Precautions; After Repairing - Brother P-touch QL-1050 Service Manual

CHAPTER IV TROUBLESHOOTING AND ERROR MESSAGE
This section gives the service personnel some of the troubleshooting procedures to be
followed if an error or malfunction occurs with this machine.
It is impossible to anticipate all of the possible troubles which may occur in future and
determine the troubleshooting procedures, so this chapter covers some sample troubles.
However, those samples will help service personnel pinpoint and repair other defective
elements if he/she analyzes and examines them well.
4.1

PRECAUTIONS

Be sure to observe the following precautions to prevent the secondary problems from
happening during troubleshooting.
(1)
Make sure to unplug an AC cord to ensure no power supply, when doing conductivity
test with a tester.
(2)
When printing error occurs, pull out the thermal head cable from the connecter until the
peripheral circuit related to the thermal head works properly.
4.2

AFTER REPAIRING

Verify again that the repaired portion works properly. Then adjust and examine this machine
according to "APPENDIX 1. MAINTENANCE SOFTWARE OPERATION". It is
recommended to record and store actual troubleshooting and repair procedures to
accumulate repair know-how.
IV- 1