Feed Roller Paper
When disengaging the ASF transmission ratchet from the paper pickup roller unit, remove the ratchet to prevent it from hitting the spur gear 24 mm as shown in the following figure. Figure 3-26. Removing the Paper Pickup Roller Unit
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The C172 MAIN board shield plate has sharp edges, so take care in handling them. Take care in handling the lithium battery, as described in Section 3.1.1. Replace the control panel harness, and then remove the main controller. Figure 3-6. Removing the C172 MAIN Board Figure 3-6. Removing the C172 MAIN Board 3.2.4 Power Supply Unit C172 PSB PSE Board Removal 1. Remove the upper housing. See Section 3.2.1. 2. Remove the printer mechanism. See Section 3.2.2. 3. Disconnect the power cable from...
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4.1.6 Uni-D Unidirectional Printing Alignment Adjustment The unidirectional alignment is required when the printer mechanism, main board, or printhead board is replaced, or when the carriage mechanism is disassembled. Performing this adjustment sets a compensation value to correct for deviations in the print position. This deviation can be caused by the speed of printing, by tolerances in the mechanical components, and by differences in print timing between odd- and even-numbered lines in...
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A thermistor is attached to the black ink printhead driver board to monitor temperature, using thermistor resistance values at 25 C or 77 F, approximately 10 KW . The CPU changes the printhead drive signal's pulse width charge pulse width based on the temperature level. A mechanical switch DE disengage sensor is built into the printer mechanism to determine whether the disengage gear is on the PF paper feed side or the pump side. A CLOSE condition from this sensor indicates that the disengage...