Lexmark C 750 Quick start guide

Extracted From Service Manual

Edition: June 2003
The following paragraph does not apply to any country where such provisions are inconsistent with local law:
LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or
implied warranties in certain transactions; therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the
programs described may be made at any time.
Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road,
Lexington, Kentucky 40550, U.S.A or e-mail at [e-mail]. Lexmark may use or distribute any
of the information you supply in any way it believes appropriate without incurring any obligation to you. You can purchase
additional copies of publications related to this product by calling 1-800-553-9727. In other countries, contact your point of
purchase.
Lexmark, Lexmark with diamond design, MarkNet, and Prebate are trademarks of Lexmark International, Inc., registered in
the United States and/or other countries. Optra Forms is a trademark of Lexmark International, Inc.
LEXFAX is a service mark of Lexmark International, Inc.
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Other trademarks are the property of their respective owners.
©
2003 Copyright Lexmark International, Inc.
All rights reserved.
UNITED STATES GOVERNMENT RIGHTS
This software and any accompanying documentation provided under this agreement are commercial computer
software and documentation develo
p
ed exclusivel
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at
p
rivate ex
p
ense.
U.S.A. P/N 12G9174
5060-0xx

Parts catalog 7-1
5060-0xx
7. Parts catalog
How to use this parts catalog
•SIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they are shown
on the same list. Common parts are shown by one index number. Parts peculiar to one or the
other of the assemblies are listed separately and identified by description.
•NS: (Not Shown) in the Asm–Index column indicates that the part is procurable but is not
pictured in the illustration.
•PP: (Parts Packet) in the Description column indicates the part is contained in a parts packet.
The Lexmark C750 (5060-0xx) laser printer is available in two models:
•5060-001
5060-002
The parts catalog uses these designations to identify model specific FRUs.

7-2 Service Manual
5060-0xx
Assembly 1: Covers

Parts catalog 7-3
5060-0xx
Assembly 1: Covers
Asm–
Index
Part
number Units Description
1–1 12G6410 1 Top cover assembly
2 12G6507 1 250 output flag
3 12G6506 1 Bin full sensor
4 12G6319 1 Cable, options - stacker
5 12G6409 1 Redrive cap cover assembly
6 12G6389 1 Top front support bracket
7 12G6396 1 Right rear cover
8 1 Screw, PP 12G6530
9 12G6356 1 Lower right door assembly
10 12G6393 1 Right front cover
11 3 Screw, PP 12G6309
12 12G6405 1 Front right light shield cover
13 2 Screw, PP 12G6530
14 12G6411 1 Front right handle cover assembly
15 12G6394 1 Front lower right cover
16 12G6357 1 Front cover assembly
17 12G6391 1 Paper path access door
18 2 Screw, PP 12G6309
19 12G6388 1 Front lower left cover
20 12G6412 1 Front left handle cover assembly
21 12G6404 1 Left front light shield cover
22 12G6402 1 Operator panel bezel with logos
23 12G6344 1 Operator panel assembly, low volt
23 12G6345 1 Operator panel assembly, high volt
24 12G6399 1 Front upper pivot cover
25 2 Screw, PP 12G6532
26 12G6397 1 Front access door support
NS 56P1277 1 Paper tray guide
NS 12G6380 1 Machine pad
NS 12G6491 1 Jam access door spring
NS 12G6347 1 Front hold down bellcrank

7-4 Service Manual
5060-0xx
Assembly 1.1: Covers
3
7
9
2
2
2
2
2
2
2
10
6
4
8
1
2
5
11
12

Parts catalog 7-5
5060-0xx
Assembly 1.1: Covers
Asm–
Index
Part
number Units Description
1.1–1 12G6408 1 Left upper cover assembly
2 14 Screw, PP 12G6309
3 12G6392 1 Left upper pivot cover
4 12G6485 1 Lower access jam door assembly
5 12G6398 1 Left lower pivot cover
6 12G6395 1 Cover, left lower
7 12G6400 1 Waste container door
8 12G6390 1 Rear cover
9 12G6401 1 Rear fan cover
10 12G6340 1 Fuser top duct
11 12G6358 1 Fuser bottom duct
12 12G6360 1 Fuser wall duct
NS 12G6339 1 Blank, TLI/SN label
NS 12G6510 6 Cable tie (6 in pack)
NS 12G6511 2 Cable mount
NS 12G6386 1 Duplex actuator arm
NS 12G6387 2 Ground cable
NS 12G6383 2 Fuser latch slide
NS 12G6384 2 Fuser latch slide spring
NS 56P0560 1 Rear upper guide assembly

7-6 Service Manual
5060-0xx
Assembly 2: Cartridge mounting
1
2
3
3
1
2

Parts catalog 7-7
5060-0xx
Assembly 2.0: Cartridge mounting
Asm–
Index
Part
number Units Description
2–1 Screw, PP 12G6532
2 12G6535 4 Guide assembly, left side
3 12G6536 4 Guide assembly, right side

