Lexmark T652 Service Manual - Page 189
Lexmark T652 Manual
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4062 Step Check Check the above sensor for proper connection. Is the above sensor connected properly? Yes Replace the sensor (mailbox empty). Go to "5-bin mailbox sensor (media bin empty) removal" on page 4-91. No Replace the connection. 3 4 Perform a print test using the output option. Does the error continue? Replace the output option. Problem solved. Sensor (toner empty) service check Step 1 Check Check the sensor (toner empty) for proper installation. Is the above component properly installed? Yes go to step 2. No Reinstall the sensor (toner empty) Go to step 3. 2 Check the sensor (toner empty) for proper operation. 1. Enter the diagnostic mode 2. Select Base sensor test 3. Observe the line item "toner" 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. 3 Check the above sensor for proper connection. Is the above sensor connected properly? Replace the sensor (toner empty). Go to "Sensor (toner empty) removal (T650, T652, T654)" on page 4-71. Replace the connection. NVRAM mismatch failure (950.00 through 950.29) service check Warning: When replacing any of the following components: • Operator panel assembly • System card assembly Only replace one component at a time. replace the required component and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more of the components listed above without a POR after installing each one or the printer will be rendered inoperable. Warning: These components can be used as a method of troubleshooting as long as the machine is booted into diagnostic mode or is operating in diagnostic mode. Once a component has been installed in a machine and powered up into user mode, it cannot be used in another machine. It must be returned to the manufacturer. Step 1 Check Check the operator panel assembly. Was the operator panel assembly recently replaced? Yes Go to step 3. No Go to step 2. Diagnostic information 2-155