Specifications

SQ: 5-51
RS3: Service Quick Reference Guide
Consoles
Printer Interface Card --0003, --0004 (with RS-422 interface) LEDs
LED
Meaning
DS1 Card good. No faults are detected on the card.
DS2 Card fault. A fault has been detected in the communication link.
DS6 TXD A. Indicates data being transmitted to the keyboard.
DS7
CTS A. Clear To Send. Keyboard is connected and ready to accept
data.
DS8 TXD B. Indicates data being transmitted to the printer.
DS9 CTS B. Clear To Send. Printer is connected and ready to accept data.
DS10 NV Write. The nonvolatile RAM i s being written.
DS11 Clock. A one-second pulse that the RTC is running.
DS12 Software Clock. The internal software clock of the console is running.
Printer Interface Jumpers
Jumper
Position Function
HD10 1--2
Clock battery connected
(Operating position)
2--3
Clock battery disconnected
(Storage position)
HD1--HD6 M
Configured as Modem
(Normal position)
HD7--HD9 N
Test disabled
(Normal position)