HP Color LaserJet 8500 Service Manual - Page 489
Standalone diagnostic tool, To set the device in service mode, To exit service mode
View all HP Color LaserJet 8500 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 489 highlights
Note Note EN Standalone diagnostic tool The standalone diagnostic routines differ between the 3,000-sheet stapler/stacker and the 3,000-sheet stacker. The standalone diagnostic tool tests the device's motors and functionality without the C-link commands from the printer. The device has a user LED and a set of service LEDs. User LED-the single LED located at the top of the front cover provides information about the power-on status and attachment/ alignment to the printer. Service LEDs (see figure 203 on page 353, callout 3)-three LEDs (green, yellow, and red) located near the bottom of the controller PCA, toward the back of the device, provide additional technical information about the device. To interpret the LED patterns, see the tables later in this chapter. When service mode is entered, the stapler/stacker performs a powerup sequence. While in service mode, the stapler test/stacker test, stacker bin test, face-up bin full sensor test, and stacker bin full test can be performed. To set the device in service mode Make sure the printer is turned off before performing this test. If the printer is on when service mode is enabled, some C-link signals might affect the test performance. 1 Unplug the C-link cable that connects the device to the printer. 2 Unplug the power cable that connects the device to the printer and plug the power cable directly into a grounded power source. 3 Remove the controller PCA cover (see page 342 for removal and replacement procedures). 4 Slide the service mode switch on the controller PCA to the "ON" position (toward you). 5 Press and hold in the interlock switch. To exit service mode 1 Release the interlock switch and slide the service mode switch on the controller PCA back to the normal position. 2 Reinstall the controller PCA cover and C-link and power cables. 3,000-sheet stapler/stacker troubleshooting 487