Samsung SCX-8030ND User manual

Service Manual
Digital Laser MFP
SCX-8030ND / 8040ND series
1. Print / Copy speed
• SCX-8030ND : 30 ppm (A4)
• SCX-8040ND : 40 ppm (A4)
2. 800 MHz CPU
3. 250GB HDD
4. 512 MB Memory (Max. 1GB)
5. 8.9 inch color graphic touch-screen LCD
6. Various option units
• 3K Booklet finisher, 1K Standard finisher
DCF, HCF, Punch unit , Multi fax etc.
The keynote of Product

ⓒ
Samsung Electronics Co.,Ltd. August. 2010
Printed in Korea.
VERSION NO. : 0.04 CODE : 80x0-00000E
GSPN (Global Service Partner Network)
Area Web Site
Europe,MENA, CIS,
Africa https://gspn1.samsungcsportal.com
E.Asia, W.Asia,
China, Japan https://gspn2.samsungcsportal.com
N.America,
S.America https://gspn3.samsungcsportal.com

1.1 Safety Warning …………………………………………………… 1-1
1.2 Caution for safety ………………………………………………… 1-2
1.3 ESD Precautions ………………………………………………… 1-5
2.1 Specifications …………………………………………………… 2-1
2.2 System configuration …………………………………………… 2-7
2.3 Sensor location …………………………………………………… 2-16
2.4 Paper handling section ………………………………………… 2-20
2.4.1 Overview……………………………………………………… 2-20
2.4.2 Components ………………………………………………… 2-23
2.4.3 Functions …………………………………………………… 2-24
2.4.4 Paper tray …………………………………………………… 2-25
2.4.5 Pick up unit…………………………………………………… 2-26
2.4.6 Registration unit …………………………………………… 2-27
2.4.7 MPF unit……………………………………………………… 2-28
2.5 Image formation ………………………………………………… 2-29
2.5.1 Printing process overview ………………………………… 2-29
2.5.2 Imaging unit ………………………………………………… 2-30
2.6 Fuser unit ………………………………………………………… 2-34
2.6.1 Fuser unit overview ………………………………………… 2-34
2.6.2 Fuser unit components……………………………………… 2-35
2.6.3 Fuser unit drive ……………………………………………… 2-36
2.6.4 Temperature control ………………………………………… 2-37
2.7 Laser scanning unit ……………………………………………… 2-38
2.7.1 Laser scanning unit overview ……………………………… 2-38
2.7.2 Laser scanning optical path………………………………… 2-39
2.7.3 Laser synchronizing detectors …………………………… 2-40
2.8 Printer Drive system……………………………………………… 2-41
chapter 1 Precautions
chapter 2 Product decription
Contents

2.8.1 Drive Motors ………………………………………………… 2-41
2.8.2 Main drive unit (OPC, DEVE, MP, REGI, DUPLEX) …… 2-43
2.8.3 Pick-up Drive ………………………………………………… 2-44
2.8.4 Fuser /Exit Drive …………………………………………… 2-45
2.8.5 Toner Duct Drive …………………………………………… 2-46
2.8.6 Drive of Toner Supply ……………………………………… 2-46
2.8.7 WTB leveling drive ………………………………………… 2-46
2.8.8 PR Release drive …………………………………………… 2-47
2.9 Scanner system ………………………………………………… 2-48
2.9.1 Scannner system overview ………………………………… 2-48
2.9.2 Scanning System components …………………………… 2-49
2.10 DADF system …………………………………………………… 2-51
2.10.1 DADF systme overview …………………………………… 2-51
2.10.2 Electric parts layout ………………………………………… 2-52
2.10.3 Description of drive system operations…………………… 2-53
2.11 Printer Electronics configuration ……………………………… 2-59
2.11.1 Video controller …………………………………………… 2-62
2.11.2 OPE controller …………………………………………… 2-70
2.11.3 Engine controller ………………………………………… 2-74
2.11.4 Scan controller …………………………………………… 2-77
2.11.5 DADF controller…………………………………………… 2-78
2.11.6 Interface part ……………………………………………… 2-79
2.11.7 Connection part…………………………………………… 2-79
2.11.8 SMPS board ……………………………………………… 2-80
2.11.9 HVPS board ……………………………………………… 2-82
2.11.10 Eraser PBA ……………………………………………… 2-83
2.11.11 DC Power PBA …………………………………………… 2-83
2.11.12 Cassette Joint PBA ……………………………………… 2-84
2.11.13 Side Joint PBA …………………………………………… 2-84
2.11.14 Toner Connector PBA …………………………………… 2-85
2.11.15 CRUM PBA ……………………………………………… 2-86
2.11.16 Development Crum Interface PBA……………………… 2-86
2.11.17 Deve Crum Joint PBA …………………………………… 2-87
2.11.18 Toner Curm Joint PBA …………………………………… 2-87
Contents

