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9840 Troubleshooting and Recovery
9840 Tape Drive Operations Guide—429596-002
A-2
UnWr xxxx Indication
•
An unused bit in the RAM or EEPROM has become bad.
•
There might be a problem with the ASIA interface.
3. To isolate one of the two possibilities:
a. Save the configuration again. Because the configuration is already apparently
correct, re-saving the configuration generates and stores a new checksum.
If an unused bit of the RAM has become bad, it is now included in the ASIA
checksum and will not show up again as an error.
b. IPL the tape drive.
c. If the error is not repeated, it is indicated that an unused bit in the RAM is bad.
This problem can now be disregarded. Go to Step 5.
d. If the problem is repeated and the configuration remains correct, there may be
a problem with an unused bit in the EEPROM or the checksum circuit.
4. If the client and tape drive configurations do not match, there are two possibilities:
a. A damaged used are of the RAM.
b. A damaged used area of the EEPROM.
Reconfigure the tape drive and save the new configuration.
1. If a used area of the RAM is bad, the save operation will fail, causing a
“Save Fails” error. In that case the “Fix_CfgErr” was caused by a bad RAM.
Contact your service provider to replace the tape drive.
2. If the save operation succeeds, the EEPROM is probably bad. The new
configuration is properly saved only to the RAM: The EEPROM may have
corrupt data.
5. If applicable, place the tape drive back online.
6. If the configuration problem repeats on the next IPL, it means that the EEPROM is
damaged. Contact your service provider to replace the tape drive.
UnWr xxxx Indication
Cause. “UnWr xxxx” means unwritten data. This display occurs if the Unload switch
was pressed during a write operation. It indicates that the tape drive attempted to write
the remaining data before it unloaded, but the attempt failed.
Note. When the configuration in the RAM is correct, the tape drive can usually operate
normally while it remains powered on, even it the EEPROM or checksum circuit in the
ASIA are damaged.
Note. When the configuration in the RAM is correct, the tape drive can usually
operate normally while it remains powered on, even if the EEPROM is damaged.