7-8 Service Manual
5060-0xx
Assembly 3: Fuser
3
2
1

Parts catalog 7-9
5060-0xx
Assembly 3.0: Fuser
Asm–
Index
Part
Number Units Description
3–1 12G6495 1 Fuser assembly 100V 500W
1 12G6301 1 Fuser assembly 115V 500W
1 12G6302 1 Fuser assembly 220V 500W
2 12G6516 1 Fuser lamp, 100V 500W hot roll
2 12G6337 1 Fuser lamp, 115V 500W hot roll
2 12G6341 1 Fuser lamp, 220V 500W hot roll
3 12G6517 Fuser lamp, 100V 400W backup roll
3 12G6338 1 Fuser lamp, 115V 400W backup roll
3 12G6342 1 Fuser lamp, 220V 400W backup roll

7-10 Service Manual
5060-0xx
Assembly 3.1: Fuser
3
4
1
2

Parts catalog 7-11
5060-0xx
Assembly 3.1: Fuser
Asm–
Index
Part
Number Units Description
3.1–1 12G6495 1 Fuser assembly, web oiler 100V 500W
1 12G6514 1 Fuser assembly, web oiler 115V 500W
1 12G6515 1 Fuser assembly, web oiler 220V 500W
2 12G6545 1 Web oiler assembly
3 12G6338 1 Fuser lamp, 115V 400W backup roll
3 12G6342 1 Fuser lamp, 220V 400W backup roll
4 12G6337 1 Fuser lamp, 115V 500W hot roll
4 12G6341 1 Fuser lamp, 220V 500W hot roll

7-12 Service Manual
5060-0xx
Assembly 4: Fuser drive
Asm–
Index
Part
Number Units Description
4–1 56P1213 1 Fuser drive assembly
2 4 Screws PP 12G6309
3 56P1238 1 Fuser drive motor
4 Screws, motor mounting (Inc w/2,1-3)
2
1
3

Parts catalog 7-13
5060-0xx
Assembly 5: Vacuum transport belt assembly
Asm–
Index
Part
Number Units Description
5–1 12G6489 1 Vacuum transport belt assembly
2 12G6488 1 Transfer plate assembly
3 12G6303 1 Second transfer roll
NS 56P0174 1 Second transfer voltage cable

7-14 Service Manual
5060-0xx
Assembly 6: Printheads
Asm–
Index
Part
Number Units Description
6–1 12G6322 4 Printhead assembly
2 12 Screw, PP 12G6534
3 12 Screw, PP 12G6539
4 4 PSD assembly (order 4-5, thermistor card, when replacing this assembly)
5 56P1198 4 Thermistor card
6 8 Screw, PP 12G6533
3
3
2
2
4
4
4
1
1
1
1
5
56
6
6
6

Parts catalog 7-15
5060-0xx
Assembly 7: Paper feed output (redrive)
Asm–
Index
Part
number Units Description
7–1 56P0167 8 Anchor, bracket mounting
2 12G6493 2 Upper door hinge
3 2 Screw, PP 12G6533
4 12G6492 1 Redrive assembly
5 12G6355 1 Redrive door
6 12G6513 1 Lower rear door latch
7 12G6512 1 Lower front door latch
8 2 Screw, PP 12G6530
9 12G6356 1 Door assembly, lower right

7-16 Service Manual
5060-0xx
Assembly 8: Multipurpose feeder (MPF)

Parts catalog 7-17
5060-0xx
Assembly 8: Multipurpose Feeder (MPF)
Asm–
Index
Part
number Units Description
8–1 12G6452 1 MP feeder door cover
2 12G6460 1 Door hinge restraint
3 1 Screw, PP 12G6533
4 12G6453 1 Frame bias latch
5 12G6455 1 Frame bias latch cover
6 11 Screw, PP 12G6533
7 12G6454 1 Frame bias spring
8 12G6457 2 MPD support bracket cover
9 12G6456 1 Sensor mount bracket
10 12G6461 1 Paper out/low sensor
11 12G6458 2 MPF support bracket spring
12 12G6459 2 MPF support bracket
13 12G6462 1 MPF bracket assembly
14 12G6463 1 MPF drive gear
15 12G6465 1 MPF drive gear bushing
16 12G6464 1 MPF drive gear shaft
17 12G6451 1 MPF autocompensator pick assembly
18 12G6354 3 Rib housing
19 12G6447 1 Friction buckler
20 12G6346 1 Buckler housing
21 12G6450 1 MPF door assembly
NS 12G6449 1 MPF cable cover
NS 12G6448 1 MPF cable

7-18 Service Manual
5060-0xx
Assembly 9: 500-sheet integrated tray