When assembling the upper housing, put the hooks in the upper housing on the catching holes at the rear side of the lower case at first, then close the housing.

Mount the Panel assembly onto the upper housing before installing the upper housing assembly.

Sheet, Release, Cap can be assembled after the upper housing assembly is installed.

4.2.5 C229MAIN Board Removal


Before disassembling, assembling or adjusting the printer, disconnect the power supply cable from the AC power socket. Failure to do so might cause personal injury.

Do not touch the heat sink attached to the switching FET (Q1) on the power supply board right after power off, as it may be very hot. Never touch the heat sink attached to the switching FET (Ql) while The AC power cable is connected to the AC outlet, as it is not electrically isolated.

1. Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, knob and tractor unit. (See Section 4.2.3.)

2. Remove the upper housing. (See Section 4.2.4.)

3. Remove 5 CBS (M3 x 4) screws and 3 CBB (3 x 12) screws securing the shield cover to the printer mechanism and lower housing. Then remove the shield cover.

4. Disconnect the harnesses from the connectors CN3, CN4, CN5, CN6, CN7, CN8, CN9, CN10, CN11 and CN12 on the C229MAIN board.

5. Remove 2 CBS (M3 x 12) screws securing the COVER,CONNECTOR,UPPER to the I/F GROUNDING PLATE.

6. Remove 6 CBB (3 x 12) screws securing C229MAIN Board to the lower case.


8. Remove 2 CP (M3 x 8) screws securing the I/F GROUNDING PLATE to the C229MAIN board. Then remove the I/F GROUNDING PLATE.


M Be careful with the edges of the shield plate, as they are very sharp.

M Be sure to match the connector colors with each other. However, the yellow harness must be connected to CN10, and the blue harness must be connected to CN11.

M The red line sides of the harnesses for CN3, CN8 and CN9 must be set to No. 1 pin side.


After replacing the C229MAIN Board, perform the Default setting and Bid adjustment to store the new data into the EEPROM on the main board. (Refer to Chapter 5.)


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