Ricoh A-P4, Service Manual

Page: 341 / 381

Each paper size has its own actuator, with a unique combination of notches. To determine the paper size,
the CPU reads which switches the actuator has turned off.
The CPU disables paper feed from a tray if the paper size cannot be detected. If the paper size actuator
is broken, or if there is no tray installed, the printer control board recognizes that the paper tray is not
installed.
When the paper size actuator is at the “*” mark, the paper tray can be set up to accommodate one of a
wider range of paper sizes by using a menu setting on the machine’s operation panel.
Models Paper Size Switch
North America Europe/Asia 1 2 3 4
8
1
/
2
" x 13" Portrait A3 Portrait ON ON OFF ON
A4 Landscape A4 Landscape ON ON ON ON
A4 Portrait A4 Portrait ON OFF ON ON
11" x 17" Portrait A5 Portrait OFF OFF ON ON
8
1
/
2
" x 14" Portrait 8" x 13" Portrait ON OFF OFF OFF
8
1
/
2
" x 11" Portrait 8
1
/
2
" x 11" Portrait ON ON OFF OFF
8
1
/
2
" x 11" Landscape 8
1
/
2
" x 11" Landscape ON OFF ON OFF
* * ON ON ON OFF
ON: Pushed, OFF: Not Pushed
Paper Height Detection
Two paper height sensors [A] and [B], working in combination, detect the amount of paper in the tray.
6. Details
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