032-0207-EN Rev 0
i-i
1- Opening and Closing Procedures
Master Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Opening the Master Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Local Configuration Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Remote Configuration Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Closing the Master Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Articulated Arm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Opening an End of the Articulated Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Closing an End of the Articulated Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2- Checks
System Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3- Adjustments and Maintenance
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Tubehead - Horizontal Drifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Horizontal Arm - Horizontal Drifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Articulated Arm - Horizontal Drifting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Articulated Arm - Vertical Drifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Outer Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Inner Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Articulated Arm - Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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032-0207-EN Rev 0
i-ii
4- Configuration Settings
Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SW2 - Setting for X-Ray Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SW2 - Setting for Optional 12" (30 cm) Cone . . . . . . . . . . . . . . . . . . . . . . . 3
Jumper Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
JP1 - Setting for 120 V ac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5- Problem Resolution
Converter Board (part no. 124-0292) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Converter Board - LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Converter Board - Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Converter Board - Connectors and Jumpers . . . . . . . . . . . . . . . . . . . . . . 12
Logic Board (part no. 124-0293) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Logic Board - LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Logic Board - Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Logic Board - Connectors and Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6- Replacement Parts
Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Articulated Arm and Tubehead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Horizontal Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Master Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Master Control Touch Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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032-0207-EN Rev 0
1-1
1- Opening and Closing Procedures
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert® DC User Manual.
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Opening the Master Control
032-0207-EN Rev 0
1-2
Master Control
Opening the Master Control
There are 2 configurations for the Master Control:
• Local - Master Control Touch Panel is mounted directly to the Master
Control
• Remote - Master Control Touch Panel is mounted on a wall plate
1. Turn OFF the power switch.
2. Disconnect the external power source:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), unplug the
line cord.
– FOR A HARD-WIRED SYSTEM, disconnect the mains supply
(external power source) and use a meter to verify the mains supply is
disconnected.
3. For Local configurations, continue with Local Configuration
Instructions.
For Remote configurations, continue with Remote Configuration
Instructions on page 1-6.
Local Configuration Instructions
To open the Master Control when the Master Control Touch Panel is
mounted directly, (Local configuration):
1. Remove the Master Control Touch Panel:
(Continued)
Tools Required: No. 2 Phillips Screwdriver
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032-0207-EN Rev 0
Opening the Master Control
1-3
(Continued)
a. Pull out at the top of the Master Control Touch Panel.
Figure 1-1 Removing the Master Control Touch Panel
b. Disconnect the control cable and the exposure switch coil-cord or
wall switch cord.
Figure 1-2 Disconnecting the Cable and Cord
c. Lay the Master Control Touch Panel aside. This will be re-installed
later.
2. Position the horizontal arm so that it is parallel to the wall.
(Continued)
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Opening the Master Control
032-0207-EN Rev 0
1-4
(Continued)
3. Remove the small top cover by pulling up at the corner.
Figure 1-3 Removing the Top Cover
4. Grip the outer cover at the top and at the bottom rear hand-grip cutout
and carefully pull it off.
Figure 1-4 Removing the Outer Cover
5. Pull the control cable and the coil-cord back through the cutout for the
cables while removing the outer cover.
6. Lay the covers aside for later re-installation.
(Continued)
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032-0207-EN Rev 0
Opening the Master Control
1-5
(Continued)
7. Unscrew the Strain Relief to remove the control cable and coil-cord
from the door.
Figure 1-5 Removing the Control Cable and Coil-Cord
8. Remove the two Phillips head screws and open the door carefully.
Figure 1-6 Opening the Door
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Opening the Master Control
032-0207-EN Rev 0
1-6
Remote Configuration Instructions
To open the Master Control in systems with the Master Control Touch Panel
mounted on a wall plate (Remote configuration):
1. Pull out at the top of the blank panel.
Figure 1-7 Removing the Blank Touch Panel
2. Lay the blank panel aside. This will be reinstalled later.
3. Position the Horizontal Arm so that it is parallel to the wall.
4. Remove the small top cover by pulling up at the corner, and lay the
cover aside; this will be reinstalled later.
