Philips MFX450/17, Service Manual

Page: 37 / 54

10-4 10-4
3104 217 06420/07040
LEFT & RIGHT & CENTER & SURROUND AMPLIFIER
STK496-070
1k
100k
From 1265
Monoboard
–VL 5
3
47E
22
µ
+VL
2
1
10
µ
47E
22
µ
BC847B
10k 33k
220E
1000
µ
–VL
–VP
10
56k
µ
–VP
–VP
0E22
NF2 13
8
BC847B
1k5
1k
BC847B
1k5
–VC2
1
CCC 12
IN2 14
NF1 11
470p
1k8
+VP
+VL
+VP
IN1 10
220p
+VP
9
0E22
–VC1
2
OUT2 7
1
4
R
220n
4n7
+VL
+VC
3
OUT1 6
3
2
L
–VL –VL –VL –VL –VL –VL
4
IN_S
IN_S
IN_S IN_S 4E7
µ
1
4E7
220n
A
56k
10p
4E7
1
µ
A
220n
220n
4E7
PTC
Substrate 15
47k
A
4n7
A
SURROUND
47k
10
µ
A A
A A
A
IN_S
1k8
IN_S
220p
56k
IN_S IN_S
470p
A
0E22
–VL
0E22
–VL
100p
100p
chassis
PTC2 PTC1
4 5
47n
IN_S
1k8
IN_C
56k
IN_C
17 NF3
IN_C
220p
IN3
CCC
IN_C
470p
18
14
–VP
10
–VP
µ
10
IN_LR
56k
IN_LR
1k8
µ
100
STK496-270
IN1
NF1
IN_LR
13
12
470p
IN_LR
220p
+VP
11
+VP
19
–VC3 –VC2
3
56k
OUT3 20
4p7
PTC
PTC1
6
PTC2
7
OUT1 8
NF2
IN2
supply Part
–VC1
4
4E7
1
µ
A
220n
220n
4E7
56k
4p7
56k
4p7
16
15
0E22
1k
1k5
0E22
BC847B
1k5
0E22 0E22
BC847B
1k
0E22 0E22
1k
1k5
BC847B
OUT2 9
56k
IN_LR IN_LR
470p
10
µ
220n
220n
A
4E7
1
µ
4E7
220n
220n
A
4E7
1
µ
4E7
10
µ
AA
A
A
1k8
IN_LR
220p
IN_LR
A
47E
A
µ
22
–VP
47E
µ
22
+VP
+VL +VL
–VL –VL
22n
A IN_S
100n
A IN_C IN_LR
22n
BC857B
BZX284/
BAS216
47k
A
A
10n
C3V3
–VP –VP
BC847B
10k
100k
AA
33k
220E
1000
–VP
10k
+VL
µ
BC847B
39k
+5D
REF
BC847B
REF
1N4148
REF
100k
REF
+5D
680E
47k
+5D
BZX79/C6V8
100
µ
REF
BC857B
1N4148
680E
+5D
47k
47k
47k
2
1
L
5
6
4
3
1
2
A
A
A
5
4
3
1
2
6
5
R
8
C
4
7
4n7
100p
100p
4n7
100p
4n7
3 6
3k9
Part
Right in
from Right out
from Left out
Left in
Control
Volume
From
from Center out
Center in
Surround Left in
from Surround Left out
from Surround Right out
Surround Right in
Control
Volume
Part
To/From
amp prot
amp lr on
Supply
Part
Monoboard
From
prot
amp
1520
L
L
L
L
–VPL –VPL –VPL
1k
BC847B
–VP
10k
100k
–VP
10k
100k
BC847B
1k
–VPL –VPL
47n 470E
REF
10k
REF
BC847B
100k
100k
BAS216
–VL –VL –VL
REF
BC857B
µ
10
fmute
A
Substrate 1
47n
–VL
+VL
5
hst
hst
BAS216
470E
470E
470E
470E
470E
10
µ
10
µ
µ
10
100
µ
100
µ
100
µ
µ
100
10p
56k
10p
10p
6
A
amp off
100k
BZX79/
C15
+12
1E
AA A FRC01
SOAR PROTECTION
SURROUND AMPLIFIER FR965 - MFR450
SOAR PROTECTION
CIRCUIT
AMP ON/OFF
PROTECTION
CIRCUIT
LEFT & RIGHT & CENTER AMPLIFIER FR965 - MFX450
HST & DC
AMP ON/OFF CIRCUIT
Mdi-LEU0173/0016
3302
3947
3946
2905
3363
3362
3361
4910
6290
9304
2351
4908
4909
9302
9301
1902
5901
2909
3904
2921
1901
3930
7901
2910
2912
3908
2906
3929
7904
7903
3928
3927
3921
3906
2913
2925
3918
3917 3925
7902
2901
3901
2902
2923
3915
3920
3922
3905
3916
2908
9904
3902
2938
5902
3910
2916
2920
3919
2917
3903
2924
3913
2919
2918
3911
2914
3931 3926
2930
9906
2931
2904
2334
2346
3323
3322
2341
2337
2310
3308
3310
2315
2311
2313
7301
3324
2347
3309
5302
2358
2314
3352
3304
2307
3319
2324
9308
3334
3338
3339
3337
7305
3340
3342
3335
3341
7306
3345 3344
3343
3336 7307
2316
3314
2319
9306
2306
2359
2321
3353
3311
5304
2360
2333
3354
3316
