Removing the Panel Board Assembly
1. Remove the printer cover and ribbon cartridge. Refer to Section 4.2.1. 2. Release the left clips for the panel board assembly by pushing them from the cutout located on side front of the upper housing assembly. 3. Release FFC flexible flat cable by pulling the lock cover for CN1, and then disconnect the FFC for CN1 and connector CN2 from the C165 PNL board assembly. 4. Remove the panel board assembly from the upper housing assembly. M Before disconnecting the FFC from CN1, slide the lock...
Disassembly and Assembly of CSF Bin
This section describes procedure for disassembling and assembling the operational cut sheet feeder. In general, you can install a component in the CSF simply by reversing the procedure for removing. Therefore, this section dose not describe assembly procedures in most cases. If necessary, special notes on assembling a component are given at the end of description of each procedure. 4.2.10.1 Disassembling the Right Side Block 1. Remove the CFS gear cover by pushing and releasing the 4 clips in...
Removing the HP Sensor
1. Remove the printer cover, ribbon cartridge, front edge guide and front cover. Refer to Section 4.2.1. 2. Disconnect the connector cable for the HP sensor. 3. Remove the HP sensor by pushing up and releasing the 2 clips at the bottom of the HP sensor from the front paper entrance. Notice the direction for mounting the HP sensor. Refer to the following figure.
Printer Mechanism
The printer mechanism of this printer consists of following several unit The printhead prints the dots on the paper via ink ribbon by printing data from the control circuit. This mechanism consists of carriage unit, carriage motor CR Motor , timing belt, driven pulley, CR guide shaft and etc. The carriage unit carries the printhead and move along the CR guide shaft between left end and right end of the printable area by this mechanism. The platen gap the gap between platen and printhead are...
TPE Level Reset
This section describes the procedure to reset the TPE top paper end level. This operation is required when the PW sensor assembly is replaced, and if it is not performed, the printer does not recognize that the PW sensor has been replaced, thus, limiting the ability of the new sensor to operate. This operation can be performed only from the Setting Diskette. After this operation, the reset value for the TPE LEVEL is printed out automatically. Check that the reset value is FF. 1. Insert the...
Preparation for Disassembly the Printer
1. Remove the following belonging parts from the printer Front edge guide assembly, Front cover, Bottom cover, Rear edge guide assembly, Printer cover, Paper eject assembly, _Front rear tractor assembly, Ribbon cartridge Remove the paper eject cover and the front rear tractor assembly by pushing to release the hooks at both sides. When remount them, be sure the hooks on the projecting parts. Figure 4-2. Belonging parts Disassembly
Removing the Platen Assembly
1. Remove the printer cover, ribbon cartridge and platen knob. Refer to Section 4.2.1. 2. Set the release lever to pull tractor feed mode. 3. Release both locks for the left and right bushing 8mm by pushing the lever holder for the bushings outside, and then pulling the holder lever forward. Figure 4-10. Releasing the Locks for the Bushings Slide the platen assembly to the right, and move the printhead to the right edge. Pull the left edge of the platen assembly upward by tilting it backward,...
Unit Level Troubleshooting
You may be able to identify the defective unit just from the symptom displayed. The table below provides the symptoms for a number of failures. Once you identify the problem, refer to the flowchart listed in the right-hand column of the table to determine the cause of the problem. Table 3-6. Symptoms and Problem Descriptions Symptom Problem Description Flowchart No. Symptom Problem Description Flowchart No. Carriage dose not move at all. When the printer is powered on, the CR moves away from...
Removing the PW Sensor Assembly
1. Remove the printer cover and ribbon cartridge. Refer to Section 4.2.1. 2. Remove the CB screw 2.5x5 securing the PW sensor to the ribbon mask holder. 3. Release three clips of CR cover securing it to CR assembly from the bottom of CR Assembly, and pick up the cover a little. 4. Remove the FFC from the PW sensor connector, mounted onto the CR cover. 5. Remove the PW sensor assembly along with the CR cover by pushing and releasing a clip for the CR cover, as shown in the following figure....
Removing the Printer Mechanism
1. Remove the printer cover, the rear front edge guide assemblies, front cover, paper eject assembly, and rear tractor unit. Refer to Section 4.2.1. 2. Remove the panel board assembly. Refer to Section 4.2.2. 3. Remove the upper housing assembly. Refer to Section 4.2.7. 4. Remove three CBS screws 3 x 4 securing the upper shield plate to the printer mechanism and the upper l F grounding plate on the main board assembly. 5. Remove four printer mechanism mounting screws securing the printer...
Repairing C Main Board Assembly
This section provides instructions for repairing C244 MAIN board assembly. It describes various problem, symptoms, likely cases and solutions. The check points columns provide proper waveforms, resistance values and other information for each component of C244 MAIN. This information is necessary only for servicers who repair to the component level. Servicers who repair to the unit level including all servicers in the U.S. can ignore this section. Table 3-10. Repairing C244 MAIN Board Assembly...
Control Circuit
The control circuit consists of C244MAIN control board and the operation panel board. 2.1.3.1 Overview of Control Circuit Operation This printer's control circuit includes a TMP96C141BF that ran at 17.20MHz, an E05B50 gate array, a 2Mbit PROM or 2M 4Mbit Flash-ROM , a 1 Mbit 4Mbit PS-RAM or SRAM , a serial EEPROM or parallel EEPROM and other circuits. This control circuit oversees control of all the components in the printer. The following chart shows the control circuit block diagram. Figure...
Disassembly And Assembly
This section describes procedures for disassembling and assembling the main components of the printer. When the procedure for installing a components is simply the reverse of removing the component, this chapter dose not describe the assembly procedure. If necessary, special notes on assembling or adjusting a component are given at the end of description of each procedure. Be sure to follow the instructions in these notes. Exploded diagrams in the Appendix shows how the components fit together....
Platen Gap Adjustment
If you have rotated or reassembled the rear CR guide shaft or parallelism adjustment bushing, or if printing is too light or too dark, even at the proper PG lever position, perform this adjustment at 3 positions left end column, center column and right end column. 1. Remove the printhead from the CR assembly once. Refer to Chapter 2. Remove the ribbon mask from the ribbon mask holder using tweezers, as shown in the following figure. 3. Attach the printhead to the CR assembly again, tightening...
Disassembly and Assembly of CSF Bin 1
4.2.11.1 Disassembling the Right Side Block 1. Remove the gear train cover by releasing the four clips shown in the following figure. Figure 4-46. Removing the Gear Train Cover Figure 4-46. Removing the Gear Train Cover CSF Transmission Combination Gear 25 11 Gau9eSprin9 White Gear 22 4.2.11.2 Disassembling the Paper Support Block Assembly 1. Remove the E-ring fixing the paper feed roller shaft to the right CSF frame. 2. Remove two CTBS 3 x 8 screws securing the paper support shaft to both...