Diagnostic Information
2-21
4520-xxx
Duplex Unit Sub Error Codes
Status byte 4 contains the most valuable information to help isolate a
failing part or assembly in the duplex unit and is the only byte
contained in the following table.
Status
Byte 4
Explanation
00
No duplex error. No problem was reported to the engine by the
duplex system card.
01
The leading edge of the sheet of paper never arrived at the input
sensor.
02
The duplex unit engine board never received media notification
from the printer.
03
The trailing edge of the sheet of paper never cleared the input
sensor.
04
The leading edge of the sheet of paper never arrived at the exit
sensor.
Note: This error is the most common due to the long length of the
paper path between the input sensor and the exit sensor.
05
The duplex logic thinks a sheet of paper is feeding to the duplex
unit due to a sensor malfunction in the paper path when in fact the
printer has not sent a command to send a sheet of paper to the
duplex unit.
06
The exit sensor detected a sheet of paper too early.
07
The sheet of paper trailing edge did not clear the exit sensor in the
desired length of time.
08
The feed motor experienced a complete motor stall.
0E
The D.C. motor is under speed. The motor never reached the
correct operating speed.
13
There is paper left in the duplex unit. Paper was sensed during
the homing operation during POST.
15
There is paper left in the duplex unit. Paper was sensed during
the D.C. motor diagnostic test during POST.
18
The D.C. motor experienced an acceleration error.
3D
There is paper left in the duplex unit. Paper was sensed during IR
clear during POST.
Summary of Contents for T52 Series
Page 8: ...viii Service Manual 4520 xxx ...
Page 10: ...x Service Manual 4520 xxx Class 1 Laser Statement Label ...
Page 17: ...Notices and Safety Information xvii 4520 xxx Japanese Laser Notice Chinese Laser Notice ...
Page 24: ...xxiv Service Manual 4520 xxx ...
Page 162: ...3 30 Service Manual 4520 xxx ...
Page 224: ...5 2 Service Manual 4520 xxx ...
Page 231: ...Connector Locations 5 9 4520 xxx Engine Board ...
Page 232: ...5 10 Service Manual 4520 xxx Controller Board Non Network ...
Page 233: ...Connector Locations 5 11 4520 xxx Controller Board Network ...
Page 235: ...Connector Locations 5 13 4520 xxx ...
Page 237: ...Connector Locations 5 15 4520 xxx 210 220 001 002 ...
Page 239: ...Connector Locations 5 17 4520 xxx ...
Page 242: ...5 20 Service Manual 4520 xxx ...
Page 246: ...7 2 Service Manual 4520 xxx Assembly 1 Covers ...
Page 248: ...7 4 Service Manual 4520 xxx Assembly 2 Frame ...
Page 250: ...7 6 Service Manual 4520 xxx Assembly 2 Frame continued ...
Page 252: ...7 8 Service Manual 4520 xxx Assembly 3 Printhead ...
Page 254: ...7 10 Service Manual 4520 xxx Assembly 4 Paper Feed Autocompensator ...
Page 256: ...7 12 Service Manual 4520 xxx Assembly 5 Paper Feed Multipurpose Unit ...
Page 258: ...7 14 Service Manual 4520 xxx Assembly 6 Paper Feed Alignment ...
Page 260: ...7 16 Service Manual 4520 xxx Assembly 7 Paper Feed Output ...
Page 262: ...7 18 Service Manual 4520 xxx Assembly 8 Integrated Paper Tray 500 Sheet ...
Page 264: ...7 20 Service Manual 4520 xxx Assembly 9 Main Drive ...
Page 266: ...7 22 Service Manual 4520 xxx Assembly 10 Developer Drive ...
Page 268: ...7 24 Service Manual 4520 xxx Assembly 11 Hot Roll Fuser ...
Page 270: ...7 26 Service Manual 4520 xxx Assembly 12 Transfer ...
Page 272: ...7 28 Service Manual 4520 xxx Assembly 13 Charging ...
Page 274: ...7 30 Service Manual 4520 xxx Assembly 14 Electronics 1 ...
Page 276: ...7 32 Service Manual 4520 xxx Assembly 14 Electronics I continued ...
Page 278: ...7 34 Service Manual 4520 xxx Assembly 15 Electronics II ...
Page 280: ...7 36 Service Manual 4520 xxx Assembly 16 Electronics III ...
Page 282: ...7 38 Service Manual 4520 xxx Assembly 17 Electronics IV ...
Page 284: ...7 40 Service Manual 4520 xxx Assembly 18 Electronics V ...
Page 286: ...7 42 Service Manual 4520 xxx Assembly 19 Electronics VI ...
Page 288: ...7 44 Service Manual 4520 xxx Assembly 20 250 Sheet Tray ...
Page 290: ...7 46 Service Manual 4520 xxx Assembly 20 250 Sheet Tray continued ...
Page 292: ...7 48 Service Manual 4520 xxx Assembly 21 Integrated Paper Tray 250 Sheet ...
Page 294: ...7 50 Service Manual 4520 xxx Assembly 22 500 Sheet Tray ...
Page 296: ...7 52 Service Manual 4520 xxx Assembly 22 500 Sheet Tray continued ...
Page 298: ...7 54 Service Manual 4520 xxx Assembly 23 Duplex Unit ...
Page 300: ...7 56 Service Manual 4520 xxx Assembly 23 Duplex Unit continued ...
Page 302: ...7 58 Service Manual 4520 xxx Assembly 23 Duplex Unit continued ...
Page 304: ...7 60 Service Manual 4520 xxx Assembly 24 Envelope Feeder ...
Page 306: ...7 62 Service Manual 4520 xxx Assembly 25 High Capacity Feeder ...
Page 308: ...7 64 Service Manual 4520 xxx Assembly 25 High Capacity Feeder continued ...
Page 310: ...7 66 Service Manual 4520 xxx Assembly 25 High Capacity Feeder continued ...
Page 312: ...7 68 Service Manual 4520 xxx Assembly 25 High Capacity Feeder continued ...
Page 314: ...7 70 Service Manual 4520 xxx Assembly 25 High Capacity Feeder continued ...
Page 316: ...7 72 Service Manual 4520 xxx Assembly 26 Kiosk Vertical Paper Adapter ...
Page 318: ...7 74 Service Manual 4520 xxx Assembly 27 Kiosk Horizontal Paper Adapter ...
Page 324: ...7 80 Service Manual 4520 xxx ...
Page 334: ...I 10 Service Manual 4520 xxx ...