Lexmark X 850 Owners Manual
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Repair information4-123 7500-XXX 9.Remove the AC drive card assembly (B). Note: Before reinstalling, ensure that all electrical connections are properly connected. P526 P6 P8 (Not used) T11 (Black wire)T12 (White wire) P2 (Not used) P1 P4 P7Connectors Harness clampB Not used White wire Black wire Rear
4-124MFP Service Manual 7500-XXX AC power input socket assembly removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear lower cover. See “Rear lower cover removal” on page 4-12. 4.Remove the top cover assembly. See “Top cover assembly removal” on page 4-5. 5.Remove the right upper cover. See “Right upper cover removal” on page 4-9. 6.Remove the three screws securing the AC power input socket assembly (A). 7.Release the harness from the clamp. 8.Remove the AC power bracket assembly (A). Warning: Before reinstalling, ensure all connectors are plugged into their proper location to prevent damage. ARear
Repair information4-125 7500-XXX AC power input socket removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear lower cover. See “Rear lower cover removal” on page 4-12. 4.Remove the three screws securing the bracket (A). 5.Disconnect the two connectors to the AC power input socket (B). 6.Remove the two screws securing the AC power input socket (B) to the bracket (A). 7.Remove the AC GFI breaker (B). Warning: Before reinstalling, ensure all connectors are plugged into their proper location to prevent damage. Rear A B
4-126MFP Service Manual 7500-XXX Finisher AC output removal 1.Remove the RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the rear motor cover. See “Rear motor cover removal” on page 4-11. 3.Remove the rear lower cover. See “Rear lower cover removal” on page 4-12. 4.Remove the printer engine card assembly. See “Printer engine card assembly removal” on page 4-117. 5.Remove the three screws securing the bracket (A). 6.Disconnect the three connectors to the finisher AC output (B). 7.Release the two hooks securing the finisher AC output (B) to the bracket (A). 8.Remove the finisher AC output (B). Warning: Before reinstalling, ensure all connectors are plugged into their proper location to prevent damage. A B Rear Hook Hook
Repair information4-127 7500-XXX RIP card chassis bracket removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Disconnect five connections from the RIP card assembly (A). 3.Remove the two screws securing the RIP card chassis bracket (B) to the frame. 4.Slide the RIP card chassis bracket (B) to the left and out of the frame. Warning: Do not drop the RIP card chassis bracket, or damage will occur. B A Connectors Connectors Connector
4-128MFP Service Manual 7500-XXX RIP card assembly removal Warning: In the event of replacement of any one of the following components: •Operator panel assembly (universal) •Operator panel controller card assembly •RIP card assembly •Interconnect card assembly Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more of the components listed above without a POR after installing each one, or the printer will be rendered inoperable. Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a machine, it cannot be used in another machine. It must be returned to the manufacturer. 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the RIP card chassis bracket. See “RIP card chassis bracket removal” on page 4-127. 3.Disconnect the eight connections from the RIP card assembly (A). 4.Remove the five screws securing the RIP card assembly (A) to the side of the RIP card chassis bracket (B). 5.Remove the six screws securing the RIP card assembly (A) to the face of the RIP card chassis bracket (B). 6.Remove the RIP card assembly (A). A B Connectors
Repair information4-129 7500-XXX Fax interface card assembly removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Disconnect the connection from the fax interface card assembly (A). 3.Remove the two screws securing the fax interface card assembly (A) to the side of the RIP card chassis bracket (B). 4.Remove the fax interface card assembly (A). A B Connector
4-130MFP Service Manual 7500-XXX Hard drive removal 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Remove the RIP card chassis bracket. See “RIP card chassis bracket removal” on page 4-127. 3.Remove the RIP card assembly. See “RIP card assembly removal” on page 4-128. Warning: Do not drop the RIP card chassis bracket, or damage will occur. 4.Remove the two connectors from the hard drive (A). 5.Remove the two screws securing the hard drive (A) to the side of the RIP card chassis bracket (B). 6.Remove or loosen the two screws securing the bracket (C) to the face of the RIP card chassis bracket (B). 7.Remove the hard drive (A). Warning: Do not drop the hard drive, or damage will occur. A B C Connectors
Repair information4-131 7500-XXX Interconnect card assembly removal Warning: In the event of replacement of any one of the following components: •Operator panel assembly (universal) •Operator panel controller card assembly •RIP card assembly •Interconnect card assembly Only replace one component at a time. Replace the required component, and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more of the components listed above without a POR after installing each one, or the printer will be rendered inoperable. Warning: Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a machine, it cannot be used in another machine. It must be returned to the manufacturer. 1.Remove the rear RIP card cover. See “Rear RIP card cover removal” on page 4-13. 2.Gently pull the interconnect card assembly (A) from the RIP card assembly (B). 3.Remove the interconnect card assembly (A). A B
4-132MFP Service Manual 7500-XXX Scanner removals Right Front Left Rear