D Board Schematic Diagram - Siemens MCM-19T1 Service Manual

MCM-19T1

D BOARD SCHEMATIC DIAGRAM

Schematic Diagrams
— 23 —
D board
2. mcm D schem.p65 1
— 24 —
5/20/99, 8:16 AM
D BOARD TRANSISTOR D BOARD IC VOLTAGE LIST
VOLTAGE LIST
IC401 IC603 IC652 IC703 IC805
pin volt pin volt pin volt pin volt pin volt
B C E
Q501 0.36 5.89 GND 1 1.18 1 7.71 A 2.48 1 -0.05 1 11.91
2 16.30 2 6.68 G GND 2 -0.05 2 4.18
Q502 5.89 11.94 5.97 30
Q503 5.89 GND 5.97 3 -15.99 3 GND K 6.70 3 -0.04 3 4.18
Q505 -0.61 -26.0 GND 4 -16.49 4 5.93 IC701 4 -0.07 4 5.50
Q507 2.08 6.34 1.46 5 0.14 IC604 pin volt 5 -0.08 5 8.82
Q514 -0.09 11.94 0.46 6 15.96 pin volt 1 0.12 6 -0.72 6 3.90
I 7.20 2 0.51 7 -16.59 7 GND
Q515 4.10 92.40 3.57 7 1.18
Q516 0.02 92.40 GND IC502 G GND 3 0.52 8 GND 8 0.15
pin volt VC 5.02 4 0.52 9 16.38 9 GND
Q517 3.48 GND 4.10
Q518 4.49 GND 5.10 1 98.14 O 6.35 5 0.52 10 N.C. 10 8.26
2 95.30 IC605 6 0.10 11 4.60 11 4.47
Q601 16.41 6.53 16.41
Q605 4.60 0.04 GND 3 87.00 pin volt 7 -16.51 12 GND 12 5.01
4 97.00 1 6.51 8 GND IC704 13 5.81
Q606 0.08 16.41 GND
Q607 1.73 0.08 GND 5 103.20 2 16.39 9 16.29 pin volt 14 5.81
Q640 3.16 0.00 GND IC601 3 4.56 10 N.C. 1 -0.29 15 4.98
pin volt 4 GND 11 3.03 2 -0.31 16 11.30
Q656 4.60 0.00 GND
Q657 0.00 7.72 GND 1 0.25 5 N.C. 12 GND 3 1.18 17 11.94
2 1.20 6 12.02 IC702 4 1.18 18 6.52
Q658 0.00 6.46 GND
Q670 0.00 11.94 GND 3 2.13 7 5.07 pin volt 5 -16.52 19 7.98
4 0.01 IC606 1 1.59 6 1.18 20 5.73
Q706 1.97 66.20 1.41
Q707 1.32 GND 1.97 5 GND pin volt 2 1.59 7 1.18 21 GND
6 4.86 1 5.07 3 -16.52 8 -0.02 22 4.16
Q801 0.02 5.81 GND
Q802 4.60 0.02 GND 7 17.40 2 1.15 4 0.08 9 -0.02 23 4.18
8 1.88 3 GND 5 16.34 10 16.34 24 4.18
9 6.52 4 0.04
All voltages are in V
D BOARD TRANSISTOR
D
VOLTAGE LIST
[POWER DEFLECTION]
G D S
Q504 -12.24 -3.17 -16.46
2
1
Q506 178.50 93.70 182.20
Q508 0.07 43.70 GND
Q509 0.07 41.30 GND
Q510 0.00 41.40 GND A
Q511 5.02 0.00 GND
Q512 5.02 0.00 GND
Q513 0.07 40.43 GND
Q602 4.85 157.80 GND
Q901 179.10 89.20 182.20
Q902 7.98 66.50 GND
B
All voltages are in V
D BOARD SEMICONDUCTOR
C
LOCATION
DIODE IC
D401 F7 IC401 F6
D405 G6 IC502 F4
D501 E4 IC601 D3
D502 D5 IC603 F3
D503 C4 IC604 I1
D504 D6 IC605 H3
D
D505 D4 IC606 E3
D506 C6 IC652 F2
D508 D6 IC701 H7
D511 F4 IC702 I6
D601 C2 IC703 E6
D603 E2 IC704 I7
D604 E3 IC805 H5 E
D605 E2 TRANSISTOR
D608 D3 Q501 I3
D610 I2 Q502 I3
D614 F3 Q503 I3
D615 E1 Q504 E4
D617 G3 Q505 D5
F
D618 I2 Q506 C4
D619 I3 Q507 E5
D631 F2 Q508 G4
D632 G3 Q509 G5
D633 E2 Q510 G5
D640 F3 Q511 G5
D641 F3 Q512 G6
G
D648 G2 Q513 F6
D649 G2 Q514 D6
D650 G2 Q515 F4
D651 G2 Q516 F4
Q517 F4
D652 F1
D653 G1 Q518 E6
H
D654 F1 Q601 H2
D655 G1 Q602 E2
D656 G1 Q605 F3
D660 I5 Q606 I2
D670 B4 Q607 I2
D802 H4 Q640 F3
I
D803 G3 Q656 G3
Q657 F3
D901 B4
D902 B4 Q658 F3
D903 A4 Q670 A4
D904 C6 Q706 A7
D905 A6 Q707 A7
D906 A5 Q801 H4
D908 A6 Q802 H4
D909 C6 Q901 B4
Q902 A4
— 25 —
D BOARD WAVEFORMS
1 2 3
1.36V (V)
1.1KV (H) 128.8V (H) p-p
p-p p-p
4 5 6
59.38V (V) 10.81V (H)
p-p p-p
11.19V (H)
p-p
7 8 9
8.25V (H) 13.06V (H) 1.42V (V)
p-p p-p p-p
11 12 13
11.09V (H) 0.05 ~ 0.2V (H) 0.05 ~ 0.7V (V)
p-p p-p p-p
3 7
4 5 6
— 26 —