HP 8000dn Service Manual - Page 357

Table 7-2. Power On (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 335. 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 185 for instructions. 3. Replace the Control Panel assembly. See "Control Panel" on page 159 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 197 for instructions. EN Power On 333