chapter 3 Replacement procedure
2.11.19 Fuser PBA ………………………………………………… 2-87
2.11.20 Waste Sensor PBA ……………………………………… 2-88
2.11.21 LED Panel PBA…………………………………………… 2-88
2.11.22 Scan Joint PBA…………………………………………… 2-89
2.11.23 CCDM PBA ……………………………………………… 2-90
2.11.24 Scan Cover Open Sensor PBA ………………………… 2-91
2.11.25 DADF Length Sensor PBA ……………………………… 2-91
2.11.26 DADF Width Sensor PBA ……………………………… 2-92
2.11.27 DADF Mixed Sensor PBA ……………………………… 2-92
2.11.28 DADF LED Panel PBA…………………………………… 2-93
2.11.29 Exit LED Panel PBA……………………………………… 2-93
2.12 Heating cables ………………………………………………… 2-94
3.1 General Disassembly Procedure Precautions ………………… 3-1
3.2 Cover ……………………………………………………………… 3-2
3.2.1 Front cover…………………………………………………… 3-2
3.2.2 Left cover …………………………………………………… 3-3
3.2.3 Rear cover …………………………………………………… 3-3
3.2.4 Right cover…………………………………………………… 3-4
3.3 OPE unit…………………………………………………………… 3-5
3.4 Scan unit ………………………………………………………… 3-10
3.4.1 Scan glass …………………………………………………… 3-11
3.4.2 Scan main PBA……………………………………………… 3-12
3.4.3 Lamp ………………………………………………………… 3-13
3.4.4 Original size detection sensor……………………………… 3-15
3.4.5 Joint PBA …………………………………………………… 3-15
3.4.6 Joint sub PBA ……………………………………………… 3-16
3.4.7 Fan …………………………………………………………… 3-16
3.4.8 Pulley-belt …………………………………………………… 3-17
3.4.9 Scan motor and gear belt ………………………………… 3-18
Contents

3.4.10 Home sensor ……………………………………………… 3-18
3.4.11 Scanner heating cable …………………………………… 3-19
3.4.12 Align set …………………………………………………… 3-23
3.5 Fuser unit ………………………………………………………… 3-24
3.6 Side Unit…………………………………………………………… 3-35
3.6.1 Duplex sensors ……………………………………………… 3-36
3.7.2 Transfer sensors …………………………………………… 3-37
3.7.3 MP unit ……………………………………………………… 3-39
3.7 Electrical components …………………………………………… 3-44
3.7.1 Engine controller …………………………………………… 3-44
3.7.2 Hard Disk Drive (HDD)……………………………………… 3-45
3.7.3 Video controller ……………………………………………… 3-46
3.7.4 Joint PBA …………………………………………………… 3-47
3.7.5 Toner PBA …………………………………………………… 3-47
3.7.6 Toner motor ………………………………………………… 3-48
3.7.7 DC power PBA ……………………………………………… 3-49
3.7.8 HVPS PBA…………………………………………………… 3-50
3.7.9 Lift motor …………………………………………………… 3-51
3.7.10 SMPS PBA ………………………………………………… 3-52
3.7.11 SMPS FAN ………………………………………………… 3-53
3.7.12 Ozone Filter FAN ………………………………………… 3-55
3.7.13 Side joint PBA ……………………………………………… 3-56
3.7.14 Eraser Lamp ……………………………………………… 3-57
3.7.15 Waste sensor PBA ………………………………………… 3-58
3.7.16 Temperature sensor ……………………………………… 3-58
3.8 Main drive unit …………………………………………………… 3-60
3.8.1 Main drive motor …………………………………………… 3-62
3.8.2 Main drive clutch …………………………………………… 3-62
3.9 Exit drive unit …………………………………………………… 3-63
3.10 Toner Duct drive unit …………………………………………… 3-65
3.11 PR Release drive unit ………………………………………… 3-66
3.12 Pick-up drive unit………………………………………………… 3-67
3.13 WTB leveling drive unit ………………………………………… 3-68
3.14 LSU (Laser Scanning Unit) …………………………………… 3-71
Contents

