HP 1320 Service Manual - Page 153
Basic troubleshooting
UPC - 829160406831
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Basic troubleshooting Table 7-1. Basic troubleshooting The printer doesn't turn on. When the product is connected to a correctly grounded power source, the LEDs on the control panel do not light and the main motor does not rotate. Cause Solution No power to the printer. 1. Verify that the power outlet has the correct voltage. 2. Verify that the power cable is correctly plugged into the outlet and the printer. 3. Verify that the power switch is turned on. The power inlet/switch cable assembly is defective. Replace the power inlet/switch cable assembly. The ECU is defective. Replace the ECU (see ECU). The printer turns on, but the motor doesn't rotate. When turned on, the LEDs on the control panel light up, but the main motor does not rotate. Cause Solution The print cartridge door is open. Close the print cartridge door. Media is jammed in the paper path. Clear all media from the paper path and make sure that all sensors are working correctly. The motor cable is not connected correctly. Reconnect the motor cable. The motor is not mounted correctly in the printer Verify that the motor is connected correctly and chassis. that it rotates freely. A gear is damaged or jammed. Replace the gear assembly (see Main gear assembly/tray 2 pickup solenoid). The ECU is defective. Replace the ECU (see ECU). The main motor is defective. Replace the motor (see Main motor). The printer is unresponsive. The printer turns on and the motor rotates, but none of the control panel lights turn on, and pressing the control panel buttons has no effect. Cause Solution The control panel cable is not connected correctly. Reconnect the control panel cable. ENWW Basic troubleshooting 141