Lexmark lexmark J110 Service Manual - Page 83

4085-001 Paper feed pick assembly does not feed, paper feed pick motor does not turn Note: A noisy or chattering motor or a motor that fails to turn can be caused by: • A defective motor • A bind in the paper feed mechanism • Defective gears • Defective engine board • Defective power supply FRU 1 Power Supply 2 Engine Board 3 Paper Feed Pick Motor Index Motor 4 Tray 1 Sensor Check Action Check the power supply. See the "Power Supply Service Check" on page 2-63 . If the power supply voltage is incorrect, replace the power supply. Disconnect (J6) from the engine board. With the power on, check the voltage between pins 6, 10, and ground. The voltage at pin 6 should be approximately +35 V dc. The voltage at pin 10 should be approximately +5 V dc. If either of these readings are incorrect, replace the engine board. Check continuity between (J2) on the RIP card and (J14) on the engine board. If correct, replace the engine board. If incorrect, go to step 3. Disconnect (J6). Check between 6 and 7 on the connector for approximately 27.8 ohms. If reading is incorrect, replace the paper feed pick motor assembly. If reading is correct, check the continuity between each 6 and 7 to the motor case. If continuity exists, replace the paper feed pick motor assembly. Check the index motor connector J16 pin 2 to ground for approximately 27 volts. If voltage is incorrect, replace the system board. If reading is correct, check the continuity. See "Index Motor Service Check" on page 2-56 . If symptom remains, go to step 4. Note: If a short exists in the paper feed motor, damage to the engine board drivers and power supply may occur. See "Tray 1 Sensor Test" on page 3-27 . If test fails, replace sensor. Diagnostic Information 2-61