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Service Guide ML590/ML591
Chapter 1 Product Specifications
1.11 RELIABILITY
1.11.01 Mean Time Before Failure (MTBF)
Approximately 6,000 hours: 25% duty cycle / 35% page density
1.11.02 Mean Time To Repair (MTTR)
Approximately 15 minutes to major sub-assembly level
1.11.03 Printer Life
Approximately 16,000 hours of power-on time: 25% duty cycle / 35% page density
1.11.04 Printhead Life
Average 200 million characters in 10 cpi utility mode @ normal 25% duty, 35% page
density
1.11.05 Ribbon Life
Black: Approximately 4 million characters
Color:
Black: Approximately 1.5 million characters
Cyan: Approximately 1.5 million characters
Magenta: Approximately 1.5 million characters
Yellow: Approximately 0.8 million characters
1.11.06 Warranty (Limited)
Two years, parts and labor
1.11.07 Service
Authorized Okidata Service Centers
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)