OEC MINI6600 Manual

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
MINI6600TM
Digital Mobile C-Arm
Periodic Maintenance Procedure
00-879519-01
December 1997
OEC Medical Systems, Inc.
384 Wright Brothers Drive
Salt Lake City, Utah 84116

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
This manual may not be reproduced, in whole or in part,
without the written permission of
OEC Medical Systems, Inc.
This procedure does not contain any steps which can be performed by the system operator.
The steps contained in this procedure should not be attempted by anyone
who is not specifically trained or authorized by OEC to work on the
MINI6600TM system.
The contents of this procedure are accurate at the time of publication. However, changes in design and additional
features may be incorporated in the hardware and software which are not reflected in this version of the proce-
dure. Contact OECTechnical Support for clarification, if discrepancies arise.
The MINI6600 Digital Mobile C-Arm is
manufactured under the following U.S. Patents:
4.768.216;
4.797.907;
4.209.706.
Other Patents Pending.
Revision History
Rev Dash Date Change Description
1-01 Jul 96 InitialPublication
A-01 Aug 96 ManufacturingRelease
Dec. 97 CD-ROM Release

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
General Instructions
Use the following procedures to perform periodic maintenance on the MINI6600 Mobile Imaging System.The
MINI6600 Periodic Maintenance Form must be completed as the procedures in this manual are performed. If the
system does not pass a portion of the procedure, correct the problem before completing the PM Form. Note all
failures and the corrective action taken in the comments section of the PM Form.Additional space is provided at
the end of the PM Form.
The tools and test equipment that are required to perform Periodic Maintenance, are described inAppendixA.
AllTorx screws have recommended torque specifications.These specifications are described inAppendixA.
IMPORTANT:
The PM Procedures do NOT list all the steps necessary to complete the PM.
The service engineer WILL NEED theService Manual (00-878315) to complete the PM.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
SAFETY
Ingress Of WaterAnd Solutions
The system must never be operated or stored in locations where conductive fluids, like water and saline solution,
might spill on the equipment.
Always unplug theAC power cable from the wall outlet before cleaning the equipment. Do not allow water, soap,
or other liquids to drip into the equipment and cause short circuits, electric shock and fire hazards.
Mechanical Operation
TheArticulating arm is manually adjusted.
Trained Service Personnel
Serious injury and property damage can result from incorrectly performed service procedures. Observe all operat-
ing and safety procedures contained within this manual.
WARNING:Procedures contained in this manual should only be performed by service personnel
specifically trained by OEC Medical Systems, Inc. to calibrate the MINI6600 System.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Electrical Shock
WARNING:This system is capable of generating lethal voltages. Observe safe electrical testing proce-
dures when performing periodic maintenance procedures on the system.
X-Radiation Exposure
The X-ray tube assembly produces X-radiation when energized. Never operate this device without X-ray shielding
in place. Use lead shielding and draping to protect personnel.
WARNING:Lead aprons, radiation monitors and appropriate radiation shields must be utilized by person-
nel while performing tests.
Living human anatomy should never be used as a phantom or demonstration aid.
CAUTION: Many of the PCB’s in this system contain components which are sensitive to Electro-Static
Discharge (ESD). Observe ESD safety procedures.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
WARNING: Labels
The following warning labels may be found on the system:
X-RAY SAFETY WARNING:
WARNING: Symbols
The following symbols may be found on the MINI6600:
DANGEROUS VOLTAGE PRESENT
Dangerous voltages are present use safety precautions.
DANGEROUS VOLTAGE PRESENT
Dangerous voltages are present - use safety precautions.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
EARTH GROUND
The protective earth ground should be the last electrical connection broken and the first electrical connection
made during servicing procedures.
POTENTIALEQUALIZATION
GRN/YEL wire is used to indicate protective earth conductors, accessible parts connected to earth parts, and
potentialequalization conductors.
EMITTING X-RAY SOURCE
This symbol indicates the presence or potential of producing ionizing X-radiation.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
NON-A/P
This symbol indicates that equipment is non-anesthetic proof and should not be operated in the presence of flam-
mable vapors, liquids or other substances.
ATTENTION
This symbol cautions you to refer to the service manual for additional information.
!