Figure 1-8 Removing the Top Cover
(Continued)
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032-0207-EN Rev 0
Opening the Master Control
1-7
(Continued)
5. Grip the outer cover at the top and at the bottom rear hand-grip cutout
and carefully pull it off.
Figure 1-9 Removing the Outer Cover
6. Lay the covers aside to be re-installed later.
7. Remove the two Phillips head screws and open the door carefully.
Figure 1-10 Opening the Door
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Closing the Master Control
032-0207-EN Rev 0
1-8
Closing the Master Control
1. Close the door and reinstall the two Phillips screws.
2. Reinstall the outer cover and the top cover.
3. For Local configurations, continue to step 4.
For Remote configurations, skip to step 5.
4. For the Master Control Touch Panel that is mounted directly to the
Master Control:
a. Put the cables back in the Strain Relief.
b. Pull the control cable and the coil-cord back through the cutout for
the cables when reinstalling the outer cover.
c. Connect the control cable and the exposure switch coil-cord to the
Master Control Touch Panel before attaching the panel to the outer
cover.
d. Skip to step 6.
5. Install the Blank Plate in the outer cover.
6. Make sure all parts and screws are back on.
7. Restore power to the equipment:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), plug in the
line cord.
– FOR A HARD-WIRED SYSTEM, reconnect the mains supply
(external power source) and use a meter to verify the mains supply is
connected properly.
8. Turn ON the power switch.
Tools Required: No. 2 Phillips Screwdriver
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032-0207-EN Rev 0
Opening an End of the Articulated Arm
1-9
Articulated Arm
Opening an End of the Articulated Arm
1. Turn OFF the power switch.
2. Disconnect the external power source:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), unplug the
line cord.
– FOR A HARD-WIRED SYSTEM, disconnect the mains supply
(external power source) and use a meter to verify the mains supply is
disconnected.
CAUTION
There are three pins inserted into posts that hold the two sections of
the Trim Cover together. Do not use excessive force when separating
the two sections as the pins can be broken. If it is necessary to use a
small screwdriver to separate the two sections, position the
screwdriver at the location of the pins as shown in Figure 1-11.
Figure 1-11 Locating the Three Pins Inside the Articulated
Arm Trim Covers
(Continued)
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Closing an End of the Articulated Arm
032-0207-EN Rev 0
1-10
(Continued)
3. Separate and remove the plastic Trim Covers from the end of the section
of the Articulated Arm. Set the Trim covers aside.
Figure 1-12 Articulated Arm Trim Covers
Closing an End of the Articulated Arm
1. Place the two sections at the end of the Articulated Arm, one on each
side. Press the two sections together ensuring that the pins of the one
section are aligned correctly inside the posts of the other section.
2. Restore power to the equipment:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), plug in the
line cord.
– FOR A HARD-WIRED SYSTEM, reconnect the mains supply
(external power source) and use a meter to verify the mains supply is
connected properly.
3. Turn ON the power switch
Inner Trim Covers
Outer Trim Covers
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032-0207-EN Rev 0
2-1
2- Checks
To prevent unnecessary problems in the future, perform the following set of
checks as part of the recommended maintenance as indicated in the User
Manual.
WARNING
Failure to perform these checks may result in a system that fails to
comply with U.S. Radiation Performance Standards 21 CFR
Subchapter J.
CAUTION
To avoid any potential hazard to operators or patients, any unusual
operation, problems with mechanical functions, or presence of debris,
should be reported to Gendex immediately.
If problems persist, advise the owner NOT TO USE THE SYSTEM.
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032-0207-EN Rev 0
2-2
System Functions
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert
®
DC User Manual.
If problems are found, refer to the appropriate section in this Service Manual
for:
• Adjustment procedures for the Horizontal Arm, Articulated Arm, and
Tubehead (page 3-1)
• Maintenance procedure for the Articulated Arm (page 3-11)
• Troubleshooting information (page 5-1)
• Electrical block diagrams (page 5-20).
