HP color laserjet 2550 series Manuale Di Servizio

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Delivery delay jam. The registration clutch is on, and the fuser-delivery sensor (PS1)
does not detect the leading edge of the media within 2.3 seconds after the start of a re-
pickup operation.

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Delivery stationary jam. The leading edge of media does not pass the fuser-delivery
sensor (PS1) within 2.4 seconds after it has passed the registration sensor (PS711).

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Door-open jam. The main CPU detects that the top cover is open during a print operation.

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Residual jam. The main CPU detects one or more of the following conditions:

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Power is turned on.

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The printer door is closed after a jam occurrence.

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The registration sensor (PS711) and fusing-delivery sensor (PS1) detect media.

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Paper pickup failure. The sensor (PS717) near the feed roller does not detect media
moving through the printer.

Chapter 4 Theory of operation

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