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Completing the PM Form
1. At the top of theMINI6600 Periodic Maintenance Form, check whether you are performing a Semi-
Annual or anAnnual PM.
2. Completely fill in the customer information block, including theTime Of Day (start time) measured in
military time, System Serial Number and the Field Service Report (FSR) / Request ID Number. Indicate
the system configuration with appropriate check marks.
NOTE:Test equipment used must have current calibration dates. Do not use test equipment with expired
calibration stickers.
3. While performing the Periodic Maintenance procedures, log all test equipment used in theTest Equip-
ment Used block of thePeriodic Maintenance Form.
4. Place a check mark on the PM Form as each test paragraph is completed. Fill in actual measured val-
ues where indicated on the PM Form. If adjustments are made, note the adjustment in the comments
section of the PM Form.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Begin Periodic Maintenance
Remove the PowerAnd Covers
WARNING:Electrical circuits inside the equipment use voltages that are capable of causing serious injury
or death from electrical shock. Use appropriate precautions.
1. If the system has power applied, position the System keyswitch/pushbutton to the OFF position. Verify
that the System’sAC power cord is not plugged into the wall outlet.
2. Remove the System covers. Refer to the System Overview section in the MINI6600 Digital Mobile C-
Arm Service Manual (00-878315) for cover removal procedures.
Elapsed Time Indicator
Read the elapsed time meter on the System and enter the number on the PM Form.
Inspect the Static Drag Wire
1. Verify that the static drag wire underneath the System is touching the floor.
2. Verify the static drag wire is securely attached.
Inspect theArticulatingArm and Brake
Verify that the articulating arm mechanics move freely and smoothly throughout the entire range of
motion.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Inspect the Rotation Brake
1. Release the rotation brake and rotate the MINI-C assembly.
2. Verify smooth rotation.
3. Verify that the brake locks the mechanics in any position within the range of motion.
Inspect the Orbital Brake
1. Release the orbital brake.
2. Move the MINI-C throughout the orbital range. Ensure smooth operation.
3. Verify that the brake locks the mechanics in any position within the range of motion.
Verify the System SteeringAnd Brake Operations
1. Select the LOCK mode by pressing the steering brake pedal completely down. Verify that the casters
and wheels are locked in position and do not move.
2. Select the FREE mode by lifting the steering pedal up halfway. Verify that the casters rotate and the
wheels roll freely.
3. Select the STEER steering mode by lifting the steering pedal completely up. Verify that the casters
rotate into the steering position and lock, and the wheels roll freely.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Inspect/Clean the SystemAir Filter
Inspect and clean the System air filter attached to the rear panel.
Inspect theAC Power Cable
Inspect the SystemAC power cable for damage and wear.
Inspect the Cables, Connectors and PCB’s
1. Inspect all the cables for damage. Look for signs of abrasion to the cable jacket. If abrasions are de-
tected, replace the cable.
2. Inspect all connectors. Ensure that all connectors are seated securely.
3. Ensure all PCB’s are seated securely.
Measure the Ground Continuity
WARNING:Do not perform this continuity test with theAC plug plugged into a power receptacle.
Verify the system power cord is disconnected from theAC receptacle.
From To Spec
System Equipotentiality Stud
(Underneath the bottom right side) AC Power Plug Ground Pin < 0.15 Ω
TABLE 1

