8-26
Phaser 4400 Laser Printer Service Manual
Laser Trouble (U2 Error Code)
There are three major causes of U2 errors:
1.
Warm-up failure - SOS signal intervals are longer than the READY reference
value during three consecutive samplings of the SOS. The actual laser power does
not equal the value set in NVRAM.
2.
Laser speed too low (Down Failure) - SOS signal intervals are longer than the set
Down Failure interval after completion of warm-up. The set Down Failure is a
time interval corresponding to 90% of the rated Laser Motor speed of rotation.
3.
Laser speed too high (Overrun Failure) - SOS signal intervals are shorter than the
set Overrun Failure interval after completion of warm-up. The set Overrun Failure
is a time interval corresponding to 102% of the rated Laser Motor speed of
rotation.
Fuser Control
Fuser Temperature Control
To maintain the temperature of the Fuser Heat Roller at the levels required for proper
operation, the Fuser uses a Thermistor to monitor the temperature on the surface of
the Heat Roller. The Engine Logic Board compares that temperature with the rated
temperature that is set in NVRAM, and switches the Heat Rod on or off depending on
how the actual temperature differs from the rated temperature.
Fuser Temperature Adjustment
You can adjust the rated Fuser temperature by changing the Fuser Configuration from
the Tray Setup Menu.
The printer switches on the Heat Rod when the Fuser temperature falls below the
current control temperature (approximately 178
°
C for the standard control
temperature). The printer switches off the Heat Rod when the Fuser temperature rises
above the current control temperature (approximately 180
°
C for the standard control
temperature).
Fuser Warm-up
Power to the Heat Rod is applied at the start of printer warm-up. Warm-up is
complete when the Heat Roller reaches the current control temperature. If the Fuser
temperature is below 100
°
C at start of warm-up, then warm-up finishes when the
Fuser temperature reaches “standby temperature”.
Содержание 4400DT - Phaser B/W Laser Printer
Страница 1: ...Service Manual P h a s e r L a s e r P r i n t e r 4400...
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Страница 140: ...Phaser 4400 Laser Printer Service Manual 3 43 Test Print...
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Страница 184: ...Phaser 4400 Laser Printer Service Manual 4 3...
Страница 190: ...Phaser 4400 Laser Printer Service Manual 4 9 Print Engine NVRAM There is no single reset for the Print Engine NVRAM...
Страница 191: ...4 10 Phaser 4400 Laser Printer Service Manual...
Страница 193: ...5 2 Phaser 4400 Laser Printer Service Manual...
Страница 212: ...Phaser 4400 Laser Printer Service Manual 6 19 Retard Roller Assembly...
Страница 214: ...Phaser 4400 Laser Printer Service Manual 6 21 Retard Roller Friction Clutch Assembly...
Страница 218: ...Phaser 4400 Laser Printer Service Manual 6 25 Motor Assembly...
Страница 220: ...Phaser 4400 Laser Printer Service Manual 6 27 Connector and Socket Guide...
Страница 231: ...6 38 Phaser 4400 Laser Printer Service Manual Feeder PWB...
Страница 239: ...6 46 Phaser 4400 Laser Printer Service Manual MPT Pick Up Cam MPT Roller Assembly...
Страница 247: ...6 54 Phaser 4400 Laser Printer Service Manual MPT No Paper Sensor...
Страница 251: ...6 58 Phaser 4400 Laser Printer Service Manual Paper Handler Assembly Paper Handler Assembly Removal...
Страница 257: ...6 64 Phaser 4400 Laser Printer Service Manual Registration Springs Rubber Registration Roller...
Страница 261: ...6 68 Phaser 4400 Laser Printer Service Manual Fuser Harness Assembly...
Страница 263: ...6 70 Phaser 4400 Laser Printer Service Manual Exit Chute Assembly...
Страница 268: ...Phaser 4400 Laser Printer Service Manual 6 75 Mid 1 Roller Assembly Mid 2 Roller Assembly...
Страница 271: ...6 78 Phaser 4400 Laser Printer Service Manual Heat Rod Fuser Upper Cover...
