m The contents of errors displayed when TEST switch S701 is set to �0� are described below. �i E� Input signal error This error occurs when a 4:2:2 component serial digital video signal cannot be detected by IC202 and IC206. �o E� Output signal error This error occurs when a correct signal is not input to IC301. �Pd1� Power 1 error This error occurs when the 3.3 V power supplied to IC601 and IC603 is detected to be abnormal. �Pd2� Power 2 error This error occurs when the 3.3 V power supplied to IC305 is detected to be abnormal. �LAE� Volume A/D error This error occurs when the data from IC103 that converts the values of RV101 to RV104 used in the LOCAL mode into analog to digital is detected to be abnormal. �CoE� Communication error with S-BUS (PN) CPU inside board During serial communication between the main CPU and S-BUS (PN) CPU, this error occurs when the S-BUS (PN) CPU does not return any data within a given time to the data request from the main CPU. �ntE� S-BUS (PN) network error This error occurs when the S-BUS (PN) CPU cannot detect an S-BUS (PN) control signal. �PCE� S-BUS (PN) polling error This error occurs when the S-BUS (PN) CPU is not polled from an S-BUS (PN) control signal for more than a given time.