5306
2349
2330
3315
2325
3328
2352
3301
2302
9309
9310
2911
2357 2301
7304 6304
6305
3356
2365
3329
3330 3326
3327
2350
7309
3357
7259
3272
7256
6279
3264
3259 3260
6270
2280
7255
6271
3263
3307
3305
3306
1302 1305 1301
2371
2374
2375
2372
2376
2373
3267
4904
3358
3360
3359
7310
3937
3936
7909
3935
2298
3251
3943
7260
3252
3253
6289
7261
2297
2939
3914
2941
2940
6266
3276
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
A A
B B
C C
D D
E E
F F
G G
H H
I I
J J
K K
L L
M M
N N
O O
1301 B19
1302 B18
1305 B18
1901 K18
1902 M4
2280 H7
2297 E4
2298 E5
2301 K3
2302 M3
2306 L3
2307 A15
2310 B8
2311 B9
2313 A9
2314 C16
2315 A9
2316 C8
2319 C9
2321 D16
2324 E15
2325 F8
2330 G8
2333 E16
2334 D8
2337 D9
2341 E9
2346 F9
2347 E14
2349 N3
2350 C6
2351 C14
2352 O3
2357 K3
2358 C16
2359 D16
2360 E16
2365 C4
2371 B19
2372 D19
2373 E19
2374 C19
2375 D19
2376 E19
2901 M6
2902 M5
2904 L15
2905 J9
2906 K10
2908 L16
2909 K18
2910 J10
2911 O8
2912 J10
2913 L9
2914 L10
2916 M16
2917 L18
2918 M10
2919 M10
2920 M16
2921 L16
2923 N6
2924 N5
2925 L7
2930 L18
2931 L18
2938 J15
2939 J15
2940 M15
2941 M15
3251 E5
3252 F5
3253 F5
3259 G6
3260 G7
3263 H4
3264 H6
3267 I6
3272 H4
3276 H6
3301 M2
3302 B6
3304 A14
3305 D17
3306 B17
3307 E17
3308 B9
3309 B15
3310 A9
3311 C15
3314 C9
3315 G8
3316 E15
3319 E14
3322 D9
3323 E9
3324 E13
3326 D6
3327 C6
3328 N2
3329 C5
3330 D5
3334 G12
3335 G14
3336 G10
3337 G12
3338 G12
3339 G13
3340 G14
3341 G14
3342 G15
3343 G11
3344 G10
3345 G10
3352 C16
3353 D16
3354 E16
3356 D3
3357 C4
3358 C6
3359 D6
3360 E6
3361 B8
3362 C8
3363 D8
3901 M5
3902 J15
3903 L17
3904 K17
3905 K15
3906 K10
3908 J10
3910 L15
3911 L10
3913 M10
3914 M15
3915 N5
3916 K16
3917 L7
3918 L7
3919 M16
3920 L6
3921 N12
3922 N14
3925 L6
3926 O12
3927 O12
3928 O13
3929 O14
3930 O14
3931 O15
3935 L8
3936 J7
3937 J7
3943 E5
3946 J9
3947 L9
4904 J9
4908 G9
4909 M9
4910 J6
5302 B15
5304 C15
5306 D15
5901 K15
5902 L15
6266 G6
6270 H7
6271 H6
6279 I4
6289 F4
6290 E4
6304 C4
6305 C3
7255 G6
7256 H5
7259 H4
7260 F5
7261 E4
7301 A10
7304 C5
7305 G13
7306 G13
7307 G11
7309 C4
7310 D7
7901 J11
7902 L6
7903 N13
7904 N14
7909 J8
9301 L2
9302 N2
9304 A11
9306 F12
9308 H13
9309 L2
9310 N2
9904 K16
9906 M18
0V
+5V
–40V –40V
–39,5V
+40V
+39,5V
+40V
–40V
–40V
–39,5V
–39,5V
+40V
+5V
–39,5V
+39,5V
+40V
–39,5V
–40V –36V
–39,5V
–39,5V
–39,5V
0V
0V
–38V
0V
0V
–39V
+4,9V
–39,5V
0V
+5V
–40V
0V
+5V
+4,3V
–40V –40V
+5V +5V
+5V
–40V
+3,1V
–39V
–39,5V
0V
+4,4V
–38V
+3,1V
–39,5V –39,5V
–39,5V
–37V
–39,5V
–38V
0V
+40V
+39,5V
0V
–40V –40V
–40V
–35,5V
–40V –40V –40V
–39,5V
–40V –40V –40V
+3,1V
–35,5V
- Voltage measured during normal operation
- Source position : Tuner FM
- No special features ON .....V
–40V
0V
0V
+39,5V +40V
0V 0V
–40V
–40V
–40V
+3,1V
–40V –40V
0V
0V
+40V
0V
0V
–40V
0V
0V
0V
0V
+12V
LEU0173R/0016
–40V
–38,2V
2
1
L
5
4
3
1
2
6
5
R
8
C
4
7
4n7
100p
100p
4n7
100p
4n7
3 6
1303 1304
2317
2322
2331
2328
2339
2335
Only in FR965
Only in MFX450