3-346 IOT-ESS Communication Failure 6
Controller received check code error (parity error in IOT).
Procedure
Switch the power off then on. The problem continues.
Y
N
Return to Service Call Procedures.
Reinstall the software. If the problem continues, check the MCU PWB connectors (P/J Loca-
tions,
Figure
15). DC 3535 only: Replace the VSEL PWB
replace the MCU PWB
(PL
13.1).
Initial issue
DC 3535/2240/1632, WC M24
3-347 IOT-ESS Communication Failure 7
Controller received check code error (framing error in IOT).
Procedure
Switch the power off then on. The problem continues.
Y
Reinstall the software. If the problem continues, check the MCU PWB connectors (P/J Loca-
(PL
13.1). If the problem persists,
tions,
replace the MCU PWB
09/03
2-33
N
Return to Service Call Procedures.
Figure
15). DC 3535 only: Replace the VSEL PWB
(PL
13.1).
(PL
13.1). If the problem persists,
Status Indicator RAPs
3-346, 3-347