TM 5-3610-285-14
Table 7-4. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
DIGITAL DISPLAY DOES NOT CHANGE WHEN CHANNEL CONTROL SWITCH IS ROTATED.
Step 1. Check for defective channel control switch.
(a)
If switch not defective, proceed to step 2.
(b)
If switch defective, replace channel control switch (paragraph
7-20.1).
Step 2. Check for defective display board.
(a)
If display board not defective, notify supervisor.
(b)
If display board defective, replace display board assembly
(paragraph 7-20.5).
6.
FIRST DIGIT OF DIGITAL DISPLAY MAINTAINS A WHOLE NUMBER FOR ALL SAMPLES
TESTED.
Defective photomultiplier board assembly.
Replace photomultiplier board assembly (paragraph 7-20.6).
7-20. MAINTENANCE PROCEDURES.
a. This section contains instructions covering direct/general support mainte-
nance functions for the digital densitometer. Personnel required are listed only if
the task requires more than one.
b. After completing each maintenance procedure, perform operational check to be
sure that equipment is properly functioning.
INDEX
PROCEDURES
PARAGRAPH
Replace Channel Control Switch ......................................................................................
7-20.1
Replace Clock Board Assembly .......................................................................................
7-20.2
7-64
