Canon PIXMA MP760 Service Manual download pdf (Page 20)

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Symptom Solution Remarks

• The printer does not at all.

• Printing stops midway.

• Certain colors are not

printed.

(1) Remove the printhead and

re-install it.

(2) Carry out nozzle cleaning

on the printhead five times

with the cleaning operation,

than visually cheek the test

print for non-discharge of ink

from nozzle. (Fig. 1-2)

(3) Remove and reinstall the

printhead.

(4) Replace the appropriate

ink tank.

(5) Replace the printhead.

(6) Replace the SPCNT board

ass’y.

(7) Replace the purge unit.

Printing

Quality

Error

Blotches appear

Blank ink appear

(1) Remove and reinstall the

printhead.

(2) Carry out nozzle cleaning

on the printhead five times

with the cleaning operation,

than visually cheek the test

print for non-discharge of ink

from nozzle. (Fig. 1-2)

(3) Perform print head

refreshing, and print out

Nozzle check pattern.

Visually check the test print

for non-discharge of ink from

nozzle. (Fig. 1-2)

(4) Replace the appropriate

ink tank.

(5) Replace the printhead.

(6) Check the connection of

the carriage ribbon cable and

the SPCNT board.

(JHD1, JHD2)

(7) Replace the carriage unit.

(8) Replace the SPCNT board.

(9) Replace the purge unit.

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Canon PIXMA MP760 Service Manual Page 20

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