Lexmark C750 Service Manual - Page 86

5060-00x Step 7 Action and questions Measure the voltage on pin 7 of the fuser DC control connector The voltage should measure approximately +3.3 V dc. Is the voltage correct? Yes Replace the fuser assembly. See "Fuser assembly removal" on page 4-31. No Replace the LVPS assembly. See "Low voltage power supply (LVPS) removal" on page 4-38. 132 Error code Cold fuser hot roll Step 1 Action and questions Measure the voltage on connector J10-11 on the engine board. The voltage should measure approximately +0.13 V dc to 0.64 V dc as the hot roll lamp turns on and off. Is the voltage correct? 2 Remove the fuser from the printer. Check continuity of the hot roll lamp by measuring between pins 1 and 2 on the AC fuser connector on the fuser assembly. Yes Replace the fuser assembly. See "Fuser assembly removal" on page 4-31. Go to step 5 No Go to step 2 Go to step 3 Is there continuity? 3 Make sure the hot roll lamp is installed correctly. Is the lamp installed correctly? 4 Carefully remove the lamp from the fuser assembly, being careful to only handle the lamp by the ceramic end pieces and not by the glass envelope. Warning: Use caution when handling the lamp, as it is easily broken. Check continuity of the hot roll lamp. Is there continuity? 5 Reinstall the fuser assembly. Watch to see if the lamps turn on and off as the lamps heat up. Do the lamps turn on and off? Go to step 6 Replace the LVPS assembly. See "Low voltage power supply (LVPS) removal" on page 4-38. Replace the fuser assembly. See "Fuser assembly removal" on page 4-31. Go to step 4 Install the hot roll lamp correctly. Replace the hot roll lamp. 2-52 Service Manual