IMPORTANT! Contact GENDEX Technical Support if additional information is required.
____ 1. Tubehead - Check for oil leaks or other evidence that could
indicate internal damage. Replace the Tubehead if necessary.
____ 2. Tubehead Rotation - Ensure that the Tubehead maintains its
position around the horizontal axis while remaining easy to rotate
and position. For horizontal dropping, refer to page 3-2 for the
procedure.
Also check for unwanted pivoting of the Tubehead around the
vertical axis. Problems with vertical pivot are typically caused
when the Horizontal Arm is not properly leveled although the
problem can simply be caused when the cabling inside the
Tubehead Yoke is too tight.
____ 3. Mounting - Be sure that the wall support is adequate and that the
system is properly mounted to the wall.
____ 4. Power Switch - Verify that the switch is working properly and
that the Ready Indicator Lamp is illuminated when the power
switch is in the ON position.
(Continued)
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032-0207-EN Rev 0
2-3
(Continued)
____ 5. Master Controls - With the power switch in the ON position,
verify that a Time Selection value indicates on the Master Control
Touch Panel display.
Also check the function of the selector switches for the
Anatomical Time Selection, Imaging Type Selection and Patient
Selection. Pressing the selection buttons should cause indicator
lamps to indicate the selected item.
____ 6. Quickset Tubehead Control - Verify that the indicator lamps are
consistent with the Master Control selections. Verify that the
selector button works properly.
____ 7. Push-button exposure switch - Verify that the push-button
switch in the face of the operator controls is functioning properly.
____ 8. Coil-cord exposure switch - If the coil-cord switch is used,
inspect the switch housing and coiled cord for damage or wear.
Replace if there is evidence of damage present.
____ 9. Exposure Indicators - Make several exposures and verify that
the Radiation Indicator Lamp illuminates and the audible signal is
heard.
____ 10. Premature Termination - Select an exposure of 2 seconds using
the manual adjustment buttons. Initiate an exposure, but release
the exposure switch after a brief period of time before the timer
terminates the exposure. Verify that exposure terminates
immediately upon release of the exposure switch.
____ 11. X-ray Beam Size - Position the cone of the Tubehead directly
onto a panoramic film or several occlusal films taped together to
form a large rectangle. Process the film and verify that the
resulting image is containable in a 6 cm circle.
____ 12. Check that the arms are evenly balanced and that all movements
are smooth and quiet. Verify that the Horizontal and Articulated
Arms do not drift.
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3-1
3- Adjustments and Maintenance
Procedures include adjustments for the:
• Tubehead (page 3-2)
• Horizontal Arm (page 3-2)
• Articulated Arm (page 3-5)
Procedures include maintenance for the Articulated Arm (page 3-11).
Preliminary Information
The balance of the Articulated Arm is initially set at the factory. Other
friction and drift adjustments are set during the installation process.
Adjustments provided in this document are to accommodate customer
preferences or changes in the leveling of the system due to age.
Note! The mechanical adjustments should not be used to compensate for a system
that is not properly leveled on the wall.
Before making any adjustments, first verify that the unit is properly leveled
on the wall; then make adjustments as necessary.
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert® DC User Manual.
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Tubehead - Horizontal Drifting
032-0207-EN Rev 0
3-2
Adjustments
Tubehead - Horizontal Drifting
The Tubehead will drift from the correct horizontal position if the four hex
locking nuts are not adjusted properly. This can happen when the supplied 8"
(20 cm) cone is replaced with the longer, heavier 12" (30 cm) cone.
Note! The adjustment of the four hex locking nuts does not lock the Tubehead in
place but provides proper friction to allow the Tubehead to be rotated and
then to remain in the position to which it has been rotated.
1. Turn OFF the power switch.
2. Disconnect the external power source:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), unplug the
line cord.
– FOR A HARD-WIRED SYSTEM, disconnect the mains supply
(external power source) and use a meter to verify the mains supply is
disconnected.
