Lexmark C750 Service Manual - Page 79
Lexmark C750 Manual
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5060-00x Step 3 Action and questions Check for continuity between pins 1 and 2 on the AC fuser connector located on the fuser assembly. Yes Replace the LVPS assembly. See "Low voltage power supply (LVPS) removal" on page 4-38. No Replace the fuser assembly. See "Fuser assembly removal" on page 4-31. Is there continuity? 121 Error code An incorrect fuser backup roll lamp is installed. CAUTION: Make sure the lamp is cool before removing it from the assembly. Step 1 Action and questions Is the correct fuser assembly installed in the printer? Yes Go to step 2 No Install the correct fuser assembly. See "Fuser assembly removal" on page 4-31. Install the correct fuser backup lamp. Replace the fuser assembly. See "Fuser assembly removal" on page 4-31. 2 3 Is the correct fuser backup roll lamp installed in the fuser assembly? Check for continuity between pins 2 and 5 on the AC fuser connector located on the fuser assembly. Go to step 3 Replace the LVPS assembly. See "Low voltage power supply (LVPS) removal" on page 4-38. Do you have continuity? Diagnostic information 2-45