Brother RH-981A Service Manual page 135

7. SOFTWARE
Code
1. Check if air is supplied to valve unit of the special lapel cutting device or wiring is correct.
2. Of connectors relayed to head harness, check if the harness for the hammer position sensor is
correctly attached to the connector for the hammer position sensor.
E-200
* Check if there is no harness in the control box that is broken or short-circuited.
3. Check if connectors P9 (EXINB) and P21 (EXOUT) on the control circuit board are securely
inserted and if any harness is broken or short-circuited.
1. Check if air is supplied to valve unit of the special lapel cutting device or wiring is correct.
2. Of connectors relayed to head harness, check if the harness for the hammer home position sensor
is correctly attached to the connector for the hammer home position sensor.
E-201
* Check if there is no harness in the control box that is broken or short-circuited.
3. Check if connectors P9 (EXINB) and P21 (EXOUT) on the control circuit board are securely
inserted and if any harness is broken or short-circuited.
1. Press the RESET key.
E-202 2. Of connectors relayed to head harness, check if the harness for the buttonhole sensor is correctly
E-203 attached to the connector for the buttonhole sensor.
* Check if there is no harness in the control box that is broken or short-circuited.
127
Countermeasure
RH-981A