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

2AV/X
1-5-30
1-5
Problem Causes/check procedures Corrective measures
1-5-5 Mechanical problems
(1)
No primary paper feed.
(2)
No secondary paper
feed.
(3)
Skewed paper feed.
(4)
The scanner does not
travel.
(5)
Multiple sheets of paper
are fed at one time.
(6)
Paper jams.
(7)
Toner drops on the
paper conveying path.
(8)
Abnormal noise is
heard.
Check if the surfaces of the following pulleys
are dirty with paper powder: upper paper
feed pulleys, lower paper feed pulleys* and
bypass paper feed pulleys.
Check if the paper feed pulleys are
deformed.
Electrical problem with the following
electromagnetic clutches: upper paper feed
clutch, lower paper feed clutch* and bypass
paper feed clutch.
Check if the surfaces of the left and right
registration rollers are dirty with paper
powder.
Electrical problem with the registration
clutch.
Width guide in a drawer installed incorrectly.
Deformed width guide in a drawer.
Check if a pressure spring along the paper
conveying path is deformed or out of place.
Check if the scanner wire is loose.
The scanner motor malfunctions.
Deformed drawer claw.
Check if the paper is curled.
Check if the paper is excessively curled.
Deformed guides along the paper conveying
path.
Check if the contact between the right and
left registration rollers is correct.
Check if the press roller is extremely dirty or
deformed.
Check if the contact between the heat roller
and its separation claws is correct.
Check if the developing section of the image
formation unit is extremely dirty.
Check if the pulleys, rollers and gears
operate smoothly.
Check if the following electromagnetic
clutches are installed correctly: upper paper
feed clutch, lower paper feed clutch* and
bypass paper feed clutch.
Clean with isopropyl alcohol.
Check visually and replace any deformed
pulleys (see page 1-6-3).
See pages 1-5-26.
Clean with isopropyl alcohol.
See page 1-5-26.
Check the width guide visually and correct
or replace if necessary.
Repair or replace if necessary .
Repair or replace.
Reinstall the scanner wire (see page 1-6-
21).
See page 1-5-25.
Check the drawer claw visually and correct
or replace if necessary.
Change the paper.
Change the paper.
Check visually and replace any deformed
guides.
Check visually and remedy if necessary.
Replace the pressure spring if it is
deformed.
Clean or replace the press roller.
Repair if any springs are off the separation
claws.
Clean the developing section of the image
formation unit.
Grease the bearings and gears.
Correct.
*Optional for 15 cpm copier.










