TM5-6675-326-14
Table 2-4. Direct/General Support Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. LIGHT GRIDS ARE TOO DIM OR TOO BRIGHT.
Measure light intensity to determine if high and low level potentiometers on card A1 or A2 are out
of adjustment.
Adjust light grid intensity to 2500 footlamberts and 500 footlamberts (para 2-19.1)
2. Z-AXIS MOVEMENT IS SLUGGISH OR HARD TO MOVE
Test for free movement without binding
If movement binds or lugs, adjust and lubricate Z-axis as required (para 2-19.7).
3. LIGHT GRIDS LIGHT BUT INTENSITY WILL NOT CHANGE
Reverse connector to dimmer card.
NOTE
Dimmer card connector is not keyed and maybe reversed. If card is reversed,
grid lamp will operate at maximum intensity, and lamp intensity will not change.
Mark card and connector to indicate proper connection,
Replace dimmer circuit card (para 2-19.8).
2-19 DIRECT/GENERAL SUPPORT MAINTENANCE PROCEDURES.
This section contains step-by-step instructions covering direct/general support maintenance procedures.
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