Samsung CLX-9252 Series User manual

A3 Color Copier
CLX-9252/9352 series
SERVICE MANUAL
A3 Color Copier Contents
1. Precautions
2. Product Description
3. Replacement Procedure
4. Service Mode
5. Updating Firmware
6. Preventive Maintenance
7. Troubleshooting
8. System Diagram
9. System Recovery
10. Reference Information

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 …………………………………………… 2-9
2.3 Sensor location …………………………………………………… 2-18
2.4 Paper handling section ………………………………………… 2-22
2.4.1 Components ………………………………………………… 2-24
2.4.2 Functions …………………………………………………… 2-25
2.4.3 Paper tray …………………………………………………… 2-26
2.4.4 Pick up unit…………………………………………………… 2-27
2.4.5 Registration unit …………………………………………… 2-28
2.4.6 MPF unit……………………………………………………… 2-29
2.5 Image formation ………………………………………………… 2-30
2.5.1 Printing process overview ………………………………… 2-30
2.5.2 Imaging unit ………………………………………………… 2-32
2.5.3 Cartridge transfer unit ……………………………………… 2-36
2.6 Fuser unit ………………………………………………………… 2-39
2.6.1 Fuser unit overview ………………………………………… 2-39
2.6.2 Function of components …………………………………… 2-40
2.6.3 Fuser unit drive ……………………………………………… 2-41
2.6.4 Temperature control ………………………………………… 2-42
2.7 Laser scanning unit ……………………………………………… 2-43
2.7.1 Laser scanning unit overview ……………………………… 2-43
2.7.2 Laser scanning optical path………………………………… 2-44
2.7.3 Laser synchronizing detectors …………………………… 2-45
2.7.4 Automatic line position adjustment………………………… 2-46
chapter 1 Precautions
chapter 2 Product description
Contents

2.7.5 Shutter mechanism ………………………………………… 2-49
2.8 Printer Drive system……………………………………………… 2-50
2.8.1 Drive Motors ………………………………………………… 2-50
2.8.2 Main drive unit (OPC, DEVE, ITB, T1 DIS/ENG)………… 2-52
2.8.3 Pick-up Drive ………………………………………………… 2-53
2.8.4 MP, Regi and Duplex Drive ………………………………… 2-54
2.8.5 Fuser Exit and Duplex Return Drives……………………… 2-55
2.8.6 LSU shutter Drive …………………………………………… 2-56
2.8.7 WTB leveling drive ………………………………………… 2-56
2.8.8 Toner Supply Drive…………………………………………… 2-57
2.9 Scanner system ………………………………………………… 2-58
2.9.1 Scannner system overview ………………………………… 2-58
2.9.2 Scanning System components …………………………… 2-59
2.10 DADF system …………………………………………………… 2-61
2.10.1 DADF systme overview …………………………………… 2-61
2.10.2 Electric parts layout ………………………………………… 2-62
2.10.3 Description of drive system operations…………………… 2-63
2.11 Printer Electronics configuration ……………………………… 2-69
2.11.1 Main controller …………………………………………… 2-71
2.11.2 OPE controller …………………………………………… 2-78
2.11.3 DADF controller…………………………………………… 2-82
2.11.4 Interface part ……………………………………………… 2-83
2.11.5 Connection part…………………………………………… 2-83
2.11.6 SMPS board1 …………………………………………… 2-84
2.11.7 SMPS board2 …………………………………………… 2-86
2.11.8 FDB board ………………………………………………… 2-88
2.11.9 HVPS board ……………………………………………… 2-89
2.11.10 Eraser PBA ……………………………………………… 2-93
2.11.11 Side Joint PBA …………………………………………… 2-93
2.11.12 Fuser PBA ………………………………………………… 2-94
2.11.13 Waste Sensor PBA ……………………………………… 2-94
2.11.14 LED Panel PBA…………………………………………… 2-94
2.11.15 CRUM PBA ……………………………………………… 2-95
2.11.16 Development CRUM Interface PBA …………………… 2-95
Contents

