IBM 655743N Service Manual - Page 28
User Control
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UPC - 087944378259
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H USER CONTROL (3) Schematic Diagram of H Board Q803 2SC3311A LED DRIVE STBY+5V Q802 2SC3311A LED DRIVE R809 1k R812 330 R811 220 R810 1k D806 SPB-26MVWF POWER R808 5.6k S807 RESET R807 1k S806 ASC R806 1k R805 680 S804 BRT- R804 470 S803 BRT+ C800 47 25V CN801 10P :XA R803 470 S802 OSD R802 330 R801 R800 330 3.3k S801 S800 CONT- CONT+ H 1 LED 0 2 LED 1 3 LED 2 4 LED 3 5 KEY DET 6 STBY+5V 7 GND 8 ENV_TEMP 9 GND 10 GND TO D BOARD CN510 (USER CONTROL) B-SS9036-H.. • H BOARD VOLTAGE LIST Ref. Pin No. Voltage [V] Q802 B 5.1 E 4.4 Q803 B 0 E 0.4 - H BOARD - 1 2 3 4 5 A 5-16
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5-16
H
USER CONTROL
(3)
Schematic Diagram of H Board
— H BOARD —
Ref.
Pin No.
Voltage [V]
Q802
B
5.1
E
4.4
Q803
B
0
E
0.4
•
H
BOARD
VOLTAGE
LIST
1
2
3
4
5
A
STBY+5V
1
2
3
4
5
6
7
8
9
10
S807
S806
S804
S803
S802
S801
S800
R809
R810
R800
R801
R802
R803
R804
R805
R806
R807
R808
R812
C800
D806
CN801
R811
Q803
Q802
47
25V
SPB-26MVWF
3.3k
330
330
470
470
680
1k
1k
5.6k
1k
1k
330
10P
:XA
220
2SC3311A
LED DRIVE
2SC3311A
LED DRIVE
LED 0
LED 1
LED 2
LED 3
KEY DET
H
GND
GND
GND
ENV_TEMP
RESET
ASC
BRT-
BRT+
OSD
CONT-
CONT+
STBY+5V
TO D BOARD
CN510
(USER CONTROL)
POWER
B-SS9036<NH.>-H..