Philips FW-R8/17 Service Manual page 67

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1 2 3
POWER 5-VA L/R AMPLIFIER BOARD
70W/100W Version
A
B
C
1325
3321
4
L
10k
D
9321
2331
5
GND
4n7
E
3322
6
R
10k
9322
F
G
AMP 3345
3 4,7V
100k
OFF
-42V
-42V
-41V
H
8
SAT
SAT
7
HST1
HST1
I
1
ab
ab
2
DC
DC
J
-42V
K
............. 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
9-7
4 5 6 7
2337
4p7
3331
56k
9
7329
2u2/50V
2n2 for /37
2323
IN1
10
+
3391
NF1
-
220
11
for /37 only
CCC
12
-40V -42V
2n2 for /37
2324
470p
2u2/50V
IN2
14
+
NF2
-
13
-40V -42V
3323
-42V
7326
100k
BC547B
-42V
3347 3348
33k 100R
8
3332
7325
BC547B 56k
-42V
2338
4p7
9326
-42V
3351
7327
100k BC546B
-42V
6339
0V
0V
7324 7323
7350 1N4148
BC546B BC546B
BC556
3338
-42V -42V
0V 1k
-42V
SOAR PROTECTION
4 5 6 7
8 9 10 11
3333
47R
9324
3
100W = STK496-090
70W = STK496-070
CH1
OUT1
6 0V
T1
5
THERMAL
T2
DETECTOR
4
CH2
OUT2 7
0V
1
2
3334
47R
3337
-42V
1k
8 9 10 11
Digitized in Heiloo Netherlands
9-7
12 13 14 15
3
+42V
+42V
2k2 for
100W Versions
100W Versions
3363
82k
4R7
5321
1uH
L
GND
HST1
3364
100W Versions
4R7
82k
5322
1uH
only for only for
70W Versions 100W Versions
R
GND
82k for 82k for
100W Versions 100W Versions
3k9 for 3k9 for
100W Versions 100W Versions
-42V
-42V
12 13 14 15
2/4/2018
16 17 18 19
1
+VH A
2
+VL
B
C
DC
SPEAKER CLICKFIT
1321
D
4
+L
-L
E
3 3
SUPPLY
4 GND_L
GROUND
1
F
+R
-R
5 2
G
GND_R
1328
1
H
6
-VL
2
I
7
-VH
3
J
ONLY FOR SURROUND VERSIONS
K
L
P5VA L/R Amplifier 70/100W 2000 03 27
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
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
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
2352 H 5
2353 E14
2354 F14
2355 E18
2356 G18
2363 A 7
2364 J10
2365 K 4
2366 C12
2367 B8
2368 I8
2369 I9
3 A16
3321 D 2
3322 F 2
3323 F 3
3324 G 4
3325 D 4
3326 F 4
3327 D 5
3328 F 5
3329 E 5
3330 G 5
3331 C 6
3332 H 6
3333 A 8
3334 J11
3335 K 8
3336 K 6
3337 K 8
3338 K 6
3341 K 8
3342 K 5
3343 K 9
3344 K 5
3345 G 2
3346 H 3
3347 G 3
3348 G 4
3350 K 5
3351 J 4
3352 J 3
3353 K 5
3355 C12
3356 I12
3358 G 5
3363 D14
3364 E14
3365 D13
3366 F13
3367 H15
3368 H14
3369 D18
3370 D17
3383 H15
3384 H14
3385 D12
3386 C13
3387 E17
3388 G17
3389 F13
5321 D14
5322 F14
5323 D14
5324 F14
6325 B12
6326 I12
6327 A13
6328 I13
6329 A13
6330 I13
6333 G14
6334 G14
6337 J 3
6339 K 5
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
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