Diagnostic aids
3-61
Step 4a: First transfer
When the latent images are developed on each Photoconductor, the high-voltage power supply sends voltage to
the 1st Transfer Rollers inside the ITU (D).
The charge difference between the developed toner image on the Photoconductor surface and the 1st Transfer
Roller causes the images to transfer to the surface of the ITU belt for each color. This takes place by a direct
surface-to-surface contact between the Photoconductors and the ITU belt.
Service tips
•
Never touch the surface of the ITU belt with your bare hand. The oil from your skin will cause a
charge differential on the surface, and toner will not stick properly. The result would be repeating
blotches of voids/light print on a page. Then the ITU belt will have to be replaced.
•
Don’t use solvents or other cleaners to clean the ITU belt surface. No matter how careful you are, the
surface will be compromised, causing scratches or a charge differential that will produce a void or
light blotch on the printed page. Then the ITU belt will need to be replaced.
Y112730-2
Содержание d-Color MF920
Страница 1: ...SERVICE MANUAL Copiatrici Copiers d Color MF920 d Color MF923 Code Y112730 2...
Страница 10: ...x Service Manual Y112730 2...
Страница 15: ...Notices and safety information xv Y112730 2...
Страница 16: ...xvi Service Manual Y112730 2...
Страница 18: ...xviii Service Manual Y112730 2...
Страница 22: ...xxii Service Manual Y112730 2...
Страница 124: ...2 80 Service Manual Y112730 2...
Страница 198: ...3 74 Service Manual Y112730 2...
Страница 203: ...Repair information 4 5 4 Remove the three screws A on the rear side of the left cover A Y112730 2...
Страница 211: ...Repair information 4 13 9 Remove the two springs D 10 Remove the two screws E on the bottom Y112730 2...
Страница 234: ...4 36 Service Manual 4 Snap the new gear onto the shaft D The installation is the same as the old gear Y112730 2...
Страница 288: ...4 90 Service Manual 6 While holding the op panel mounting assembly remove the op panel bezel cover Y112730 2...
Страница 302: ...4 104 Service Manual Y112730 2...
Страница 305: ...Locations 5 3 Interior view Y112730 2...
Страница 306: ...5 4 Service Manual Printer boards Controller Board Y112730 2...
Страница 317: ...Locations 5 15 HVPS Y112730 2...
Страница 319: ...Locations 5 17 LVPS Y112730 2...
Страница 324: ...6 2 Service Manual Y112730 2...
Страница 331: ...Index I 7 Y112730 2...
Страница 332: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 09 2010 1ST EDITION 332 Y112730 2...