S e r v i c e N o t e s
The 5233 and 5234 utilize integrated circuitry. Proper opera-
tion can be verified by measurement of DC output voltages
for each integrated circuit which should measure 0, ±
1
/
2
V DC.
If this specification is not met, the integrated circuit is defec-
tive and should be replaced.
DC voltages are measured with respect to g r o u n d . It should
be noted that a DC voltmeter having a high input impedance
(10 M n or greater] is recommended.
Circuit layout has been designed to facilitate servicing. All
components are accessible and easily replaced. Parts not
normally available through supply houses can be ordered
from a J B L Professional Products dealer or from:
J B L Customer Service
8500 Balboa Boulevard
Northridge, California 91329
P O W E R
8
F i g u r e
7. Power Input-5231 and 5232.
P o w e r s w i t c h a n d p i l o t l i g h t c o n f i g u r a t i o n s f o r t h e 5 2 3 1 a n d 5 2 3 2
d i f f e r s l i g h t l y f r o m t h e 5 2 3 3 a n d 5 2 3 4 . F o r 2 2 0 - V o p e r a t i o n r e m o v e
t h e j u m p e r s b e t w e e n t e r m i n a l s 1 a n d 2 , a n d t e r m i n a l s 3 a n d 4 o f
T B 4 0 1 , t h e n c o n n e c t a j u m p e r b e t w e e n t e r m i n a l s 2 a n d 3.