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Power Up the System
1. Plug theAC power cord into the wall receptacle.
2. Turn or press the System keyswitch/pushbutton to ON.
3. The system will perform a Power ON self-test during power up.
Cart Progress and Error Codes
1. Failure of the self-test will be indicated by error codes on the System rear panel LED’s.
2. If any code remains and the system fails to complete the Power ON sequence, refer to your Service
Manual(00-878315).
3. Verify that the elapsed time indicator is running.
NOTE:The elapsed time indicator will increment every 6 minutes or 1/10th of an hour. If the indicator is
not running, initiate repairs before continuing Periodic Maintenance.
System Virus Inspection
1. Turn or press the system keyswitch/pushbutton to the OFF position.
2. Access DOS by inserting a DOS disk in driveAand turn or press the keyswitch/pushbutton to the ON
position.
3. When you seeA:\> remove the DOS Disk and insert the Virus Scan Disk.
4. Run the virus scan program.
5. Repair/clean any files found infected. Remove the virus scan disk.
6. Reboot the system.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Measure the Line Voltage Regulation
WARNING:This procedure produces high energy X-rays. Even though the system radiation levels are
lower than other OEC C-arms, wear protective radiation clothing. Because of the radiation
produced, non-service personnel should not be present in the room during any of the following
tests.
1. Measure theAC line voltage at the wall receptacle.
Vn=_____
2. Verify that the white/blue wire is connected to Primary 1 COM and the blue wire is connected to Pri-
mary 2 COM.
3. Ensure that the brown wire and the white/brown wire are properly strapped to match the input line volt-
age, measured in step 1, as indicated by the following table:
Transformer Tap 105V 115V 125V
Input Volt Range 98 to 107 108 to 117 118 to 127
TABLE 2
NOTES:
(A) Additional information regarding the transformer taps can be found in the
Power Distribution sectionof the Service Manual (00-878315).
(B) In the next step, the voltage measured at the wall receptacle may drop during the fluoroscopic
exposure. Read the meter at this time.
(C) Place a lead apron over the I.I. to prevent any undo wear and tear to the image tube.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
4. Measure the line voltage at the wall receptacle while making a fluoroscopic exposure at 98µA @ 75kV
(Max load voltage).
V1=_____
5. Use the following formula to calculate the percentage of line voltage regulation and record the results
below.
Line Regulation = 100 X (Vn - V1)
V1
where: Vn = No load voltage
V1 = Max load voltage
Regulation = _________%
6. If the results above do not fall within the range of 0 to 15 percent, the hospital should be informed that
an in-house wiring problem exists that should be corrected as soon as possible. Note this on the FSR.
(This problem results in a violation of a provision of the Federal Performance Standards 21 CFR
1020.30)

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Inspect/Adjust the System Power Supply Voltages
WARNING:Electrical circuits inside the equipment use voltages that are capable of causing serious injury
or death from electrical shock. Use appropriate precautions.
PS4 (24V)
1. Remove the plexiglass shield preventing access to PS4 (refer to thePower Distribution section,
FIGURE 2 of the service manual (00-878315) for the location of PS4). Record the values measured in
the following steps on thePeriodic Maintenance Form.
2. Measure the +24V on the monitor circuit boards at J6 between the black (GND) and yellow (+24V)
wires.Adjust R11 on PS4 to +24 VDC (±1V) if necessary. Refer to FIGURE 1 for the location of R11.
FIGURE 1 - SYSTEM POWER SUPPLY PS4 +24VDC
WHITE/REDWHITE
BLACK YELLOW
R11 V ADJ
R6
DO NOT
ADJUST

