Troubleshooting Signal LED on Interconnect PCA LED on PrintMech PCA Power Switch LED Corrective Action • Check the connection between the PSU and the PrintMech PCA and Interconnect PCA. • If connection OK, check that power reaches the PSU (check the power outlet). • If power reaches PSU, replace the PSU ⇒ See page 379. 5Vsb OFF OFF Amber or no LED 2. If the Printer starts (after having pressed the ON button on the Front Panel) but the front Panel remains black: Signal LED on Interconnect PCA LED on PrintMech PCA Power Switch LED Corrective Action • Check the connection between the PSU and the Interconnect PCA. • If connection OK, replace the Interconnect PCA ⇒ See page 357.
5V OFF ON Blue • Check the connection between the Front Panel and the Intercon- nect PCA. • If connection OK, replace the Interconnect PCA ⇒ See page 384 and the Front Panel ⇒ See page 292. 5V ON ON Blue 3. The Printer is up and running, or may have a System Error at the end of the power-up sequence. For the Carriage PCA connection, perform the Scan-Axis Test ⇒ See page 97: Signal LED on Interconnect PCA LED on PrintMech PCA Power Switch LED Corrective Action • Check the connection between the PSU and the Interconnect PCA. • If connection OK, replace the Interconnect PCA ⇒ See page 357.
5V OFF ON Blue • Check the System Error that is produced and run the corre- sponding Diagnostic Test (either Scan-Axis or Media-Axis Test. 24V ON ON Blue and Green • Check the connection between the PSU and the PrintMech PCA and Interconnect PCA. • If connection OK, run the Elec- tronics Module Test to further diagnose the problem. 24V OFF OFF Blue and Green 18 Chapter 1 Troubleshooting