Fan Operation for Each Mode
This machine is designed for low-noise operation, especially at ambient and low temperature, and when the machine is in Low Duty mode, each fan motor runs at low speed or stops, and can even print when the machine is in noise suppression mode. The noise suppression mode can be turned ON/OFF with SP1-953-001 (Fan Low Noise Mode: OFF/ON). Default: ON.
Each fan operates based on the temperature readings of the temperature/humidity sensor (S11) (T) and the PSU thermistor (Tp).
| Machine mode | PCDU cooling fan (right) (FAN1) | PSU cooling fan (FAN3) | PCDU cooling fan (left) (FAN2) | |||
|---|---|---|---|---|---|---|
| During Warmup | Stop | Stop | Stop | |||
| During Standby | T<30°C | 30% | Tp<78°C | Stop | T<34°C | Stop |
| 30°C≤T<40°C | 50% | |||||
| 40°C≤T<42°C | 70% | 78°C≤Tp | Low speed (50%) | 34°C≤T<40°C | Low speed (50%) | |
| 42°C≤T<44°C | 90% | |||||
| 44°C≤T | 100% | 40°C≤T | High speed (100%) | |||
Standby (fusing OFF) | Stop | Same as "During Standby" above. | Stop | |||
| During PCDU cleaning and toner supply | Printing Mode | Same as "During Standby" above. | Printing Mode | |||
| Printing | Printing Mode | Printing Mode | Printing Mode | |||
| During PCDU cooling | 100% | High speed (100%) | High speed (100%) | |||
| Error status (door open, paper jam, SC code issued) | Stop | Same as "During Standby" above. | Stop | |||
Fan Operation in Printing Mode
The PCDU cooling fans (right/left) (FAN1, FAN2) operate based on the Paper Thickness selection and the temperature readings of the development thermistor.
| Image Creation Thermistor Temp. Reading | PCDU cooling fans (right/left) (FAN1, FAN2) | ||||
|---|---|---|---|---|---|
| Thin | Normal 1,2 | Medium Thick, Thick 1, 2 | Thick 3, Envelope, OHP, Postcard | ||
| Ts<30°C | Medium Duty Right: 70% | Low Duty*1 Right: 40% | Medium Duty Right: 70% | High Duty Right: 100%
| |
| 30°C≤Ts<32°C | Medium Duty Right: 70% | ||||
| 32°C≤Ts | High Duty Right: 100% | ||||
*1: Drops to Medium Duty after printing for 7 min.
The PSU cooling fan (FAN3) operates based on printing time count (C) and the temperature readings of the PSU thermistor (Tp). However, when the low noise mode is OFF, the fan operates at normal high speed.
| PSU Thermistor Temp. Reading | PSU cooling fan (FAN3) | ||
|---|---|---|---|
| C<200 | 200≤C<600 | C≤600 | |
| Tp<78°C | Stop | Low speed (50%) | High speed (100%) |
| 78°C≤Tp | High speed (100%) | High speed (100%) | High speed (100%) |
Fan Operation Control After Printing
The image creation thermistor (TH5) continues to monitor temperature at the end of the print job, and when the temperature reading is high the PCDU fan continues to operate and then later shifts to standby mode.
| Image Creation Thermistor Temp. Reading at End of Printing | CDU cooling fans (right/left) (FAN1, FAN2) | |
|---|---|---|
| Ts<10°C | No extended operation | |
| 10°C≤Ts<39°C | Operation extends for 45 sec. and ends once the temperature drops below 39°C. | Right: 40% |
| 39°C≤Ts | Operation extends for 45 sec. or continues until temperature drops below 39°C. | Right: 80% |