Canon MultiPASS C755 Service Manual - Page 123

Ink Check, 2.8 Printer test - troubleshooting

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MultiPASS C755 Chapter 3: Maintenance & Service 7.2.8 Printer test Press key "8" on the keypad in the test mode menu, and select Printer test. After that, select "1." When this function is selected, the printer scans the carriage and detects the presence/absence of ink. It then prints the results. The normal use of the ink sensor can be checked by using this function. (1) Equip the the BJ cartridge with an empty ink cartridge. (2) Print out using this function. (3) Check that the value for "ExisInk" is "0," the proper value for empty ink. If the value displayed for the empty ink under "ExisInk" is "1," perform the following troubleshooting procedures. (1) Check the connection between the ink sensor and the PCNT board. (2) Replace the ink sensor. (3) Replace the PCNT board. Magenta ink tank Yellow ink tank Cyan ink tank Black ink tank ExistInkY=1 EsistInkM=1 ExistInkc=1 ExistInkm=1 ExistInkc=1 ExistInkK=1 03DF,03DF,03EF,0309,0309,033F Photo Cyan ink tank Photo Magenta ink tank Figure 3-34 Ink Check NOTE Tests 2-5 are not used in the PRINTER test in the field. 3-72

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3-72
MultiPASS C755
Chapter 3: Maintenance & Service
7.2.8 Printer test
Press key
“8”
on the keypad in the test mode menu, and select Printer test.
After that, select
“1.”
When this function is selected, the printer scans the carriage and detects the presence/absence of ink. It
then prints the results.
The normal use of the ink sensor can be checked by using this function.
(1) Equip the the BJ cartridge with an empty ink cartridge.
(2) Print out using this function.
(3) Check that the value for
“ExisInk”
is
“0,”
the proper value for empty ink.
If the value displayed for the empty ink under
“ExisInk”
is
“1,”
perform the following troubleshooting
procedures.
(1) Check the connection between the ink sensor and the PCNT board.
(2) Replace the ink sensor.
(3) Replace the PCNT board.
ExistInkY=1 EsistInkM=1 ExistInkc=1 ExistInkm=1 ExistInkc=1 ExistInkK=1
03DF,03DF,03EF,0309,0309,033F
Photo Cyan ink tank
Photo Magenta ink tank
Black ink tank
Magenta ink tank
Cyan ink tank
Yellow ink tank
Figure 3-34 Ink Check
Tests 2-5 are not used in the PRINTER test in the field.
NOTE