A5 Keyboard & A7 Lower Keyboard Assembly-Level Troubleshooting; Annunciators - HP 8340B Manual

A5 Keyboard and
A7 Lower Keyboard
Assembly-Level Troubleshooting
ANNUNCIATORS
1.
If
one of the front panel LEDs stays
on
all the time, the trouble is
the A6 annunciator latches.
2.
If
one of the front panel LEDs never comes
on,
even when [INSTR PRESET]
is
pressed, the cause
is
most likely
a
bad LED.
G-10
A5
Keyboard
&
A7
Lower Keyboard Assembly-Level Troubleshooting
HP 8340B/41B