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Model
MX-6240N MX-7040N (serv.man32)
Pages
49
Size
6.45 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Section 13 Operational Descriptions - Updated November 2012
File
mx-6240n-mx-7040n-sm32.pdf
Date
PREV: Sharp MX-6240N / MX-7040N (serv.man31) Service Manual

Sharp MX-6240N / MX-7040N (serv.man32) Service Manual ▷ View online

MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 21
(4)
PS lower unit
Signal name
Name
Function/Operation
LCCM
LCC transport motor
Drives the LCC transport section and the PS lower section.
 No.
Name
Function/Operation
 1
Transport roller 13 (Drive)
Transports paper to the transport roller 17.
LCCM
1
DRIVER PWB
XHP-6
B6B-P
ASK-1
P
AP-06V
-S
CN-8
1
3
5
6
4
2
+24V
+24V
LCCM_/A
LCCM_/B
LCCM_B
LCCM_A
+24V
+
24
V
B6B-XH-A
LCCM_A
LCCM_/A
LCCM_B
LCCM_/B
5
6
4
3
2
1
CN-8
502790-6491
POM_XA
POM_A
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM2_A
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
502790-6491
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
FUMCM_A
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
GND
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
CN-10
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
2
3
4
5
6
1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
61
62
63
64
POM_XA
POM_A
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM2_A
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
GND
FUMCM_A
FU
MCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
PCU PWB
MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 22
(5)
PS unit
B. Operational descriptions
Transport paper from each paper feed section to the registration roller with two or more transport rollers. The paper transport clutch controls
ON/OFF of each transport roller. The registration roller controls the relative positions of the transported paper and transfer images.
The registration roller controls the relative positions of the transported paper and transfer images. The registration roller is driven by the trans-
port motor. The relative positions of the paper and the transfer images are determined by the ON timing of the transport motor. 
Signal name
Name
Function/Operation
PFM
Transport motor
Transports and drives the registration roller. 
PPD1
Registration pre-pre-detection
Detects the paper in front of transport roller 17.
PPD2
Registration pre-detection
Detects the paper in front of registration roller.
RRM
Registration motor
Drives the registration roller and controls ON/OFF.
 No.
Name
Function/Operation
 1
Transport roller 17 (Drive)
Transports paper from transport roller 13 to registration roller.
 2
Registration roller (Drive)
