HP C8088B, Service Manual

Page: 66 / 300

64 Theory of operation ENWW
Stapler/stacker bin full condition
The stapler bin signals a “full” condition when either of these conditions exist:
●
Approximately 3,000 sheets of letter/A4 have been collected in the stapler bin
●
Approximately 1,500 sheets of ledger/A3 have been collected in the stapler bin
Note A full-bin condition is signaled when the stapler bin contains 15 kg (33 lb) of paper.
Full bin—Optical sensors detect the presence of paper and the full-ministack condition. The
stapler bin accepts paper until a full-ministack condition (up to 70 sheets of paper) is detected.
The stapler bin then receives a signal to descend and then continue accepting paper. This cycle
is repeated several times, until the stapler bin activates the full-bin microswitch that is located at
the bottom of the unit. This microswitch indicates a full-bin condition when using letter/A4 or
equivalent paper.
Overload—Optical sensors detect the presence of paper and the full-ministack condition. The
stapler bin accepts paper until a full-ministack condition (up to 70 sheets of paper) is detected.
The stapler bin then receives a signal to descend and then continue accepting paper. When
using ledger/A3 or equivalent paper, the overload microswitch is activated when the full-bin
condition exists and the weight of the paper stack reaches 15 kg (33 lb).
Figure 29. Stapler-bin-full condition
Full-ministack sensor
Presence-of-
Stapler-bin-movement
route for 1,500 sheets
Stapler bin
Stapler-bin-movement
route for 3,000 sheets
Bin-full
Bin-overload
microswitch
paper sensor
microswitch