
MEP 660 - Trouble shooting Manual
Doc No.: IM – 51
Rev.2.0
Print: October 2008
3
Precautions to be followed while troubleshooting:
Where ever locomotive has been asked to move or open first notch with GF
ON, extreme care should be taken that brakes are applied physically on the
wheels and brake system is working normal as per Rail Road instructions.
Wherever user has been asked to replace the card or cable, Switch off all
breakers, replace the card/cable and switch ON the breakers and then continue
the test. Removal of card or cable with supply can damage the respective card /
module.
Use proper tools like spanners / nut drivers etc to remove / replace defective
components. Do not try with un-sized tools.
While reconnecting wires / cables ensure proper cable tags are available and
they are connected correctly to the correct terminals. If cable tags are missing,
disconnect cables / wires checkup continuity, re-tag the wires and connect.
Wrong connection of any wire / cable can lead into further complicated trouble.