Transports paper to the transfer section. Controls the transport timing of paper, and adjusts the relative 
relations between images and paper.
 3
Registration roller (Idle)
Apply a pressure to paper and the registration roller to provide the transport power of the transport roller to 
paper.
3
PPD2
2
PPD1
1
PFM
RRM
1
3
5
7
9
11
12
10
8
6
4
2
CN-7
B12B-CZHK-1
12CZ-6H
12CZ-6H
CZHR-12V-S
PFM_B
PFM_/B
PFM_/A
PFM_A
+24V
+24V
RRM_B
RRM_/B
RRM_/A
RRM_A
+24V
+24V
PHR-6
XAP-6
BU12P-TZ-S
12
11
10
9
8
7
2
3
4
5
6
1
1
2
5
6
8
9
11
10
4
3
12
7
PFM_B
PFM_/B
PFM_/A
PFM_A
+24V
+24V
RRM_B
RRM_/B
RRM_/A
RRM_A
+24V
+24V
1
2
3
4
5
6
PFM_/A
+24V
PFM_/B
PFM_A
+24V
PFM_B
B6B-PH-K-S
1
2
3
4
5
6
+24V
+24V
RRM_A
RRM_/A
RRM_B
RRM_/B
S06B-XASK-1
1
2
5
6
4
3
8
9
7
5VNPD
GND
PTD
5VNPD
PPD2
GND
GND
PPD1
5VNPD
2
1
3
5VNPD
PPD2
GND
5VNPD+R
PPD1
GND
1
2
3
03XR-6H-P
03XR-6H-P
A-4
A-5
A-6
A-7
A-8
A-9
A-10
A-11
A-12
5VNPD
GND
PTD
5VNPD
PPD2
GND
GND
PPD1
5VNPD
1
9
8
7
2
3
4
5
6
CN-13
B24B-CZWHK-B-1
09CZ-6H
09CZ-6H
BU09P-TZ-S
12CZ-6Y
DRIVER PWB
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
2
3
4
5
6
1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
61
62
63
64
PCU PWB
GND
POM_XA
POM_A
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM2_A
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
CN-8
FUMCM_A
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
FUMCM_A
FUMCM_B
FUMCM_XA
FUMCM_XB
PRM_A
PRM_B
PRM_XA
POM_XA
POM_A
POM_B
POM_CNT
POM_XB
ADUM1_XA
ADUM1_XB
ADUM1_A
ADUM1_B
ADUM2_A
ADUM2_B
ADUM1_CNT
ADUM2_XA
ADUM2_XB
ADUM2_CNT
PFM_CLK
PFM_CNT
PFM_EN
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
PRM_XB
RRM_CLK
RRM_EN
RRM_CNT1
RRM_CNT2
502790-6491
502790-6491
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
LCCM_A
LCCM_B
LCCM_XA
LCCM_XB
LCCM_CNT
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
GND
TNHM_A
TNHM_B
TNHM_/A
TNHM_/B
TNHM_Y_EN
TNHM_M_EN
TNHM_C_EN
TNHM_K_EN
TNM_K_A
TNM_K_B
TNM_K_/A
TNM_K_/B
TNM_C_A
TNM_C_B
TNM_C_/A
TNM_C_/B
TNM_M_A
TNM_M_B
TNM_M_/A
TNM_M_/B
TNM_Y_A
TNM_Y_B
TNM_Y_/A
TNM_Y_/B
CN-10
MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 23
6. LSU section
A. Electrical and mechanical relation diagram
LD PWB
2
3
4
5
6
1
10
11
12
13
14
15
16
17
18
19
20
9
7
8
21
22
23
24
D-GND
D
-
GND
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
CH0_N
CH0_P
CH1_N
CH1_P
CH2_P
CH2_N
CH3_P
CH3_N
CH4_N
CH4_P
CLK_N
CLK_P
ECLK_LSU_N
ECLK_LSU_P
HSYNC_LSU_P
HSYNC_LSU_N
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
D-GND
D
-
GND
D-GND
D-GND
VSYNC_Y_P
VSYNC_Y_N
VSYNC_M_N
VSYNC_M_P
VSYNC_C_P
VSYNC_C_N
VSYNC_K_N
VSYNC_K_P
D-GND
D-GND
D-GND
D-GND
BM40B-SHLDS-G-TFT
CN-1
SHLDP-40V
-S-1(B)
P
AP-06V
-S
P
AP-06V
-S
D-GND
+3.3.V
P-GND
+24V
+5V
D-GND
B06B-P
ASK-1
1
4
5
6
SHLDP-40V
-S-1(B)
B06B-P
ASK-1
D-GND
+3.
