Philips MC-500 Service Manual page 37

REGULATOR BOARD - CIRCUIT DIAGRAM
1171 C2 1403 E1 2404 C5 2408 D5 2412 F3
1400 B9 2400 A5 2405 B7 2409 E4 2413 E4
1401 A1 2402 A7 2406 B8 2410 E5 2415 D7
1402 A1 2403 C5 2407 B9 2411 C3 2416 D8
1
A
EH-B EH-B
1401 1402
1 1
2 2
+12V_A
3 3
LPC
4 4
+12V_M
5 5
+A
B
6 6
7 7
+A/2
8 8
9 9
+5V6
10
5V_VCD
11
VCD_ON
TO COMBI 14.5V
C
1171
T1A
* T2A5 for CDR
TO CDR MODULE
6
5
GND_M
D
4
VCD_GND
3
2
5V_VCD
1
EH-B
1403
2
E
3 +12V_M
7420
STP16NE06
1
3436
10K
7419
BC547B
F
7421
BC547B
GND_M
* FOR CDR ONLY
1
9-3
2417 D7
3405 A4 3410 B6 3414 B6 3418 B8 3422 D3
2420 E6 3406 B5 3411 B8 3415 B7 3419 A8 3423 D2
3403 A4 3407 B5 3412 B6 3416 B7 3420 B8 3424 E2
3404 B4 3409 C5 3413 B6 3417 C7 3421 A9 3425 E3
2 3 4
+A
29V
27.3V
GND_A
LPC
7401
BC547B
5V
4.2V
+5V6
5V6_GND
5.7V
VCD_GND
5V6_GND GND_A
9172
~ ~
~
9174
3423
7413
22K
BDW94C
3 2
1
3424
470K
+A
7414
BC547B
7415
BC547B
3437
VCD_ON
100K
5V6_GND
2 3 4
3435 E7 3439 E1 6402 B5 6407 E4
3426 E3 3431 D6
3427 E4 3432 D6 3436 E2 3440 F1 6404 C6 6409 E5
3428 F4 3433 D7 3437 F2 6400 B4 6405 B7 6412 D7
3430 D6 3434 D7 3438 F1 6401 C4 6406 B8 6413 D7
5 6
11.3V
9401
7403
FOR NON-LPS VERSION ONLY
BDX53B
7405
BD438
12.4V
27.9V
2400
7402
BC557B
2u2 GND_M
+A
3406
1K
9.91V
7407
BC547B
7408
BC547B
1.4V
0.65V
7406
BC547B
+5V6
7410
7417
BD438
5.7V
14.1V 1 3
IN OUT
GND
L7805
2
0.7V
2417
1n
7411
BC547B
5V6_GND
For NON CDR
VCD_GND
* FOR CDR ONLY
#
PROVISION
* FOR CDR ONLY
~
FOR NON-CDR ONLY
Note : Some values may varies, see respective parts list for correct value.
5 6
9-3
7401 B4 7406 C6 7410 D7 7414 F3 7420 E1 9401 A6
7402 A4 7407 B6 7411 E6 7415 F4 7421 F2 9404 D3
7403 A5 7408 B7 7412 E7 7417 D5 9172 D2 9405 D4
7405 A6 7409 B9 7413 D3 7419 F1 9174 D2 9406 E1
7 8
+12V_A +12V_M
11.3V
11V
3411
GND_A
7409
BC327-25
470R 10.35V
6406
BZX79-C4V7
6.34V
3415
68R
VCD_GND
5V_VCD
7412
BC547B
3139 118 53870...8239_210_88960 for...3441 pt5
8
7
9
A
B
1400
1
2
EH-B
For Fan
C
D
E
F
9