TM 5-6675-319-14
Table 9-5. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
.
5.
EXPOSURE LAMP LIGHTS IN TEST AND MANUAL MODES ONLY. PRINTS ARE UNEXPOSED IN
MANUAL AND AUTOMATIC - Cont
Step 6.
Check output of high voltage box.
( a ) I f o u t p u t i s c o r r e c t , p r o c e e d t o s t e p 7 .
(b) If output is not correct, replace high voltage box (paragraph
.
.
Step 7.
Check CRT operation.
( a ) I f o p e r a t i o n i s c o r r e c t , p r o c e e d t o s t e p 8.
(b) If operation is not correct, replace CRT (paragraph 9-20.8).
Step 8.
Check output of PMT.
( a ) I f o u t p u t i s c o r r e c t , p r o c e e d t o s t e p 9 .
(b) If output is incorrect, replace PMT (paragraph 9-20.20).
Step 9.
Check output of -1 kV power supply.
If output is incorrect, replace -1 kV power supply (paragraph
9 - 2 0 . 1 4 ).
6.
SUPPLY RPT ROLLERS FAIL TO MAINTAIN TENSION ON PRINTING MATERIAL.
Check operation of drag brake on supply RPT.
Replace defective drag brake (paragraph 9-20.7).
7.
PRINTER WORKS IN ALL MODES EXCEPT AUTOMATIC. PRINTS ARE OVEREXPOSED IN
AUTOMATIC SWEEP AT LOW RATE.
Step 1.
Check operation of dodging circuits on VDSF-2 printed circuit card.
( a ) I f o p e r a t i o n i s c o r r e c t , p r o c e e d t o s t e p 2 .
( b ) I f i n c o r r e c t , r e p l a c e V D S F - 2 p r i n t e d c i r c u i t c a r d ( p a r a g r a ph
9-20.21).
—
9-116