2.11.17 Deve CRUM Joint PBA ………………………………… 2-96
2.11.18 Toner CRUM Joint PBA ………………………………… 2-96
2.11.19 Scan Joint PBA…………………………………………… 2-97
2.11.20 White-LED(WLED) CTL PBA …………………………… 2-98
2.11.21 White-LED(WLED) AL FRONT PBA …………………… 2-98
2.12 Heating cables ………………………………………………… 2-99
3.1 General Disassembly Procedure Precautions ………………… 3-1
3.2 Cover ……………………………………………………………… 3-2
3.2.1 Front cover…………………………………………………… 3-2
3.2.2 Inner cover…………………………………………………… 3-4
3.2.3 Left cover …………………………………………………… 3-8
3.2.4 Rear cover …………………………………………………… 3-9
3.2.5 Right cover…………………………………………………… 3-9
3.3 OPE unit…………………………………………………………… 3-10
3.4 Scan unit ………………………………………………………… 3-15
3.4.1 Scan Assembly ……………………………………………… 3-16
3.4.2 Scan Glass…………………………………………………… 3-19
3.4.3 Lamp Assembly……………………………………………… 3-20
3.4.4 Scanner Board ……………………………………………… 3-22
3.4.5 Scanner Paper Sensor …………………………………… 3-23
3.5 Fuser unit ………………………………………………………… 3-24
3.5.1 NC thermistor and thermostat……………………………… 3-25
3.5.2 Fuser NIP Motor …………………………………………… 3-26
3.5.3 Halogen lamp………………………………………………… 3-29
3.5.4 EEPROM and photo sensor ……………………………… 3-31
3.5.5 Gear ………………………………………………………… 3-32
3.5.6 Heat roller …………………………………………………… 3-33
3.5.7 Fuser belt …………………………………………………… 3-35
3.5.8 Pressure roller and pressure roller bearing ……………… 3-37
3.5.9 Cautions for reassembly …………………………………… 3-39
Contents
chapter 3 Replacement procedure

3.6 Cartridge transfer unit …………………………………………… 3-44
3.7 Main Board ……………………………………………………… 3-48
3.8 Hard Disk Drive (HDD)…………………………………………… 3-50
3.9 SMPS Board ……………………………………………………… 3-51
3.10 FDB (Fuser Drive Board) ……………………………………… 3-52
3.11 HVPS board……………………………………………………… 3-53
3.12 Lift Motor ………………………………………………………… 3-54
3.13 Toner motor and Toner PBA …………………………………… 3-55
3.14 Oznoe Filter Fan………………………………………………… 3-56
3.15 Side Joint PBA ………………………………………………… 3-57
3.16 Main Drive Unit ………………………………………………… 3-58
3.17 Pick-Up Drive Unit ……………………………………………… 3-60
3.18 MP/Regi Drive Unit ……………………………………………… 3-62
3.19 Duplex Fan ……………………………………………………… 3-63
3.20 Fuser Duct Fan ………………………………………………… 3-64
3.21 Exit Drive Unit …………………………………………………… 3-65
3.22 DADF Unit ……………………………………………………… 3-67
3.23 Paper Handling section ………………………………………… 3-77
3.13.1 Pick up unit ………………………………………………… 3-77
3.13.2 Regi Bracket Assy ………………………………………… 3-79
3.13.3 Cover-Side unit …………………………………………… 3-81
3.13.3.1 Duplex unit …………………………………………… 3-82
3.13.3.2 MP tray ……………………………………………… 3-83
3.13.4 Exit unit …………………………………………………… 3-85
3.14 LSU ……………………………………………………………… 3-88
3.15 Cassette heating cable ………………………………………… 3-90
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 ………………………………… 4-3
Contents
chapter 4 Service mode (Diagnostic mode)

