HP LaserJet II Serie Manual De Instrucciones página 75

HP 33440/HP 33449 COMBINED SERVICE MANUAL
4"?. INTRODUCTION
Very litie routine operator maintenance is required for HP 33440 and HP 33449 printers. Most
maintenance and adjustment procedures are carried out only when the EP-S Cartridge is changed
or there is a print quality or paper feed problem. Since the maintainable parts of both printers are
similar, the HP 33440 has generally been used for illustration.
Note
Ml routine maintenance and adjustments are the customer's responsibility. Most
of the following procedures are included for reference only.
4-2. LIFE EXPECTANCY OF CONSUMABLES AND RELATED PARTS
The expected service live of consumables and related parts is given in Table 4-1. Nways inspect
these components for wear when servicing the printer. The expected-service-life estimates are
based on A4 or letter size prints with an average of 5 percent toner coverage at a density dial
setting of "7". The control panel self test printout produces approximately a
12
percent coverage
for the HP 33440, 10 percent for the HP 33449.
Table 4-1. Service Life of Consumables
—
EP-S Cartridge*
1
Cleaner Pad* 1
Separation Pad
I 1
Approximately 4000 pages
(application dependent).
Open: 6-me. shelf life.
Unopened: 2-yr. shelf life.
Life of EP-S Cartridge.
RocMng the cartridge when
TONERLOW
appears may
prolong catiridge life.
Included with EP-S
Cartridge.
100, OOO**
100,OOO** or anytime the
Separation Pad is replaced.
100,OOO** or anfiime Feed
Roller Assembly is replaced.
50,000**
100,OOO**
*Customer responsibility. **Estimated, see note below.
***HP responsibility on early HP 33440s.
Note
The 100,000-page component service life is ONLY AN ESTIMATE. The service
Pi
life of consumables is directiy related to the type of media used and the type of
@
printing being done. The Fusing Assembly, Feed Roller Assembly, Separation
Pad, and Transfer Corona Assembly should be inspected for excessive wear and
replaced if necessag whenever a printer is being serviced.
4-3