
MEP 660 - Trouble shooting Manual
Doc No.: IM – 51
Rev.2.0
Print: October 2008
2
LEDs is that both LEDs of same number should toggle their status either ON or OFF
simultaneously. The matrix of these LEDs is given as
Annexure-4
for reference
indicating which LED represents to what digital input. These LEDs are addressed by their
Numbers printed on the front fascia by side of the LED and corresponding slot on the
base in which the card is available.
The various digital inputs and digital outputs with their connections between locomotive
and the control unit having their corresponding cable IDs and pin numbers are given as
Annexure-5
. This data is extracted from the Electrical schemnatics for MEP 660 system.
Doc. No. ED-1000.
The menu system and the display parameters are extensively referred in this manual to
identify the fault. Various menu and submenu options available and the displayed
parametes in each group are given as
Annexure-6
for easy reference to navigate
through Display menu.