Oki IP-6620 Maintenance Manual page 548

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