OsteoSys DEXXUM T User manual

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service Manual Table of all contents
1
Device Service Manual
Service Manual Document Rev. : 6.0
Appendix1. Alignment Document Rev. : 3.0
Appendix2. Calibration Document Rev. : 4.0
Appendix3. Installation Document Rev. : 2.0
Appendix4. FPGA download Document Rev. : 1.0
Appendix5. Disassembling Document Rev. : 1.0

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service Manual Table of all contents
2
Revision History
Date
Revision
Description
DR
CHK
APP
Lot
2009.3.26
01
Initial Release
W.J.Moon
H.S.Han
K.Y.Yoon
2009.10. 28
02
Motor Driver model
running chage
(KR55MC -> MD5-HD14)
W.J.Moon
J.K. MooN
K.Y.Yoon
2009.12.17
03
Firmware/software change
W.J.Moon
J.K. MooN
K.Y.Yoon
2010.03.17
04
Add the way of using laser
point JIG.
Power board revision
information
W.J.Moon
J.K. MooN
J.H.Choi
2010.09.20
05
Add information of service
procedure for PMT detector
W.J.Moon
J.K. MooN
J.H.Choi
2014.12.11
5.01
Add document revision
number
M.J.Park
H.K.Kim
J.J.Kim
2014.12.11
06
Modify HFG Fix Brkt'
Y.H.KIM
S.J.MOON
J.J.Kim
2015.01.05
07
The solution according to
the error code
M.J.PARK
J.J.KIM
J.J.KIM
2015.01.21
07.01
The solution according to
the error code
M.J.PARK
J.J.KIM
J.J.KIM
This document is prepared/distributed by OsteoSys Co., Ltd.
Legal action will be applied to illegal use.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service Manual Table of all contents
3
Service Manual
1. Cautions .............................................................................................................................................4
2. Field Replaceable Unit and Ordering Code.......................................................................11
3. Trouble Shooting Guide ...........................................................................................................15
4. Service Manual .............................................................................................................................46
5. Appendix 1 : DEXXUM T Mechanical alignment manual
6. Appendix 2 : DEXXUM T Calibration manual (Confidential)
7. Appendix 3 : DEXXUM T installation manual
8. Appendix 4 : DEXXUM T firmware download manual
9. Appendix 5 : DEXXUM T Device disassembly manual
10. Appendix 6 : DEXXUM T Cable drawing

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service Manual Table of Safety contents
4
1. Cautions
1. Representations in the Service Manual ...............................................................................5
2. Service engineer training ...........................................................................................................8
3. Cautions .............................................................................................................................................9
4. Service program and service documents .........................................................................10
5. Personal data protection ..........................................................................................................10

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
5
1. Representations in the Service Manual
1) Representation method
User manual and installation manual are described based on the following marking and
representation method.
-Method of describing order, signs and icons
Alphabetical order is used to indicate execution order.
a. Indicates first in order
b. Indicates second in order
c. Indicates third in order
Examples are provided in a box and ‘Example)’ is used to indicate the description is an
example of the case concerned.
Example)
a. Place the patient on the bed of the measuring equipment.
b. Check if the measured part comes within the measuring scope
and put it exactly within the scope.
c. On the window of the user program that says “Will you move to the base location?”,
select Yes or No..
Additional explanations are indicated with ‘-‘, to show brief information.
Signs that indicate material contents or contents that require attention in the manual
: Cautions related to equipment use
: Points to be fully understood with relation to equipment use
: Reference page

