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DocuPrint N4525 Network Laser Printer - Service Guide
RAP 1-2
Error Code U1-3
LVPS Fan
Failure
There is a problem with the Low Voltage Power Supply Fan.
Logic Control on the Print Engine Controller Board detected a problem with the Low
Voltage Power Supply Fan.
Table 1-30 Error Code U1-3 LVPSFan Failure
Step
Actions and Questions
Yes
No
1
LOW VOLTAGE POWER SUPPLY FAN TEST
1. Enter Diagnostics Mode.
2. From the Main Menu, select Comp Output Test / LVPS
Fan High to check the Low Voltage Power Supply Fan
function.
3. Press [4] to start, [0] to stop.
Does Fan rotate when you start theLVPS Fan
Output Test?
Replace the
Print Engine
Controller
Board (RRP
1-72)
Replace the
Low Voltage
Power Supply
cooling fan
(RRP 1-67)