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.
Remember that when replacing cards A2, A7, A9, and A20 you
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
Replace power supply PS1 in TD-1337(V)/G
AC or DC Indicator
Replace POWER AC or DC indicator on
A1 thru A22
Replace plug-in card(s) in card file
Remove and install front panel on TD-
Replace display card on front panel
Replace red CESE assembly
Remove and install in rack
Use the following instructions only when directed to do so in
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.