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
6
Indication of “CAUTION”
The mark and phrase “CAUTION!“ as below is designed to draw users’ attention
since there can be safety risks during use of the equipment.
Along with the warning phrase, explanation is provided.
Indication of “High voltage“
Label of high voltage generating device of the equipment. Since high voltage
flows within the equipment, users must wear protective outfit, use insulated tools to
perform maintenance or repair activities.
Indication of “WARNING”
The “WARNING“ label as below indicates possibility of safety accidents in case users
are negligent or not careful enough Along with the warning phrase, explanation is
provided.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
7
2) Symbols
: X-ray on
Symbol that Indicates X-ray is currently emitted for examination. The symbol appears
on the equipment controller or on monitor during examination of a testee or daily
tests.
: X-ray off
Symbol that Indicates X-ray is not currently emitted for examination. The symbol
appears on the monitor during stand-by mode or waiting for measurement or
measurement is completed.
: Laser pointer
Symbol that indicates danger of laser pointer.
: Power on
Symbol that indicates that power is on.
: Power off
Symbol that indicates that power is off
: Start
Symbol that indicates X-ray is being prepared to be emitted.
: Communication state
Symbol that indicates communication state of the equipment.
: Caution
Symbol that indicates caution is needed or it is needed to refer to the manual for
safety reason.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
8
2. Service engineer training
The service engineer of this equipment needs training on safety knowledge of the
equipment and safety awareness during the work. Fully understand safety points for
your work, get thoroughly read the service manual and provide the service in the order
as indicated.
You need to pay keen attention to “Caution” symbol for Cautions or warnings.
Service engineers shall complete training on “safety on duty” to be provided by
Osteosys on a regular or irregular basis.
Service engineers shall receive trainings on proper use of the equipment and service.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
9
3. Cautions
Field engineers of DEXXUM T must be cautious of safety matters on duty, wear
safety outfit and start work after fully understanding Cautions.
1) Full understanding of Cautions
-Make sure to thoroughly understand the following Cautions.
1. Work in compliance with the manual.
2. Do not touch with wet hand
3. Wear protective outfit or shielding gears fit to your work
4. Disconnect main power cable from the device whenever disassembling the
device.
5. As DEXXUM T is using high voltage, even when the power is off, some voltage
can be left in the device around the power supply part. Be sure not to cause
short circuit between devices when using conductive tools.
6. Make sure to wear shielding outfit when handling X-ray emitting devices since
DEXXUM T is X-ray generating equipment
7. DEXXUM T is scanning equipment designed to scan the patient by moving
carriage on bed by using monitors. Be cautious about monitors on the move.
8. As DEXXUM T has many sharp parts inside, be careful about injury.
2) Wearing safety or protective gear or outfit
-Field engineers shall wear proper protective outfit or gear depending on their job on
hand.
.
1. Wear nonconductive gloves when handling power supply regions or other power
supply devices. Do not work with wet hands or be careful not to let conductive
accessories touch power supply regions
2. Wear shielding outfit when handling X-ray emitting devices or generating X-rays.
3. Wear gloves and safety shoes when handling mechanisms or internal fixtures.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Safety
10
4. Service program and service documents
Documents regarding our service program and equipment services are protected by copy
right. Only the users who are authorized by Osteosys have the right to use our software
and manual.
Service engineers who are authorized by Osteosys have the right to use our service
program and manual.
5. Personal data protection
Personal information or measurements of the patients are protected under relevant laws
and regulations. Service engineers are not allowed to disclose any personal information
or data during service provision.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual FRU List
11
2. Field Replaceable Unit List and Ordering code
Ordering Code
FRU
Qt’
Description
Remarks,page
FRU009-001
BED-TABLE-MDF
1
MDF
4-7;P110
FRU009-002
BED –MAT-BLUE
1
Urethane Mat
4-7;P110
FRU009-003
BED –MAT-ORANGE
1
Urethane Mat
4-7;P110
FRU009-004
BED –MAT-PURPLE
1
Urethane Mat
4-7;P110
FRU009-005
BED –WING- MAT –BLUE-(L)
1
Urethane Mat
4-7;P110
FRU009-006
BED –WING- MAT –ORANGE-(L)
1
Urethane Mat
4-7;P110
FRU009-007
BED –WING- MAT –PURPLE-(L)
1
Urethane Mat
4-7;P110
FRU009-008
BED –WING- MAT –BLUE-(M)
1
Urethane Mat
4-7;P110
FRU009-009
BED –WING- MAT –ORANGE-(M)
1
Urethane Mat
4-7;P110
FRU009-010
BED –WING- MAT –PURPLE-(M)
1
Urethane Mat
4-7;P110
FRU009-011
BED –WING- MAT –BLUE-(S)
1
Urethane Mat
4-7;P110
FRU009-012
BED –WING- MAT –ORANGE-(S)
1
Urethane Mat
4-7;P110
FRU009-013
BED –WING- MAT –PURPLE-(S)
1
Urethane Mat
4-7;P110
FRU009-014
BED –WING-(L)
1
Cover
4-6;P108
FRU009-015
BED –WING-(M)
1
Cover
4-6;P108
FRU009-016
BED –WING-(S)
1
Cover
4-6;P108
FRU009-018
BED –CURTAIN-ROLLER-TOP
2
machinery
7-17;P153
FRU009-019
BED –CURTAIN-ROLLER-BOTTOM
2
machinery
7-17;P153
FRU009-020
BED –CURTAIN-SHAFT
2
machinery
7-17;P153
FRU009-021
BED –LIMIT-BLOCK-L
1
machinery
7-8;P124
FRU009-022
BED –LIMIT-BLOCK-R
1
machinery
7-8;P124
FRU009-023
BED –MAIN-SWITCH
1
Switch
7-19;P158
FRU009-024
BED –INLET-BOARD
1
Electric board
7-20;P159
FRU009-026
CARRIAGE-ASSY’
1
System
APPENDIX5
FRU009-089
PMT CARRIAGE-ASSY
1
System
APPENDIX5
FRU009-027
CARRIAGE-MAIN-MODULE
1
Main Module
7-1;P125
FRU009-084
CARRIAGE-PMT PMC ASSY
1
Main Module(PMT)
7-1;P125
FRU009-028
CARRIAGE-POWER-MODULE
1
Main Module
7-2;P126
FRU009-029
CARRIAGE-HFG
1
Generator
7-3;P127
FRU009-030
CARRIAGE-Detector
1
Detector module
7-4;P130