3. Unscrew the two screws on the Tubehead Yoke Cover Plate, using a
2.5 mm Allen wrench and remove the cover plate from the underside of
the Tubehead yoke. (It may be necessary to position a thin screwdriver
at the base and gently pry off the cover.)
Figure 3-1 Removing the Tubehead Yoke Cover Plate
(Continued)
Tools Required: 2.5 mm Allen Wrench
4.5 mm Hex Wrench
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032-0207-EN Rev 0
Tubehead - Horizontal Drifting
3-3
(Continued)
4. Tighten the locking nuts:
a. Rotate the Tubehead to its maximum position (until it stops).
b. Locate the first hex locking nut, and tighten it with the 4.5 mm hex
wrench.
Figure 3-2 Two of the Four Hex Locking Nuts
c. Rotate the Tubehead until you see the next hex locking nut. Tighten
the nut.
d. Repeat step c. for the remaining two hex nuts.
Note! Tighten all four hex nuts equally, to apply adequate friction to prevent
drifting.
5. Reposition the cover plate and snap it into place. Screw in the two
screws that secure the cover plate.
6. Restore power to the equipment:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), plug in the
line cord.
– FOR A HARD-WIRED SYSTEM, reconnect the mains supply
(external power source) and use a meter to verify the mains supply is
connected properly.
7. Turn ON the power switch.
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Horizontal Arm - Horizontal Drifting
032-0207-EN Rev 0
3-4
Horizontal Arm - Horizontal Drifting
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
1. Follow the steps outlined in Opening the Master Control, page 1-2 to
page 1-7, to open the Master Control.
2. Locate the Horizontal Pivot Brake (the bar clamped around the
Horizontal Arm pivot post). There are two screws on either side of the
brake.
3. Using a 4 mm Allen wrench, tighten the two screws equally to apply
adequate braking to the pivot post to prevent drifting.
Figure 3-3 Tightening the Pivot Brake Screws
4. Follow the steps outlined in Closing the Master Control on page 1-8 to
close the Master Control.
Tools Required: 4 mm Allen Wrench
Horizontal
Pivot
Brake
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032-0207-EN Rev 0
Articulated Arm - Horizontal Drifting
3-5
Articulated Arm - Horizontal Drifting
1. Turn OFF the power switch.
2. Disconnect the external power source:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), unplug the
line cord.
– FOR A HARD-WIRED SYSTEM, disconnect the mains supply
(external power source), and use a meter to verify the mains supply is
disconnected.
3. Slide off the end cap cover from the end of the Horizontal Arm.
Figure 3-4 Removing the End Cap Cover
(Continued)
Tools Required: 4 mm Allen Wrench
End cap
Horizontal
Arm
Articulated
Arm
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Articulated Arm - Horizontal Drifting
032-0207-EN Rev 0
3-6
(Continued)
4. Locate the Friction screw. Using a 4 mm Allen wrench, tighten or loosen
as necessary to get the proper amount of friction or drag to prevent
horizontal drifting.
Figure 3-5 Adjusting the Friction Screw
5. Install the end cap cover.
6. Restore power to the equipment:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), plug in the
line cord.
– FOR A HARD-WIRED SYSTEM, reconnect the mains supply
(external power source), and use a meter to verify the mains supply is
connected properly.
7. Turn ON the power switch.
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032-0207-EN Rev 0
Articulated Arm - Vertical Drifting
3-7
Articulated Arm - Vertical Drifting
Outer Section
Figure 3-6 shows the location referred to as the outer section of the
Articulated Arm (the section nearest the Tubehead).
Figure 3-6 Locating the Outer Section of the Articulated
Arm
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
(Continued)
Tools Required: 7 ½" (190 mm) long 5/16" (8 mm) Allen Wrench
- or 8” (203 mm) long 8 mm T-handle Allen Wrench
Small Flat Head Screwdriver
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Articulated Arm - Vertical Drifting
032-0207-EN Rev 0
3-8
(Continued)
1. Follow the steps outlined in Opening an End of the Articulated Arm on
page 1-9 to remove the trim cover from the end of the outer section of
the Articulated arm.
