HP 7901A Operating And Service Manual page 62

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0008) Replaceable Parts
Mfr
Mfr Part Number
Code
28480
07901-60008
56289
41C 92Al o-COH
56289
41C92AIo-CDH
MW
28480
1902-0025
MW
284BO
1902-0025
28480
0490-0373
02735
40526
86684
40430
Oll21
EB 6915
01121
EB 1015
28460
0812-0060
01121
fB 1025
01121
EB 1025
U
R3
N
a:
Jl
Location Diagram
Maintenance
FROM
LOGIC
GROUND
TERMINAL
BOARD
DR'Vc'~OTOR
CHASSIS
MDUNT~ ~~
["TOR CONTROL
".?!!~.
SERlESI''''
A3Pl
2+-~J~1
________________ - ' ______
-1~
__________________________________
~
Bl
CARD CAGE
FAN MOTOR
FROM TBl-7
Fl
6A, 250 VAC
FROM TBl-2
FROM A5J3-7,H
FROM A5J3-17,U
f
DWG REV A
117VAC
'------'------' 5
+--I-_l_l_7_V_A~Ct-N_E
U_T_R_A_L ____
-+ ______
- t ______ ~.._----._--------------------~
3
>--'---lL-~11...;,.7_V_A...;,.C...;,.N:.::E..:.U..;,.TR...;,.A..;.:L=__
__ _{
I
I
I I
4
I
I
1
I I
I
I
I I
<ill>
A3P3 ( 1
J3
I
I
I I
I
I
@
(2
_---.J
117VAC
ENERGIZE MOTOR RELAY
+5VDC
C2
0.1
R5
1000
R3
5000
R2
1(lO
CRl
10V
CR2
10V
Kl
MOTOR RELAY
FROM
LOGIC GROUND
TERMINAL BOARD
LOGIC GROUND
Figure 5-20. Motor Control PC Assembly A3,
Schematic Diagram
5-23

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