Lexmark C736 Service Manual

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7.Select Quick Test in the Cyan menu, and press Select ().
Two pages print. You may have to print these pages several times until you get T (Top Margin) and 
Z (Skew) aligned. Do not go to step 2 until T and Z are aligned. The first page is similar to the following: 

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8.Determine the line under Fine Adjustment that is closest. If the value is beyond the Fine Adjustment scale, 
use either of the Coarse Adjustment scales.
9.Enter the number determined from the Fine Adjustment scale or the Coarse Adjustment scales on the part 
of the page for the “T” value. The current value is automatically entered on the sheet. At this point, it should 
be zero.
10.Enter the “New Cyan T value” on the operator panel using the left and...

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12.Repeat this process for skew (Z). Dont forget to subtract the T value and add the current cyan Z value to 
obtain the new skew (Z) value.
An example is shown below:
13.Continue to follow the directions on the bottom of the first page to find the Cyan Top Margin (T), the 
Skew (Z), and on the second page of the Quick Test page, the Left Margin (L), Right Margin (R), and 
Bow (P).
14.Repeat steps 2 through 11 for yellow and magenta.
Note:  Start each...

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Right bellcrank assembly removal
See “Right bellcrank assembly, with spring” on page 7-5 for the part number.
1.Remove the right cover. See “Right cover removal” on page 4-37.
2.Remove the C-clip (A).
3.Remove the right bellcrank assembly.
A 

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System board removal
See the system board part number for the model you need on page 7-9. 
Warning:  When replacing any one of the following components:
•Operator panel assembly
•System board
•Top access cover 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. 
Warning:  Be careful...

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5.Disconnect all the cables from the system board.
Warning:  Do not use tools to remove the printhead ribbon cable (B). A flat ribbon cable can be damaged 
and should be removed gently by hand. 
6.Remove the nine screws (C) from the system board.
7.Remove the system board. 

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Installation notes:
1.Place the system board in position.
Note:  Check that the mirror motor cable and the printhead cable do not rub against the edges of the 
frame.
2.Replace the nine screws (A) in the system board in the following order:
•Loosely attach the four corners (A1) in a clockwise order, beginning with the left top corner.
•Replace the USB connector screw (A2).
•Replace the top center, right center side, and left center side (A3).
•Tighten...

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4.Replace all the screws (B) from the left side of the printer, including:
•Ethernet port connector (1 screws)
•Modem shield (1 screws)
•Hard disk shield (2 screws)
•Ground screw (1 screw)
Note:  Be sure to attach the ground wire (C) to the ground screw.
5.Reconnect all the cables to the system board. Use the diagram below for a guideline.
Warning:  Be careful reconnecting the printhead ribbon cable (D). It can be damaged and should be 
handled carefully....

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System board support shield removal
See “System board support shield” on page 7-9 for the part number.
1.Remove the system board. See “System board removal” on page 4-153.
2.Remove the right cover. See “Right cover removal” on page 4-37.
3.Pull the cables through the access holes on the right side of the printer.
4.Remove the five mounting screws (A) from the outer left side of the printer. 
Note:  Make a note of the attachment of the printhead ground...

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6.Remove the five mounting screws (D) from the top and bottom of the support shield.
Note:  Only the ribbon and mirror motor cables come through the access holes in the system board 
support shield.
7.Lower and remove the support shield. Be careful not to damage the ribbon cable that routes through the 
bottom frame of the printer.
Installation notes:
1.Loosely attach the two mounting screws (A).
2.Set the system board support shield in place.
Note:  Check...