II
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2.2 DISASSEMBLY & REASSEMBLY
Safety Precautions
(1) You should carry out disassembly & reassembly jobs on an anti-static sheet
grounded correctly. Otherwise, the LSI and other electronic devices will be damaged
due to the electricity charged in your body.
(2) When transporting PCBs, be sure to wrap them in conductive sheets such as
aluminum foil.
(3) When using soldering irons and other heat-generating tools, take care not to damage
the resin parts such as wires, PCBs, and covers.
(4) Be careful not to lose screws, washers, or other parts removed for parts replacement.
(5) Tighten screws to the torque values listed below.
Tightening Torque List
Location
Screw type
Q'ty Tightening torque
Bottom cover
Taptite, bind B M2.6 x 6
2
0.39 N•m (4 kgf•cm)
Chassis ASSY
Taptite, bind B M2.6 x 4
3
0.196 N•m (2 kgf•cm)
Chassis ASSY (for DC motor) Screw, pan M1.7 x 2.5
2
0.10 to 0.196 N•m (1 to 2 kgf•cm)
Thermal head ASSY
Screw, cup M2.6 x 4
1
0.49 N•m (5 kgf•cm)
Main PCB
Taptite, bind B M2.6 x 4
2
0.196 N•m (2 kgf•cm )
Lens
Taptite, bind B M2.6 x 4
2
0.196 N•m (2 kgf•cm )
Select dial
Taptite, bind B M2.6 x 4
3
0.196 N•m (2 kgf•cm )
Содержание P-touch BB4
Страница 1: ...SERVICE MANUAL MODEL P touch BB4 ...
Страница 2: ...SERVICE MANUAL MODEL P touch BB4 ...
Страница 5: ...Chapter I SPECIFICATIONS ...
Страница 9: ...I 3 Figure 1 1 2 Key Arrangement 1 ...
Страница 10: ...I 4 Figure 1 1 2 Key Arrangement 2 ...
Страница 12: ...Chapter II MECHANISMS ...
Страница 42: ...Chapter III ELECTRONICS ...
Страница 54: ...III 11 Figure 3 2 14 Waveforms of Control Signal and Motor Drive Current ...
Страница 56: ...III 13 Figure 3 2 16 Waveforms of Dial Scanning Pulse Outputs ...
Страница 57: ...Chapter IV TROUBLESHOOTING ...
Страница 60: ...IV 2 4 1 3 Troubleshooting Flows 1 Tape feeding failure ...
Страница 61: ...IV 3 2 Printing failure ...
Страница 62: ...IV 4 3 Powering failure Nothing appears on the LCD ...
Страница 63: ...IV 5 4 Abnormal LCD indication 5 No key entry possible ...
Страница 64: ...APPENDIX Circuit Diagram Main PCB ...
Страница 66: ...Aug 2001 8V2018BE0 Printed in Japan ...