Mitsubishi FB13PNT, Quick Start Manual

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2-34 2-34
502822 502822
(14) Repair or replace harness (14) Repair or replace harness
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
(18) Replace traction motor (18) Replace traction motor (17) Follow the traction inverter testing procedure (17) Follow the traction inverter testing procedure
Normal Abnormal Normal Abnormal
Without service tool Without service tool
With service tool With service tool
(20) Replace traction inverter (20) Replace traction inverter (19) Remove DSP cover of traction inverter and check DSP (19) Remove DSP cover of traction inverter and check DSP
flat cable for looseness or wire breakage flat cable for looseness or wire breakage
Normal Abnormal Normal Abnormal
(22) Secure DSP flat cable if loose (22) Secure DSP flat cable if loose
Replace traction inverter if wire breaks Replace traction inverter if wire breaks
(21) Replace DSP card of traction inverter (21) Replace DSP card of traction inverter
All powe All powe r cables r cables conne conne ct and turning on powe ct and turning on powe r r
If fault (25) remains If fault (25) remains
(23) Perform inverter discharging work (23) Perform inverter discharging work
(25) Perform inverter discharging work (25) Perform inverter discharging work
(26) Replace the traction inverter ASSY with the original (26) Replace the traction inverter ASSY with the original
inverter ASSY again, then replace the traction motor inverter ASSY again, then replace the traction motor
Please keep the inverter ASSY which is used for Please keep the inverter ASSY which is used for
inspection at step (24) because the ASSY is normal inspection at step (24) because the ASSY is normal
(24) Replace the DSP card with t (24) Replace the DSP card with t he original he original card again card again , ,
then replace the traction inverter then replace the traction inverter
Please keep the DSP card which is used for inspection Please keep the DSP card which is used for inspection
at step (21) because the card is normal at step (21) because the card is normal
If fault (25) remains If fault (25) remains
(16) Driving and reading (16) Driving and reading
 
Motor speed feedback Motor speed feedback
 
of of
output monitor output monitor
Check the value of speed is smooth and not erratic Check the value of speed is smooth and not erratic
feedback feedback
Smooth Smooth Rough Rough or or erratic erratic
(15) Driving and check the jerky and change directions at (15) Driving and check the jerky and change directions at
very low speed very low speed
Normal Abnormal Normal Abnormal
(13) C (13) C onnec onnec t t all conne all conne ctors ctors , , battery plug a battery plug a nd turning on nd turning on
power power
Raise wheels off floor Raise wheels off floor