Epson Stylus Pro 3800 Service Manual page 83

Epson Stylus Pro 3800/3800C/3850/3880/3885/3890
Symptom
Ink smear (backside) Paper is curled or creased.
The paper is contaminated by ink smear in the paper feed path.
The waste ink pads for borderless printing are not securely attached and
contaminating paper.
Horizontal banding Paper setting made in the printer driver is wrong.
There is something wrong with paper feeding.
The print head has not been adjusted properly.
The PF belt's tension is not proper.
Vertical banding (partly) There is something wrong with the carriage unit movement.
TROUBLE SHOOTING
Description
Remedies for Print Quality Troubles
Remedy
Change the paper with a normal one.
Check the platen and PF roller for ink smudges, and clean them if any dirt is
observed.
If the PAPER SIZE CHECK in the PRINTER SETUP menu has been
C A U T I O N
set to OFF, the printer carry out a required job even if the paper size
setting does not match with the loaded paper. The printer will print on
the platen if the loaded paper is smaller than the image size. If not
necessary, change the setting to ON.
Check the waste ink pads (POROUS PAD, INK WASTE BOX, RIGHT/LEFT) and
reattach them correctly.
Correct the paper setting.
Carry out the PF adjustment.
See Chapter 5 "ADJUSTMENT"..
Check the PF scale (SCALE, PF) for any dirt, and clean it if any dirt is observed.
Check the PF encoder (BOARD ASSY., ENCODER, PF) for scratch, dirt, and
clean it if any dirt is observed.
Replace the PF encoder (BOARD ASSY., ENCODER, PF).
See 4.3.6.2 ENCODER, PF, ASSY. on page 128.
Carry out the Print Head Slant Adjustment (PF) and the Print Head Slant
Adjustment (CR). See Chapter 5 "ADJUSTMENT".
Carry out the PF Timing Belt Tension Adjustment.
See Chapter 5 "ADJUSTMENT".
Check the CR scale (SCALE, CR) for attachment condition, scratch and dirt, and
fix any abnormality.
Check the CR timing belt for scratch and foreign substances, and fix any
abnormality.
Check the carriage shaft for foreign substances, and remove them if any.
Check that the carriage shaft and the contact points between the carriage unit and
the main frame are properly lubricated.
Check the position of the FFC holder of the ink tube, and correct it if it is not
positioned as specified. See Chapter 4 "DISASSEMBLY & ASSEMBLY".
Revision C
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