TM 11-7025-221-20
2-9. TD-1337(V)/G Troubleshooting - Continued.
c. Replacement Procedures. When the flowchart directs you to replace an item, replace it by using
the instructions for the item as listed in the below chart.
q q CAUTION qq
Cooling air flow through TD-1337(V)/G is interrupted when TD-1337(V) is ex-
tended out of rack. Remove top cover and limit operating time to one hour
when cooling air is not being applied to TD-1337(V)/G. Otherwise, excessive
heating condition may occur and cause damage to electrical components.
NOTES
Remember that when replacing cards A2, A7, A9, and A20 you
q
must check for certain jumper plugs being installed,
q Remember that when replacing card A9 it may be necessary to
re-enter system configuration data.
Replacement Procedures References
Remarks
Para No.
Item
PS1
Replace power supply PS1 in TD-1337(V)/G
2-20
AC or DC Indicator
2-19
Replace POWER AC or DC indicator on
front panel
A1 thru A22
2-18
Replace plug-in card(s) in card file
A23
2-21
Remove and install front panel on TD-
1337(V)/G
A23A1
2-22
Replace display card on front panel
A23A2
2-23
Replace keyboard on front panel
A25
2-24
Replace red CESE assembly
TD-1337(V)/G
Remove and install in rack
2-16
NOTE
Use the following instructions only when directed to do so in
flowchart.
d. flowchart Supplementary Troubleshooting. Certain faults can inhibit processing and display operations
which, in turn, affect diagnostic presentations. Typically, these conditions will light the ALARMS PROCESSOR
indicator; or all ALARMS indicators are off and the display cannot be activated. When these conditions exist, and
replacement of the assemblies associated with the ALARMS PROCESSOR LIT or DISPLAY/KEYBOARD PROBLEM
actions do not correct the problem, you are directed to this subparagraph. At this time, perform the ALARM BUS
troubleshooting procedures in paragraph 2-13. These procedures will enable you to find the faulty assembly and
correct the problem. When using the procedures in paragraph 2-13, it is not necessary that you replace those
assemblies that you have already replaced prior to being directed to this paragraph by the flowchart.
2-13
