HP 20-Feb manual 1AH, See Troubleshooting Common Problems on, 1BH, 1CH, 1DH

Table 46		Error Codes and Recovery Procedures
Decimal	Hex	Description	Recovery Method
Error	Error
21	15H	A chassis fan is	Check that the chassis fan cable connection is
		disconnected or	secure.
		faulty.
22	16H	Chassis interconnect	Check that the chassis interconnect cables are
		cables are	secure.
		disconnected or
		faulty.
23	17H	Front panel cable is	Check that the front panel cable connections are
		disconnected or	secure.
		faulty.
24	18H	Transport bar code	Power cycle the library.
		reader failed self test.
25	19H	Library levels	■ Check for obstructions in the vertical path.
		measured does not	■ Check that the chassis interconnect cable
		match the number of
			connection is secure.
		levels detected.
26	1AH	Upper level fan cable	See Troubleshooting Common Problems on
		failed.	page 140 for troubleshooting procedures.
27	1BH	Transport controller	Replace the transport assembly.
		unable to
		communicate with
		transport.
28	1CH	Transport controller	Update the library’s firmware (see Upgrading
		needs new firmware.	Firmware on page 176).
29	1DH	Failed transport	Update the transport’s firmware (see Upgrading
		firmware download.	Firmware on page 176).
50	32H	Test not run, an	If incorrect test number was designated when
		invalid test number	initiating a test over the SCSI interface, select
		was specified.	desired number and then re-initiate the test.

212 Library Error Codes Appendix