Phaser 7500 Printer Service Manual
4-29
General Troubleshooting
Tray 2
For Tray 2, media size is detected by the state of five paper size switches. Media
size is sensed by the voltage corresponding to the combined resistance of SW1
through SW4 and the state of SW5 (On/Off). A failed or jammed switch effects the
printer’s ability to accurately detect media size or presence in the tray.
Included in the table are the expected values for voltage readings at J417-B4. Also
listed are the range of A/D converter values. Any combination other than the ones
listed result in an undetermined size.
*1 Paper size is changed in diag.
*2 System setting makes possible changing between GCO and TFX sizes
Paper Size Switch Output Values Tray 2
Paper Size
SW1 SW2 SW3 SW4 SW5
Voltage at
J417-B4
AD
Value
No
Tray
Off Off Off Off Off 3.08±0.066
922-989
A5 SEF 5.5" x 8.5"
SEF (*1)
Off Off On Off Off 2.671±0.066
797-857
B5
SEF
Off Off On On On 2.468±0.066
735-796
8.5" x 13" SEF
Off
On
Off
On
Off
2.064±0.066
610-671
8.5" x 14" SEF
Off
On
Off
On
On
A4 SEF
Off
On
On
Off
Off
1.864±0.066
548-609
8.5" x 11" SEF
Off
On
On
Off
On
A4
LEF
On Off On Off Off 1.079±0.066
304-365
A3
SEF
On Off On On Off 0.881±
0.066 244-303
B5 LEF 7.25" x
10.5" LEF (*1)
On On Off Off On 0.691±
0.066 184-243
8K SEF (*2)
On
On
Off
On
Off
0.493±0.066
124-183
B4
SEF
On On Off On On
8.5" x 11" LEF
On
On
On
Off
Off
0.300±0.066
64-123
16K LEF (*2)/ 7.25"
x 10.5" LEF (*1)
On On On Off On
11"
x
17"
SEF
On On On On On 0.106±0.066
0-63
Summary of Contents for PHASER 7500
Page 1: ...Phaser 7500 Color Printer Phaser 7500 Service Manual Xerox Internal Use Only ...
Page 2: ......
Page 60: ...1 30 Phaser 7500 Printer Service Manual General Information ...
Page 448: ...3 310 Phaser 7500 Printer Service Manual Error Messages and Codes ...
Page 484: ...4 36 Phaser 7500 Printer Service Manual General Troubleshooting ...
Page 544: ...5 60 Phaser 7500 Printer Service Manual Print Quality Troubleshooting ...
Page 545: ...6 Chapter Adjustments and Calibrations In this chapter Adjustments Calibrations ...
Page 554: ...6 10 Phaser 7500 Printer Service Manual Adjustments and Calibrations ...
Page 562: ...7 8 Phaser 7500 Printer Service Manual Cleaning and Maintenance ...
Page 900: ...9 118 Phaser 7500 Printer Service Manual Parts List ...
Page 958: ...10 58 Phaser 7500 Printer Service Manual Plug Jack and Wiring Diagrams ...
Page 980: ...11 22 Phaser 7500 Printer Service Manual Reference ...
Page 990: ...I 10 Phaser 7500 Printer Service Manual Index ...
Page 991: ......