4-96 Service Manual
7510
Replacement warning: When replacing the printhead assembly, perform the color registration (RegCon) setup
and adjustment. See “Color registration (RegCon)” on page 4-257.
Transfer belt waste toner auger assembly removal
1. Remove the transfer belt unit assembly. See “Transfer belt unit assembly removal” on page 4-16.
2. Remove the two screws securing the transfer belt waste toner auger assembly (A).
3. Detach the bushing (B) from the transfer belt waste toner auger assembly (A).
4. Move the transfer belt waste toner auger assembly (A) toward the rear of the machine.
5. Remove the transfer belt waste toner auger assembly (A) from the machine.
K developer / transport drive motor assembly removal
1. Remove the duplex unit assembly. See “Duplex unit assembly removal” on page 4-10.
2. Remove the fuser unit assembly. See “Duplex controller card assembly removal” on page 4-14.
3. Remove the rear cover assembly. See “Rear cover assembly removal” on page 4-5.
4. Remove the rear left middle cover. See “Rear left middle cover removal” on page 4-6.
5. Remove the MPF feed unit assembly. See “MPF feed unit assembly removal” on page 4-8.
6. Remove the rear upper cooling fan bracket assembly. See “Rear upper cooling fan bracket assembly
removal” on page 4-102.
7. Remove the developer / transfer roll HVPS card assembly. See “Developer / transfer roll HVPS card assembly
removal” on page 4-103.
8. Remove the 24V LVPS card bracket assembly. See “24V LVPS card bracket assembly removal” on
page 4-85.
9. Remove the CMYK transfer HVPS card assembly. See “CMYK transfer HVPS card assembly removal” on
page 4-94.
10. Remove the screw securing the bracket (A) to the machine.
11. Remove the bracket (A).
12. Disconnect the four connectors from the K developer transport drive motor assembly (B).
13. Release the harnesses from the clamps.
14. Release the frame clamp from the K developer transport drive motor assembly (B).
15. Remove the five screws securing the K developer transport drive motor assembly (B) to the machine.
Warning: The K developer transport drive motor assembly (B) may be difficult to remove; ensure that none of
the harnesses become damaged.
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