Lexmark 2390 003 - B/W Dot-matrix Printer Service Manual page 61

23 series
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FRU
1
Printhead
Action
Continuity Table
The correct resistance is:
2.8 to 3.8 ohms (238X) or 7 to 15 ohms (239X).
238X
CP9-10 & CP9-12 (Dot1)
CP9- 6 & CP9- 4 (Dot2)
CP9-17 & CP9-14 (Dot3)
CP9- 7 & CP9- 3 (Dot4)
CP9-15 & CP9-11 (Dot5)
CP9- 1 & CP9- 5 (Dot6)
CP9-18 & CP9-13 (Dot7)
CP9- 2 & CP9- 8 (Dot8)
CP9-16 & CP9- 9 (Dot9)
239X
CP8-10 & CP8-13 (Dot1)
CP8- 8 & CP8- 7 (Dot2)
CP8-12 & CP8-13 (Dot3)
CP8- 6 & CP8- 7 (Dot4)
CP8-14 & CP8-11 (Dot5)
CP8- 4 & CP8- 7 (Dot6)
CP8-16 & CP8-11 (Dot7)
CP8- 2 & CP8- 9 (Dot8)
CP8-18 & CP8-11 (Dot9)
CP8- 1 & CP8- 9 (Dot10)
CP8-17 & CP9-10 (Dot11)
CP8- 3 & CP8- 9 (Dot12)
CP8-15 & CP9-10 (Dot13)
CP8- 5 & CP9- 8 (Dot14)
CP9-16 & CP9-12 (Dot15)
CP9- 4 & CP9- 8 (Dot16)
CP9-17 & CP9-12 (Dot17)
CP9- 2 & CP9- 8 (Dot18)
CP9-15 & CP9-12 (Dot19)
CP9- 1 & CP9- 6 (Dot20)
CP9-13 & CP9-14 (Dot21)
CP9- 3 & CP9- 6 (Dot22)
CP9-11 & CP9-14 (Dot23)
CP9- 5 & CP9- 6 (Dot24)
If the problem is not missing or extra dots or
lines, do the following:
• Make sure the printhead is securely
installed in the carrier.
• Perform the Printhead-to-Platen Gap
adjustment.
Diagnostic Information 2-37

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