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual FRU List
12
Ordering code
FRU
Qt’
Description
Remarks, page
FRU009-086
CARRIAGE-PMT DETECTOR ASSY
1
Detector module
7-4;P130
FRU009-031
CARRIAGE-HFG-FAN
2
Fan
7-21;P174
FRU009-032
CARRIAGE-HFG-SHUTTER
1
Shutter
7-6;P134
FRU009-033
CARRIAGE-MOTOR-DRIVER
1
Motor Driver
7-5;P133
FRU009-034
Bed-INLET-FUSE-125VAC-6A
10
Fuse
7-18;P171
FRU009-035
Bed-INLET-FUSE-250VAC-3.15A
10
Fuse
7-18;P171
FRU009-036
CARRIAGE-CONTROL-PANNEL
1
Operation Panel
7-14;P157
FRU009-037
CARRIAGE-Detector-
LASER-MODULE
1
Laser Pointer
7-16;P162
FRU009-038
CARRIAGE-LIMIT-SWITCH
4
Limit switch
7-7;P135
FRU009-039
IDLE-PULLEY-S5M
(WITHOUT STROKE GUIDE)
1
machinery
7-11;P149
FRU009-040
IDLE-PULLEY-ASSY
1
machinery
7-11;P149
FRU009-041
ROLLER-IDLE-FLAT
1
machinery
7-11;P149
FRU009-042
SHAFT-PULLEY
1
machinery
7-11;P149
FRU009-043
COVER-TOP-EMERGENCY-SW
1
Switch
7-15;P160
FRU009-044
CARRIAGE-COUPLING-KEY
1
machinery
7-10;P144
FRU009-045
STEPPED-MOTOR
1
Motor
7-10;P144
FRU009-046
CABLE-MAIN-OP-PANNEL
1
Cable Harness
1-7;P57
FRU009-047
CABLE-POWER-EMERGENCY-SW
1
Cable Harness
1-7;P57
FRU009-048
CABLE-MAIN-MOTOR-DRIVER
1
Cable Harness
1-7;P57
FRU009-049
CABLE-MAIN-LIMIT-SW
(without LIMIT SWITCH )
1
Cable Harness
1-7;P57
FRU009-050
CABLE-MAIN-POWER
1
Cable Harness
1-7;P56
FRU009-051
CABLE-POWER-MOTORDRIVER
1
Cable Harness
1-7;P56
FRU009-052
CALBE-MAIN-Detector
(without Laser pointer)
1
Cable Harness
1-7;P56
FRU009-090
PMT detector Cable Assy’
1
Cable Harness
1-7;P57
FRU009-053
CABLE-MAIN-HFG
1
Cable Harness
1-7;P57
FRU009-054
CABLE-POWER-HFG
CABLE-CONNECTORBOX-POWER
1
Cable Harness
1-7;P57
FRU009-055
CABLE-MAIN-SHUTTER
1
Cable Harness
1-7;P57
FRU009-056
CABLE-MOTORDRIVER Y-
CONNECTORBOX
1
Cable Harness
1-7;P57

