Lexmark C782 Service Manual - Page 60

error code service check, Hot fuser

Page 60 highlights

5061 Step 4 Actions and questions Check the printer is setting on a solid, flat surface. Is the printer setting on a solid, flat surface? 5 The front contamination shield is attached to the front plate of the ITU frame and lies on the top of the ITU belt. Is the front contamination shield lying on the ITU belt. 6 Remove the ITU and check the ITU belt position. If the belt has shifted to the front or to the rear it should be replaced. The belt must not shift more than 4 mm in either direction. Check by making the measurements as shown. The lower limit is 3.1 mm, the high limit is 8.1 mm, and the optimum position is 5.6 mm. Yes Go to step 5 Go to step 6 Replace the ITU assembly. See "ITU assembly removal" on page 4-49 and run the belt tracking. See "Belt Tracking (ITU 4th point adjustment)" on page 3-13. No Inform the customer that the printer must be setting on a solid, flat surface. Position the shield on top of the belt. Treat as a belt stall or signal communications problem. See "100.01 ITU error service check" on page 2-14. Has the ITU Belt shifted to the front or to the rear? 122.01 error code service check Hot fuser Error code 122.01 indicates that the fuser heated up too quickly or not quickly enough. Error code 122.01 may also indicate a problem in the fuser assembly with the hot roll bearings, hot roll thermistor, LVPS, or the system board. Step 1 Actions and questions Turn the printer on. Open the right side fuser access door. Observe the hot roll lamp to see if it turns on and off. You may have to observe the lamp for a few minutes to see if it turns on and off. Does the lamp turn on and off? 2 Turn the printer on. Measure the voltage on connector J17-11 on the system board. The voltage should measure approximately +0.13 V dc and +0.64 V dc as the hot roll lamp turns on and off. Is the voltage correct? Yes Go to step 2 Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. No Replace the LVPS assembly. See "LVPS assembly removal" on page 4-53. Replace the system board. See "System board removal" on page 4-89. 2-18 Service Manual

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2-18
Service Manual
5061
122.01 error code service check
Hot fuser
Error code 122.01 indicates that the fuser heated up too quickly or not quickly enough. Error code 122.01 may
also indicate a problem in the fuser assembly with the hot roll bearings, hot roll thermistor, LVPS, or the system
board.
4
Check the printer is setting on a solid, flat surface.
Is the printer setting on a solid, flat surface?
Go to step 5
Inform the
customer that the
printer must be
setting on a solid,
flat surface.
5
The front contamination shield is attached to the front
plate of the ITU frame and lies on the top of the ITU
belt.
Is the front contamination shield lying on the ITU belt.
Go to step 6
Position the
shield on top of
the belt.
6
Remove the ITU and check the ITU belt position. If the
belt has shifted to the front or to the rear it should be
replaced. The belt must not shift more than 4 mm in
either direction. Check by making the measurements
as shown. The lower limit is 3.1 mm, the high limit is
8.1 mm, and the optimum position is 5.6 mm.
Has the ITU Belt shifted to the front or to the rear?
Replace the ITU
assembly. See
“ITU assembly
removal” on
page 4-49
and
run the belt
tracking. See
“Belt Tracking
(ITU 4th point
adjustment)” on
page 3-13
.
Treat as a belt
stall or signal
communications
problem. See
“100.01 ITU
error service
check” on
page 2-14
.
Step
Actions and questions
Yes
No
1
Turn the printer on. Open the right side fuser access
door. Observe the hot roll lamp to see if it turns on and
off. You may have to observe the lamp for a few
minutes to see if it turns on and off.
Does the lamp turn on and off?
Go to step 2
Replace the
LVPS assembly.
See
“LVPS
assembly
removal” on
page 4-53
.
2
Turn the printer on. Measure the voltage on connector
J17-11 on the system board. The voltage should
measure approximately +0.13 V dc and +0.64 V dc as
the hot roll lamp turns on and off.
Is the voltage correct?
Replace the fuser
assembly. See
“Fuser
assembly
removal” on
page 4-44
.
Replace the
system board.
See
“System
board removal”
on page 4-89
.
Step
Actions and questions
Yes
No