Diagnostic Information
2-83
5060-XXX
Error Code 127
Backup Roll Thermistor or thermistor circuits are open.
Hot Fuser Service Check
Error codes 124, 125, 134, and 135 display whenever the printer detects a problem with
the fuser running over temperature or the fuser lamps have been on too long.
Error Code 124
Error Code 134
Error codes 124 and 134 indicate that the fuser is running over temperature or the hot roll
fuser lamp has been on too long.
These error codes indicate that a problem could exist in the fuser assembly with the hot
roll bearings, hot roll thermistor or other hot roll parts. The LVPS or engine board
assembly can also be failing.
2
Voltage Check - Measure the voltage on J10-6. Go to
“Engine Board” on page 5-1
. The voltage will vary as the
lamp turns off and on between approxi1.5 V dc to
1.8 V dc.
Is the voltage correct?
Find the
correct system
problem or
error code
Replace the
following
FRU's in
order:
1.
“LVPS” on
page 4-14
2.
“Engine
Board” on
page 4-13
Step
Action and Questions
Yes
No
1
Thermistor Resistance Check, Back Up Roll - The
thermistor resistance can be checked between pins 7and 8
on the ten pin fuser control connector on the fuser
assembly. Go to
“LVPS Fuser Connectors” on page 5-20
.
Measure the resistance of the back up roll thermistor
assembly. The resistance measures as follows:
Thermistor Hot: approximately 4.0K ohms
Thermistor Cold: Approximately 256K ohms
Note: The resistance will vary between 4K and 256K ohms
depending on the temperature of the thermistor.
Is the resistance correct?
Go to step 2
Replace the
“Fuser” on
page 4-15
2
Voltage Check - Measure the voltage on J10-6. Go to
“Engine Board” on page 5-1
. The voltage will vary as the
lamp turns off and on between approxi1.5 V dc to
1.8 V dc.
Is the voltage correct?
Find the
correct system
problem or
error code
Replace the
following
FRU's in
order:
1.
“LVPS” on
page 4-14
2.
“Engine
Board” on
page 4-13
Step
Action and Questions
Yes
No
Summary of Contents for 13P0150 - C 750dtn Color Laser Printer
Page 2: ... ii 6000 XXX ...
Page 4: ...5060 XXX ...
Page 10: ...viii 5060 XXX ...
Page 18: ...xiv Service Manual 5060 XXX ...
Page 120: ...2 100 Service Manual 5060 XXX ...
Page 199: ...Connector Locations 5 17 5060 XXX RIP Board ...
Page 203: ...Connector Locations 5 21 5060 XXX High Capacity 2000 Sheet Board ...
Page 205: ...Connector Locations 5 23 5060 XXX HVPS Board ...
Page 207: ...Connector Locations 5 25 5060 XXX HVPS Developer Board ...
Page 208: ...5 26 Service Manual 5060 XXX ...
Page 212: ...7 2 Service Manual 5060 XXX Assembly 1 Covers ...
Page 214: ...7 4 Service Manual 5060 XXX Assembly 1 1 Covers ...
Page 220: ...7 10 Service Manual 5060 XXX Assembly 5 Paper Feed Output Redrive ...
Page 222: ...7 12 Service Manual 5060 XXX Assembly 6 Multipurpose Feeder MPF ...
Page 224: ...7 14 Service Manual 5060 XXX Assembly 7 500 Sheet Integrated Tray ...
Page 228: ...7 18 Service Manual 5060 XXX Assembly 10 Cartridge Contact Assembly ...
Page 230: ...7 20 Service Manual 5060 XXX Assembly 11 Electronics ...
Page 232: ...7 22 Service Manual 5060 XXX Assembly 11 1 Electronics ...
Page 240: ...7 30 Service Manual 5060 XXX Assembly 12 Output Expander ...
Page 242: ...7 32 Service Manual 5060 XXX Assembly 12 1 Output Expander ...
Page 244: ...7 34 Service Manual 5060 XXX Assembly 13 5 Bin Mailbox ...
Page 246: ...7 36 Service Manual 5060 XXX Assembly 13 1 5 Bin Mailbox ...
Page 248: ...7 38 Service Manual 5060 XXX Assembly 14 500 Sheet Tray Option ...
Page 250: ...7 40 Service Manual 5060 XXX Assembly 14 1 500 Sheet Tray Option ...