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual FRU List
13
Ordering code
FRU
Qt’
Description
Remarks,page
FRU009-057
CABLE-MOTORDRIVER X-
MOTOR X
1
Cable Harness
1-7;P57
FRU009-058
CABLE-MAINSWITCH-
CONNECTORBOX
1
Cable Harness
1-7;P57
FRU009-059
CABLE-MAIN-CONNECTORBOX
SCSI
1
Cable Harness
1-7;P57
FRU009-060
CABLE-FUSEINLET-
MAINSWITCH
1
Cable Harness
1-7;P57
FRU009-061
COVER-FRONT
1
Cover
4-1;P102
FRU009-062
COVER-CARRIAGE-TOP
1
Cover
4-3;P104
FRU009-063
COVER-CARRIAGE-BOTTOM
1
Cover
4-3;P104
FRU009-064
COVER-SIDE-L
1
Cover
4-5;P107
FRU009-065
COVER-SIDE-R
1
Cover
4-5;P107
FRU009-066
COVER-BACK
1
Cover
4-2;P103
FRU009-067
COVER-CARRIAGE-COLUMN
REAR
1
Cover
4-4;P106
FRU009-068
COVER-CARRIAGE-COLUMN
FRONT
1
Cover
4-4;P106
FRU009-069
BED-CURTAIN-FILM
1
Curtatin Film
7-12;P152
FRU009-070
CARRIAGE-BOTTOMCOVER-FILM
1
Carriage Film
7-13;P156
FRU009-071
CARRIAGE-TIMINGBELT-YAXIS
1
Timing Belt (Y asix)
7-9A;P138
FRU009-072
CARRIAGE-TIMINGBELT-Detector
1
Timing Belt (Det)
7-9B;P139
FRU009-073
CARRIAGE-TIMINGBELT-HFG
1
Timing Belt (Gen)
7-9C;P141
FRU009-074
JIG-TIMINGBELT-TORQUE
WRENCH
1
Torque Wrench +
Tension Jig Set
5-2;P116
FRU009-075
JIG-TIMIGBELT
1
Tension Jig
5-2;P116
FRU009-076
ACC-PC
1
Computer set
-
FRU009-077
ACC-DAILY-PHANTOM
1
Daily Phantom
-
FRU009-078
ACC-PROTECTIONWALL
1
Protection Wall
-
FRU009-079
ACC-PCTABLE
1
PC Table
-
FRU009-080
ACC-PRINTER
1
Printer
-
FRU009-081
ACC-MONITOR
1
Monitor
-
FRU009-082
ACC-FOOTSUPPORT
1
Supporter
(Triangle shape)
-

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual FRU List
14
Ordering code
FRU 명칭
Qt’
Description
Remarks,page
FRU009-083
ACC-FOOTSUPPORT2
1
Supporter
(Square shape)
FRU009-084
FRU009-091
DEXXUM T SOFTWARE
1
User Software
-
FRU009-085
FRU009-092
DEXXUM T SOFTWARE UPGRADE
KIT
1
Software
Upgrade Kit
-
FRU009-086
FRU009-093
DEXXUM T SOFTWARE
DEXXUM T HARDWARE
Without DOWNLOAD CABLE
1
Software
Update Firmware
Upgrade Kit
-
FRU009-087
FRU009-094
DEXXUM T SOFTWARE
DEXXUM T HARDWARE
With DOWNLOAD CABLE
1
Software
Update Firmware
Upgrade Kit
Downloader
APPENDIX 4
FRU009-095
CABLE_CONNECTORBOX-Y
MOTOR
1
Cable Harness
1-7;P57

