Mtbf / Mttr - Brother HL 5030 - B/W Laser Printer Service Manual

4.

MTBF / MTTR

The meantime between failure (MTBF and the meantime to repair (MTTR) for this printer are
as follows;
MTBF: Up to 4,000 hours
MTTR: Average 30 minutes except the periodical maintenance parts (the Paper Feeding Kit)
and the printer control boards whose MTTR is average 10 minutes.
HL-5030/5040/5050/5070N SERVICE MANUAL
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