Philips MC160 Service Manual page 32

CIRCUIT DIAGRAM - COMBI BOARD (Part 3)
0250 E8 2250 D4 2254 D8 2258 F3 2262 C11 2266 A10 3251 A6
1250 C1 2251 C5 2255 D8 2259 F4 2263 B13 2267 D4 3252 G3
1251 D2 2252 C8 2256 A4 2260 G5 2264 C10 2268 D8 3253 G4
1252 H2 2253 D5 2257 A5 2261 A10 2265 C13 3250 A4 3254 G5
1 2 3
COMBI BOARD - SUPPLY PART
A
B
T250
C
6250
(MC118)
(MC118) 1N4003
(MC148)
1250
6251
1 1251
1
T251
(MC118) 1N4003
2
2 9253
3
(MC148)
3
6252
(MC118)
4
D
EH-B 1N4003
EH-B
6253
T252
(MC118) 1N4003
T253
E
F
G
1252
EH-B T257
1
H
T258
to 2
+C
Low Power Standby (L.P.S.) T259
3
Transformer
T260
4
STANDBY
1 2 3
10 - 3
3255 B10 3259 C11 3263 C10 3267 E12 3271 F10 3275 F11 3279 H13 3283 B12
3256 B10 3260 C11 3264 C13 3268 E12 3272 G10 3276 G12 3280 H14 3284 B12
3257 B10 3261 C11 3265 D11 3269 E12 3273 G10 3277 H12 3281 B12 4250 B14
3258 B11 3262 C12 3266 D12 3270 G8 3274 H10 3278 G13 3282 B12 6250 C3
4 5 6
2256
6266
3250 3251
470R 2K2
22u 1N4148
6267
1N4148
(MC148)
(MC148) (MC148)
(MC118)
9251
+AMP
T254
+B
mgc_models (MC148)
(MC118: 4M7 16V)
(MC148) (MC148)
(MC148: 3M3 16V)
T256
Recognition
6269
Mains Breakdown
1N4148
6270
3254
PWRDWN
1N4148 2K2
4 5 6
6251 C3 6255 C6 6259 C7 6263 D7 6267 B5 6271 G5 6275 G12 7253 B13
6252 D3 6256 C6 6260 D6 6264 D7 6268 A6 6272 B11 7250 A10 7254 D12
6253 D3 6257 C7 6261 D6 6265 D7 6269 F4 6273 D13 7251 B10 7255 E12
6254 C5 6258 C7 6262 D6 6266 A5 6270 G4 6274 G9 7252 C11 7256 F11
7 8 9 10
BDW94CFP
7250
-8V2 +A
(MC118)
7251
BC847B
3263
STANDBY
1K
MC118 : 1k
(MC148)
MC148 : 4k7
T255
+A
(MC118) (MC148)
(MC148)
(MC118: 3M3 25V)
(MC148: 4M7 25V)
PAD
P_GND D_GND A_GND
0250
to
BOTTOM
PLATE
+C
3271
4R7
(no L.P.S.)
3272
9255
+B
4R7
3270
6274
3273
1N4003
3R3
4R7
(L.P.S.) (L.P.S.)
7 8 9 10
10 - 3
7257 G11 7261 H13 9254 D13 T251 D2 T255 D8 T259 H3 T263 G13
7258 G10 9251 C4 9255 G9 T252 D2 T256 E4 T260 H3 T264 G14
7259 H10 9252 B14 9256 D11 T253 E2 T257 H3 T261 A14
7260 G13 9253 D3 T250 C2 T254 D4 T258 H3 T262 D13
11 12 13
mgc_models
(MC118)
BC368
7253
BC847B
7252
3264
MC118 : 47u
1K
MC148 : 4u7
BC369
3265
7254 T262
9254
+CD_MTF_MOTOR
+B
2R2
6273
9256
1N4003
(forseen only)
3269
7255
STANDBY
BC847B
22K
3275
470R
BC327-25
7256
BC327-25
T263
7257
BC327-25
BC807-25
7258
7260
3278
47K
7259
BC847B
7261
BC847B
11 12 13
14 15
A
T261
+12V BACKLIGHT
ETF_MOTOR (MC148)
9252
+AMP
(MC148)
4250
+12V_AF TUNER
B
+12V_AF TUNER
ETF_AF
(MC148)
C
D
CD SERVO
MTF_MOTOR (MC118)
E
F
+5V6 uP
CD
G
T264
+5V6_S AF
RDS
MTF_AF (MC118)
ETF_LOGIC (MC148)
H
3280
STANDBY
22K
14 15