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2.3.3 Top Cover Unit

(1) Remove the top cover (see section 2.3.1).

(2) Remove the rear cover (see section 2.3.10).

(3) Remove the left side cover (see section 2.3.12).

(4) Remove the right side cover (see section 2.3.13).

(5) Remove the shield plates A and B (see section 2.3.23), and unplug the connector to separate

the top cover.

(6) Disengage the top cover unit 1 at two places to detach it.

Figure 2-3-3 Top Cover Unit

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 195 196

AR -C 240P 1
CONTENTS 3
1. CONFIGURATIONS 6
1.1 System Configuration 6
1.2 Printer Configuration 7
1.3 Supplies and Consumables 8
Option Configuration 9
1.4 Specifications 10
2. OPERATION DESCRIPTION 12
2.1 Main Board (TIG PWB) 13
2.3 Power Units 16
Disconnect 17
[Maintenance Tools] 18
Table 2-1 Maintenance Tools 18
2.2 Parts layout 19
For 600dpi 20
[Printer Unit-1/2] 21
Figure 2-3 21
[Printer Unit-2/2] 22
Figure 2-4 22
[Cassette Guide Assy (L),(R)] 23
Figure 2-5 23
[Duplex Unit] 24
Figure 2-6 24
2.3 Replacing Parts 25
2.3.1 Top Cover 27
(1) Open the Top Cover assy 27
Figure 2-3-1 Top Cover 27
2.3.6 Eject Guide Assy 32
(1) Remove the cassette 1 34
2.3.11 Face-Up Tray 37
Figure 2-3-11 Face-Up Tray 37
2.3.15 Drum Contact Assys 41
Stage height adjustment jig 43
Top surface 43
2.3.20 Main Cooling Fan 46
Connectors 47
2.3.22 Duplex Guide Assy 48
Main chassis 52
2.3.27 Entrance Sensor PWB 53
2.3.30 Exit Sensor Assy 56
2.3.42 Fuser Unit 68
(1) Open the top cover 1 68
Figure 2-3-42 Fuser Unit 68
2.3.44 Duplex Unit 70
Figure 2-3-44 Duplex Unit 70
3. ADJUSTMENT 76
3.0 System Maintenance MENU 76
Maintenance Menu 78
SWITCH SCAN 80
MOTOR & CLUTCH TEST 84
BLACK - ID MOTOR 84
Figure 3-3 85
Table 3-2 85
TEST PATTERN 86
Pattern 5 Pattern 6 88
Pattern 7 88
MTR=*.**KV CTR=*.**KV 89
P=*** T=*** U=***[###] 89
H=***% L=***[###] 89
KTR=*.**KV YTR=*.**KV 89
NV-RAM INITIAL 90
TOTAL SHEETS FEED 91
BLACK IMPRESSIONS 91
YELLOW IMPRESSIONS 91
MAGENTA IMPRESSIONS 91
CYAN IMPRESSIONS 91
3.1.2.9 Panel display details 92
Panel display 92
Details of jam error display 96
Value Check 101
Measurement point 104
2-Character correction value 108
Code content Barcode 108
5. TROUBLESHOOTING PROCEDURES 111
5.5 Troubleshooting Procedure 112
Back-up roller thermister 128
Heat roller thermister 128
DIAGNOSTIC MODE 139
XX.XX.XX 139
Charge Roller 144
Developing Roller 144
Toner Supply Roller 144
5.6 Fuse check 145
6. CONNECTION DIAGRAM 146
6.1 Resistance Checks 146
Feeder Motor 148
Duplex Motor 148
6.2 Program/Font ROM Layouts 150
(2) Main Controller PWB 152
(6) N71 PWB 154
Item Description 156
INPUT. PRIME 157
ACKNOWLEDGE 157
1. Parts Replacement 160
APPENDIX C ERROR MESSAGES 165
1. Error messages 165
5. Other Warnings 177
PARTS GUIDE 179
(1) Main Assembly 1/3 181
(1) Main Assembly 2/3 182
(1) Main Assembly 3/3 183
(2) Top Cover Assembly 185
(2) Top Cover Assembly 186
(3) Printer Unit Chassis 1/2 187
(3) Printer Unit Chassis 2/2 188
(3) Printer Unit Chassis 189
(4) Paper Tray Guide 191
(4)Paper Tray Guide 192
(5)Duplex Unit 193
(5) Duplex Unit 194

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Sharp AR-C240P Specifiche Pagina 29

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