chapter 4 Troubleshooting
Contents
3.15 Frame Duct …………………………………………………… 3-74
3.16 DADF Unit ……………………………………………………… 3-75
3.16.1 Width / Length sensor PBA ……………………………… 3-84
3.16.2 DADF Main PBA…………………………………………… 3-85
3.16.3 DADF Motors ……………………………………………… 3-87
3.16.4 DADF cover open sensor ………………………………… 3-90
3.16.5 Pick-Up Guide Sensor PBA ……………………………… 3-91
3.16.6 DADF Solenoid …………………………………………… 3-93
3.17 Exit Unit ………………………………………………………… 3-94
3.18 Regi. Unit ……………………………………………………… 3-96
3.19 Pick-Up Unit …………………………………………………… 3-98
3.20 Cassette Heating Cable ……………………………………… 3-100
4.1 Entering/Exiting Diagnostics Mode……………………………… 4-1
4.2 Serive mode menu tree…………………………………………… 4-2
4.2.1 Information tab ……………………………………………… 4-2
4.2.2 Maintenance counts tab …………………………………… 4-4
4.2.3 Diagnostics tab …………………………………………… 4-5
4.2.4 Service Functions ………………………………………… 4-5
4.3 Information ………………………………………………………… 4-6
4.3.1 General ……………………………………………………… 4-6
4.3.2 Supply status ……………………………………………… 4-6
4.3.3 Software version …………………………………………… 4-8
4.3.4 Service Hours ……………………………………………… 4-8
4.3.5 Fault Log …………………………………………………… 4-8
4.3.5 Print reports ………………………………………………… 4-8
4.4 Maintenance Counts …………………………………………… 4-9
4.4.1 Fault count ………………………………………………… 4-9
4.4.2 Jam count …………………………………………………… 4-10
4.4.3 Part replacement count …………………………………… 4-12
4.5 Diagnotics ………………………………………………………… 4-13

Contents
4.5.1 Engine diagnostics ………………………………………… 4-13
4.5.1.1 NVM Read/Write ……………………………………… 4-13
4.5.1.2 Engine Test Routines ………………………………… 4-13
4.5.2 Fax diagnostics …………………………………………… 4-14
4.5.2.1 Fax NVM Read/Write ………………………………… 4-14
4.5.2.2 Fax Test Routines ……………………………………… 4-15
4.5.3 Scanner diagnostics ……………………………………… 4-17
4.5.3.1 Shading Test ………………………………………… 4-17
4.5.3.2 Scanner/DADF NVM Read/Write …………………… 4-17
4.5.3.3 Scanner/DADF Test Routines ……………………… 4-18
4.5.4 Adjustment ………………………………………………… 4-20
4.5.4.1 Print Adjustment ……………………………………… 4-20
4.5.4.2 Copy Adjustment ……………………………………… 4-22
4.5.4.3 Scan Area Adjustment ………………………………… 4-23
4.5.4.4 DADF Adjustment ……………………………………… 4-25
4.5.4.5 Finisher Adjustment …………………………………… 4-27
4.5.5 ACS ………………………………………………………… 4-30
4.5.6 Color Management ………………………………………… 4-31
4.6 Sevice functions ………………………………………………… 4-32
4.6.1 Main Memory Clear ………………………………………… 4-32
4.6.2 Hard Disk Maintenance …………………………………… 4-32
4.6.3 Debug Log …………………………………………………… 4-32
4.6.4 Port …………………………………………………………… 4-33
4.6.5 Capture Log ………………………………………………… 4-33
4.6.6 Toner Save ………………………………………………… 4-33
4.6.7 Count Setting of Large Page ……………………………… 4-33
4.6.8 System Recovery …………………………………………… 4-33
4.6.9 User Data Management …………………………………… 4-34
4.6.10 TR Control Mode ………………………………………… 4-35
5.1 Updating from the Printer Control Panel ……………………… 5-2
5.2 Updating from the Network …………………………………… 5-8
chapter 5 Updating Firmware

