switches.
BANK 1: Self-tests and RS-232 pinout indicators
Switch 1: Spare
Switch 2: RS-232 Pinout (Pin 2 voltage indicator)
Switch 3: RS-232 Pinout (Pin 3 voltage indicator)
Switch 4: Non-Volatile Memory Failure
Switch 5: ROM Checksum Failure
Switch 6: RAM Read/Write Failure
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