Lexmark C782 Service Manual - Page 96
error code service check, Fuser fan main fan, VTB fan
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5061 925.02 error code service check Fuser fan (main fan) Step 1 Actions and questions Turn the power off, manually spin the fan, and check that it rotates freely. Does the fan rotate freely? Yes Go to step 2 2 Check the fuser fan cable connection to the system board JM1 for correct installation. Is the cable installed correctly? 3 Disconnect the fuser fan from JM1 on the system board, and check the voltages on JM1. Pin Fan on JM1-1 +1.6 V dc JM1-2 0 V JM1-3 +1.9 V dc JM1-4 +24 V dc JM1-5 Ground Fan off +3.3 V dc 0 V 0 V dc +24 V dc Fan disconnected Fan discon- Fan switch on nected Fan switch off +3.3 V dc +3.3 V dc 0 V 0 V 0 V +2 V dc +24 V dc +24 V dc Go to step 3 Replace the fuser fan. See "Fuser fan removal" on page 4-47. No Replace the fuser fan. See "Fuser fan removal" on page 4-47. Install the cable correctly. Replace the system board. See "System board removal" on page 4-89. Are the voltages correct? 926.01 error code service check VTB fan Step 1 Actions and questions Turn the power off, manually spin the fan, and check that it rotates freely. Does the fan rotate freely? Yes Go to step 2 2 Check the VTB fan cable connection to the system board JY1 for correct installation. Is the cable installed correctly? Go to step 3 3 Disconnect the VTB fan from JY1 on the system board, Replace the VTB and check the voltages on JY1. fan. See "Vacuum Pin Fan on Fan off Fan Fan disconnected disconnected fan switch on fan switch off transport belt (VTB) fan removal" on JY1-1 +1.6V dc +3.3 V dc +3.3 V dc +3.3 V dc page 4-97. JY1-2 0 V 0 V 0 V 0 V JY1-3 +3.1 V dc 0 V dc 0 V +2 V dc JY1-4 +24 V dc +24 V dc +24 V dc +24 V dc Are the voltages correct? No Replace the VTB fan. See "Vacuum transport belt (VTB) fan removal" on page 4-97. Install the cable correctly. Replace the system board. See "System board removal" on page 4-89. 2-54 Service Manual