Chapter 1 Troubleshooting
1-93
FIP-DCStep Check Yes No
1
Initial check
Check the following for damage.
Blown fuse in LVPS STD
AC power supply failure
Repair Go to step [2]
2
Checking LVPS STD
Disconnect the connectors J163, J165 and J164 from the
LVPS STD, and turn the AC SW on.
Is P163-1PIN <=> P163-2PIN +24VDC?
Go to step [3] Replace LVPS
STD
3Checking LVPS STD
Is P165-1PIN <=> P165-2PIN +5VDC? Go to step [4] Replace LVPS
STD
4Checking LVPS STD
Is P165-3PIN <=> P165-4PIN +3.3VDC? Go to step [5] Replace LVPS
STD
5
Checking HARNESS ASSY LV RPG
Turn the AC SW off, and connect J164 to the LVPS STD,
then turn the AC SW on.
Is P/J164-1PIN <=> P/J164-2PIN +3.3VDC?
Go to step [6]
Check HARNESS
ASSY LV RPG for
frame short
6
Checking HARNESS ASSY LVNC
Turn the AC SW off, and connect J165 to the LVPS STD,
then turn the AC SW on.
Is P/J165-1PIN <=> P/J165-2PIN +5VDC?
Go to step [7]
Check HARNESS
ASSY LVNC for
frame short
7
Checking HARNESS ASSY 24V
Turn the AC SW off, and connect J163 to the LVPS STD,
then turn the AC SW on.
Is P/J163-1PIN <=> P/J163-2PIN +24VDC?
End of work
Check HARNESS
ASSY 24V for
frame short