3.V
P-GND
+24V
+5V
D-GND
1
4
5
6
LSU PWB
BM40B-SHLDS-G-TFT
CN-5
5VO
PRTPD_out
TxD_PCU
RxD_PCU
RES_PCU
RTS_PCU
CTS_PCU
/POF
GND
GND
B20B-PNDZS-1
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
CH0_N
CH0_P
CH1_N
CH1_P
CH2_P
CH2_N
CH3_P
CH3_N
CH4_N
CH4_P
CLK_N
CLK_P
ECLK_LSU_N
ECLK_LSU_P
HSYNC_LSU_P
HSYNC_LSU_N
D-GND
D-GND
D-GND
D-GND
VSYNC_Y_P
VSYNC_Y_N
VSYNC_M_N
VSYNC_M_P
VSYNC_C_P
VSYNC_C_N
VSYNC_K_N
VSYNC_K_P
D-GND
D-GND
D-GND
D-GND
PNDP-20V
-Z
20CZ-6H
5VNPD
GND
GND
5VO
PRTPD_out
TxD_PCU
RxD_PCU
RES_PCU
RTS_PCU
CTS_PCU
/POF
5VNPD
5VNPD
GND
GND
2
3
4
5
6
1
10
11
12
13
14
15
16
17
18
19
20
9
7
8
21
22
23
24
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1
3
5
7
9
11
12
10
8
6
4
2
13
14
MOTHER PWB
SCN
2
3
2
3
ACK
REQ
S20B-CZHK-B-1
1
2
5
6
9
10
1
1
12
13
14
15
16
17
18
19
20
4
3
8
7
SCK_LSU
(
NC)
nTRANS_D
A
T
GND
GND
nRSV_D
A
T
LSU_RST
nTRANS_RST
JOBEND_INT
nJOBEND_INT_Y
nJOBEND_INT_M
nJOBEND_INT_C
nJOBEND_INT_K
TH1_LSU
nPCU_TRG
TH2_LSU
(NC)
(NC)
GND
GND
SCK_LSU
GND
(NC)
nTRANS_D
A
T
GND
nRSV_D
A
T
LSU_RST
nTRANS_RST
JOBEND_INT
nJOBEND_INT_Y
nJOBEND_INT_M
nJOBEND_INT_C
nJOBEND_INT_K
TH1_LSU
nPCU_TRG
TH2_LSU
B30B-PNDZS
PNDP-30V
-Z
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CS_Y_AK2
CS_EEP_Y_AK2
CS_Y_AK1
CS_EEP_Y_AK1
CS_M_AK2
CS_EEP_M_AK2
CS_M_AK1
CS_EEP_M_AK1
CS_C_AK2
CS_EEP_C_AK2
CS_C_AK1
CS_EEP_C_AK1
CS_K_AK2
CS_EEP_K_AK2
CS_K_AK1
CS_EEP_K_AK1
AK_RXD
AK_TXD
AK_SCLK
GND
INT5V_LD
VREF2
VREF2
INT5V_LD
5VNPD
SC_ACK
PCU_REQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CN-22
CN-25
B15B-CSRK
B15B-CSRK
15CSR-8PK
(NC)
(NC)
(NC)
15CSR-8PK
15
B
U20P-TZ-S
20CZ-6H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CS_Y_AK2
CS_EEP_Y_AK2
CS_Y_AK1
CS_EEP_Y_AK1
CS_M_AK2
CS_EEP_M_AK2
CS_M_AK1
CS_EEP_M_AK1
CS_C_AK2
CS_EEP_C_AK2
CS_C_AK1
CS_EEP_C_AK1
CS_K_AK2
CS_EEP_K_AK2
CS_K_AK1
CS_EEP_K_AK1
AK_RXD
AK_TXD
AK_SCLK
GND
PCU PWB
AK_RXD
AK_TXD
AK_SCLK
GND
1
2
3
4
5
6
7
8
9
1
0
1
1
12
13
14
15
16
17
18
19
20
20CZ-6H
20CZ-6H
B20B-CZHK-B-1
CN-24
1
2
20
19
4
18
17
16
15
14
13
12
11
10
9
8
7
6
3
5
CN-1018
CN-1017
CN-1019
AK_CS_EEP_K1
AK_CS_K1
AK_CS_EEP_K2
AK_CS_K2
AK_CS_EEP_C1
AK_CS_C1
AK_CS_EEP_C2
AK_CS_C2
AK_CS_EEP_M1
AK_CS_M1
AK_CS_EEP_M2
AK_CS_M2
AK_CS_EEP_Y1
AK_CS_Y1
