Brother PT-2420PC, Service Manual

Page: 4 / 63

ii
[ 6 ] Removing the DC Motor ASSY and Cutter ASSY ........................................... III-7
[ 7 ] Removing the Roller Holder ASSY and Termal Head ASSY........................... III-8
[ 8 ] Removing the Gears ...................................................................................... III-9
[ 9 ] Removing the Switch ASSY ........................................................................... III-10
3.2 REASSEMBLY PROCEDURE............................................................................... III-11
[ 1 ] Assembling the Switch ASSY ......................................................................... III-11
[ 2 ] Assembling the Gears .................................................................................... III-12
[ 3 ] Assembling the Thermal Head ASSY and Roller Holder ASSY....................... III-13
[ 4 ] Assembling the Cutter ASSY and DC Motor ASSY ......................................... III-15
[ 5 ] Assembling the Chassis ASSY ....................................................................... III-17
[ 6 ] Assembling the LED Cover, Power Supply Actuator, Sub PCB ASSY and
Top Cover...................................................................................................... III-18
[ 7 ] Assembling the Main PCB .............................................................................. III-20
[ 8 ] Assembling the Bottom Cover, Cassette Cover and Tape Cassette ................ III-24
[ 9 ] Self Print Test ................................................................................................ III-26
CHAPTER IV ERROR INDICATION AND TROUBLESHOOTING..................... IV-1
4.1 OVERVIEW .......................................................................................................... IV-1
4.2 TROUBLESHOOTING GUIDE .............................................................................. IV-1
4.3 IF THE INDICATOR LED ON THE PT-2420PC LIGHTS OR FLASHES ................ IV-2
4.4 IF ANY ERROR MESSAGE IS DISPLAYED ON THE COMPUTER SCREEN....... IV-3
4.5 IF ANY OF THE FOLLOWING PROBLEMS OCCURS ......................................... IV-5
[ 1 ] Tape Feeding Failure ..................................................................................... IV-5
[ 2 ] Printing Failure ............................................................................................... IV-6
[ 3 ] The Indicator LED will not come on ................................................................ IV-7
[ 4 ] Interface Malfunctions .................................................................................... IV-8
Appendix 1. MAINTENANCE SOFTWARE....................................................... 1
Appendix 1.1 OVERVIEW............................................................................................. 1
Appendix 1.2 SETTING UP THE TEST ENVIRONMENT .............................................. 1
Appendix 1.3 RUNNING THE TEST PROGRAM........................................................... 2
Appendix 1.4 RUNNING THE EEPROM INITIALIZATION PROGRAM.......................... 9
Appendix 1.5 RECOVERING FROM RUN-TIME ERRORS ........................................... 10
Appendix 2. CIRCUIT DIAGRAM
[ 1 ] Main PCB