Chapter 9
9-2
Switching between full-speed rotation and half-speed rotation is controlled as described below.
1) Full-speed control
When the CPU on the DC controller outputs a fan full speed signal (FAN_FULL), the fan drive voltage switching circuit supplies a +24 V fan drive voltage to turn
the heat exhaust fan at the full speed.
2) Half-speed control
When the CPU on the engine controller outputs a fan half speed signal (FAN_HALF), the fan drive voltage switching circuit supplies a +16 V fan drive voltage to
turn the heat exhaust fan at the half speed.
Fan Control Sequence
F-9-4
E805-0000 (Main body fan error)
When the cooling fan of the main body starts, the fan lock detection signal (FAN_LOCK) has been held at the "H" level for longer than the prescribed time.
9.3 Power Supply System
9.3.1 Power Supply
9.3.1.1 Outline
0017-5483
When the main power switch (SW1) is turned on, AC power is supplied to the low-voltage power supply circuit in the power supply PCB.
The low-voltage power supply circuit su3.3 V, +5 V, and +24 V to operate the machine.
+24 V is supplied to the motors, fan, electromagnetic clutch, solenoid, etc. +5 V and +3.3 V are supplied to the sensor, etc.
There are two types of +24 V voltages: +24 V which is normaly supplied from the low voltage power supply and +24 VR which is cut off when the front cover or
the left door is opened. The +24 VR also plays the role of a door open detection signal (DOPEN). This signal allows the CPU to detect that the front cover or the
left door has opened.
T-9-1
Part Name
Function
Power supply PCB
Generates DC power from AC power.
Option power supply PCB (option)
Generates DC power from AC power for the options.
Main power switch (SW1)
Supplies AC power to the power supply PCB.
Front cover switch (SW2)
Detects opening/closing of the front cover and cuts off +24 VR.
Left door switch (SW3)
Detects opening/closing of the left door and cuts off +24 VR.
INTR STBY
WMUPR
: Half speed (+16V)
: Full speed (+24V)
LSTR
30sec
STBY
Heat Discharge Fan
(FM1)
Registration sensor
(SR209)
Fixing Drive Motor
(M201)
Power switch ON/
Going out of sleep mode
Copy start key ON
Power switch OFF/
Going into sleep mode
Summary of Contents for iR2018 Series
Page 1: ...Oct 11 2007 Service Manual iR2030 2025 2022 2018 Series iR2030 ...
Page 2: ......
Page 6: ......
Page 19: ...Chapter 1 Introduction ...
Page 20: ......
Page 22: ......
Page 42: ...Chapter 1 1 20 1 2 7 Function List 1 2 7 1 Printing Speed iR2030 iR2030i 0017 5909 ...
Page 43: ......
Page 46: ......
Page 47: ...Chapter 2 Installation ...
Page 48: ......
Page 50: ......
Page 80: ...Chapter 2 2 30 ...
Page 81: ...Chapter 3 Main Controller ...
Page 82: ......
Page 84: ......
Page 96: ......
Page 97: ...Chapter 4 Original Exposure System ...
Page 98: ......
Page 100: ...Contents 4 4 8 2 Removing the Reader Heater Left 4 20 ...
Page 122: ......
Page 123: ...Chapter 5 Laser Exposure ...
Page 124: ......
Page 126: ......
Page 133: ...Chapter 6 Image Formation ...
Page 134: ......
Page 136: ......
Page 148: ......
Page 149: ...Chapter 7 Pickup Feeding System ...
Page 150: ......
Page 169: ...Chapter 8 Fixing System ...
Page 170: ......
Page 172: ......
Page 184: ......
Page 185: ...Chapter 9 External and Controls ...
Page 186: ......
Page 203: ...Chapter 10 RDS ...
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Page 206: ......
Page 215: ...Chapter 11 Maintenance and Inspection ...
Page 216: ......
Page 218: ......
Page 221: ...Chapter 12 Standards and Adjustments ...
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Page 227: ...Chapter 12 12 3 ...
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Page 229: ...Chapter 13 Correcting Faulty Images ...
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Page 244: ...F 13 11 F 13 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ...
Page 245: ...Chapter 14 Self Diagnosis ...
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Page 260: ......
Page 261: ...Chapter 15 Service Mode ...
Page 262: ......
Page 319: ...Chapter 16 Upgrading ...
Page 320: ......
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Page 340: ......
Page 341: ...Chapter 17 Service Tools ...
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Page 347: ...Oct 11 2007 ...
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