Lexmark C760 Service Manual

General information1-13
  5060-4xx
Envelope
7 ¾ Envelope 3.875 in. x 7.5 in. (98 mm 
x 191 mm)  xx    x  x  
9 Envelope 3.875 in. x 8.9 in. (98 mm x 
225.4 mm)  xx    x  x  
10 Envelope 4.125 in. x 9.5 in. (105 mm 
x 241 mm)  xx    x  x  
DL Envelope 4.33 in. x 8.66 in. (110 mm 
x 220 mm)  xx    x  x  
C5 Envelope 6.38 in. x 9.01 in. (162 mm 
x 229 mm)  xx    x  x  
B5 Envelope 6.93 in. x 9.84 in. (176 mm 
x 250 mm)  xx    x  x  
Other envelope
33.87 x 6.38 in. to 6.93 
x 9.84 in. (98.4 x 162 mm to 176...

1-14Service Manual
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Input media types and weights
Media Weight
Integrated trays
f and optional 500-sheet drawer
Paper 
b, f Xerographic or  business paper 16 to 19.9 lb bond (60 to 74.9 g/m2 grain long)
20 to 47 lb bond (75 to 176 g/m2 grain long)
Specialty papers Gloss 
book 60 to 120 lb book (88 to 176 g/m
2 grain long)
Gloss cover 60 to 65 lb cover (162 to 176 g/m
2 grain long)
Card stock - upper limit 
(grain long)
a, f  Index 90 lb (163 g/m
2)
Bristol Tag 100 lb (163 g/m
2)
Cover 65 lb...

General information1-15
  5060-4xx
Output media types and weights
2,000-Sheet drawer 
Paper 
b, f Xerographic or 
business paper 16 to 19.9 lb bond (60 to 74.9 g/m2 grain long) 
20 to 47 lb bond (75 to 176 g/m2 grain long)
Specialty papers Gloss book 60 to 120 lb book (88 to 176 g/m
2 grain long) 
Gloss cover 60 to 65 lb cover (162 to 176 g/m
2 grain long)
a For 60 to 176 g/m2 paper, grain long fibers are recommended. For papers heavier than 176 g/m2, grain shor t 
is preferred.
b Paper less than 75...

1-16Service Manual
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Finisher (Output bin, Offset Stack)
Paper 
b, fXerographic or 
business paper 16 to 19.9 lb bond (60 to 74.9 g/m2 grain long) 
20 to 47 lb bond (75 to 176 g/m2 grain long)
Specialty papers Gloss book 60 to 120 lb book (88 to 176 g/m
2 grain long)
Finisher (Staple and Hole Punch)
Paper Xerographic or  business paper 16 to 19.9 lb bond (60 to 74.9 g/m
2 grain long) 
20 to 32 lb bond (75 to 120.4 g/m2 grain long)
Specialty papers Gloss book 60 to 84.5 lb book (88 to 125 g/m...

General information1-17
  5060-4xx
Web oiler upgrade kit and replacements
The web oiler removes fuser roll contamination in machines which run a large number 
of vinyl or dual web labels. The web oiler works with all media types and enables the 
prolonged use of labels without sacrificing fuser life.
Web oiler fuser life : 200,000
Web oiler life: 100,000 pages
Ava i la b il ity: Order the web oiler upgrade kit.
Upgrade kit
This kit allows you to upgrade your current printer.
For replacements for the...

1-18Service Manual
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Acronyms
BLDC Brushless DC Motor
BOR Black Only Retract
CCyan
CSU    Customer Setup
DIMM Dual Inline Memory Module
DRAM  Dynamic Random Access Memory
EDO Enhanced Data Out
EP     Electrophotographic Process
EPROM Erasable Programmable Read-Only Memory
ESD    Electrostatic Discharge
FRU    Field Replaceable Unit
GB Gigabyte
HCIT High-Capacity Input Tray
HCOF High-Capacity Output Finisher
HVPS  High Voltage Power Supply
ITU Image Transfer Unit
KBlack
LASER  Light...

Diagnostic information2-1
  5060-4xx
2.  Diagnostic information
Start
CAUTION:  Unplug power cord from the printer or electrical outlet before you connect or disconnect any cable or 
electronic board or assembly for personal safety and to prevent damage to the printer. Disconnect any 
connections between the printer and PCs/peripherals. The printer weighs 47.7 kg (105 lb.) and requires at 
least two people to lift it safely. Make sure your fingers are not under the printer when you lift or set the 
pr...

2-2Ser vice Manual
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POR (Power-On Reset) sequence
The following is an example of the events that occur during the POR sequence for the base machine with no 
paper handling options installed.
1.Power the machine on.
2.+5V LED (Power ON) on the system board comes on.
3.Operator Panel LED comes on solid.
4.All diamonds appear on the display.
5.While loading code, dots scroll across the display.
6.The following is an example of the screen that displays after the code is loaded.
7.Performing Self...

Diagnostic information2-3
  5060-4xx
Symptom tables
Symptom table - base printer
Symptom Action
Fuser fan fails to run or is noisy Go to  “925 error code” on page 2-85.
RIP fan fails to run or is noisy Go to  “927 error code” on page 2-86.
VTB fan fails to run or is noisy Go to  “926 error code” on page 2-85.
Excessive fuser drive motor assembly noise Go to  “Excessive fuser drive motor assembly 
noise” on page 2-124 .
Machine inoperative: Fans don’t turn, engine not on, 
lights not on, and none of the...

2-4Ser vice Manual
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Symptom table - 500-sheet drawer option
Symptom table - HCIT 2000-sheet option
Symptom table - output expander option
Print quality: Poor color alignment Go to “Poor color alignment” on page 2-136.
Print quality: Toner on the back of the page Go to  “Toner is on the back of the printed page” on 
page 2-139 .
Print quality: Toner smears or rubs off the page Go to  “Toner smears or rubs off the page with no 
error code displayed” on page 2-138 .
Print quality: Multiple...