AK_CS_EEP_Y2
AK_CS_Y2
Reserve_IN2
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
2
3
4
5
6
1
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
99
100
91
92
93
94
95
96
97
98
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
TX24-120R-6ST
-H1E
D-GND
TH1
T
H2
D-GND
D-GND
nBD
+24V1
+24V1
+24V1
P-GND
P-GND
P-GND
nPOL
Y_CK
nPOL
Y_LOCK
nPOL
Y_ST
A
R
T
nBRAKE
F
AN_24V
F
AN_nREAD
Y
P-GND
#P2_AK2
#P1_AK2
#P0_AK2
SDCLK
P4_Y_AK2
P3_Y_AK2
nINT_Y_AK2
MSET_Y_AK2
P4_Y_AK1
P3_Y_AK1
nINT_Y_AK1
MSET_Y_AK1
nLDERR_Y
P4_M_AK2
P3_M_AK2
nINT_M_AK2
MSET_M_AK2
P4_M_AK1
P3_M_AK1
nINT_M_AK1
nLDERR_M
MSET_M_AK1
P4_C_AK2
P3_C_AK2
nINT_C_AK2
MSET_C_AK2
P4_C_AK1
P3_C_AK1
nINT_C_AK1
nLDERR_C
MSET_C_AK1
D-GND
P4_K_AK2
P3_K_AK2
nINT_K_AK2
MSET_K_AK2
P4_K_AK1
P3_K_AK1
nINT_K_AK1
nLDERR_K
MSET_K_AK1
D-GND
WP_Y
SCL_Y
SD
A_Y
WP_M
SCL_M
SD
A_M
D-GND
D-GND
WP_C
SCL_C
SD
A_C
WP_K
SCL_K
SD
A_K
D-GND
D-GND
5VLD
5VLD
D-GND
D-GND
5VLD
DT_Y3+
DT_Y3-
DT_Y4+
DT_Y4-
DT_Y1+
DT_Y1-
DT_Y2+
DT_Y2-
DT_M3+
DT_M3-
DT_M4+
DT_M4-
DT_M1+
DT_M1-
DT_M2+
DT_M2-
DT_C3+
DT_C3-
DT_C4+
DT_C4-
DT_C1+
DT_C1-
DT_C2+
DT_C2-
DT_K3+
DT_K3-
DT_K4+
DT_K4-
DT_K1+
DT_K1-
DT_K2+
#P2_AK1
#P1_AK1
#P0_AK1
DT_K2-
CNCHK
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
2
3
4
5
6
1
D-GND
TH1
TH2
D-GND
D-GND
nBD
+24V1
+24V1
+24V1
P-GND
P-GND
P-GND
nPOL
Y_CK
nPOL
Y_LOCK
nPOL
Y_ST
A
R
T
nBRAKE
F
AN_24V
F
AN_nREAD
Y
P-GND
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
99
100
91
92
93
94
95
96
97
98
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
CNCHK
D-GND
3.3V
WP_Y
SCL_Y
SD
A_Y
WP_M
SCL_M
SD
A_M
D-GND
D-GND
WP_C
SCL_C
SD
A_C
WP_K
SCL_K
SD
A_K
D-GND
D-GND
5VLD
5VLD
TX25-120P-6ST
-H1E
D-GND
D-GND
5VLD
DT_Y3+
DT_Y3-
DT_Y4+
DT_Y4-
DT_Y1+
DT_Y1-
DT_Y2+
DT_Y2-
DT_M3+
DT_M3-
DT_M4+
DT_M4-
DT_M1+
DT_M1-
DT_M2+
DT_M2-
DT_C3+
DT_C3-
DT_C4+
DT_C4-
DT_C1+
DT_C1-
DT_C2+
DT_C2-
DT_K3+
DT_K3-
DT_K4+
DT_K4-
DT_K1+
DT_K1-
DT_K2+
#P2_AK1
#P1_AK1
#P0_AK1
DT_K2-
CNCHK
#P2_AK2
#P1_AK2
#P0_AK2
SDCLK
P4_Y_AK2
P3_Y_AK2
nINT_Y_AK2
MSET_Y_AK2
P4_Y_AK1
P3_Y_AK1
nINT_Y_AK1
MSET_Y_AK1
nLDERR_Y
P4_M_AK2
P3_M_AK2
nINT_M_AK2
MSET_M_AK2
P4_M_AK1
P3_M_AK1
nINT_M_AK1
nLDERR_M
MSET_M_AK1
P4_C_AK2
P3_C_AK2
nINT_C_AK2
MSET_C_AK2
P4_C_AK1
P3_C_AK1
nINT_C_AK1
