Olivetti d-Color MF4003 Service Manual page 640

d-Color MF4003/MF3303
1.18.2 Operation
(1) Function
Motor name
Machine cooling fan (FM1)
Toner suction fan (FM2)
CPU cooling fan (FM3)
CPU cooling fan (FM4)
(2) Fan control
Control conditions
• When controlling the IU
temperature decreasing weight
• When the door is opened
• In sleep state
• When trouble occurs
• In standby state*1
• Predrive operation
• During image stabilization
• During operation checking*1
• During a 1-sided print cycle
• During a 2-sided print cycle
• During a firmware upgrading
• *1: If the machine enters the "standby" state, the fan motor turns at full speed for predetermined time before stopping.
1.19 COUNTER CONTROL
1.19.1 Configuration
[1]
[2]
[1] Base board (BASEB)
1.19.2 Operation
Name
Electronic counter
NOTE
▪ The counting modes can be selected at [Billing Setting] of Service Mode. For details, see Counter Setting.
Service Manual
Function (purpose)
• Discharges heat generated from the DC power supply, or base board section to prevent
the internal temperature of the machine from rising.
• Sucks in and recovers the floating toner to prevent the toner from staining the internal
machine.
• Blows air in the duct between the HV board and paper exit tray. Thus, temperature
around the HV board can be prevented from increasing due to heat from the discharged
paper.
• Blows air on the paper exit tray to cool the paper.
• Blows air onto the CPU board to provide cooling.
• Discharges heat generated from the document main motor to prevent the internal
temperature of the machine from rising.
Machine cooling fan Toner suction fan
(FM1) (FM2)
Full speed
Half speed
Half speed
Full speed
Full speed
Full speed
Full speed
P-66
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
Motor name
CPU cooling fan
fan (FM3)
Full speed Full speed
Stop
Stop
Full speed Full speed
Full speed Full speed
Full speed Full speed
Stop
[2] Electronic counter
Function/system
• Number of total in copy/print/fax/scan mode will be displayed on
the screen as described below.
• Black, full color, mono color, and 2 color
• Total counter, large size counter, color total (copy + printer), scan
counter, fax TX counter, fax RX counter, original counter, paper
counter, total duplex counter, number of total pages output
• Counts one when an exit signal is applied to it.
DF cooling fan
(FM4)
Stop
Stop Stop
Stop Full speed
Full speed
Full speed
Full speed
Stop Stop
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