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Table of Trouble Shooting Guide contents
15
3.Trouble Shooting Guide
0. How to use Trouble Shooting Guide........................................................................ 18
1. Power ..................................................................................................................... 19
1-1. System doesn’t start when Power is ON.
1-2. Fuse breaks off at Power “ON”
2. Operation/Noise...................................................................................................... 21
2-1. Equipment doesn’t go back to initial position
2-2. Problem during movement/scan
2-3. Noise during operation
3. Problems on Parts.................................................................................................. 25
3-1. Equipment doesn’t go back to initial position
3-2. Replacement according to FRU number
4. Connection /Communication................................................................................... 27
5. Functional Problems on Hardware Main Module..................................................... 28
5-1. Laser pointer doesn’t work
5-2. Problem with Move key/Select key/LED on user control panel
5-3. Problem with buzzer
5-4. Problem with shutter
5-5. Problem with Limit switch
5-6. Detecting problems by main board indicator
6. Functional Problems on Hardware Power Module .................................................. 30
6-1. Laser pointer doesn’t work

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Table of Trouble Shooting Guide contents
16
7. Trouble Shooting on Error Codes............................................................................ 31
7-1. A-002 Hard Disk Space Insufficiency
7-2. B-002 Under Temperature
7-3. B-011 Check Detector or Main Board
7-4. B-012,B-013,B-014,B-015,B-016,B-017,B-018 generator working error
7-5. B-0110 X-ray generator’s temperature getting higher then high temp
Limit Range
7-6. B-0111 X-ray generator working time be in excess(continuous 13 min)
7-7. B-023 X-ray generator Reset
7-8. B-031 X-ray generator Mechanical Error
7-9. B-041 Request Command Time out
7-10. B-051 EEPROM mA Read Fail
7-11. C-003 Image File could not be found
7-12. C-004 Image format does not match
7-13. C-005 Can not find the print format
7-14. C-006 Wrong File Header
7-15. C-007/C-008 It is not scan area
7-16. C-011 File not Found
7-17. C-012 Disconnected
7-18. C-013 This program dose not support current Resolution
7-19. D-001 Retype the Password
7-20. D-002 Patient not selected
7-21. D-004 There is a problem in the year of birth
7-22. D-005 There is a problem in the month of birth
7-23. D-006 There is a problem in the day of birth
7-24. D-007 ‘Name’ is required
7-25. D-008 ‘Ethnic’ is required.
7-26. D-008 ‘Height’ is required
7-27. D-010 ‘Weight’ is required
7-28. D-011 ID marking is wrong. Retype the ID Mask
7-29. D-012 'Password Confirmation' is not equal to 'New Password’
7-30. D-013 ‘Password’ is required
7-31. D-014 ‘Retype password’ is required
7-32. D-018 Doctor is not selected
7-33. D-020 Image is not selected

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Table of Trouble Shooting Guide contents
17
7-34. D-021 Scan site is not selected
7-35. D-024 Release ROI button
7-36. D-026 Database server could not be found
7-37. Daily QC is not finished
7-38. D-030 Scan Area Over (Y axis)
7-39. D-031 Work List Mode
7-40. D-040 There may be an object on this position. Please remove object and
retry
8. Daily Inspection Test............................................................................................... 39
8-1. BMD Check Fail
8-2. Repair on Back Ground
8-3. Repair on Low/ High Ratio / Spectrum area
8-4. Repair on Spectrum area
8-5. Repair on Moving Test area
9. Trouble Shooting on Image Measured.................................................................... 44
9-1. Lines or black spots on image
9-2. Image is not visible or reversed after image analysis
9-3. Location of bone image of a patient is not recognizable.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Trouble Shooting Guide
18
0. How to use Trouble Shooting Guide
Find the problems listed in the content for troubleshooting.
Using this troubleshooting guide, you can identify the problems in the content, find the pages
concerned, test and check starting from A. To identify problems described in A, check from A-1, A-2 to
A-3 to address problems; detected problems shall be resolved by replacement methods described in
A-1, A-2 and A-3.
☞indicates the pages concerned that are helpful to identify the problems, test methods or location of
the information in 4. Service Manual.
Trouble Shooting Guide is constantly updated if HQ determines change upon request from the field,
design change, or quality change is necessary.
(Option)
APPENDIX 2 : DEXXUM T Calibration Manual is provided when Master Phantom for Calibration is
purchased through OsteoSys HQ or its agencies, for which it is marked (Option) in this Service
Manual.
(Option) Manual requires confidentiality agreement.

