Paper Feed Motor Replacing; Cr Motor Replacing - SNBC BTP-M300 Service Manual

5.1.4 Paper feed motor replacing

1) Turn off the power.
2) Disassemble the printer cover after print head cooling down with reference to section 4.2.1;
3) Pull out the paper feed motor cable from main control board with moderate force.
4) Remove the two screws (M3X8) with cross screwdriver and take off the paper feed motor.
5) Install a new paper feed motor in the reverse steps.
Caution:
While disassembling the locking frame of printer, the force must be moderate to avoid damaging the
cover of printer;
Please do not drag the connecting cable while pulling the cable out of main control board to avoid
breaking the cable connector;
Please make sure all the cables of paper feed motor connect to their sockets firmly;
Please avoid squeezing the cable in reassembly;
In reassembling the paper feed motor, please fix all screws firmly.

5.1.5 CR motor replacing

1) Turn off the power.
2) Disassemble the printer cover after print head cooling down with reference to section 4.2.1.
3) Pull out the cables of CR motor, HP sensor and print head from the main control board.
4) Disassemble the transmission module with reference to section 4.2.6.
5) Remove the two ST2.9X6 screws and take off the gear dust proof cover as shown in the figure.
6) Remove the two M3X8 screws and take off the CR motor in the arrow direction as shown in the figure.
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BTP-M300 Service Manual