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
2-3-8
2-3
CN9 CN8 CN4 CN6
CN5
CN7
CN34
2AX2801
REV : 3
CN28
CN26
IC3
IC9
IC16
IC12
IC11
IC14
IC22
IC10
IC42
IC28
BT1
-+
IC39
IC40
IC46
IC43
IC5
IC15
CN25
IC4
CN27
CN23 CN22 CN24 CN20 CN21
CN29
CN19
IC21
IC20
IC6
IC7
IC13
IC24
IC25IC26IC27
IC35
IC36
IC45
IC53
IC52
IC44
IC51
IC34 IC33
IC32
IC31
IC30
IC29
IC23
IC37
IC38
IC47
IC48
IC49
IC50
IC41
IC19
IC18
IC8
IC2
IC1
CN16CN14CN12
CN32
CN10
CN11 CN13 CN15 CN17
CN18
CN30
CN31
CN33
CN3
CN2
CN1
81
1
2
39
40
51
8
5
2
1
101
6
1
8
9
13
1
1
15
14
30 1
19
14
13
9
8
4
1
24
25
40
41
64
65
2
1
B29
B30
A29
A30
B1
B2
A1
A2
52
51
80
36
37
48
1
12
13
104
53
52
1
208
156
157
3
1
1
76
77
152
153
228
229
304
1
1
1
1
1
11
37
73
37
3636
108 108
144
144
1415
15
28
28
14
48
25 24
100
81
31
50
51
80
30
50
49
48
100
99
28
25 24
1
12
B1
B2
A1
A2
B2
B1
A2
A1
B2
B1
A2
A1
12
12
1
24 14
11
15
16
12
1
181
8
A12
A11
B1
A1
B12
A1
B11
2
1
2
1
1
1
1
1
7
3
2
B20
B19
A20
A19
B40
B39
A40
A39
B25
B26
A25
A26
8
10
11
13
12
2
1
21
22
2
1
17
18
101
1
1
1
4
2
1
10
11
11
6
7
2
1
2
1
12
13
15
14
2
1
2
1
1
36
37
72
73
144
8
7
25
26
15
14
2
Figure 2-3-6 Main PCB silk-screen diagram (20 cpm copier)