Lexmark T652 Service Manual - Page 161

4062 Sensor (narrow media) service check Step 1 Check Check the sensor (narrow media) for damage. Is the above component free from damage? Yes Go to step 2. No Replace the 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 "narrow media" 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 fuser unit assembly. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. Replace the connection. Sensor (duplex input) service check Step 1 Check Check the sensor (duplex input) for damage. Is the above component free from damage? Yes Go to step 2. No Replace the sensor (duplex input). Go to "Sensor (duplex input) removal (T652, T654)" on page 4-68. 2 1. Enter the diagnostic mode 2. Select Duplex sensor tests 3. Select 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. Diagnostic information 2-127