Brother GT-3 Series Service Manual page 8

program.............................................................. 83
3-2-3-3. Update with Boot System program.......... 83
3-2-3-4 Upgrade in Flash ROM writing error......... 84
3-3. GT-3 Service Tool.............................................. 85
3-3-1. Precautions of using GT-3 Service Tool....... 85
3-3-2. Resetting "Clean Tube W" Warning.............. 85
3-3-3. Demonstration Mode...................................... 86
3-4. Getting Log File and Analysis ........................... 86
3-4-1. Precautions of getting Log File...................... 86
3-4-2. Getting Log File .............................................. 87
3-4-3. View Log File with GT-3 Service Tool........... 87
4. Solving Print Quality Problems
4-1. Checking the Cause of Misfiring....................... 90
4-1-1. Detailed Check Flow ...................................... 91
4-1-2. Heavy misfiring in printing (Checking Cracks
inside the Tube) ............................................... 98
4-1-3. Faded Print by Dryness (Changing the
Wipe Frequency) ............................................... 100
4-1-4. Cleaning the Tubes and Print Heads
(White/Color Tube Cleaning) ............................ 101
5. Regular Maintenance
5-1. Cleaning ............................................................. 108
5-1-1. Cleaning the Print Head Caps and Wiper
Blades................................................................. 108
5-1-2. Cleaning the Print Head Nozzles .................. 110
5-1-3. White Ink Maintenance .................................. 112
5-1-4. Cleaning the inside of the printer................... 113
5-1-5. Cleaning the Encoder Strip............................ 113
6. Replacing Parts
6-1. Replacing the Printer Parts ............................... 117
6-1-1. Required Tools ............................................... 117
6-1-2. Assembling/Disassembling the Covers ........ 118
6-1-3. Assembling/Disassembling of the Platen ..... 123
6-1-4. Platen Belt and Reduction Belt...................... 128
6-1-5. Adjusting the tension of Platen Belt and
Reduction Belt ................................................... 133
6-1-6. Platen Motor ................................................... 135
6-1-7. Platen Pulley Ball Bearing.............................. 139
6-1-8. Platen Origin Sensor...................................... 142
6-1-9. Adjustment of the Platen Sensor Dog........... 144
6-1-10. Platen Top Plate and Shoulder Bar ............ 147
6-1-11. Leveling of the Platen Top Plate.................. 150
6-1-12. Carriage Motor.............................................. 153
6-1-13. Carriage Driving Parts.................................. 155
6-1-14. Encoder Strip................................................ 158
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6-1-15. Sensor Flap .................................................. 162
6-1-16. Assembling / Disassembling of the
Maintenance Unit ............................................ 165
6-1-17. Wiper Cleaner............................................... 171
6-1-18. Checking and Adjusting the Wiper
Blade Assy ......................................................... 173
6-1-19. Pump Tube ................................................... 178
6-1-20. Suction Pump Assy...................................... 183
6-1-21. Replace the Pump Sensor .......................... 188
6-1-22. Cap Rubber .................................................. 190
6-1-23. Cassette SW Harness Assy........................ 192
6-1-24. Sensor for the CL Drive Cam ...................... 194
6-1-25. Motor of the CL Drive Cam.......................... 196
6-1-26. Wiper Sensor................................................ 198
6-1-27. Adjusting the Height of Wiper Blade ........... 200
6-1-28. Adjusting the position of Wiper Blades ....... 203
6-1-29. Wiper Motor .................................................. 205
6-1-30. Waste Ink Tubes .......................................... 206
6-1-31. Solenoid for Head Cleaning ........................ 211
6-1-32. Ink Supply Mechanism ................................ 213
6-1-33. Replacing the Filter on the Print Head........ 220
6-1-33-1. Replacing the Filter for CMYK.............. 220
6-1-33-2. Replacing the Filter for White ............... 223
6-1-34. Ink Switch Dog ............................................. 226
6-1-35. Tubes ............................................................ 232
6-1-36. Needles......................................................... 267
6-1-37. Ink Retrieval Unit (GT-381/
GT-361 only) ........................................................ 273
6-1-38. Print Heads................................................... 279
6-1-39. Print Head FFC ............................................ 288
6-1-40. Waste Ink Units ............................................ 292
6-1-41. Exhaust Fan ................................................. 299
6-1-42. Removing the Needle Felt........................... 301
6-1-43. Felts on Cartridge Base............................... 307
6-2. Replacing the Electrical Parts........................... 309
6-2-1. Precautions in Adjustment............................. 309
6-2-2. Control Box, Operation Panel, PCBs............ 310
6-2-3. Motors, Solenoids, Sensors and Switches... 311
6-2-4. Control Box Assy............................................ 313
6-2-5. Connectors ..................................................... 314
6-2-6. Connector Locations ...................................... 314
6-2-7. Main PCB Assy .............................................. 318
6-2-8. EMC Filter....................................................... 322
6-2-9. Speaker........................................................... 322
6-2-10. Power Unit .................................................... 323
6-2-11. Surge Absorber PCB Assy .......................... 324
6-2-12. Control Box Assy.......................................... 325
GT-3 Series