_ DEC-O-LOG for TK50
_ DOL, TK50-R001, TK50 Tape Cartridges OCT 85

IN-PLANT EFFECTIVITY: AUG 85

FIELD EFFECTIVITY: Replace all TK50 Tape Cartridges (P/N 30-20515-01) 
between Serial Numbers xxx17 xxxx to xxx30 xxxx without a "B" stamped 
on the bottom.  These are DEFECTIVE Cartridges.  All Tape Cartridges 
(P/N 30-20515-01) between Serial Numbers xxx17 xxxx to xxx30 xxxx with 
a "B" rework stamped on the bottom, and the Cartridges outside the 
range xxx17 xxxx to xxx30 xxxx are not defective.

PROBLEM: The Cartridge leader leaves debris on the read/write head, 
which results in data errors.
 
QUICK CHECK: If this FCO has been installed, all new Cartridges will 
have a black leader.


The DEC on-site labor charge will be the time required to install and test
the FCO at the then current hourly rate.

FCO KIT ORDERING:
EQ-01372-01: FCO, PARTS
FA-04655-01: FCO only


_ DOL, TK50-I002, TAPE DRIVE JUL 87

PROBLEM: Intermittent load/unload problems; drive hangs
due to operator errors; inability to recover from
operator induced failures. 

FIELD EFFECTIVITY: All TK50 Tape Drives below Revision E1. Drive
Revision is on a label attached to the rear of the drive. 

QUICK CHECK: Installed drive is Revision E1 or above. 


FCO KIT ORDERING:
EQ-01475-01  FCO, PARTS
FA-04764-01  FCO only


