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09/03

2-33

DC 3535/2240/1632, WC M24

3-346, 3-347

Status Indicator RAPs

Initial issue

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.

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 (PL 13.1). If the problem persists,

replace the MCU PWB (PL 13.1).

3-347 IOT-ESS Communication Failure 7

Controller received check code error (framing error in IOT).