TM 5-6675-316-14
Table 3-10. DIRECT\GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. X-AND/OR Y-CARRIAGES WILL NOT MOVE - Cont
Step 2.
Test drive motor for continuity.
(a) If not present, replace motor (paragraph 3-20.5).
(b) If present, replace D100 boards (paragraph 3-20.4).
4.
DRAFTING TABLE UNDERLIGHTING AND/OR VENTILATION FAN(S) WILL NOT OPERATE.
Step 1.
Check ballast for continuity.
(a) If present, proceed to step 2.
(b) If not present, replace ballast (paragraph 3-20.6).
Step 2.
Check ventilation fan motor(s) for continuity.
Replace fan(s) (paragraph 3-20.7).
5. DIGITIZING SYSTEM WILL NOT FUNCTION.
Check +5 V power supply fuse for continuity.
Replace fuse (paragraph 3-20.8).
6.
X-AND/OR Y-COORDINATES NOT INDICATED ON X-Y DISPLAY.
Check ribbon cables, power cords and wiring on drafting table, x-y display,
and digitizing keyboard for continuity.
(a) If present, proceed to (c).
(b) If not present, replace defective cables, power cords or
wiring.
3-140
