Service manual
Table Of Contents
- COVER
- CAUTION
- Safety precautions
- CONTENTS
- 1-1 Specifications
- 1-2 Handling Precautions
- 1-3 Installation
- 1-4 Maintenance mode
- 1-5 Trouble Shooting
- 1-5-1 Paper misfeed detection
- 1-5-2 Self-diagnosis
- 1-5-3 Image formation problems
- (1) No image appears (entirely white).
- (2) No image appears (entirely black).
- (3) Image is too light.
- (4) Background is visible.
- (5) A white line appears longitudinally.
- (6) A black line appears longitudinally.
- (7) A black line appears laterally.
- (8) One side of the copy image is darker than the other.
- (9) Black dots appear on the image.
- (10)Image is blurred.
- (11)The leading edge of the image is consistently misaligned with the original.
- (12)The leading edge of the image is sporadically misaligned with the original.
- (13)Paper creases.
- (14)Offset occurs.
- (15)Image is partly missing.
- (16)Fixing is poor.
- (17)Image is out of focus.
- (18)Image center does not align with the original center.
- (19)Image is not square.
- (20)Image contrast is low (carrier scattering).
- 1-5-4 Electrical problems
- (1) The machine does not operate when the main switch is turned on
- (2) The drive motor does not operate when (C200)
- (3) The scanner motor does not operate.
- (4) The toner feed motor does not operate
- (5) Cooling fan motor 1 does not operate
- (6) Cooling fan motor 2 does not operate
- (7) Cooling fan motor 3 does not operate
- (8) The drawer motor does not operate
- (9) The registration clutch does not operate
- (10) The upper paper feed clutch does not operate
- (11) The lower paper clutch does not operate
- (12) Paper feed clutch (ST) 1 does not operate
- (13) Paper feed clutch (ST) 2 does not operate
- (14) The bypass paper feed clutch does not operate
- (15) The cleaning lamp does not turn on
- (16) The exposure lamp does not turn on
- (17) The exposure lamp does not turn off
- (18) The fixing heater does not turn on (C610)
- (19) The fixing heater does not turn off
- (20) Main charging is not performed
- (21) Transfer charging is not performed
- (22) No developing bias is output
- (23) The original size is not detected
- (24) The original size is not detected correctly
- (25) The message requesting papaer to be loaded is shown when paper is present
- (26) The message requesting papaer to be loaded is shown when paper is present in the upper drawer
- (27) The message requesting papaer to be loaded is shown when paper is present in the lower drawer
- (28) The size of paper in the upper drawer is not displayed correctly
- (28) The size of paper in the upper drawer is not displayed correctly
- (29) The size of paper in the lower drawer is not displayed correctly
- (30) The printing width of the paper on the bypass is not detected correctly
- (31) A paper jam in the paper feed, paper conveying or fixing section is indicated when the main switch is turned on
- (32) The message requesting covers to be closed is displayed when the front cover, paper conveying unit and lower drawer left
- (33) Others
- 1-5-5 Mechanical problems
- 1-6 Assembly and disassembly
- 1-6-1 Precautions for assembly and disassembly
- 1-6-2 Paper feed section
- (1) Detaching and refitting the upper and lower paper feed pulleys
- (2) Detaching and refitting the bypass paper feed pulley
- (3) Detaching and refitting the left registration cleaner assembly
- (4) Detaching and refitting the right registration cleaner assembly
- (5) Detaching and refitting the bypass paper width switch
- (6) Adjustment after roller and clutch replacement
- 1-6-3 Optical section
- (1) Detaching and refitting the exposure lamp
- (2) Detaching and refitting the scanner wires
- (3) Detaching and refitting the laser scanner unit
- (4) Adjusting the skew and vertical shifting of the laser scanner unit
- (5) Detaching and refitting the ISU (reference)
- (6) Adjusting the position of the ISU (reference)
- (7) Adjusting the longitudinal squareness (reference)
- (8) Adjusting magnification of the scanner in the main scanning direction
- (9) Adjusting magnification of the scanner in the auxiliary scanning direction
- (10) Adjusting the scanner leading edge registration
- (11)Adjusting the scanner center line
- (12) Adjusting the margins for scanning an original on the contact glass
- 1-6-4 Main charging section
- 1-6-5 Drum section
- 1-6-6 Developing section
- 1-6-7 Transfer section
- 1-6-8 Cleaning section
- 1-6-9 Fixing section
- 1-7 Requirements on PCB Replacement
- 2-1 Electrical Parts Layout
- 2-2 Electrical parts layout
- 2-3 Operation of the PCBs
- 2-4 Appendixes
1-1-3
2AV/X
(4) The scanner does not travel. ........................................................................................................ 1-5-30
(5) Multiple sheets of paper are fed at one time. ................................................................................. 1-5-30
(6) Paper jams. .................................................................................................................................. 1-5-30
(7) Toner drops on the paper conveying path. ................................................................................... 1-5-30
(8) Abnormal noise is heard. .............................................................................................................. 1-5-30
1-6 Assembly and Disassembly
1-6-1 Precautions for assembly and disassembly ......................................................................................... 1-6-1
(1) Precautions ..................................................................................................................................... 1-6-1
(2) Running a maintenance item .......................................................................................................... 1-6-2
1-6-2 Paper feed section ............................................................................................................................... 1-6-3
(1) Detaching and refitting the upper and lower paper feed pulleys .................................................... 1-6-3
(2) Detaching and refitting the bypass paper feed pulley ..................................................................... 1-6-6
