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Board LEDS
B286/B289 4-46
SM
No.
Color
Meaning
shorted or is defective.
ON
Normal. Also remains on in auto off mode.
Vcc1 +5.1 V GREEN
OFF
!
PSU defective, or the +5.1 system (Vcc1) has
shorted or is defective.
MCU LEDs
The MCU (Main Control Unit) performs system control, base engine control, scanner
control, and also controls the IPU. The MCU also controls:
!
I/O for the base engine (high voltage power supply, motors, sensors, solenoids,
clutches, fusing temperature, customer support systems, etc.)
!
Scanning signals (sensors, motors)
!
Power
supply
!
Scanner motor output
MCU LED 1 to 4
No.
Color
Operation
LED Action
Firmware update
Flashes rapidly
LED 1
GREEN
End of firmware update, normal operation Flashes slowly
Firmware update
On
LED 2
GREEN
End of firmware update, normal operation Off
Firmware update
Flashes rapidly
LED 3
ORANGE
End of firmware update, normal operation Flashes slowly
Firmware update
On
LED 4
ORANGE
End of firmware update, normal operation Off
Summary of Contents for B286
Page 1: ...B286 B289 SERVICE MANUAL 003165MIU...
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Page 3: ...B286 B289 SERVICE MANUAL...
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Page 5: ...B286 B289 SERVICE MANUAL 003165MIU...
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Page 35: ...INSTALLATION...
Page 36: ......
Page 117: ...PREVENTIVE MAINTENANCE...
Page 118: ......
Page 127: ...REPLACEMENT AND ADJUSTMENT...
Page 128: ......
Page 186: ...Boards B286 B289 3 58 SM 9 Remove the shield cover A x12 10 Remove A MCU x4 x1 B IPU x4...
Page 198: ...Others B286 B289 3 70 SM 4 Remove the cooling fan D x 1 x 3...
Page 216: ......
Page 217: ...TROUBLESHOOTING...
Page 218: ......
Page 269: ...SERVICE TABLES...
Page 270: ......
Page 507: ...DETAILS...
Page 508: ......
Page 511: ...Overview SM 6 3 B286 B289 Details 6 1 2 MECHANICAL COMPONENT LAYOUT...
Page 526: ...Image Processing B286 B289 6 18 SM Text Mode...
Page 529: ...Image Processing SM 6 21 B286 B289 Details Patched Original Mode...
Page 530: ...Image Processing B286 B289 6 22 SM Generation Mode...
Page 552: ...Development B286 B289 6 44 SM Toner End Recovery Flow Chart...
Page 613: ...SPECIFICATIONS...
Page 614: ......