Service manual

Samsung Electronics 1-3
6-4-1 White lines on letters or graphics.
■ Cause
If nozzles in print head has a probkem, white lines are marked on the print.
ÔSelf-diagnostic printingÕ will let you know if nozzles have problems.
6-4. PRINTING QUALITY
If this line is broken, it confirms that
nozzles have problems.
■ Solution
1) Run Ôprint control panelÕ to Òclean cartridgeÓ and check if nozzles have been blocked.
2) Wipe with soft cloth the contact surfaces of ink cartridge and carriage, and check if nozzles have been
cleaned properly.
3) Separate ink cartridge from carriage and combine them. Repeat it about 5 to 6 times and check if con-
nection is proper.
4) Replace ink cartridge and check whether thereÕs a problem with thehead.
5) Check if head cable is inserted well into the main circuit board and then check if nozzles have prob-
lems.
6) Check if head cable is broken or torn and then check if nozzles have problems.
7) Replace the main circuit board with a new one and check if nozzles have problems.