Oki IP-6620 - Page 548

OKI Data Infotech Corporation CONFIDENTIAL
Chapter 8 Operation Mechanism
8-27
 Fans
The following table lists the fans used for the printer.
Name
Type
Voltage
Driving board
Control items
Error
detection
Remarks
Suction fan
1 to 4
Sirocco fan
24 V
PCB-ASSY-ACT3
Variable driving
voltage via DA
converter
Lock
detection
Exhaust fan
1 to 2
Axial fan
24 V
PCB-ASSY-ACT3
ON/OFF
None
Two fans are
controlled
together.
Electrical
unit cooling
fan
Axial fan
24 V
PCB-ASSY-ACT3
Always ON
None
PSU cooling
fan
Axial fan
24 V
PCB-ASSY-ACT3
Always ON
None
Print head
cooling fan 1
to 2
Axial fan
24 V
PCB-ASSY-HCB1M
Variable driving
voltage via DA
converter
Rear fan
1 to 4
Axial fan
24 V
PCB-ASSY-ACT3
ON/OFF
None
 Heaters
The following table lists the heaters used for the printer.
Name
Type
Voltage
Driving board
Control
items
Error
detection
Remarks
Preheater
Aluminum
foil heater
AC
PCB-ASSY-TRC-MW
Software PID
control
Thermistor
Thermostat
1 circuit
configuration
Printheater
Linear
heater
AC
PCB-ASSY-TRC-MW
Software PID
control
Thermistor
Thermostat
1 circuit
configuration
Afterheater
Aluminum
foil heater
AC
PCB-ASSY-TRC-MW
Software PID
control
Thermistor
Thermostat
1 circuit
configuration
Head
heater
Chip
resistor
38 V
PCB-ASSY-HCB1M
Software PID
control
Thermistor
Thermal fuse
Overheat
protection
Included in
the print
head