Lexmark T652 Service Manual - Page 160

4062 Service checks Sensor (input) service check Step 1 Check Check the sensor (input) for damage. Is the above component free from damage? Yes Go to step 2. No Replace the sensor (input). Go to "Sensor (input) removal (T650, T652, T654)" on page 4-71. 2 1. Enter the diagnostic mode 2. Select Base sensor test 4. Observe the line item "input" Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked. The sensor is working properly Go to step 2. 3 Check the above sensor for proper connection. Is the above sensor connected properly? Replace the Sensor (input). Go to "Sensor (input) removal (T650, T652, T654)" on page 4-71. Replace the connection. Sensor (fuser output) service check Step 1 Check Check the sensor (fuser output) for damage. Is the above component free from damage? Yes Go to step 2. No Replace fuser unit assembly. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. 2 1. Enter the diagnostic mode 2. Select Base sensor test 4. Observe the line item "exit" Does the display on the operator panel, change every time the sensing area of the above sensor is interrupted or blocked. The sensor is working properly Go to step 2. 3 Check the above sensor for proper connection. Is the above sensor connected properly? Replace the fuser unit assembly. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. Replace the connection. 2-126 Service Manual