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- HP All-in-One Printer Manual

ManualsBrandsHP ManualsAll in One PrinterHP Business Desktop Pro 4300 C9H70UT All-in-One Computer C9H70UT#ABA
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100 Theory of operation Q2431-90912
Duplexer jam detection
The following paper sensors detect whether or not the print media is present and is feeding
normally.
● Tray 2 paper sensor (PS101)
● Pre-feed sensor (PS102)
● Top-of-page sensor (PS103)
● Face-down tray paper-full sensor (PS104)
● Tray 1 (multipurpose tray) paper sensor (PS105)
● Paper width sensor (PS106)
● Fuser delivery sensor 1 (PS108)
The microprocessor on the DC controller PCA detects a jam by using the sensor to check for
media presence at a specific timing that is stored in the memory.
If the DC controller PCA detects that a jam has occurred, it stops print operation and an error
message appears on the control-panel display. See “Alphabetical printer messages” on
page 258 and “Numerical printer messages” on page 274.