311 Modem test 33.6KBPS(V.34) 2
312 Modem test 28.8KBPS(V.34) 2
313 Modem test 24.0KBPS(V.34) 2
314 Modem test 16.8KBPS(V.34) 2
318 Modem test 12.0KBPS(V.17) 2
319 Modem test 7.2KBPS(V.29) 2
320 Modem test 2.4KBPS(V.27ter) 2
321 FAX image memory test 2
433 Power supply unit cooling fan-1 & 2 (high speed) ON/OFF 3
434 Power supply unit cooling fan-1 & 2 (low speed) ON/OFF 3
437 Laser optical unit cooling fan (Front) (high speed) ON/OFF 3
438 Laser optical unit cooling fan (Front) (low speed) ON/OFF 3
439 Laser optical unit cooling fan (Rear) (high speed) ON/OFF 3
440 Laser optical unit cooling fan (Rear) (low speed) ON/OFF 3
441 EPU cooling fan (high speed) ON/OFF 3
442 EPU cooling fan (low speed) ON/OFF 3
443 Bridge unit cooling fan (rear) (high speed) ON/OFF 3
444 Bridge unit cooling fan (rear) (low speed) ON/OFF 3
445 Main charger blowing fan ON/OFF 3
447 Ozone suctioning fan (high speed) ON/OFF 3
448 Ozone suctioning fan (low speed) ON/OFF 3
449 Scattered toner suctioning fan ON/OFF 3
451 Toner cartridge heat insulation fan (high speed) ON/OFF 3
452 Toner cartridge heat insulation fan (low speed) ON/OFF 3
453 IH board cooling fan (high speed) ON/OFF 3
454 IH board cooling fan (low speed) ON/OFF 3
455 Reversed paper cooling fan (high speed) ON/OFF 3
456 Reversed paper cooling fan (low speed) ON/OFF 3
457 Exit paper cooling fan (front) (high speed) ON/OFF 3
458 Exit paper cooling fan (front) (low speed) ON/OFF 3
459 Bridge unit cooling fan (front) (high speed) ON/OFF 3
460 Bridge unit cooling fan (front) (low speed) ON/OFF 3
461 Exit paper cooling fan (rear) (high speed) ON/OFF 3
462 Exit paper cooling fan (rear) (low speed) ON/OFF 3
463 Upper exhaust fan (left) ON/OFF 3
464 Upper exhaust fan (right) ON/OFF 3
465 Toner cooling exhaust fan ON/OFF 3
466 Upper exit section cooling fan-1&2 ON/OFF 3
467 Lower exit section cooling fan-1&2 ON/OFF 3
468 Lower exit section cooling fan-3 ON/OFF 3
470 Automatic power OFF at fuser unit temperature abnormality 4
*1
Do not let the sub-hopper toner motors rotate in reverse when toner cartridges are installed
tridges will become locked.