Panasonic DP-C305 - Printed Copy Quality Problems; Printed Image; Copy Image Quality Adjustment; Monochrome Image Quality Adjustment

417
DP-C405/C305/C265
FEB 2008Ver. 1.1
4.3. Printed Copy Quality Problems
4.3.1. Printed Image
4.3.2. Copy Image Quality Adjustment
4.3.2.1. Monochrome Image Quality Adjustment
Mode Adjustment F-Code Function
Mono
Copy
Density Adj.
Highlight
Text F6-220 Density Adjustment of Highlighted area
* Perform after completing the printer and scanner
adjustment
* Not used for reducing the density compensation
* Adjust according to customer's needs
Default: 0 : -32 => 31 + (Lighter to Darker)
Text mode: Useful for Newspapers, Tracing Paper, etc
T/P mode: Useful for Maps, 1-Color, 2-Color
Photo mode: Useful for Photos
T/P F6-221
Photo F6-222
-32 - 31
0 (default)
14 44.0
18 28.3
18 56.5
21 66.0
28 88.0
30 94.2
-- 148
-- 986
OK
Not OK
Horizontal Line (Front to Rear),
Vertical Line (Feed direction), Cyclical
Stripes or Dots on the Printed Image
Vertical Stripe
Check: OPC Drum; Charge/Developer
Clean: IT Belt, STR Unit, Cleaning Unit,
LSU/Scanner, Glass/Mirror/Lens
Horizontal Stripe (Cyclical)
- Check the periodic pitch.
- Clean the appropriated parts.
- Replace the inoperative parts/unit.
Print Test Pattern
Check the Image
Print Test Pattern
END
Check/Clean/
Replace
Diameter
(mm)
Pitch
(mm)
1. Gently clean the soiled area only as
described below:
a) Clean the Cleaning Unit with a Dry Soft
cloth; carefully removing paper powder,
pieces of paper.
b) Clean the IT Belt & the STR Unit with
a Dry Soft cloth; carefully removing the
Toner first, and then cleaning with a Soft
cloth saturated with Alcohol.
2. If the problem is not resolved, then replace
the inoperative Part/Unit.
Test Pattern F1 Mode
F1-24/25/26/27: Y/M/C/BK Halftone (2x2dots)
F1-36 : BK Solid Patch A3/LDR
F1-37 : BK by YMC Halftone Patch A3/LDR
Charge Roller
Magnet Roller
FTR Roller
STR Bias Roller
STR Roller
OPC Drum
Fuser Belt
IT Belt
Caution: