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115
RT20
6
User
G
u
ide
Problem: Illumination and aiming beams are OFF.
Solution:
1. Verify that the engine is properly powered up.
2. Send
“
?
”
to the engine. If the engine returns a reply of
“
!
”
, then send programming commands to turn
on illumination and aimer.
Problem: Carriage Return/Line Feed settings.
Solution:
See the
“
Terminating Character Suffix
”
section in Chapter 7.