5-3
Troubleshooting
3) Input Check (FP-7718/7722)
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: Lighting
Code
Function Condition
Light Exposure indicator
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Dark
No.
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01 a) Registration roller paper pass Paper is not detected.
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sensor
b) Mirror home position sensor Mirror unit in home position.
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c) Lens home position sensor Lens unit in home position.
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02 a) Copier front cover Cover opened.
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b) Developer unit detecting sensor Developer unit is not
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detected.
c) +5V line error signal +5V line is defective.
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03 Original size Ledger/A3
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detection sensor Legal/B4-FLS
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Letter/A4
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Letter R/A4R
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Invoice/A5
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04 a) Sheet bypass paper detecting Paper is not detected.
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sensor
b) Sheet bypass paper size Ledger/A3
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detection sensor Legal/B4-FLS
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(except FP-7718) Letter/A4
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Letter R/A4R
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Invoice/A5
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c) Platen open/close sensor Platen is closed.
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d) Platen angle sensor Platen is not open more
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than 30 degrees.
e) Copier paper feed cover Cover is opened
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05 a) Developer cooling fan motor Motor is locked.
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b) +10V line error signal +10V line is defective.
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c) Discharge lamp error signal 1 Lamp is lit.
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d) Discharge lamp error signal 2 Lamp is lit.
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e) Dust collecting fan motor Motor is locked.
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f) Suction fan motor Motor is locked.
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g) High voltage leak detection High voltage leak is not
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(Separation corona) detected. (Normal)
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