7321 E2
2322 C3 7322 E3
1
2323 C3 7323 F2
+VL
2324 C3 7324 F6
2
GND_L
2326 C4 7325 F5
A
2327 B4 7329 B4
3
GND
2328 C4 9301 C2
2329 B4 9302 C2
4
GND_R
2330 D4 9323 D7
5 2331 B6 9324 D7
-VL
2332 D6 9325 D8
2337 C8 9326 C9
2338 C9 9327 B3
2339 D8 9328 C4
2340 D8
2341 A5
2342 B7
2343 D6
B
2344 F6
2345 F5
2346 F3
2347 E2
2348 E3
2349 D4
1321-B
2350 D5
4
2351 B4
3 LEFT 3320 D2
3321 B2
3322 C2
3323 C2
1
C
3324 C2
3325 C3
RIGHT
2
3326 C3
3327 B4
1321-A
3328 C4
3329 B6
3330 D6
3331 B6
3332 C6
3333 D8
3334 D8
3335 B8
3336 B9
D
3337 D7
3338 D7
3339 E7
3340 E7
3341 F5
3342 F6
3343 F4
3344 F7
3345 F4
3346 F7
3347 F4
3348 F7
3349 D6
E
3350 D3
3351 D3
3352 D2
3353 D2
3354 D2
3355 D3
3356 E2
3357 E3
3358 E3
3359 F3
3360 F3
3361 B7
3362 B7
F
3363 B7
3364 D9
3365 D8
3366 C3
3367 C4
5000 C6
5001 C6
PCS 103 864