Installation guide

Controller Board Start-up
Manual No. 775020 3-9
In Case of Problems
If problems are encountered during start-up, check the following:
• Check SCSI cabling for loose connections, pin mismatches (make sure
pin 1 on the cable matches pin 1 on the connector), bent pins, and
damaged or crossed cables.
• Check cable length. This includes internal bus lengths in enclosures.
• Check termination.
• Check SCSI IDs on all drives.
• Remove the system cover, power ON the system and observe the LEDs
(see Figure 3-1).
• Be sure the U1 light goes out after system is booted.
• Be sure the SE or LVD is lighted appropriately, see the table excerpt
following Figure 3-1 on the next page.