2. Drop the outside section of the arm to a position to easily access the
adjustment nut (approximately 30° off of horizontal).
Note! For the following step, a minimum 7 ½" (190 mm) long Allen wrench is
required. A T-handled Allen wrench is recommended. If a standard Allen
wrench is used, additional leverage may be needed to turn the nut.
3. Insert an 8 mm Allen wrench about 8 inches long through the hole at the
end of the arm and into the adjustment nut.
Figure 3-7 Adjusting the Vertical Drifting
4. If the arm section is drifting either up or down, rotate the adjustment nut
in the needed direction until the drifting stops:
– Rotate clockwise to increase the upward force on the arm.
– Rotate counterclockwise to decrease the upward force on the arm.
Note! If you need to turn the screw more than three times, contact Gendex
Technical Support.
Note! You can not unscrew the adjustment nut completely.
5. Continue turning the nut in the same direction counting the turns until
the arm starts to move in the opposite direction. Then turn the
adjustment nut the opposite direction ½ the number of turns counted.
6. Follow the steps outlined in Closing an End of the Articulated Arm on
page 1-10 to install the trim cover and restore power.
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032-0207-EN Rev 0
Articulated Arm - Vertical Drifting
3-9
Inner Section
The inner section of the Articular Arm is the section nearest the fork of the
Tubehead.
Figure 3-8 Locating the Inner Section of the Articulated
Arm
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
1. Follow the steps outlined in Opening an End of the Articulated Arm on
page 1-9 to remove the trim cover from the end of the inner section of
the Articulated arm.
2. Position the inside section of the Articulated Arm at approximately a
45° angle to the Horizontal Arm.
The angle of the arm allows access to the adjusting nut (see Figure 3-9).
(Continued)
Tools Required 7 ½" (190 mm) long 5/16" (8 mm) Allen Wrench
- or 8” (203 mm) long 8 mm T-handle Allen Wrench
Small Flat Head Screwdriver
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Articulated Arm - Vertical Drifting
032-0207-EN Rev 0
3-10
(Continued)
Note! For the following step, a minimum 7 ½" (190 mm) long wrench is required.
A T-handled wrench is recommended. If a standard Allen wrench is used,
additional leverage may be needed to turn the nut.
3. Insert an 5/16" (8 mm) Allen wrench through the hole at the end of the
arm and insert into the adjustment nut.
Figure 3-9 Inserting the Wrench
4. If the arm section is drifting either up or down, rotate the adjustment nut
in the needed direction until the drifting stops:
– Rotate clockwise to increase the upward force on the arm.
– Rotate counterclockwise to decrease the upward force on the arm.
5. Continue turning the nut in the same direction, counting the turns, until
the arm starts to move in the opposite direction. Then turn the
adjustment nut the opposite direction ½ the number of turns counted.
6. Follow the steps outlined in Closing an End of the Articulated Arm on
page 1-10 to install the trim cover and restore power.
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032-0207-EN Rev 0
Articulated Arm - Inspection
3-11
Maintenance
Articulated Arm - Inspection
To ensure smooth functioning of the Gendex expert® DC Articulated Arm,
the following procedure must be performed periodically.
Note! To avoid any potential hazard to operators or patients, any unusual
operation, problems with mechanical functions, or presence of debris should
be reported to Gendex immediately.
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
1. Follow the steps outlined in Opening an End of the Articulated Arm on
page 1-9 to remove all four trim covers from the ends of the Articulated
Arm.
2. Inspect the insides of each cover for debris. Remove and clean as
necessary.
3. At each pantograph link (all four), inspect the pins retaining the
pantograph link as indicated in Figure 3-10.
