Philips FW-R88 Service Manual page 53

1 2 3 4
POWER 5-VA L/R AMPLIFIER BOARD
70W/100W Version
A
B
C
1325
3321
4
L
10k
D
9321
2331
5
GND
5330
100p
4,7uH
for 100W only
E
Bead on wire
3322
6
R
10k
9322
F
3323
-42V
7326
100k
BC547B
-42V
G
3347 3348
33k 100R
AMP 3345
3 4,7V
7325
100k
OFF
BC547B
-42V
-42V
-41V
-42V
H
8
SAT
SAT
7
HST1
HST1
I
1
ab
ab
2
DC
DC
J
3351
100k
-42V
-42V
7350
BC556
-42V
K
0V
............. Vdc measured during AMPLIFIER ON
V EVM
L
V Vdc measured during AMPLIFIER OFF (mute)
Voltages measured at nominal mains voltage and low output signal
1 2 3 4
9A-7
5 6 7 8
3333
47R
9324
2337
4p7
3331
56k
9
7329 3
100W = STK496-090
70W = STK496-070
2u2/50V
2n2 for /37
2323 CH1
IN1
10
+
3391
NF1
-
220
11
for /37 only
CCC
12
-40V -42V
2n2 for /37
2324
470p
2u2/50V CH2
IN2
14
+
NF2
-
13
-40V -42V
1
8
3332
56k
2338
4p7
9326
-42V
7327
BC546B
6339
0V
0V
7324 7323
1N4148
BC546B BC546B
3338 3337
-42V -42V
1k 1k
-42V
SOAR PROTECTION
5 6 7 8
9 10 11 12
, STK496-090C, STK407-090, STK407-090E,
STK407-090K, STK407-100, STK407-110
, STK496-070C, STK407-070
OUT1
6 0V
T1
5
THERMAL HST1
T2
DETECTOR
4
OUT2 7
0V
only for
70W Versions
2
3334
47R
9 10 11 12
9A-7
13 14 15 16
3
1
+42V
+VH
2
+42V
+VL
2k2 for
100W Versions
DC
100W Versions
3363
82k
4R7
5321
1uH
L
GND
3
SUPPLY
4
3364 GROUND
100W Versions
4R7
82k
5322
1uH
only for
100W Versions
R
GND
5
82k for 82k for
100W Versions 100W Versions
3k9 for 3k9 for
100W Versions 100W Versions
6
-42V
-VL
7
-42V
-VH
ONLY FOR SURROUND VERSIONS
13 14 15 16
17 18 19
1321 D18
1325 D 1
1328 G18
2321 B 6
2322 H 6
2323 D 4
2324 F 4
2325 D 5
A
2326 F 5
2327 E 6
2328 G 6
2329 D 6
2330 F 6
2331 E 3
2333 E 5
2334 G 5
2335 B 6
2336 H 6
2337 B 6
2338 H 6
B 2341 K 7
2342 K 6
2343 K 3
2344 A 8
2345 J10
2346 B10
2347 I11
2348 A10
2349 J11
2350 A 7
2351 J10
C
2352 H 5
2353 E14
2354 F14
2355 E18
2356 G18
2363 A 7
2364 J10
2365 K 4
SPEAKER CLICKFIT
2366 C12
1321 2367 B8
2368 I8
D
2369 I9
4
3 A16
3321 D 2
+L
3322 F 2
3323 F 3
3324 G 4
3325 D 4
3326 F 4
3327 D 5
3328 F 5
-L
E 3329 E 5
3330 G 5
3 3331 C 6
3332 H 6
3333 A 8
3334 J11
GND_L
3335 K 8
3336 K 6
3337 K 8
3338 K 6
1 3341 K 8
F
3342 K 5
3343 K 9
3344 K 5
+R
3345 G 2
3346 H 3
3347 G 3
3348 G 4
3350 K 5
3351 J 4
-R
3352 J 3
3353 K 5
2 G
3355 C12
3356 I12
3358 G 5
GND_R
3363 D14
3364 E14
1328
3365 D13
3366 F13
1
3367 H15
3368 H14
3369 D18
H 3370 D17
3383 H15
3384 H14
3385 D12
3386 C13
3387 E17
3388 G17
2
3389 F13
5321 D14
5322 F14
5323 D14
I
5324 F14
6325 B12
6326 I12
6327 A13
6328 I13
6329 A13
6330 I13
3
6333 G14
6334 G14
6337 J 3
6339 K 5
J
6360 C12
7323 K 7
7324 K 7
7325 H 4
7326 G 4
7327 J 4
7329 C 6
7350 K 4
9321 D 2
9322 F 2
K 9323 A12
9324 J 6
9325 J 6
9326 J 6
9327 K 9
9328 K10
9329 I12
9330 F12
9331 D12
9358 G14
9359 G15
L
P5VA L/R Amplifier 70/100W 2001 01 18
17 18 19