What to do if the Front Panel is blank The LEDs of the formatter (visible through the cover) and the power supply can help you troubleshoot a problem when the Front Panel is blank. 1. The following image shows the Power Supply LED, looking through the cover. 2. The following image shows the Formatter LEDs, which are marked I, II and III. ▲ Use the following table to interpret the LEDs and find the source of the problem. Remember that you should read these LEDs when you push the Power button. Some combinations may require the replacement of two or more components. In this case, always replace one component at a time.
Test the printer to see if the problem has disappeared (check the LEDs again). If the same LED sequence continues, replace the next component indicated in the table. Power Supply LED Formatter LED 1 Formatter LED 2 Formatter LED 3 Front Panel Status Solution (part replacement) 1 Off Off Off Off Off Power Electronics Module (Main PCA and PSU) on page 298 2 On Off Off Off Off Main PCA Electronics Module (Main PCA and PSU) on page 298 3 On On Off N/A N/A Formatter Formatter on page 296 4 On On (Flashing) Off Off N/A Hard Disk Hard Disk Drive on page 297 5 On On On (flashing) Off N/A Hard Disk Hard Disk Drive on page 297 6 On On On Off N/A 1. Formatter Formatter on page 296 2.
Main PCA Electronics Module (Main PCA and PSU) on page 298 7 On On On On (flashing) N/A Main PCA Electronics Module (Main PCA and PSU) on page 298 ENWW What to do if the Front Panel is blank 5