Canon S820MG, Руководство по обслуживанию

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Download Service Manual ManualsBooks
S900/ S820/ S750/ S520
Part 2: Troubleshooting
2.3 Troubleshooting Problems
Problem Probable Cause / Check Items Solution
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Power does not turn on.
After power ON, it
immediately turns off
again.
1. AC adapter, 2. Logic board 1. Replace faulty parts.
The print head is not
recognized. It does not
return to the home
position. 1. Print head, 2. Print head
contacts, 3. Carriage flex cable 1. Remove and reinstall
print head / check the
contacts, 2. Replace faulty
parts.
Abnormal noise
1. Dislodged parts, 2. Dislodged
pinch roller
1. Remove foreign matter,
2. Reinstall dislodged
parts
Printing stops midway. 1. Logic board 1. Replace faulty parts.
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Multiple sheets are fed
at a time. 1. ASF (Return tab, faulty
pressure roller operation) 1. Replace faulty parts.
Paper is not fed. 1. Foreign matter, 3. PE sensor
arm 1. Remove foreign matter,
2. Replace faulty parts, 3.
Replace ASF unit
Paper is fed skewed. 1. Paper guide, 2. Foreign matter
adhering to paper feed rollers 1. Adjust the paper guide
to the correct position, 2.
Remove foreign matter.
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No printing.
No color. 1. Print head, 2. Ink tanks, 3.
Purge unit 1. Replace faulty parts.
Scrape marks or white
stripes appear even after
cleaning.
Lines not in the printing
data appear. 1. Print head, 2. Ink tanks, 3.
Purge unit, 4. Print head
contacts, 5. Carriage flex cable 1. Remove and reinstall
print head / check the
contacts, 2. Replace faulty
parts.
The paper is stained.
1. Ink mist from the paper
transport section in the printer,
2. The ink absorber (platen) is
dirty. 1. Feed through several
sheets of clean paper, 2.
Replace the ink absorber
(platen), 3. Purge unit.
Spur marks appear. 1. Deformed spur tips. 1. Replace faulty parts.
Lines are missing. 1. Ink tanks. 1. Replace ink tanks.
Inappropriate color tones. 1. Print head. 1. Replace faulty parts.
Overlapping printing. 1. Platen unit (eject roller) 1. Replace faulty parts.
No black. 1. Ink tank. 1. Perform Deep
Cleaning (3 times)
Images / text appears
stretched. 1. Timing slit strip. 1. Clean grease from
timing slit strip,
2. Replace the carriage
board.
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