Samsung SRP-275 Service Manual page 4

5-4 SRP-275 Whole unit Sub-assembly .................................................................................................. 97
5-4-1 Cover base assy ......................................................................................................................... 97
5-4-2 Switch-paper near end assy ....................................................................................................... 98
5-4-3 Switch-paper end assy................................................................................................................ 98
5-4-4 Cover middle assy ...................................................................................................................... 99
5-4-5 Switch-cover open assy ............................................................................................................ 100
5-4-6 Switch-paper near end -W assy................................................................................................ 100
5-4-7 Bracket PCB assy ..................................................................................................................... 101
5-4-8 Serial interface assy.................................................................................................................. 102
5-4-9 cover front-A assy ..................................................................................................................... 102
5-5 SRP-275 Whole unit Main-assembly............................................................................................... 103
5-5-1 Main-assembly A (for SRP-275A type)..................................................................................... 103
5-5-2 Main-assembly A (for SRP-275C type)..................................................................................... 105
5-5-3 Main-assembly B ...................................................................................................................... 107
5-5-4 Main-assembly C ...................................................................................................................... 109
5-5-5 Main-assembly D ...................................................................................................................... 110
6. Adjustments and Maintenance........................................................................................................... 112
6-1 Adjustment ....................................................................................................................................... 112
6-1-1 Adjustment of Head gap ........................................................................................................... 112
6-1-2 Replacement of Printer-head .................................................................................................... 112
6-2 Maintenance .................................................................................................................................... 113
6-2-1 Cleaning .................................................................................................................................... 113
6-2-2 Inspection.................................................................................................................................. 113
6-3 Lubricants and adhesive application ............................................................................................... 114
6-3-1 Lubricant requirements ............................................................................................................. 114
6-3-2 Lubricant types.......................................................................................................................... 114
6-3-3 Lubrication points...................................................................................................................... 114
6-3-4 Adhesive application requirements........................................................................................... 114
6-3-5 Adhesive types.......................................................................................................................... 114
6-3-6 Adhesive application points ...................................................................................................... 114
6-4 Tools, lubricants and adhesives ...................................................................................................... 115
6-4-1 List of tools ................................................................................................................................ 115
6-4-2 List of lubricants and adhesives................................................................................................ 115
7. Troubleshooting .................................................................................................................................. 116
7-1 Troubleshooting flow chart............................................................................................................... 116
A. POWER LED does not light ........................................................................................................... 117
B. PAPER LED is lit............................................................................................................................ 118
C. ERROR LED is blink...................................................................................................................... 119
D. ERROR LED is lit........................................................................................................................... 120
E. Self test is not normal .................................................................................................................... 121
F. Data from host is not printed normally ........................................................................................... 122
7-2 Troubleshooting flow tables ............................................................................................................. 123
7-2-1 Initialization problems ............................................................................................................... 124
7-2-2 Printing quality problems........................................................................................................... 125
7-2-3 Printer mechanism problems .................................................................................................... 126
7-2-4 Auto cut mechanism problems.................................................................................................. 127
8. Appendix (Mechanism operating principles).................................................................................... 128
8-1 Transport mechanism ...................................................................................................................... 128
8-1-1 Head feeding system ................................................................................................................ 128
8-1-2 Paper feeding system ............................................................................................................... 129
8-1-3 Ribbon feeding system ............................................................................................................. 130
8-1-4 Color changing system ............................................................................................................. 130
8-2 Printing mechanism ......................................................................................................................... 131
8-3 Detection mechanism ...................................................................................................................... 132
8-3-1 Home position detection mechanism........................................................................................ 132
8-3-2 Paper near end detection mechanism ...................................................................................... 133
8-3-3 Paper end detection mechanism .............................................................................................. 134
8-3-4 Rear cover open detection mechanism .................................................................................... 134
8-3-5 Auto cutter home position detection mechanism ...................................................................... 134
8-4 Auto cutter mechanism .................................................................................................................... 135
8-5 Easy paper loading mechanism....................................................................................................... 136
Rev. 2.00
- 4 -
SRP-275