U.S. Department of Defense Test Sets Electron Tube TV-2A/U User Manual

Item

M a i n t e n a n c e p r o c e d u r e s

See that the electron tube shields for V2 and V3 are firmly in

position and secure. See that the electron tube retainer for V1
is clamped tight.

Inspect fixed capacitors on the underside of the tube tester chassis

for leaks, bulges, and discoloration.

B e f o r e o p e r a t i n g t h e e q u i p m e n t , i n s p e c t i t . I n s p e c t i o n w i l l s a v e

r e p a i r t i m e a n d m a y a l s o a v o i d f u r t h e r d a m a g e . I n s p e c t t h e f o l -

l o w i n g f o r o b v i o u s d e f e c t s :

a. T h e s e a t i n g o f a l l t u b e s i n t h e i r s o c k e t s .

b. W i r i n g c o n n e c t i o n s o n t h e t e r m i n a l b o a r d .

c. W i r i n g c o n n e c t i o n s t o t h e s w i t c h e s a n d m e t e r s o n t h e f r o n t

p a n e l .

a . G e n e r a l . T h e e q u i p m e n t p e r f o r m a n c e c h e c k l i s t p r o v i d e s a

p r o c e d u r e f o r s y s t e m a t i c a l l y c h e c k i n g e q u i p m e n t p e r f o r m a n c e .

A l l c o r r e c t i v e m e a s u r e s t h a t t h e s e c o n d e c h e l o n r e p a i r m a n c a n

perform are given in the C o r r e c t i v e m e a s u r e c o l u m n . W h e n u s i n g

t h e c h e c k l i s t , s t a r t a t t h e b e g i n n i n g a n d f o l l o w e a c h s t e p i n o r d e r .

I f t h e c o r r e c t i v e m e a s u r e s i n d i c a t e d d o n o t f i x t h e e q u i p m e n t ,

troubleshooting is required by higher echelon. Note on the repair

t a g h o w t h e e q u i p m e n t p e r f o r m e d a n d t h e c o r r e c t i v e m e a s u r e s

t h a t w e r e t a k e n .

b . P r o c e d u r e . P l a c e t h e t u b e t e s t e r i n o p e r a t i o n a s s h o w n i n

the checklist in c b e l o w .