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
PS1 (5V and 12V)
1. Measure the voltages at the following test points on the Video Switching PCB and adjust as required with R53
(+5) and R21 (+12) on PS1. Refer toFIGURE 2 in the Power Distribution section of the service manual (00-
878315) for the location of PS1. Refer to FIGURE2 below for locations of R53 and R21.
2. The Video Switching PCB is located on the inside of the hinged rear panel of the electronics box (Refer to
FIGURE 4 in the Power Distribution section of the service manual (00-878315)).
GND TO ADJUST MEASUREMENT TOLERANCE
TP25 TP24 NotAdjustable - 5.0 VDC ±0.75 VDC
TP25 TP27 Adjust PS1 R53 (OUT1) + 5.0 VDC ±0.75 VDC
TP25 TP28 Adjust PS1 R21 (OUT 2) +12 VDC ±1 VDC
TP25 TP19 NotAdjustable - 12 VDC ±1 VDC
TABLE 3
FIGURE 2 - System Power Supply PS1 (+5V, -5V, +12V, -12V)
F1
250V 4A
FAST BLOW
PS1 P3
OUT 1
V ADJ R53 DO NOT
ADJUST
R43
C28 C30
C32 C29 C42
C31
C18
OUT 2
V ADJ
R21
C5
C51

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Inspect/Adjust the C-Arm Power Supply Voltages (PS2)
WARNING:Electrical circuits inside the equipment use voltages that are capable of causing serious injury
or death from electrical shock. Use appropriate precautions.
1. Refer to thePROCEDURES section of the service manual (00-878315) for accessing the 6600
Controller PCB. Refer to thePower Distribution section in the service manual (00-878315) for
the location of PS2.
2. PS2 output voltages are adjusted using the voltage adjustment pot shown in FIGURE 3. Power
supply voltages are measured on the 6600 Controller PCB at the test points listed below:
- Lead + Lead Supply Tolerance Reading Range
TP2 TP42 +24.0 VDC +10%/-5% +22.8 to +26.4 VDC
TP2 TP37 +12.0 VDC ±3% +11.6 to +12.4 VDC
TP2 TP23 +5.0 VDC ±2% +4.9 to +5.1 VDC (VCC)
TP2 TP39 +5.00 VDC ±2% +4.9 to +5.1 VDC (+5.00 V Ref)
TP2 TP43 -10.00 VDC ±2% -9.8 to -10.2 VDC (-10.00 V Ref)
TP2 TP44 -12.0 VDC ±3% -11.6 to -12.4 VDC
TABLE 4
NOTE:The 6600 Controller PCB contains a circuit breaker (CB1) to protect the +24 volt supply to the
monoblock X-ray source.

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
FIGURE 3 - C-Arm Power Supply PS2 (+5V, +15V, -15V, +24V)
VOLTAGE
ADJUSTMENT
C6 F1
J2
J1
PIN 1
POWER FAIL
DETECT CIRCUIT
PIN 1
T1
L1
1 +5
2 +5
3
4 D-GND
5 D-GND
6
7 A-GND
8 +12
9
10 -12
11 KEY
12 +24
1 GROUND
3 NEUTRAL
5 LINE

MINI6600TM Mobile Digital C-Arm Service Manual - Periodic Maintenance
Inspect the Service Outlet Strip
1. Check for 115 VAC ±5 VAC at the service outlet strip located below the monitors at the rear of the
System.
2. Check for 230 VAC ±10 VAC at the service outlet strip located below the monitors at the rear of the
System.
Perform the System Diagnostic Tests
1. Insert the Service Disk into the disk drive. Same service disk as used for the Series 9600 C-Arm (00-
877444).
2. Press SETUP OPTIONS and access Level 2 diagnostics. Select the Setup Options menu, and then
select Run System Diagnostics.The following tests will appear:
••
••
•Front PanelTest
•System MemoryTests (ATMotherboard Memory)
•Image ProcessorTests (IPPCB Memory)
•Toggle MotionArtifact (Toggles ON/OFF), Non Functional
3. Select the Front
Panel Test and press the following switches and verify that a hex code is displayed
and an audible tone is heard for each switch pressed: Negate, VCR Play, VCR Record,Auto, Help,
Brightness and Contrast, Fluoro, One Shot, Enhanced.Averaging, L-R.
4. Verify that the remaining tests pass successfully. Press the ENTER key to toggle through tests.
5. Remove the Service Disk from the disk drive.
6. Pressing ESC will exit the System Diagnostic tests and reboot the System.