Figure 3-10 Locating the Pins for Inspection
(Continued)
Tools Required Small flat-head screwdriver
Supplies Required "Tri-Gel" lubricant (Gendex part number 1603-
0001)
(The illustration does not
show the matching pin on
the opposite side of the
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Articulated Arm - Inspection
032-0207-EN Rev 0
3-12
(Continued)
CAUTION
The pins referred to in the following step should never be adjusted in
the field. This information is given to determine if you need to contact
Gendex Technical Support.
4. Ensure that the pins are fully inserted into the casting, and the
pantograph links are seated on the shoulder of the pin. If the pins have
moved outward more than 0.015" (0.38 mm or the thickness of a
business card), contact Gendex Technical Support.
Note! The pins are held in with sealed set screws-NEVER REMOVE THE
SEALANT-this may void the warranty.
5. If the arm is squeaking, lubricate the shoulder of the pins where they
meet the pantograph link with "Tri-Gel" lubricant (Gendex part number
1603-0001).
6. Exercise the arm for several cycles.
7. Check the arm for balance and smooth operation. If drifting is observed,
follow the adjustment procedure that corresponds to the type of drifting.
8. Follow the steps outlined in Closing an End of the Articulated Arm on
page 1-10 to install the trim covers and then restore power.
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032-0207-EN Rev 0
4-1
4- Configuration Settings
This chapter describes the procedures to properly set the SW2 switch and the
AC Input Select Jumper.
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert® DC User Manual.
Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
SW2 - Setting for X-Ray Output
032-0207-EN Rev 0
4-2
Switch Settings
SW2 - Setting for X-Ray Output
Normally the dip switch setting for x-ray output, SW2 position 4, should not
be changed. If for some reason the setting has been changed, the x-ray
output will be disabled. All other functions will appear normal.
Note! It is recommended that this procedure be performed only by a qualified
Gendex service agent.
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
1. Follow the steps outlined in Opening the Master Control, beginning on
page 1-2, to open the Master Control.
2. Locate the series of dip switches labeled SW2 located at the bottom left
of the Logic Board.
3. Set the position 4 switch to the OFF position. All other switches should
remain in the OFF position.
Figure 4-1 Setting the SW2 Dip Switch
4. Follow the steps outlined in Closing the Master Control on page 1-8 to
close the Master Control.
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032-0207-EN Rev 0
SW2 - Setting for Optional 12" (30 cm) Cone
4-3
SW2 - Setting for Optional 12" (30 cm) Cone
The default settings for anatomical exposure times are set at the factory for
an 8" (20 cm) focal length cone. The 12" (30 cm) cone is recommended
when using the paralleling film positioning technique. Using the longer cone
requires the use of longer exposure times. These exposure times can be
programmed into the system by changing the setting on Switch SW2.
Note! It is recommended that this procedure be performed only by a qualified
Gendex service agent.
1. Turn the system on and note the initial displayed exposure time.
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
2. Follow the steps outlined in Opening the Master Control, starting on
page 1-2, to open the Master Control.
3. Locate the series of dip switches labeled SW2 located at the bottom left
of the Logic Board.
4. Set the position 3 switch to ON position.
Figure 4-2 Setting the SW2 with Optional Cone Dip
Switch
5. Follow the steps outlined in Closing the Master Control on page 1-8 to
close the Master Control.
6. The initially displayed exposure time should now be two times the time
displayed in step 1.
ON
1 2 3 4
Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
JP1 - Setting for 120 V ac
032-0207-EN Rev 0
4-4
Jumper Settings
JP1 - Setting for 120 V ac
Note! The unit is shipped with the jumper configured for 220 V ac. Systems using
120 V ac with the line cord option requires moving the “AC Input Select”
jumper from the 220 V setting to the 120 V setting, and cutting the JP1
jumper to enable the neutral line fuse.
WARNING
Ensure that you follow the procedure referenced in the following step.
This equipment must always be electrically disconnected from the
mains electrical supply (external power source) before beginning any
procedure.
1. Follow the steps outlined in Opening the Master Control, starting on
page 1-2 to open the Master Control.
