Read Sharp AR-C270 (serv.man6) Service Manual online
B. Internal parts
(1) Cross section
No.
Parts
Note
Name
Function and operation
1
No. 2 mirror
Sends the original image to No. 3 mirror.
2
No. 3 mirror
Send the original image to the CCD.
3
Y-LSU unit
Converts yellow components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
4
M-LSU unit
Converts magenta components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
5
No. 1 mirror
Sends the original image to No. 2 mirror.
6
Scanner lamp
Radiates light to the CCD for scanning the original image.
7
CCD lens
Reduces the original image (light) and project it to the CCD.
8
C-LSU unit
Converts cyan components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
9
CCD PWB
Reads the original image and converts it into electrical signals.
10
K-LSU unit
Converts black components of image signals sent from the ICU PWB into laser
beams, and radiates the beams onto the OPC drum.
beams, and radiates the beams onto the OPC drum.
11
Developing roller (Y)
Attaches toner on the OPC drum. (Y)
12
Developing roller (M)
Attaches toner on the OPC drum. (M)
13
Developing roller (C)
Attaches toner on the OPC drum. (C)
14
Developing roller (K)
Attaches toner on the OPC drum. (K)
15
Upper resist roller
Transports paper to the transfer section.
16
Lower resist roller
Transports paper to the transfer section.
17
Paper transport roller 1
Transports paper to the transfer resist roller.
18
Idle roller
Applies pressure to paper and the transport roller.
19
Idle roller
Prevents against paper skew.
20
Paper transport roller 1
Transports paper to the transfer section (transfer resist roller).
21
Paper feed tray (No. 1 paper tray)
Feeds paper to the paper transport section.
22
Separation roller (No. 1 paper tray)
Separates paper and transport it to the paper transport section.
1 2
3 4
5
6
7
8
9
11
12
13
14
15
16
12
13
14
15
16
17
18
18
19
20
21
22
23
24
25
26
27
28
29
30
22
23
24
25
26
27
28
29
30
31
33
34
34
37
39
40
41
42
43
44
45
46
47
48
49
67
51
52
53
54
55
56
57
58
59
60
35
32
36
61
62
63
64
65
66
10
38
50
68
75
70
69
72
71
73
74
76
77
5 – 4A
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