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SuperScript 4400 — Maintenance Guide
7.2.5 Power Supply Unit
Tools
Phillips Screwdriver
Slotted Screwdriver
Disassembly Procedures
1.
Remove the side cover (LU). (See the item 7.1.1.)
2.
Remove the side cover (L). (See the item 7.1.2.)
3.
Remove the shield cover (upper). (See the item 7.2.1.)
4.
Remove the shield cover A.(See the item 7.2.1.)
5.
Remove the shield cover B.(See the item 7.2.1.)
6.
Disconnect all the harness connectors (5 pcs.) connected to the MCTL Circut Card.
7.
Remove the set screw ST3 6 (2 pcs.) of control fan assembly. (See the item 7.3.4.)
8.
Remove I/F Circut Card guide rail (upper).
9.
Remove the set screw ST3 6 (5 pcs.) of shield case 'A' assembly.
10. Remove the set screw BT4 10 (2 pcs.) of base cover (R).
11. Remove the base cover (R).
12. Remove the fan duct of power supply.
13. Disconnect all the harness connectors connected to the power supply unit.
14. Remove the set screw ST3 6 (2 pcs.) of power supply switch from the switch base.
15. Remove the metal fixture for switch.
16. Remove the set screw ST3 6 (2 pcs.) of power supply switch from the switch base.
17. Remove the rear cover. (See the item 7.1.8.)
18. Remove the inlet from the frame.
19. Remove the set screw M4 6 (1 pc.) with spring washer of grounding harness.
20. Remove the set screw ST3 6 (3 pcs.) of power supply unit.
21. Remove the power supply unit.
Assembly Procedures
1.
Install a new power supply unit. When installing, have a lower hole of the power supply unit meet a
projection of the base.
2.
After installing the new power supply unit, follow exactly the reverse order of disassembly procedures.
3.
Upon completion of the installation, reconfirm the earthing wires are provided to the frame.
4.
Connect the power supply cable.
5.
Turn the power supply switch ON.
6.
Execute the test print in Service Mode to confirm the operation and print quality.
WARNING!
Grounding wire is very important to he safety of users. Upon removal of the power supply unit,
confirm that the grounding wires (green and yellow color) is securely connected.
Содержание Super Script 4400
Страница 1: ...NEC SuperScript 4400 4400N Maintenance Guide 18 September 1998 Part Number 703 A0240 001 ...
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Страница 145: ...136 SuperScript 4400 Maintenance Guide IOD2 P W B Registration Clutch Side Cover R Cleaner Clutch Fuser Clutch C ring ...
Страница 174: ...Replacement Procedures for Maintenance Parts 165 PRINTER MAINTENANCE Controller Fan Fan Case Interlock Switch ...
Страница 189: ...180 SuperScript 4400 Maintenance Guide Toner Sensor TPD Toner Sensor TTR Fram Ass y ...
Страница 193: ...184 SuperScript 4400 Maintenance Guide Stay A Ass y Transfer Drum ...
Страница 197: ...188 SuperScript 4400 Maintenance Guide Hinge arm Hinge holder Front hinge L Front Inner Cover Front Cover Unit ...
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Страница 290: ...SuperScript 4200N and 4400 Series Printers Maintenance Guide March 1999 703 A0322 001 Addendum ...
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Страница 314: ...19 NOTES ...
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Страница 317: ...P N 703 A0322 001 NEC Technologies Inc 1250 N Arlington Heights Rd Itasca IL 60143 www nectech com ...