ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-113
(6)
Connect negative battery cable to battery, and close BATTERY ACCESS door.
4.8.24 Backplane Module A1.
CAUTION
Electronic components containing printed circuit boards are extremely
sensitive to electrostatic discharge (ESD). Wear an ESD wrist strap connected
to ground whenever coming in contact with ESD-sensitive components. Failure
to comply can cause severe damage to equipment.
a. Inspection.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Remove DCS control box top panel, paragraph 4.7.2.
(3)
Remove DCS load sharing synchronizer, paragraph 4.8.21.
(4)
Remove DCS speed control unit, paragraph 4.8.22.
(5)
Remove automatic voltage regulator, paragraph 4.8.23.
(6)
Inspect backplane module (20, Figure 4-15) for damaged or missing connectors and components.
(7)
Install automatic voltage regulator, paragraph 4.8.23.
(8)
Install DCS speed control unit, paragraph 4.8.22.
(9)
Install DCS load sharing synchronizer, paragraph 4.8.21.
(10) Install DCS control box top panel, paragraph 4.7.2.
b. Testing.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Remove DCS control box top panel, paragraph 4.7.2.
(3)
Attach ESD wrist strap and connect to ground.
(4)
Set multimeter to VDC. Connect positive lead to P24-6 and negative lead to P24-7. Refer to
Wiring Diagram FO-3.
(5)
Ensure MASTER CONTROL switch is set to ON. Record VDC reading.
(6)
If reading in step (5) is not approximately 24 VDC, connect positive multimeter lead to P5-R and
negative lead to P5-c. Record VDC reading. Refer to Schematic FO-1.
(7)
If reading is step (6) is 24 VDC, test DCS control box wiring harness, paragraph 4.8.41.
(8)
Start generator set, paragraph 2.11.1.
