Lexmark C782 Service Manual - Page 202
Base Sensor Test, Caution
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5061 BASE SENSOR TEST Use the Base Sensor Test to determine that the sensors located inside the printer are operating correctly. The following sensors can be checked using this test: Input-In-Line Media Clear Input-S2 Media Clear Fuser Exit Media Clear NarrowMedia Media Clear K TMC Sensor Not Closed (black) C TMC Sensor Not Closed (cyan) M TMC Sensor Not Closed (magenta) Y TMC Sensor Not Closed (yellow) See "Printer sensors" on page 5-3 for locations for these sensors. See "Cartridge contact assembly pin locations (cyan, magenta and yellow)" on page 5-4 or "Cartridge contact assembly pin locations (black)" on page 5-5. CAUTION These sensors are near high voltage terminals to the print cartridge. Use a nonconducting item to toggle these switches and not your hand. To run the Base Sensor Test. 1. Select Base Sensor Test from BASE SENSOR TEST in the Diagnostics mode. 2. Select the sensor to test. Open, Clear, Closed, or Not Closed may be displayed, depending on the sensor. 3. Manually toggle the sensors by hand to verify that each sensor switches from open to closed. 3-24 Service Manual