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The error light and buzzer only work in either the DISPLAY MEMORY or INSERT MEMORY
mode.
The error light does not refer to an error in an operating program. The error light
and buzzer are both turned on and off with the DIF 3 and DIF 2 instructions.
If
the INSERT MEMORY or DISPLAY MEMORY mode is set, the RUN button has been pressed,
and the HALT/DISABLE switch is in the HALT position, the error light turning on will indicate
an error, halt the DATANET-30, and the location of the error will be indicated in the L-register.
This is mainly a maintenance feature.
POWER-ON. SEQUENCE
The power-on sequence is shown below:
1.
Turn on main circuit breaker located behind the front panel of rack 3.
2.
Press AC ON button
3.
Wait 10 seconds, then press DC ON button.
4.
Press MANUAL RESET.
[ID£1J&~~1JCJ ~@------------
IV-3
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