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Trouble Shooting Guide
19
1. Power
1-1. System doesn’t start when Power is ON.
A. Test Main switch/Emergency switch/Inlet/Fuse/Wall power with DVM.
A-1. Main Switch Test ☞1-2. Outer figure of DEXXUM T (Inlet, Switch)
A-2. Emergency Switch Test ☞1-1. Outer figure of DEXXUM T (Inlet, Switch)
A-3. Inlet Test ☞1-2. Outer figure of DEXXUM T (Inlet, Switch)
A-4. Fuse Test ☞1-2. Outer figure of DEXXUM T, 7-18. Replacing fuse
B. Life bed, remove MDF and check Power Module indicator for abnormality. Main board
power is still not ON when Main Power is ON, move to D.
Checking B-1 Indicator ☞2-3. Power Module Test and reading the indicator
C. Forced initialization of AC voltage from AC input to Power module connector on Device
☞6. Initialization and movement control for testing
C-1. FRU009-060 Cable TEST ☞1-7. Cable Harness Drawing
C-2. FRU009-058 Cable TEST ☞1-7. Cable Harness Drawing
C-3 FRU009-054 Cable TEST ☞1-7. Cable Harness Drawing
D. Remove Main module cover and check input/output voltage.
D-1. Main module cover and check input/output power.
☞1-3. Main components of DEXXUM T
2-2. Main module Test method and reading the indicator
D-2. FRU009-050 Cable Test ☞1-7. System Cable Connection Diagram
D-3. If no abnormality found, replace Main module ☞7-1. Replacing and testing Main
module
E. If Power is still not ON when no problem on Main module power, it can be assumed that
Main-controller(IC) is damaged.
Replacing E-1 Main module
☞7-1. Replacing and testing Main module

Service Manual (English)
OsteoSys Co., Ltd.
Model Designation: DEXXUM T DOC. No. : OT09-2F7431-SVM-05
Service manual Trouble Shooting Guide
20
1-2. Fuse breaks off at Power “ON”
A. Lift bed and MDF, Motor driver and Main module connected to Power module, and
every connector including X-ray generator power connector.
A-1 Removing Power module connector ☞2-3. Power Module Test and reading the
indicator
B. Check for short-circuit on Inlet and Rocker Switch
B-1. Checking for short-circuit on Inlet and Main Switch ☞1-2. Outer figure of
DEXXUM T (Inlet, Switch)
7-19. Replacing Main switch
7-20. Replacing Inlet / Inlet board
C. Remove Power module cover and check for short-circuit on each Power source
including Power board and SMPS.
C-1. Checking for short-circuit on Test Point ☞2-3 Power Module Test and reading the
indicator
C-2. Replacing Power module ☞7-2. Replacing Power module
D. Check for short-circuit on AC power input part of X-ray generator Module
D-1. Checking for short-circuit on power input part of X-ray generator
☞2-4. Testing X-ray generator control board and reading the indicator
D-2. Replacing X-ray generator ☞7-3. Replacing X-ray generator
E. Check for short-circuit on X.Y Motor Driver
E-1. Checking for short-circuit on Motor Driver Power
☞2-5. Checking for short-circuit on Motor Driver Power and setting the indicator
and driver
E-2. Replacing the Motor Driver concerned ☞7-5. Replacing Motor Driver
F. Remove Main module cover and check for short-circuit on each Power source
F-1. Checking each power source of Main board
☞2-2. Testing Main module and reading the indicator
F-2. Replacing Main module ☞7-1. Replacing and testing Main module
G. Check for short-circuit on cable from AC input part to Power module
G-1 Checking cable ☞1-7. System Cable Connection Diagram