HP Designjet 4000 Service Manual - Page 16

Troubleshooting Using the Power-up Sequence to Troubleshoot When the Printer is powered up, it performs the Boot-UP sequence which initializes the major components of the Printer. If for some reason the BootUp sequence fails because a components has failed to initialize, the following explanations will help you to locate the failing component: 1-10 Step Initialization Process BULNEX KERNEL BOOT 30 rc.sysinit rerun through initlog. „ Environmental variables PATH, NETWORKING, HOSTNAME set. 29 „ Source /etc/init.d functions. „ Fix console loglevel. „ Mount /proc. 28 „ Dismount the initrd, if necessary. „ Configure kernel parameters. 27 Set the system clock. 26 Load keymap. 25 Load system font. 24 Start up swapping. „ Set the hostname. 23 „ Initialize USB controller and HID devices „ Set variables for options to be later used for filesystem check 22 „ Turn Off DMA on CD-ROMs „ Turn On Hard Disk optimization 21 Perform file system check on root volume. 20 Update quotas if fsck was run on root 19 Setup pnp hp designjet 4000 series printer service manual