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Board LEDS
SM 4-45
B286/B289
Tr
ouble
-
shooting
4.7 BOARD LEDS
This section describes the functions of the LEDs on the most important PCBs.
4.7.1 PSU, MCU, IPU
PSU LEDs
The PSU supplies dc current to electrical components and also controls the flow of ac
current to the fusing lamp, dehumidifiers (x4), and anti-condensation heaters (x2).
No.
Color
Meaning
ON Normal
Vaa +24 V
GREEN
OFF
!
PSU defective, or the +24 V system has shorted or
is defective.
ON Normal
Vca2 –12 V GREEN
OFF
!
PSU defective, or the –12 V system has shorted or
is defective.
ON Normal
Vca2 +12 V GREEN
OFF
!
PSU defective, or the +12 V system (HDD) has
shorted or is defective.
ON Normal
Vcc +5.1 V GREEN
OFF
!
PSU defective, or the +5.1 system (Vcc2) has
Содержание B286
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Страница 35: ...INSTALLATION...
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Страница 117: ...PREVENTIVE MAINTENANCE...
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Страница 127: ...REPLACEMENT AND ADJUSTMENT...
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Страница 186: ...Boards B286 B289 3 58 SM 9 Remove the shield cover A x12 10 Remove A MCU x4 x1 B IPU x4...
Страница 198: ...Others B286 B289 3 70 SM 4 Remove the cooling fan D x 1 x 3...
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Страница 217: ...TROUBLESHOOTING...
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Страница 269: ...SERVICE TABLES...
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Страница 507: ...DETAILS...
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Страница 511: ...Overview SM 6 3 B286 B289 Details 6 1 2 MECHANICAL COMPONENT LAYOUT...
Страница 513: ...Overview SM 6 5 B286 B289 Details 6 1 3 DRIVE LAYOUT 1 Scanner Motor 2 Drum Motor 3 Main Motor 4 Fusing Motor...
Страница 526: ...Image Processing B286 B289 6 18 SM Text Mode...
Страница 529: ...Image Processing SM 6 21 B286 B289 Details Patched Original Mode...
Страница 530: ...Image Processing B286 B289 6 22 SM Generation Mode...
Страница 552: ...Development B286 B289 6 44 SM Toner End Recovery Flow Chart...
Страница 553: ...Paper Feed and Registration SM 6 45 B286 B289 Details 6 7 PAPER FEED AND REGISTRATION 6 7 1 OVERVIEW Layout Diagrams...
Страница 585: ...Fusing Unit SM 6 77 B286 B289 Details In the table below PR is the Pressure Roller and HR is the Hot Roller...
Страница 613: ...SPECIFICATIONS...
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