4.2.3 Diagnostics Tab …………………………………………… 4-4
4.2.4 Service Functions ………………………………………… 4-5
4.3 Information Tab …………………………………………………… 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
4.3.6 Print reports ………………………………………………… 4-8
4.4 Maintenance Counters Tab ……………………………………… 4-13
4.4.1 Fault counters ……………………………………………… 4-13
4.4.2 Jam counters ……………………………………………… 4-14
4.4.3 Part replacement count …………………………………… 4-16
4.5 Diagnotics Tab …………………………………………………… 4-17
4.5.1 Engine diagnostics ………………………………………… 4-17
4.5.1.1 NVM Read/Write ……………………………………… 4-17
4.5.1.2 Engine Test Routines ………………………………… 4-20
4.5.2 Fax diagnostics …………………………………………… 4-28
4.5.2.1 Fax NVM Read/Write ………………………………… 4-28
4.5.2.2 Fax Test Routines …………………………………… 4-29
4.5.3 Scanner diagnostics ……………………………………… 4-31
4.5.3.1 Shading Test …………………………………………… 4-31
4.5.3.2 Scanner/DADF NVM Read/Write …………………… 4-31
4.5.3.3 Scanner/DADF Test Routines ……………………… 4-32
4.5.4 Adjustment ………………………………………………… 4-33
4.5.4.1 Print Adjustment ……………………………………… 4-33
4.5.4.2 Copy Adjustment ……………………………………… 4-35
4.5.4.3 Scan Area Adjustment ………………………………… 4-36
4.5.4.4 DADF Adjustment …………………………………… 4-38
4.5.4.5 Finisher Adjustment …………………………………… 4-40
4.5.4.6 Buckle Adjustment …………………………………… 4-43
4.5.5 ACS(Auto Color Sensing) ………………………………… 4-45
4.5.6 Color Management ………………………………………… 4-46
4.5.6.1 Auto Color Registration ……………………………… 4-46
Contents

4.5.6.2 Full Color Registration ………………………………… 4-47
4.5.6.2 Auto Color Tone Adjustment ………………………… 4-48
4.5.7 TR Contorl Mode …………………………………………… 4-51
4.6 Sevice functions ………………………………………………… 4-52
4.6.1 Main Memory Clear ……………………………………… 4-52
4.6.2 Hard Disk Maintenance …………………………………… 4-52
4.6.3 Debug Log ………………………………………………… 4-52
4.6.4 Port ………………………………………………………… 4-53
4.6.5 Capture Log ………………………………………………… 4-53
4.6.6 Toner Save ………………………………………………… 4-53
4.6.7 Count Setting of Large Page ……………………………… 4-53
4.6.8 System Recovery ………………………………………… 4-54
4.6.9 User Data Management …………………………………… 4-54
4.6.10 Cool Down Mode ………………………………………… 4-54
5.1 Updating from the Printer Control Panel ……………………… 5-2
5.2 Updating from the Network …………………………………… 5-8
6.1 PM Supplies ……………………………………………………… 6-1
6.2. PM Procedures ………………………………………………… 6-4
6.2.1 Toner cartridge ……………………………………………… 6-4
6.2.2 Imaging unit ………………………………………………… 6-6
6.2.3 Cartridge Transfer Unit …………………………………… 6-10
6.2.4 2nd Transfer roller ………………………………………… 6-14
6.2.5 Fuser Unit …………………………………………………… 6-15
6.2.6 Pick up/ Retard/ Forward roller …………………………… 6-16
6.2.7 Ozone Filter ………………………………………………… 6-16
6.2.8 Dust Filters ………………………………………………… 6-17
6.2.9 DADF Pick up rollerAssy ………………………………… 6-18
Contents
chapter 5 Updating Firmware
chapter 6 Preventive maintenance (PM)

