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(O)
Check that the module is properly installed
(con-
nector firrnly mated, etc.)
and replace the two retaining
screws
(2)
Patching Block Replacement
(a)
The ?atching blocks of the computing components are
held securely in place by the retaining
screws on the
rear of the ?re-?atch Panel (figure
2.2-7)
(n)
The retaining
screws are located on both ends of the
patching bl-ock.
Release thern with a scrernl driver'
(")
once the retaining
s+,rip is free,
remove the original
b l o c k a n d r e p l a c e i t w i t h t h e n e w b l o c k . R e p l a c e t h e t . w o
retaini-ng screlds. The ?re-Panel is now ready for problem
patching.
3.
MONITORING AND CO}XIROL
The control
system of the HII'AOHI 5O5 is designed to al1ow
simple control
and monitori-ng of the conputer components (Figure
2.3-I).
The following
sub-paragraph descri-bes the fr-rnction and
operati-on of the various monitoring
and control
facilities
of the
4 0 6
a.
Output Selector
SL-25I
T h e o u t p u t s e l e c t o r n a i n l y c o n s i s t s o f t w o r o w s o f p u s h -
buttons; The first
row contains 4 buttons designated A0 through
1
A3, and the second row contains I0 buttons designated 0
through
g . D e p r e s s i n g t h e . q . o n . , t t o , . p e m i t s t h e o p e r a t o r t o s e l e c t t h e
outputs of the 10 operational
anplifiers
(l0O through A09).
In
t h e s a m e w a y r d e p r e s s i n g t h e C ? b u t t o n i n t h e f i r s t r o w p e r : n i t s
- 2 7 -
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