Table 7-3. Power On Defects or Blank Display (continued) Problem Action YES If the fans are working but the printer's Control Panel is blank, print an engine test. See “Engine Test” on page 390. If the engine test was successful, perform the following steps: 1. Reseat or replace the cable from the Control Panel that is connected to J203 of the DC Controller PCA (see the main wiring diagram in the back of the manual). 2. Replace the printer's Formatter PCA. See “Formatter Assembly” on page 196 for instructions. 3. Replace the Control Panel assembly. See “Control Panel” on page 163 for instructions. If the engine test was not successful, verify that there is no paper in the paper path.
Retry the engine test. If the engine test is still unsuccessful, replace the DC Controller PCA. See “PCA, DC Controller” on page 207 for instructions. 388 Chapter 7 Troubleshooting C4085-91087