6.2.10 DADF friction pad ………………………………………… 6-18
6.2.11 MP Pick up/ Retard/ Forward roller …………………… 6-19
6.3. Cleaning the PM parts ………………………………………… 6-21
6.3.1 Cleaning the charge scorotron …………………………… 6-21
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 LSU window ………………………………… 6-25
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 ………………………………………… 7-15
7.3 Image quality problems and solutions ………………………… 7-121
7.3.1 Vertical white band / Dark band …………………………… 7-124
7.3.2 Horizontal white band / dark band ………………………… 7-126
7.3.3 Color spot …………………………………………………… 7-127
7.3.4 Foggy background ………………………………………… 7-128
7.3.5 Blurred image ……………………………………………… 7-129
7.3.6 Incorrect color registration ………………………………… 7-130
7.3.7 Uneven pitch and jitter image ……………………………… 7-132
7.3.8 Skewed image ……………………………………………… 7-133
7.3.9 Low image density ………………………………………… 7-134
7.3.10 Blank copy, Black copys ………………………………… 7-141
7.3.11 Uneven density in sub scan direction …………………… 7-143
7.3.12 Uneven density in main scan direction ………………… 7-144
7.3.13 Gradation reproduction failure …………………………… 7-145
7.3.14 Void areas, white spots ………………………………… 7-147
7.3.15 Poor fusing performance, offset ………………………… 7-148
7.3.16 Stain on the paper back side …………………………… 7-149
7.3.17 White Halo ………………………………………………… 7-150
Contents
chapter 7 Troubleshooting

7.4. DADF skew testing ……………………………………………… 7-151
7.5 Other Errors ……………………………………………………… 7-153
8.1 Main 1……………………………………………………………… 8-1
8.2 Main 2……………………………………………………………… 8-2
8.3 Main 3 …………………………………………………………… 8-3
8.4 Main 4 …………………………………………………………… 8-4
8.5 SCAN & DADF …………………………………………………… 8-5
8.6 DADF ……………………………………………………………… 8-6
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
10.1 Tools for troubleshooting ……………………………………… 10-1
10.2 Abbreviations …………………………………………………… 10-4
Contents
chapter 8 System diagram
chapter 9 System Recovery
chapter 10 Reference information

1. Prec
a
1. Warning and cautio
n
In order to prevent accidents and to prevent damage t
o
below carefully before servicing the printer and follow
(1) Only to be serviced by appropriately qualified servi
High voltages and lasers inside this product are da
qualified service technician.
(2) Use only Samsung replacement parts
1.1 Safety Warning
(2)
Use
only
Samsung
replacement
parts
.
There are no user serviceable parts inside the prin
t
additions to the printer as these could cause the pr
fire hazards.
(3) Laser Safety Statement
The Printer is certified in the U.S. to conform to th
e
Subchapter J for Class 1(1) laser products, and el
s
f i t th i t f IEC 825 Cl I l
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orm
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ng
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o
th
e requ
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remen
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s o
f
IEC
825
.
Cl
ass
I
l
as
laser system and printer are designed so there is n
Class I level during normal operation, user mainte
n
Warning >> Never operate or service the printer with
t
assembly. The reflected beam, although invisible, can
When using this product, these basic safety pre-cauti
o
electric shock, and personal injury.
Service Manual 1
-
a
utions
n
for safety
o
the equipment please read the precautions listed
them closely.
ce technician.
ngerous. This printer should only be serviced by a
t
er. Do not make any unauthorized changes or
inter to malfunction and create an electric shock or
e
requirements of DHHS 21 CFR, chapter 1
s
ewhere, it is certified as a Class I laser product con-
dt t id dtbh d Th
er pro
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uc
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s are no
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cons
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ere
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o
b
e
h
azar
d
ous.
Th
e
ever any human access to laser radiation above a
n
ance, or prescribed service condition.
t
he protective cover removed from Laser Scanner
damage your eyes.
o
ns should always be followed to reduce risk of fire,
SAMSUNG ELECTRONICS
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1