Minolta Di620, Manual, Page: 299 / 466

T-84
1155SBT050307A
7) Blank Streaks or Bands
1155SBT050308A
8) Void Areas
Section Step Check Item Result Action
Engine
1 Is the PC Drum surface scratched or dirty? YES Clean or change the PC
Drum.
2 Are the PC Drum Paper Separator Fingers
dirty or deformed? YES Clean or change the sepa-
rator fingers.
3 Are the Comb Electrode and grid mesh dirty? YES Clean or change the PC
Drum Charge Corona.
Check the toner suction
mechanism for operation.
4 Is the Drum Charge Corona Wire Cleaner at
the home position? NO Check the corona wire
cleaning mechanism.
5 Is the Image Transfer Corona wire dirty? YES Clean or change the Image
Transfer Corona.
6 Is the Image Transfer Corona Wire Cleaner at
the home position? NO Check the corona wire
cleaning mechanism.
7 Is the Upper Fusing Roller dirty or scratched? YES Clean or change the Upper
Fusing Roller.
8 Are the Upper Paper Separator Fingers dirty
or scratched? YES Clean or change the Upper
Paper Separator Fingers.
9 Is the Db plugged with caked toner or foreign
matter? YES Remove foreign matter.
Change the developer.
10 Is the window on the underside of the PH
dirty? YES Clean the window.
11 Is the light path between PH to PC Drum dirty
with dust? YES Remove the dust.
Memory
1 Select “Tech. Rep. Mode,” “Function,” and
“Image Memory,” in that order. Does “NG”
appear when “Input Image” is then run? YES Change PWB-B.
2 Select “Tech. Rep. Mode,” “Function,” and
“Image Memory,” in that order. Does “NG”
appear when “I.R. Mem. Prn” is then
run?
YES Change PWB-B.
Section Step Check Item Result Action
Engine
1 Is the image improved by loading new paper? YES Change the copy paper
and instruct the user in
how to store paper.
2 Is toner uniformly attracted onto the Sleeve
Roller? NO Check the Db value and
amount of developer, and
check the developer trans-
port mechanism for opera-
tion.
3 Is the image improved by turning the Paper
Separator Corona Output Fine Adjustment
Switches in the direction of a smaller setting?
(See SWITCHES ON PWBs, TECH. REP.
SETTINGS.) NO Clean or change the Paper
Separator Corona wire.
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