What is error meassage 0550H

1 ANSWERS

1. Guest7911
   

   Error code 0550h explains Read timeout. You need to check the SCSI device.
   Check the selected SCSI device is connected and configured correctly.
   If error persists, replace SCSI device.
   For further detail visit: bizsupport.austin.hp.com/bc/docs/support/SupportManual/bpv04997/bpv04997.pdf
   
   As the SCSI interface has developed from the original 50 pin connection to 68 and even 80 pins, so has the speed and complexity of the devices that now connect to the bus. Connecting any SCSI device, let alone ‘wide’ devices to ‘narrow’ buses and vice-versa requires thorough understanding of SCSI terminology, termination practices, terminators and adapters, and drive specific requirements.
   Internal: some SCSI drives (pre-LVD) had passive terminators installed in the drive, and could
   be enabled/disabled by setting a jumper or inserted/removed from a socket. Drives with
   LVD interface do not have internal termination due to reduce bus loading, and the fact that in a multi-drive
   environment, only one drive needs to be terminated.
   External:
   In-line (also called ‘feed-through’) terminators connect in series with a SCSI device.
   Close-ended terminators plug into a bus connector or may be crimped on the cable.
   Passive: resistor networks driven directly by the term power on the bus.
   Active: resistor networks driven by voltage regulators inside the terminator. All LVD
   terminators can be assumed to be ‘active’.
   Information  are only given to make you familiar with SCSI device .It is better for you to not indulge in these sophisticating terms and replace your fax machine SCSI device.
   

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