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
1-4-3
2AV/X
1-4
Section
Item
Maintenance item contents
Initial
No. setting*
U111 Checking/clearing the drum drive time
U130 Initial setting for the developer
U131 Setting the toner sensor control voltage
U132 Replenishing toner forcibly
U135 Checking toner feed motor operation
U155 Displaying the toner sensor output
U156 Changing the toner control level
Toner feed start level
Toner empty level
U157 Checking/clearing the developing drive time
U158 Checking/clearing the developing count
U161 Setting the fixing control temperature
Primary stabilization fixing temperature
Secondary stabilization fixing temperature
Control temperature during copying
Temperature to be deducted from the control temperature when copying
onto paper with a width of 220 mm or smaller
U162 Stabilizing fixing forcibly
U163 Resetting the fixing problem data
U196 Turning the fixing heater on
U199 Checking the fixing temperature
U200 Turning all LEDs on
U203 Operating DF separately
U204 Setting the presence or absence of a key card or key counter
U207 Checking the operation panel keys
U210 Reversing the LCD
U211 Setting DF type
U240 Checking the operation of finisher motors and solenoids
U241 Checking the finisher switches
U243 Checking the operation of the DF motors, solenoids and clutch
U244 Checking the DF switches (when installing the optional SRDF)
Checking the DF switches (when installing the optional STDF)
U245 Checking messages
U250 Setting the maintenance cycle
U251 Checking/clearing the maintenance count
U252 Setting the destination
U253 Switching between double and single counts
U254 Turning auto start function on/off
U255 Setting auto clear time
U256 Turning auto preheat/energy saver function on/off
U258 Switching copy operation at toner empty detection
U260 Changing the copy count timing
U265 Setting the destination specifications
U330 Setting the number of sheets to enter stacking mode during sort operation
U332 Setting the size conversion factor
U342 Setting the ejection restriction
U343 Switching between duplex/simplex copy mode
U344 Setting preheat/energy saver mode
U345 Setting the value for maintenance due indication
U348 Setting the copy density adjustment range
U402 Adjusting margins of image printing
U403 Adjusting margins for scanning an original on the contact glass
—
—
155
—
—
—
100
44
—
—
135
160
180
0
—
—
—
—
—
—
Off
—
Off
SRDF
—
—
—
—
—
—
100
—
Japan
Double
On
90
On
Single/70
Eject
0
100
—
On
Off
Energy star
0
Special
—
—
* Initial setting for executing maintenance item U020
High voltage
Developing
Fixing and
cleaning
Operation panel
and support
equipment
Mode setting
Image
processing