Description: Abnormal detection in the service linkage application processing section The communication at the service linkage application processing section in the main PWB is faulty.
Remedy: 1 Resetting the power The main PWB does not operate properly. Turn off the power switch and pull out the power plug. After passing 5s,reinsert the power plug and turn on the power switch. 2 Firmware upgrade The firmware is not the latest version. Upgrade the main firmware to the latest version. 3 Executing U021 The backup RAM data is faulty. Execute U021 to initialize the backup RAM data. 4 Replacing the main PWB The main PWB is faulty. Replace the main PWB.