
8.2 Communication Errors
Message at the PC What to Do
IQ-400 is not responsive Verify the following:
1. The red DC Power Indicator LED (D2) is ON.
2. Verify that the ID number corresponds to the IQ-400
at the PC. (Check settings of switches at SW1).
3. Check cabling. (RS232/MODEM/RS485/Terminal
Server).
4. Remove the Battery for 5 minutes. Reinsert battery
and restart IQ-400 panel.
8.2.1 LED Fatal Error Display Codes
(Please CALL your PCSC representative.)
E1 ROM error detected- Probable PCB failure.
E2 RAM error detected- Probable PCB failure. Verify that the IC at U108 is seated
properly.
E4 Packet addressing error- IQ-400 failure
E5 Packet queuing error- IQ-400 failure.
E7 Terminal number configuration error- Readdress IQ-400.
ED Database invalid- RESET and configure IQ-400 address
EE Stray jump- Probable IQ-400 PCB failure.
EF Execution of int vector- Probable IQ-400 PCB failure.
Page lxix of 110 IQ-400 Installation Manual 33-10057-001-C
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