2. Locate the AC Input Select jumper.
3. Unplug the jumper from the 230 V ac and plug it into the 120 V ac
setting
Figure 4-3 Locating the AC Input Select Jumper
(Continued)
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032-0207-EN Rev 0
JP1 - Setting for 120 V ac
4-5
(Continued)
4. To enable the neutral line fuse, cut jumper JP1 on the Converter Board
(124-0292G1), as shown in Figure 4-4.
5. Follow the steps outlined in Closing the Master Control on page 1-8 to
close the Master Control
Figure 4-4 Cutting Jumper JP1
Cut
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JP1 - Setting for 120 V ac
032-0207-EN Rev 0
4-6
This page intentionally left blank
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032-0207-EN Rev 0
5-1
5- Problem Resolution
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert® DC User Manual.
Follow these steps before contacting Gendex for additional support.
1. Verify all electrical connections, including the plug connections between
the Articulated Arm and the Horizontal Arm, are good.
Note! Poor connections can occur when dressing the cables up into the Horizontal
Arm.
2. Verify the assembly of the equipment is correct.
3. Review the information in this chapter:
• Common symptoms and possible remedies. See page 5-1.
• For the Converter Board:
– Location and description for LEDs. See page 5-8.
– Location and description for test points. See page 5-10.
– Descriptions of connectors and jumpers. See page 5-12.
• For the Logic Board:
– Location and description for LEDs. See page 5-14.
– Location and description for test points. See page 5-16.
– Descriptions of connectors and jumpers. See page 5-18.
• Electrical block diagram. See page 5-20.
(Continued)
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032-0207-EN Rev 0
5-2
(Continued)
Table 5-1 Common Symptoms and
Possible Remedies
Symptom Additional Symptoms Possible Cause Remedy
No x-ray output All other functions appear
normal.
SW2 -4 set incorrectly Set SW2-4 from the
ON position to the OFF
position
No time display Mains voltage missing;
power switch OFF or
pluggable terminal strip
not connected
If wiring difficulty is not
easily discerned, have
a qualified electrician
check the power line
F5-F6 fuse blown Contact GENDEX
Technical Support for
further assistance
F1 fuse blown Contact GENDEX
Technical Support for
further assistance
Display flashes "Err0"
and the Ready light is
OFF
Premature release of
the exposure switch
Pressing any key but
the exposure switch on
the Master Control
Touch Panel will clear
the display. Be sure to
press and hold the
exposure button until
the exposure is
finished
Operation may be normal
most of the time, with fault
appearing intermittently
Faulty exposure switch
or wiring
Verify and correct
wiring as necessary, or
replace the exposure
switch
(Table continued on the next page)
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032-0207-EN Rev 0
5-3
Display flashes "Err1"
and the Ready light is
OFF
Ready light is OFF, other
display functions appear
normal
Mains voltage
configuration jumper
improperly positioned
Re-configure the
jumper per the
instructions on
page 4-
5
Mains voltage out of
range 108 V - 132 V or
198 V - 253 V
Wait until the line
voltage returns to
normal (indicated by
the lamp being steady)
or have a qualified
electrician check the
power line
Display flashes
"Err2"and the Ready
light is OFF
Ready light is OFF;
exposure terminates
normally, but the output
may be below normal
Mains voltage drops
below minimum
required during
exposure, or source
resistance may be too
high
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the display. If
the problem persists,
have a qualified
electrician check the
power line
No exposure with the
remote exposure
switch
Wrong remote cable
selected from the D800
HK kit
Verify and correct the
wiring as necessary.
Faulty handswitch or
wiring
Mis-wired 110-0160G1
remote cable adapter
kit --customer-supplied
wiring problems
Cooling light is ON Normal operation by
design -- protects and
extends the life of the
tubehead if too many
exposures are made in
too short a period of time
X-ray unit is in the
cooling mode
Wait until the lamp
goes out, indicating
that the tube has
properly cooled down.
