ریکوRicoh FT4015
E11 Exposure lamp problem
E12 Exposure lamp problem
E13 Zero cross ( copyir.com Main board or power supply board
E14 Same as E13
E21 Scan home problem
E22 Scan home problem
E28 Lens home sensor
E29 Lens home problem
E2A 4th & 5th mirror home problem
E2B 4th & 5th mirror home problem ( copyir.com Fuse 2 on AC/DC board
E40 Optics thermistor
E42 Bad transfer corona or HVT
E52 Low fuser temperature
E53 High fuser temperature
E54 Fuser lamp on too long
E55 Fuser thermistor open
U1 Right side open
U2 No key counter
U4 Sorter not latched, not closed
U6 Developer unit not in place