Contents
6.1 PM Supplies ……………………………………………………… 6-1
6.2. PM Procedures ………………………………………………… 6-5
6.2.1 Toner cartridge ……………………………………………… 6-5
6.2.2 Imaging unit ………………………………………………… 6-7
6.2.3 2nd Transfer roller ………………………………………… 6-11
6.2.4 Fuser Unit …………………………………………………… 6-12
6.2.5 Pick up/ Retard/ Forward roller …………………………… 6-13
6.2.6 Ozone Filter ………………………………………………… 6-13
6.2.7 DADF Rollers (Pick up /ADF/ Retard) …………………… 6-14
6.2.8 MP Pick up / Retard / Forward roller …………………… 6-19
6.2.9 Scanner Fan Filter ………………………………………… 6-21
6.3. Cleaning the PM parts ………………………………………… 6-22
6.3.1 Cleaning the charge scorotron …………………………… 6-22
6.3.2 Cleaning the pick up roller ………………………………… 6-22
6.3.3 Cleaning the Regi roller …………………………………… 6-23
6.3.4 Cleaning the tray1 feed roller ……………………………… 6-23
6.3.5 Cleaning the tray2 feed roller ……………………………… 6-24
6.3.6 Cleaning the DADF retard rubber pad …………………… 6-25
6.3.7 Cleaning the DADF rollers ………………………………… 6-26
6.3.7 Cleaning the ADF glass …………………………………… 6-27
7.1 Procedure of checking the symptoms ………………………… 7-1
7.2 Error code and troubleshooting ………………………………… 7-3
7.2.1 Error code and error message …………………………… 7-3
7.2.2 Error Code Details ………………………………………… 7-11
7.3 Image quality problems and solutions ………………………… 7-101
7.3.1 Vertical Lines ………………………………………………… 7-102
7.3.2 Horizontal Lines……………………………………………… 7-103
7.3.3 White spot …………………………………………………… 7-104
7.3.4 Black background ………………………………………… 7-105
7.3.5 Blurred image ……………………………………………… 7-106
chapter 6 Preventive Maintenance (PM)
chapter 7 Troubleshooting

Contents
7.3.6 Uneven pitch and jitter image ……………………………… 7-107
7.3.7 Skewed image ……………………………………………… 7-108
7.3.8 Low image density ………………………………………… 7-109
7.3.9 Blank copy, Black copys …………………………………… 7-110
7.3.10 Uneven density in sub scan direction …………………… 7-112
7.3.11 Uneven density in main scan direction ………………… 7-113
7.3.12 Poor fusing performance ………………………………… 7-114
7.3.13 Stain on the paper back side …………………………… 7-115
7.3.14 DADF skew testing ……………………………………… 7-116
7.4 Other Errors ……………………………………………………… 7-121
8.1 Engine 1…………………………………………………………… 8-1
8.2 Engine 2…………………………………………………………… 8-2
8.3 Main board & OPE ……………………………………………… 8-3
8.4 Scan & DADF …………………………………………………… 8-4
8.5 Bottle joint board & side joint board …………………………… 8-5
8.6 DC control board ………………………………………………… 8-6
8.7 Cassette joint board & Drive joint board ……………………… 8-7
8.8 Heater & Fuse …………………………………………………… 8-8
9.1 Entry Point ………………………………………………………… 9-1
9.2 USB ………………………………………………………………… 9-2
9.3 Network …………………………………………………………… 9-4
9.4 Confirmation Page ……………………………………………… 9-5
9.5 Error Page ………………………………………………………… 9-6
9.6 Progress Page …………………………………………………… 9-7
9.7 Error List …………………………………………………………… 9-8
9.8 HDD Repair ……………………………………………………… 9-8
9.9 HDD Failure ……………………………………………………… 9-10
chapter 9 System Recovery
chapter 8 System Diagram