Phaser 7500 Printer Service Manual 3-17
Error Messages and Codes
Paper Size Detection
Tray 1 (MPT)
Paper width (size in fast scan direction) is sensed by the voltage corresponding to
the Tray 1 (MPT) Paper Size Sensor resistance. Tray 1 (MPT) Paper Size Sensor
resistance is determined by the position of the front and rear side guides. Some
variation in values is normal within the specified range.
Paper length (size in slow scan direction) is sensed by measuring how long
paper takes to pass Registration Sensor.
Paper Size Switch Output Values for Tray 1(MPT)
Paper Size Voltage (V) AD Value Range
Post Card 2.676 - 2.732 824.958 - 851.600
5.5" x 8.5" SEF 2.246 - 2.302 691.590 - 718.233
A5 SEF 2.156 - 2.212 663.708 - 690.350
B5 SEF 1.788 - 1.843 549.488 - 576.131
8" x 10" SEF 1.636 - 1.692 502.457 - 529.099
8.5" x 11" SEF (Letter) & x 13" & x 14" 1.503 - 1.559 461.304 - 487.947
A4 SEF 1.484 - 1.540 455.425 - 482.068
7.25" x 10.5" LEF 0.972 - 1.028 296.694 - 323.337
B5 LEF 0.975 - 1.031 297.534 - 324.176
B4 SEF
16K LEF (Taiwan) 0.867 - 0.922 263.940 - 290.583
8K SEF (Taiwan)
16K LEF (China) 0.834 - 0.890 253.862 - 280.504
8K SEF (China)
11" x 17" SEF 0.732 - 0.788 222.284 - 248.926
8.5" x 11" LEF (Letter)
A4 LEF 0.541 - 0.597 163.159 - 189.801
A3 SEF
12.6" x 19.2" SEF 0.415 - 0.470 123.854 - 150.496
13" x 19" (x18") 0.308 - 0.364 90.932 - 117.574
SRA3 0.292 - 0.348 85.893 - 112.535
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