Ricoh D009, Service Manual

Page: 246 / 1165

SC Tables: SC5xx -2
D009/D011/D012/D013 4-20 SM
Fusing lamp consecutive full power 1
After warm-up the fusing lamp remains at full power for 15 seconds without
the hot roller rotating.
545 A
ƒ Disconnected or defective thermistors (center)
ƒ Defective fusing lamp
Fusing thermistor open (end)
The thermistor (end) detects 0°C or less for 5 sec.
551 A
ƒ Fusing thermistor (end) disconnected
ƒ Fusing thermistor (end) connector defective
Fusing temperature warm-up error (end)
This SC is generated if the following condition occurs:
ƒ
The thermistor (end) does not detect an 8°C increment in the fusing
temperature for 7.5 sec. just after the fusing temperature reached 45 °C.
ƒ The temperature of the end thermistor does not reach the target
temperature for 31 seconds after the fusing lamps turned on.
552 A
ƒ
Thermistor warped or broken
Fusing overheat error 1 (software detection)
A fusing temperature (at the end) of over 230 °C (446 °F) is detected for 1
second by the fusing thermistors at the center or at either end of the fusing
roller.
553 A
ƒ
Power supply unit defective
ƒ I/O board (IOB) defective
ƒ BICU defective
ƒ TRIAC short on PSU (PSU defective)