Philips MC-M570/21 Service Manual page 51

1 2
3
COMBI BOARD
S O & P
UPPLY, SCILLATOR RE
5104
3304
A
+5V6
Bead
22R
7310
100MHz
2
B
C
7315
LM317P
22.9V
11.7V
1 +D I O
D
A
10.45V
7317
E
BC847BW
F
7321
LM317P
10.9V 5.6V
1 +D2 I O
A
G
150R
4.35V
3343
H
1 2
11-10
3 4 5
-A P
MPLIFIER ART
+5V_AMP
4.25V
+5V_AMP
3 4 5
3
3312
4.1V
100K
2
OZ_SW
OZ_SW = H -> 425kHz
OZ_SW = L -> 500kHz
1 2
+12V_M
+12V_A 1 2 3 5
+D
0V
BZX384-C3V3
3322
7319 2.2V 4.7V
LOW_PWR_CTRL
0.65V
10K VOL_LEFT
1
6300
1
1 2 3
+5V6
V_MID
2
VOL_RIGHT
1
3 4 5
6 7 8
5300
220p 220p
2300 2301
CSBLA
500K
3302
7309
BC847BW
100K
3341
4.25V
14
6K8
1 2 5 6
7312-A
0V
7312-C
7
2303
3324
470p
1M
3318
BC857BW
7316
100K
425K
CSBLA
220p
2314
5302
3317
33K
2324
3332
3K3
4u7
2331
3334
5
1K
4u7
6
3
2329
3338 3339
2
1K 2K2
4u7
6 7 8
⁄
for wave forms see chapter 11-4 Service Hints
11-10
9 10 11 12
2334
OSCILLATOR
33p
7312 = 74HCU04D
3 4 11 10 9
7312-B 7312-E
7312-D
4.2V
13 12
7312-F
4.2V
3327 +12V_A
11.5V
PRE - AMPLIFIER
33R
2326
100p
3328
8K2
8
2330 2580
3340
7
5.2V
470R
22u 22u
7320-B
4
NJM4560
A
+5V6
3329
2
AMP_MUTE
7323
2K2
2327
BC817-25
100p
3336
Adjust to
0V ±1mV DC on Speaker Terminal
12K
2328 2224
3337
1
5.2V
470R
22u 22u
7320-A
NJM4560
A
+5V6
3319
2
AMP_MUTE
7324
2K2
BC817-25
Power2003 Class D Combi-Supply, Osc & Pre-Amp Part 2003 02 07
9 10 11 12
Attention:
Adjustment to 0V ±1mV has to be done with 'cold' set.
After operating a few minutes the value may increase up to 30mV.
2224 G11 3580 F4
2300 A7 4301 A5
2301 A9 5104 A2
2303 B6 5300 A8
2304 D3 5302 D8
2305 B5 6300 E4
2306 A2 7309 B9
2309 B3 7310 A3
A
2312 E1 7312-A C6
2313 C6 7312-B C9
2314 D9 7312-C B8
2316 D2
7312-D C11
2317 E10 7312-E C10
2318 F8 7312-F D10
2319 A1 7315 D1
2320 H1 7316 C9
B
2321 G3
7317 E3
2322 G3 7319 E3
LOZ
8 2324 E7 7320-A G9
4
2325 G8 7320-B F9
2326 E9 7321 F2
2327 F9
7323 F11
0V 2328 G11 7324 H11
2329 G7 9284 H4
2330 E11 9288 G4
C
2331 E7
2332 F7
ROZ
5 2333 G7
2334 A10
2335 F12
2336 H12
0V
2337 F1
2580 E11
D
3302 B7
3303 B5
3306 G12
3307 H12
3311 A3
3312 B6
3313 D2
3314 E3
E
3315 C5
3316 F8
3318 C7
3319 H10
LNF
3320 B10
4
3321 E2
3322 E4
3323 F2
3324 C8
F
3325 F12
3326 G12
3327 D10
3328 E9
3329 F10
3330 F11
3331 H11
3332 E8
G
3334 E7
3336 G9
5 3337 G10
3338 G7
RNF
3339 G8
3340 E10
3341 B8
3342 G2
H
3343 G2
3344 G2
3345 H2
3346 E1
3347 G6