Symptom
Action
Blank or faint copies
Y
N
(continued)
Change the varistor.
The laser beam may not be responding to the data signal, and
may be continuously exposing the master. Check that the following
connections are not loose: SPU CN4 - UIB CN6, UIB CN8 - LDDR.
Does the data signal at the LDDR (CN1-6) switch on/off normally?
Y
N
Replace the LDDR, UIB, SCU, or SPU.
If there is a faint image, there could be a problem with the development
unit. Check the development drive mechanism. Clean any dirty
components.
Does the bias terminal receive -225 V +/- 10 V?
Y
N
Does the power pack receive the trigger signal
(SPU CN17-9 to low) and the power signal (SPU CN17-5)?
Y
N
Replace the SPU or SCU.
Replace the power pack.
Does the development roller attract toner?
Y
N
Clean the roller. Replace it if necessary.
Check that the following connectors are not loose: SPU CN5 - DRU CN3,
DRU CN1. Does the development clutch operate?
Y
N
Replace either the development clutch, the DRU,
the SPU, or the SCU.
Check the scanner (continued on the next page).
5-5
Содержание FAX7000L
Страница 2: ......
Страница 8: ...SECTION 1...
Страница 24: ...1 3 2 Minimum Space Requirements 1 15...
Страница 28: ...1 18a...
Страница 50: ...SECTION 2 PROGRAMMING TESTING...
Страница 53: ...2 1 Operation Panel 2 1...
Страница 169: ......
Страница 223: ...S E C T I O N 4...
Страница 234: ...S E C T I O N 5...
Страница 307: ...S E C T I O N 6...
Страница 308: ...SECTION 6 OPTIONAL BAR CODE READER 6 1 Accessory Check List 6 1 6 2 Installation Procedure 6 2...
Страница 311: ...S E C T I O N 7...
Страница 313: ...7 1 Point to point Diagram 7 1...
Страница 314: ...7 2...
Страница 315: ...7 3...
Страница 344: ...7 3 Block Diagrams 1 Overall Machine Control Overall 7 32...
Страница 345: ...Main CPU 7 33...
Страница 346: ...Main Slave CPU Interface 7 34...
Страница 347: ...Slave CPU...
Страница 348: ...Communication Control 7 36...
Страница 349: ...2 Video Data Path Transmission 7 37...
Страница 350: ...Reception 7 38...
Страница 351: ......
Страница 352: ...3 Power Distribution From PSU to SPU 7 40...
Страница 353: ...Distribution by SPU 7 41...
Страница 354: ...UIB and LIB 7 42...
Страница 355: ...4 Scanner Fluorescent Lamps 24VD Power Supply 7 43...
Страница 356: ...Document Feed Mechanism 7 44...
Страница 357: ...CCD Drive 7 45...
Страница 358: ...5 Communication Control 7 46...
Страница 359: ...6 Printer Laser Diode Drive 7 47...
Страница 360: ...Main Scan Synchronization 7 48...
Страница 361: ...Fusing Lamp Power Switching 7 49...
Страница 362: ...Fusing Lamp Temperature Monitoring...
Страница 363: ...7 4 Electrical Component Layout 7 51...
Страница 364: ...7 52...
Страница 367: ...7 5 Timing Charts 1 Scanner 7 55...
Страница 368: ...2 Printer 7 56...
Страница 369: ...7 57...
Страница 370: ......
Страница 371: ...APPENDIX Appendix A Glossary A 1...