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
1-5-28
Problem Causes Check procedures/corrective measures
1-5
*1: Optional for 15 cpm copier. *2: For 20 cpm copier only. *3: Optional for 220-240 V specifications of 15 cpm copier.
*4: Optional for both 20 cpm and 15 cpm copiers.
(24)
The original size is
not detected
correctly.
(25)
The message
requesting paper to
be loaded is shown
when paper is
present in the upper
drawer.
(26)
The message
requesting paper to
be loaded is shown
when paper is
present in the lower
drawer*
1
.
(27)
The message
requesting paper to
be loaded is shown
when paper is
present on the
bypass tray.*
3
(28)
The size of paper in
the upper drawer is
not displayed
correctly.
Original is not placed
correctly.
Poor contact in the original
size detection sensor
connector terminals.
Defective original size
detection sensor.
Poor contact in the upper
paper switch connector
terminals.
Defective upper paper
switch.
Poor contact in the lower
paper switch*
1
connector
terminals.
Defective lower paper
switch*
1
.
Poor contact in the bypass
paper switch*
3
connector
terminals.
Defective bypass paper
switch*
3
.
Poor contact in upper
paper size switch 1
connector terminals.
Defective upper paper size
switch 1.
Poor contact in upper
paper size switch 2
connector terminals.
Defective upper paper size
switch 2.
Poor contact in upper
paper size switch 3
connector terminals.
Defective upper paper size
switch 3.
Check the original and correct if necessary.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if the sensor operates correctly. If not, replace it.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN3-10 on the main PCB goes low when the upper
paper switch is turned on with 5 V DC present at CN3-11 on the
main PCB. If not, replace the upper paper switch.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN8-15 on the main PCB goes low when the lower
paper switch* is turned on with 5 V DC present at CN8-21 on the
main PCB. If not, replace the lower paper switch*
1
.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN25-2 on the main PCB goes low when the bypass
paper switch*
3
is turned on with 5 V DC present at CN25-3 on
the main PCB. If not, replace the bypass paper switch*
3
.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN9-2 on the main PCB goes low when upper paper
size switch 1 is turned on. If not, replace upper paper size switch
1.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN9-4 on the main PCB goes low when upper paper
size switch 2 is turned on. If not, replace upper paper size switch
2.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Check if CN9-6 on the main PCB goes low when upper paper
size switch 3 is turned on. If not, replace upper paper size switch
3.