(3) Detaching and refitting the left registration cleaner assembly ........................................................ 1-6-8
(4) Detaching and refitting the right registration cleaner assembly ...................................................... 1-6-8
(5) Detaching and refitting the bypass paper width switch ................................................................... 1-6-9
(6) Adjustment after roller and clutch replacement ............................................................................ 1-6-10
(6-1) Adjusting the leading edge registration of image printing .................................................... 1-6-10
(6-2) Adjusting the leading edge registration for memory image printing ..................................... 1-6-12
(6-3) Adjusting the center line of image printing ........................................................................... 1-6-13
(6-4) Adjusting the margins for printing ........................................................................................ 1-6-15
(6-5) Adjusting the amount of slack in the paper .......................................................................... 1-6-17
1-6-3 Optical section .................................................................................................................................... 1-6-19
(1) Detaching and refitting the exposure lamp ................................................................................... 1-6-19
(2) Detaching and refitting the scanner wires .................................................................................... 1-6-20
(2-1) Detaching the scanner wires ............................................................................................... 1-6-20
(2-2) Fitting the scanner wires ...................................................................................................... 1-6-21
(3) Detaching and refitting the laser scanner unit .............................................................................. 1-6-24
(4) Adjusting the skew and vertical shifting of the laser scanner unit ................................................ 1-6-26
(4-1) Adjusting the skew of the laser scanner unit ....................................................................... 1-6-26
(4-2) Adjusting the vertical shifting of the laser scanner unit ........................................................ 1-6-27
(5) Detaching and refitting the ISU (reference) .................................................................................. 1-6-28
(6) Adjusting the position of the ISU (reference) ................................................................................ 1-6-30
(7) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-31
(8) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-32
(9) Adjusting magnification of the scanner in the auxiliary scanning direction ................................... 1-6-34
(10) Adjusting the scanner leading edge registration ........................................................................... 1-6-36
(11) Adjusting the scanner center line ................................................................................................. 1-6-37
(12) Adjusting the margins for scanning an original on the contact glass ............................................ 1-6-38
1-6-4 Main charging section ........................................................................................................................ 1-6-40
(1) Detaching and refitting the charger assembly .............................................................................. 1-6-40
(2) Replacing the tungsten wire (reference) ....................................................................................... 1-6-41
1-6-5 Drum section ...................................................................................................................................... 1-6-43
(1) Detaching and refitting the drum .................................................................................................. 1-6-43
1-6-6 Developing section ............................................................................................................................. 1-6-44
(1) Adjusting the position of the doctor blade (reference) .................................................................. 1-6-44
1-6-7 Transfer section ................................................................................................................................. 1-6-45
(1) Detaching and refitting the transfer roller assembly ..................................................................... 1-6-45
1-6-8 Cleaning section ................................................................................................................................. 1-6-46
(1) Detaching and refitting the cleaning blade ................................................................................... 1-6-46
(2) Detaching and refitting the drum separation claw assemblies ..................................................... 1-6-47
(3) Detaching and refitting the cleaning lower seal assembly ............................................................ 1-6-47
1-6-9 Fixing section ..................................................................................................................................... 1-6-48
(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-48
(2) Detaching and refitting the fixing unit thermistor .......................................................................... 1-6-49
(3) Detaching and refitting the heat roller separation claws ............................................................... 1-6-49
(4) Detaching and refitting the fixing heater ....................................................................................... 1-6-50
(5) Detaching and refitting the heat roller ........................................................................................... 1-6-51
(6) Detaching and refitting the press roller ......................................................................................... 1-6-53