MUTOH SC-550 Maintenance Manual page 6

5.2.5. Adjusting the SHEET OFF system. .................................................................................34
5.2.6. Backup plots (on paper only). ..........................................................................................35
5.3. Diagnostics with optional LCD keyboard...............................................................................36
5.3.1. Diagnost 1. .......................................................................................................................37
5.3.2. Diagnost. 2 .......................................................................................................................38
5.3.3. Diagnost. 3 .......................................................................................................................39
5.3.4. Diagnost. 4 .......................................................................................................................40
5.3.5. Diagnost. 5 .......................................................................................................................40
5.3.6. Diagnost. 6 .......................................................................................................................42
5.3.7. Adjust. 7 ...........................................................................................................................42
5.3.8. Adjust. 8 ...........................................................................................................................42
5.3.9. Adjust. 9 ...........................................................................................................................43
5.3.10. Adjust. 10 .......................................................................................................................46
6. PARTS REPLACEMENT AND ADJUSTMENT.
6.1. Maintenance access table for parts replacement. ....................................................................47
6.2. Mechanical parts. ....................................................................................................................48
6.2.1. Covers Left and Right : removal and installation. ...........................................................48
6.2.2. Transparent cover : Removal and installation..................................................................49
6.2.3. PCB box :open and close. ................................................................................................50
6.2.4. Y-rail cover : Removal and installation. ..........................................................................51
6.2.5. Grid cover : Removal and installation. ............................................................................51
6.2.6. Cutting head : Removal and installation. .........................................................................53
6.2.7. Grid rollers : removal and installation. ............................................................................54
6.2.8. Y-drive belt (long) : removal and installation..................................................................55
6.2.9. Pressure roller pressure adjustment..................................................................................58
6.2.10. Sheeting off mechanism : mechanical alignment. .........................................................59
6.3. Electronical parts.....................................................................................................................60
6.3.1. Main PC board : Removal and installation. .....................................................................60
6.3.2. Main and terminal PCB SC-550 : Removal and installation. ..........................................61
6.3.3. Dip switch settings on Main PC board.............................................................................62
6.3.4. EEPROM initialisation and replacement. ........................................................................63
6.3.5. Power supply board : removal and installation................................................................64
6.3.6. Power supply board SC-550 : removal and installation...................................................65
6.3.7. Power supply output connections. ...................................................................................65
6.3.8. Terminal Board : removal and installation. .....................................................................66
6.3.9. Keyboard : removal and installation. ...............................................................................67
6.3.10. X-motor and drive belt : removal and installation. ........................................................68
6.3.11. Y-motor and drive belt : removal and installation. ........................................................68
6.3.12. Head flex cable : removal and installation.....................................................................69
6.3.13. Paper sensors : removal and installation. .......................................................................70
6.3.14 Transparent cover sensor : removal and installation.......................................................70
6.3.15. Pressure roller UP/DOWN sensor : removal and installation........................................71
6.3.16. Pressure roller UP/DOWN sensor SC-550 : removal and installation...........................71
6.3.17. Fan motors : removal and installation............................................................................72
7. JIG TOOL LIST.
7.1. Jig tool list...............................................................................................................................73
7.2. Special glue. ............................................................................................................................73
......................................................................................................73
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AP-74030, Rev / B