Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment MB black-n-white-printers 212 Service manual sm212

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4510-001


Table of Contents

Laser Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
    Printer Side View - Locations . . . . . . . . . . . . . . . . . . . . . . . . . . .             1-1
    Maintenance Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            1-2
       Tools Required for Service . . . . . . . . . . . . . . . . . . . . . . . . . . .             1-2
    Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     1-2
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
    Print Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
       Vertical Black Line and Band . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
       Vertical White Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
       Horizontal Black Band. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
       Black/White Spots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
       Light Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
       Dark or Black Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
       Uneven Density. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
       Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
       Residual Image at 75 mm Intervals (1) . . . . . . . . . . . . . . . . . . 2-3
       Residual Image at 75 mm Intervals (2) . . . . . . . . . . . . . . . . . . 2-4
       Residual Image at 32 mm Intervals. . . . . . . . . . . . . . . . . . . . . 2-4
       Residual Image at 57 mm Intervals. . . . . . . . . . . . . . . . . . . . . 2-4
       Toner on Front of Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
       Toner on Back of Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
       Blank Page Printout (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
       Blank Page Printout (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
       Repeated marks or voids down page . . . . . . . . . . . . . . . . . . . 2-6
    Paper Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
       Printing in wrong position . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
       Paper stopping, jamming, or feeding multiple sheets . . . . . . . 2-7
       Paper Path Jam 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
       Paper Path Jam 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
       Paper Path Jam 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
    Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
       All LEDs blinking (Printhead Error) during a print job . . . . . . 2-10
       All LEDs blinking (Fuser Error) at power up . . . . . . . . . . . . . 2-11
       The LED blinks once then all other LEDs blink (Over Heat Error)


                                                                                                      iii
4510-001

         2-11
         The LED blinks once then all other LEDs blink (Low Heat Error).
         2-12
         The LED blinks once then all other LEDs blink (Open Fuser Error)
         2-13
         False Paper Empty Indication . . . . . . . . . . . . . . . . . . . . . . . .2-13
         False Paper Present Indication . . . . . . . . . . . . . . . . . . . . . . .2-14
         False Cover Open Indicator . . . . . . . . . . . . . . . . . . . . . . . . . .2-14
         Error LED Off When Cover Open. . . . . . . . . . . . . . . . . . . . . .2-15
         Drive Motor Does Not Operate. . . . . . . . . . . . . . . . . . . . . . . .2-15
         No Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
    Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
      Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
      Other Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
      Operator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
      Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
      Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
      Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
      Pick Roller Clutch Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
      HVPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
      Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
      Fuser Thermostat and Lamp . . . . . . . . . . . . . . . . . . . . . . . . .3-15
      LVPS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17
      Main Board and Input/Exit Sensor Board . . . . . . . . . . . . . . . .3-20
      Pre-Transfer LED Assembly (PTL). . . . . . . . . . . . . . . . . . . . .3-21
      Pick Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1




iv Service Manual
4510-001

Laser Notices

Laser notice
  The printer is certified in the U.S. to conform to the requirements of
  DHHS 21 CFR Subchapter J for Class I (1) laser products, and
  elsewhere is certified as a Class I laser product conforming to the
  requirements of IEC 60825.

  Class I laser products are not considered to be hazardous. The
  printer contains internally a Class IIIb (3b) laser that is nominally a 5
  milliwatt gallium arsenide laser operating in the wavelength region of
  770-795 nanometers. The laser system and printer are designed so
  there is never any human access to laser radiation above a Class I
  level during normal operation, user maintenance, or prescribed
  service condition.


Laser
  Der Drucker erf

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