Samsung MultiXpress M537x series Service Manual page 317

► Error Code
U2–1113
► Error message
LSU Failure: #U2-1113. Please turn off then on.
► Symptom
LSU Hsync signal can not be detected correctly. LSU Hsync signal is abnormal.
► Troubleshooting method
1) Turn the machine off then on.
2) Print a demo page to check that the machine operates normally.
3) If the problem persists, check the following :
a) Enter SVC mode to check the LSU Hsync signal.
b) Select "LSU Hsync4".
( Diagnostics > Engine Diagnostics > Engine Test Routines > 110-0170)
c) Press 'Start' button. Check that the status has changed to 'Executing -> Low -> High'.
d) If the status has not changed, LSU Hsync signal is abnormal.
e) Turn the machine off. Unplug and reconnect the LSU cable.
Check LSU Hsync signal once again.
f) If the problem persists, replace the LSU.
Copyright© 1995-2013 SAMSUNG. All rights reserved.
4. Troubleshooting
4-181