Страница 279: ...6 86 Phaser 4400 Laser Printer Service Manual Drive Gear Assembly...
Страница 286: ...Phaser 4400 Laser Printer Service Manual 6 93 HVPS PWB...
Страница 293: ...6 100 Phaser 4400 Laser Printer Service Manual Duplex Harness Assembly...
Страница 296: ...Phaser 4400 Laser Printer Service Manual 6 103 Exit Tray Paper Weight Exit Tray...
Страница 309: ...6 116 Phaser 4400 Laser Printer Service Manual Locking Tab Exit Gear and Bearings Mid Roller Assembly...
Страница 330: ...Phaser 4400 Laser Printer Service Manual 6 137 Size Sensor Housing Assembly 4...
Страница 341: ...6 148 Phaser 4400 Laser Printer Service Manual Upper Chute Assembly...
Страница 345: ...6 152 Phaser 4400 Laser Printer Service Manual Locking Tab and Belt Retainer Flange Middle Roller Assembly...
Страница 364: ...Phaser 4400 Laser Printer Service Manual 6 171 Clutch and Bearing Bottom Roller Assembly...
Страница 366: ...Phaser 4400 Laser Printer Service Manual 6 173 Feed Roller Shaft Feed Roller Assembly 1...
Страница 368: ...Phaser 4400 Laser Printer Service Manual 6 175 Feed Roller Shaft Feed Roller Assembly 2...
Страница 370: ...Phaser 4400 Laser Printer Service Manual 6 177 Feed Belts...
Страница 371: ...6 178 Phaser 4400 Laser Printer Service Manual...
Страница 374: ...Phaser 4400 Laser Printer Service Manual 7 3 PL 1 1 Covers 1 of 2 Exploded View...
Страница 376: ...Phaser 4400 Laser Printer Service Manual 7 5 PL 1 2 Covers 2 of 2 Exploded View...
Страница 378: ...Phaser 4400 Laser Printer Service Manual 7 7 PL 2 1 Tray 1 1 of 2 Exploded View...
Страница 380: ...Phaser 4400 Laser Printer Service Manual 7 9 PL 2 2 Tray 1 2 of 2 Exploded View...
Страница 382: ...Phaser 4400 Laser Printer Service Manual 7 11 PL 3 1 Paper Feeder Exploded View...
Страница 384: ...Phaser 4400 Laser Printer Service Manual 7 13 PL 4 1 MPT Chute Exploded View...
Страница 386: ...Phaser 4400 Laser Printer Service Manual 7 15 PL 5 1 Paper Handler Assembly Exploded View...
Страница 388: ...Phaser 4400 Laser Printer Service Manual 7 17 PL 6 1 Chute Transport and Fuser Exploded View...
Страница 390: ...Phaser 4400 Laser Printer Service Manual 7 19 PL 7 1 Exit Exploded View...
Страница 392: ...Phaser 4400 Laser Printer Service Manual 7 21 PL 8 1 Drive and Xerographics Exploded View...
Страница 394: ...Phaser 4400 Laser Printer Service Manual 7 23 PL 9 1 Frame and Size Sensor Exploded View...
Страница 396: ...Phaser 4400 Laser Printer Service Manual 7 25 PL 10 1 Electrical Exploded View...
Страница 398: ...Phaser 4400 Laser Printer Service Manual 7 27 PL 11 1 550 Sheet Feeder 1 of 2 Exploded View...
Страница 400: ...Phaser 4400 Laser Printer Service Manual 7 29 PL 11 2 550 Sheet Feeder 2 of 2 Exploded View...
Страница 402: ...Phaser 4400 Laser Printer Service Manual 7 31 PL 12 1 Envelope Feeder 1 of 2 Exploded View...
Страница 404: ...Phaser 4400 Laser Printer Service Manual 7 33 PL 12 2 Envelope Feeder 2 of 2 Exploded View...
Страница 406: ...Phaser 4400 Laser Printer Service Manual 7 35 PL 13 1 Duplex 1 of 2 Exploded View...
