Braun RA500 service manual Troubleshooting Diagnosis Chart

TROUBLESHOOTING

Troubleshooting Diagnosis Chart

WARNING

Troubleshooting and repair procedures must be performed as specified by an authorized service technician only. Failure to do so may result in serious bodily injury and/or property damage.

If a problem occurs with your ramp, discontinue operation immediately! Contact your sales representative or call The Braun Corporation at 1-800-THE LIFT®. One of our national Product Sup- port representatives will direct you to an authorized service techni- cian who will inspect your ramp.

The cause of the problem can be determined by locating the lift function and related symptom in the Troubleshooting Diagnosis

Chart. The specific cause and remedy can then be determined by process of elimination. A Wiring Diagram and Electrical Schematic are provided to aid in troubleshooting.

A Repair Parts section with an exploded view and corresponding parts list is also provided. Correct the problem if possible. If the problem continues, contact The Braun Corporation.

FUNCTION	SYMPTOM		POSSIBLE CAUSE	REMEDY
		1.11	Battery terminals dirty	Clean and tighten
		1.12	Bad chassis ground	Clean and tighten. See Chassis Ground
				Corrosion on page 28.
	1.10	1.13	Battery defective	Replace
		1.14	Battery discharged	Charge battery
	No Power	1.15	25 ampere in-line fuse faulty	Replace controller fuse or vehicle fuse
	To Controller	1.16	Power cable	Check for loose terminals or broken wire
		1.17	Vehicle Interlock(s) circuit incomplete	Correct or replace
		1.18	Vehicle-to-controller power harness	Disconnect harness from controller.
				Using volt meter test for proper voltage:
1.00				Pin 1 = + 12/24 V
NO				Pin 2 = - Ground
OPERATION
		1.21	Ramp to controller wiring harness	Check harness for loose or broken
		1.22	Vehicle to controller data harness	connections.
	1.20			Check harness for loose or broken
	Power to	1.23	Faulty Controller	connections.
	Controller But			See Controller Diagnostic Guide
	No Function	1.24	Ramp enable circuit incomplete	Correct or replace
		1.25	Parking brake interlock inactive	Correct or replace
		1.26	Manual release disengaged	Check that manual release is re-engaged

Page 38