nLDERR_C
MSET_C_AK1
D-GND
P4_K_AK2
P3_K_AK2
nINT_K_AK2
MSET_K_AK2
P4_K_AK1
P3_K_AK1
nINT_K_AK1
nLDERR_K
MSET_K_AK1
CN-4
3.3V
3.3V
CN-500
CN-2
CN-3
S3B-PH-K-S
CN-3
PHNR-3
2
P-GND
F
AN_
24V
F
AN_nREAD
Y
1
3
CN1
B05B-P
ASK-1
P
AP-05V
-S
3
5
4
2
1
TH
D-GND
D-GND
5VD
BD
PHR-6
PHR-6
+24V1
P-GND
nBRAKE
nPOLY_CK
nPOLY_LOCK
nPOLY_START
B6B-PH-K-S
3
2
1
4
5
6
6
5
4
3
2
1
+24V1
P-GND
nBRAKE
nPOLY_CK
nPOLY_LOCK
nPOLY_START
CN-2
S6B-PH-K-S
4
3
B04B-PH-K-S
CN1
D-GND
TH
PHR-4
30
29
SMR-02V-N SMP-02V-NC
INT24V2
1
2
1
2
LSUSS_CL
LSUSS_CL
B30B-PNDZS
INT242
CN-25
PCU PWB
CN-1
S7B-PH-K-S
6
5
4
3
2
1
7
D-GND
D-GND
D-GND
nBD
TH1
TH2
+5V
O
PHR-7
PGM
LSUFM
LSUSS_CL
1
9
6
6
6
8
2
11
10
7
5
5
12
12
6
3
4
MX-7040N  OPERATIONAL DESCRIPTIONS  13 – 24
Signal name
Name
Function/Operation
LSUFM
LSU cooling fan motor
Cools the section LSU.
LSUSS_CL
LSU shutter solenoid
Opens/closes the LSU shutter.
PGM
Polygon motor
Reflects the laser beams at constant-speed rotating.
TH1_LSU
LSU temperature sensor 1
Detects the temperature in the LSU.
TH2_LSU
LSU temperature sensor 2
Detects the temperature in the LSU.
 No.
Name
Function/Operation
 1 
LD PWB 
Controls drive and power of the laser diode.
 2 
Cylindrical lens
Converges laser beams, and focuses on the polygon mirror. (sub scanning direction)
 3 
f
 lens 1
Converges laser beams on the OPC drum, making the laser scan speeds at both ends and the center the same.
 4 
f
 lens 2
 5 
Reflection mirror
Assures the optical path for laser.
 6 
f
 lens 3
Converges laser beams on the OPC drum, making the laser scan speeds at both ends and the center the same.
 7 
Collective lens for BD
Converges laser beams to the BD PWB.
 8 
BD PWB 
Detects the timing for starting laser scanning.
 9 
LSU control PWB 
Laser beams are controlled and the polygon motor control signal is generated according to the PCU PWB control 
signal and the MFPC PWB image data.
 10
LSU thermistor 1
Measures the temperature in LSU.
 11
Collimator lens
Arranges laser beams.
 12
Skew adjustment screw
This screw is used to adjust the radiation angle of laser beams for the OPC drum. By turning this adjustment screw, 
the image skew can be adjusted.
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