Страница 408: ...Phaser 4400 Laser Printer Service Manual 7 37 PL 13 2 Duplex 2 of 2 Exploded View...
Страница 410: ...Phaser 4400 Laser Printer Service Manual 7 39 PL 14 1 Stacker 1 of 2 Exploded View...
Страница 412: ...Phaser 4400 Laser Printer Service Manual 7 41 PL 14 2 Stacker 2 of 2 Exploded View...
Страница 413: ...7 42 Phaser 4400 Laser Printer Service Manual...
Страница 443: ...8 30 Phaser 4400 Laser Printer Service Manual Duplex Unit Paper Path...
Страница 459: ...8 46 Phaser 4400 Laser Printer Service Manual Major Components of the Option Feeder Assembly...
Страница 465: ...9 6 Phaser 4400 Laser Printer Service Manual Base Engine P J Maps Base Engine P J Location Map 1 of 2...
Страница 466: ...Phaser 4400 Laser Printer Service Manual 9 7 Base Engine P J Location Map 2 of 2 910 1 910 1...
Страница 467: ...9 8 Phaser 4400 Laser Printer Service Manual Base Engine Block Diagrams Base Engine Block Diagram 1 of 4 1...
Страница 468: ...Phaser 4400 Laser Printer Service Manual 9 9 Base Engine Block Diagram 2 of 4 2...
Страница 469: ...9 10 Phaser 4400 Laser Printer Service Manual Base Engine Block Diagram 3 of 4 3...
Страница 470: ...Phaser 4400 Laser Printer Service Manual 9 11 Base Engine Block Diagram 4 of 4 4...
Страница 471: ...9 12 Phaser 4400 Laser Printer Service Manual Block Diagram Tray 1 Tray 2 and Tray 3...
Страница 474: ...Phaser 4400 Laser Printer Service Manual 9 15 Engine Logic Board to Stack Full Sensor and Rear Interlock Switch...
Страница 476: ...Phaser 4400 Laser Printer Service Manual 9 17 Engine Logic Board to Size 1 PWB to Feeder PWB Diagram 2 of 2...
Страница 479: ...9 20 Phaser 4400 Laser Printer Service Manual Engine Logic Board to Laser Assembly...
Страница 480: ...Phaser 4400 Laser Printer Service Manual 9 21 Image Processor Board to Front Panel...
Страница 482: ...Phaser 4400 Laser Printer Service Manual 9 23 550 Sheet Feeder P J Map 550 Sheet Feeder P J Map...
Страница 483: ...9 24 Phaser 4400 Laser Printer Service Manual 550 Sheet Feeder Block Diagram 1 of 2...
Страница 484: ...Phaser 4400 Laser Printer Service Manual 9 25 550 Sheet Feeder Block Diagram 2 of 2...
Страница 486: ...Phaser 4400 Laser Printer Service Manual 9 27 Duplex Unit P J Map...
Страница 487: ...9 28 Phaser 4400 Laser Printer Service Manual Duplex Unit Block Diagram...
Страница 488: ...Phaser 4400 Laser Printer Service Manual 9 29 Engine Logic Board to Duplex PWB...
Страница 491: ...9 32 Phaser 4400 Laser Printer Service Manual Stacker P J Map...
Страница 492: ...Phaser 4400 Laser Printer Service Manual 9 33 Stacker Block Diagram...
Страница 493: ...9 34 Phaser 4400 Laser Printer Service Manual Engine Logic Board to Stacker PWB...
Страница 495: ...9 36 Phaser 4400 Laser Printer Service Manual Stacker PWB to Drive Motor Assembly and Offset Motor Assembly...
Страница 497: ...9 38 Phaser 4400 Laser Printer Service Manual Envelope Feeder P J Map...
Страница 498: ...Phaser 4400 Laser Printer Service Manual 9 39 Envelope Feeder Block Diagram...
Страница 500: ...Phaser 4400 Laser Printer Service Manual 9 41 Envelope PWB to Envelope Exit Sensor Assembly No Paper Sensor and Clutch...
Страница 501: ...9 42 Phaser 4400 Laser Printer Service Manual...
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