Service manual

Confidential BTP-M280 Service Manual
- 30 -
 Please avoid crushing the cable in reassembly.
 In reassembling the CR motor, please fix all screws firmly.
5.1.6 Upper mark sensor replacing
1) Turn off the power.
2) Disassemble the printer cover according to steps in 4.2.1, then detach the mark sensor connector
form main control board.
3) Unscrew the 2 ST2.9X6 and take the moving blade module off.
4) Take off the E-ering, then take off gear 30 and gear 31-17.
5) Cut the wire tie shown in , unscrew the 2 ST2.6X6 and take off the upper channel module.①
6) Unscrew the 2 ST2.2X4 screws，then take the mark sensor off.
7) Install a new mark sensor and reassemble by following these steps in reverse order.
Notice：
 In disassembling the printer cover, please use moderate force to avoid damage the cover.
 Please do not pull the cable when detaching the connector, so as to avoid breaking the cable.
 Please make sure that all the connectors connect to their sockets firmly.
 Please avoid crushing the cable in reassembly.
 In reassembling, please fix all screws firmly.