Lexmark C736 Service Manual

General information1-11
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Input and output sizes and types
Media Sizes
Primary 550-sheet tray
Multipurpose feeder
Optional 550-sheet tray
Optional Speciality 
Media
Optional 2000-sheet
feeder (HCIT)
Duplex
Paper sizes
A4 210 x 297 mm✓✓✓✓✓✓
A5 148 x 210 mm✓✓✓✓ ✓
A6 105 x 148 mm✓✓
ISO B5 176 x 250 mm
a ✓✓✓✓ ✓
JIS B5 182 x 257 mm✓✓✓✓ ✓
Officio (Mexico) 216 x 340 mm✓✓✓✓ ✓
Letter 8.5 x 11 in.✓✓✓✓✓✓
Legal 8.5 x 14 in.✓✓✓✓✓✓
3 x 5
1 ✓✓
4 x 5
1 ✓✓
Statement 5.5 x 8.5 in.✓✓✓
Executive...

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Envelopes
C6 Envelope 114 x 162 mm
d✓✓
B6 Envelope 125 x 176 mm
d✓✓
C65 Envelope 114 x 229 mm
d✓✓
C5 Envelope 162 x 229 mm✓✓
B5 Envelope 176 x 250 mm✓✓
DL Envelope 110 x 220 mm✓✓
6 3/4 Envelope 3.4 x 6.5 in
d ✓✓
7 3/4
 Envelope 3.4 x 7.5 in ✓✓
9 Envelope 3.9
 x 8.9 in✓✓
10 Envelope 4.13
 x 9.5 in✓✓
11 Envelope 4.5 x 10.4 in
d ✓✓
12 Envelope 4.8 x 11 in
d ✓✓
aThese sizes are accessible using Universal Size setting.
b Lower feed reliability may be encountered...

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Paper guidelines
Paper characteristics
The following paper characteristics affect print quality and reliability. Consider these characteristics when 
evaluating new paper stock.
Weight—The printer can automatically feed paper weights from 60 to 162l7 g/m
2 (16 to 43 lb bond) grain long. 
Paper lighter than 60 g/m2 (16 lb) might not be stiff enough to feed properly, causing jams. For best 
performance, use 75 g/m2 (20 lb bond) grain long paper. For...

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Grain direction—Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long, 
running the length of the paper, or grain short, running the width of the paper. For 60 to 135 g/m2 (16 to 36 lb 
bond) paper, grain long paper is recommended. For papers heavier than 135 g/m2, grain short is recommended.
Fiber content—Most high-quality xerographic paper is made from 100% chemically treated pulped wood. This 
content provides...

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Storing paper
Use these paper storage guidelines to help avoid jams and uneven print quality:
•For best results, store paper where the temperature is 21°C (70°F) and the relative humidity is 40%. Most 
label manufacturers recommend printing in a temperature range of 18 to 24°C (65 to 75°F) with relative 
humidity between 40 and 60%.
•Store paper in cartons when possible, on a pallet or shelf, rather than on the floor.
•Store individual packages on a...

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MPF Multipurpose Feeder
NVRAM  Nonvolatile Random Access Memory
PC     Photoconductor
pel Picture element (pixel)
POR Power-On Reset
POST  Power-On Self Test
RIP Raster Imaging Processor
SDRAM Synchronous Dual Random Access Memory
V ac Volts alternating current
V dc Volts direct current
YYellow 

Diagnostic information2-1
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2.  Diagnostic information
Start
Use the service error code, user status message, user error message, symptom table, service checks, and 
diagnostic aids in this chapter to determine the corrective action necessary to repair a malfunctioning printer. 
They will lead you to solutions or service checks, including use of various tests.
Symptom tables
If your printer completes the “Power-on self test (POST) sequence” on page 2-4 without an error, and you...

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Operator panel and menus
Operator panel
Buttons and light description
Button or light Function
Display The display shows messages and pictures that communicate the status of the 
printer.
Select The  button functions as a select button. Press this button to:
• Open a menu and display the first item in the menu (called a menu item).
• Open a menu item and display the default setting.
• Save the displayed menu item as the new user default setting. The printer...

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Administrative menus
Press Menu ( ) to enter the Administrative menus.
Note:  Some menu items may not be available based on the printer model or the options installed. Back Press to return to the previous screen.
Note: This button is only active if   appears on the top left of the screen.
USB direct port Insert a USB flash drive to send data to the printer.
Numeric keypad Consists of the numbers 0–9, a backspace button, and a pound (#) button. Button...

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Power-on self test (POST) sequence
When you turn the printer on, it performs a Power-On Self Test. Check for correct POST functioning of the base 
printer by observing the following:
1.The LED turns on.
2.The main fan turns on.
3.The operator panel turns on.
4.A partial row of pixels appears.
5.The operator panel display clears.
6.Another row of pixels appears.
7.The operator panel display clears again.
8.The operator panel displays system information. For...