Xerox Phaser 7500 Service Manual page 478
Hide thumbs
Also See for Phaser 7500:
- Benutzerhandbuch (172 pages) ,
- Service manual (120 pages) ,
- System administrator manual (116 pages)
Table of Contents
Advertisement
General Troubleshooting
4-30
Trays 3 through 5
For optional Trays 3 through 5, media size is detected by the state of five paper
size switches located at the rear of the chassis. 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 J548-14,
J549-B11, and J549-B17 respectively. Also listed are the range of A/D converter
values. Any combination other than the ones listed result in an undetermined size.
Paper Size Switch Output Values Trays 3 through 5
Paper Size
SW1 SW2 SW3 SW4 SW5
No Tray
Off
A5 SEF 5.5" x 8.5"
Off
SEF (*1)
B5 SEF
Off
8.5" x 13" SEF
Off
8.5" x 14" SEF
Off
A4 SEF
Off
8.5" x 11" SEF
Off
8" x 10" SEF
Off
12.6" x 19.2" SEF/
On
13" x 19" SEF (*1)
SRA3 SEF/ 13" x 18"
On
SEF/ 2" x 18" SEF (*1)
A4 LEF
On
A3 SEF
On
B5 LEF 7.25" x 10.5"
On
LEF(*1)
8K SEF (*2)
On
B4 SEF
On
8.5" x 11" LEF
On
16K LEF (*2)/ 7.25" x
On
10.5" LEF (*1)
11" x 17" SEF
On
*1 Paper size is changed in diag.
*2 System setting makes possible changing between GCO and TFX sizes
Off
Off
Off
Off
Off
On
Off
Off
Off
On
On
On
On
Off
On
Off
On
Off
On
On
On
On
Off
Off
On
On
Off
On
On
On
On
On
Off
Off
Off
On
Off
Off
On
On
Off
On
Off
Off
Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
On
Off
On
On
On
On
Off
Off
On
On
Off
On
On
On
On
On
Phaser 7500 Printer Service Manual
AD
Voltage
Value
4.66±0.03
237-247
4.01±0.03
199-214
3.69±0.03
184-198
3.07±0.03
153-167
2.75±0.03
137-152
2.44±0.03
122-136
2.15±0.03
107-121
1.83±0.03
92-106
1.52±0.03
77-91
1.21±0.03
61-76
0.91±0.03
46-60
0.60±0.03
31-45
0.30±0.03
16-30
0.00±0.03
0-15
Advertisement
Table of Contents
Troubleshooting
