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 SB 740-91-01
Step
Settings and Instructions
Normal Indication
3
Chassis Ground Continuity
(a)
Connect multimeter between
indicated points and observe
resistance values.
From
To
(1)
31-B
Chassis Gnd
1 ohm, Max
Strap
(2)
J2-A
Chassis Gnd
1 ohm, Max
Strap
(3)
J3-2
Chassis Gnd
1 ohm, Max
Strap
(4)
J5-C
Chassis Gnd
1 ohm, Max
Strap
(5)
J6-C
Chassis Gnd
1 ohm, Max
Strap
(6)
J6-M
Chassis Gnd
1 ohm, Max
Strap
4
Battery Power Continuity
(a)
Connect multimeter between
indicated points and observe
resistance values.
From
To
(1)
J8-2
J8-4
1 ohm, Max
(2)
J8-3
J6-S
1 ohm, Max
(3)
J9-2
J9-4
1 ohm, Max
(4)
J9-3
J6-S
1 ohm, Max
5
Ground Isolation Test
(a)
Connect positive and negative
leads of megometer as
indicated below.
(b)
Using megometer, observe
impedance between indicated
points
B(+)
(-)
(1)
J6-F
J6-H
(2)
J6-S
J6-H
(3)
J8-65
J9-2
(4)
J8-5
J8-3
(5)
38-5
J9-2
(6)
J9-5
J8-3
(c)
Disconnect megohmeter
Change 1 B-130.30
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