Brother P-touch PT-2730 Service Manual page 4

[ 5 ] Installing the LCD Module ASSY, the Main PCB ASSY and the PCB Holder .......... III-29
[ 6 ] Installing the Cassette PCB ASSY ............................................................................... III-32
[ 7 ] Installing the Power PCB ASSY .................................................................................. III-34
[ 8 ] Assembling the Cassis ASSY....................................................................................... III-35
[ 9 ] Installing the Chassis ASSY......................................................................................... III-42
[ 10 ] Installing the Battery Terminals, the Blind Cover and the Bottom Cover ................... III-44
[ 11 ] Installing the Dry Cells and the Battery Lid................................................................. III-46
[ 12 ] Installing the Cassette Cover ASSY and the Tape Cassette......................................... III-47
3.2 Final Check and Inspection Mode ........................................................................................ III-48
3.3 Inspection Mode ................................................................................................................... III-49
3.3.1 Write setting mode ([1] key) .......................................................................................... III-49
[ 1 ] Head Rank Set mode .................................................................................................... III-49
[ 2 ] County Set mode .......................................................................................................... III-50
[ 3 ] Check LCD Indication mode........................................................................................ III-51
3.3.2 Inspect cassette sensor switch mode ([3] key) ............................................................... III-53
3.3.3 Inspect key mode ([4] key)............................................................................................. III-57
3.3.4 PRINT 1 mode ([5] key)................................................................................................. III-59
3.3.5 CUT mode ([6] key) ....................................................................................................... III-60
3.3.6 Check encoder read mode ([E] key)............................................................................... III-61
3.3.7 Write serial No. mode ([U] key)..................................................................................... III-63
3.4 Troubleshooting for the Test Mode ...................................................................................... III-64
[ 1 ] LCD Indication Check mode........................................................................................ III-64
[ 2 ] Cassette Sensor Switch Check mode............................................................................ III-65
[ 3 ] Key Check mode .......................................................................................................... III-67
[ 4 ] Print Check mode ......................................................................................................... III-68
[ 5 ] Cut Check mode ........................................................................................................... III-68
[ 6 ] Encode Reading Check mode....................................................................................... III-70
[ 7 ] DC Motor Rotation Adjustment mode ......................................................................... III-71
[ 8 ] Head Rank Set mode .................................................................................................... III-71
CHAPTER IV TROUBLESHOOTING
4.1 Overview.................................................................................................................................IV-1
4.1.1 Precautions ....................................................................................................................... IV-1
4.1.2 After Repairing .................................................................................................................IV-1
4.2 Troubleshooting Guide ...........................................................................................................IV-1
4.3 Troubleshooting Flows ...........................................................................................................IV-2
[ 1 ] Tape feeding failure........................................................................................................IV-2
[ 2 ] Printing failure................................................................................................................IV-4
[ 3 ] Powering failure (Nothing appears on the LCD and the backlight does not light.) .......IV-6
[ 4 ] No key entry possible .....................................................................................................IV-8
[ 5 ] Tape cutting failure.........................................................................................................IV-8
[ 6 ] Interface port failure .......................................................................................................IV-9
[ 7 ] LCD indication error or backlight error .........................................................................IV-9
[ 8 ] Tape cassette type not identified ..................................................................................IV-10
APPENDIX 1CIRCUIT DIAGRAMS
■ Main PCB circuit diagram (1/2) ........................................................................................... A-1
■ Main PCB circuit diagram (2/2) ........................................................................................... A-2
■ Key PCB circuit diagram...................................................................................................... A-3