(Table continued on the next page)
Table 5-1 Common Symptoms and
Possible Remedies (Continued)
Symptom Additional Symptoms Possible Cause Remedy
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032-0207-EN Rev 0
5-4
Display flashes
"Err3"and the Ready
light is OFF
Operation may appear
normal for several
minutes, or until an
exposure is attempted
P6 feedback plug open
circuit
Verify and correct the
wire termination to the
plug as necessary.
Horizontal Arm J20
misconnected
Ensure that the arm
connections are
securely made, and
that the connectors are
neatly dressed into the
Horizontal Arm, with no
undue stress being
exerted on the wiring.
Display flashes "Err4"
and the Ready light is
OFF
P5 filament drive plug
offset by 1 pin
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing.
Verify and correct plug
connections as
necessary.
P6 filament feedback
plug offset by 1 pin.
Horizontal Arm J16
misconnected
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing.
Ensure that the arm
connections are
securely made, and
that connectors are
neatly dressed into the
Horizontal Arm, with no
undue stress being
exerted on the wiring.
(Table continued on the next page)
Table 5-1 Common Symptoms and
Possible Remedies (Continued)
Symptom Additional Symptoms Possible Cause Remedy
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032-0207-EN Rev 0
5-5
Display flashes "Err4"
and the Ready light is
OFF (Continued)
Floating main earth
ground
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing. If
the wiring difficulty is
not easily discerned,
have a qualified
electrician check the
power line.
Intermittent operation Intermittent
interconnecting wire in
the arm
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing.
Bad connector terminal
crimp, loose connector
terminal, or a broken
cable wire; contact
GENDEX Technical
Support for further
assistance.
Symptom may be
intermittent
Preheat pot
misadjusted
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing.
Follow the filament
preheat reset
procedure provided
with the replacement
tubhead.
(Table continued on the next page)
Table 5-1 Common Symptoms and
Possible Remedies (Continued)
Symptom Additional Symptoms Possible Cause Remedy
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032-0207-EN Rev 0
5-6
Display flashes "Err4"
and the Ready light is
OFF (Continued)
Symptom may appear
only on the first few
exposures of the day
The Tubehead is
arcing internally
Pressing any key
except the exposure
switch on the Master
Control Touch Panel
will clear the flashing.
Contact GENDEX
Technical Support for
further assistance.
Display on the
Quickset Tubehead
Control is not lit
Time selected does not
conform to a default
patient setting
Normal operation -display will come back
on when the time up or
down arrows are
pushed to select a time
that corresponds to a
default patient setting.
P9 Quickset Tubehead
Control plug is offset
Verify and correct the
plug connections as
necessary.
Display on the
Quickset Tubehead
Control is not correct
Time display reads "0001"
-- no decimal point
P9 Quickset Tubehead
Control plug is
reversed
Verify and correct the
plug connections as
necessary.
(Table continued on the next page)
Table 5-1 Common Symptoms and
Possible Remedies (Continued)
Symptom Additional Symptoms Possible Cause Remedy
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032-0207-EN Rev 0
5-7
Display on the
Quickset Tubehead
Control is not lit
correctly
Individual lights may or
may not be working
properly
Horizontal Arm J17 is
misconnected
Ensure that the arm
connections are
securely made, and
that the connectors are
neatly dressed into the
Horizontal Arm, with no
undue stress being
exerted on the wiring.
Horizontal Arm J21 is
misconnected
Ensure that the arm
connections are
securely made, and
that the connectors are
neatly dressed into the
Horizontal Arm, with no
undue stress being
exerted on the wiring.
Table 5-1 Common Symptoms and
Possible Remedies (Continued)
Symptom Additional Symptoms Possible Cause Remedy
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Converter Board - LEDs
032-0207-EN Rev 0
5-8
Converter Board (part no. 124-0292)
Converter Board - LEDs
Figure 5-1 Location of the Converter Board LEDs
(Continued)
D107
D88
D50
D88
D51, D52, D53
D57
D54
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032-0207-EN Rev 0
Converter Board - LEDs
5-9
(Continued)
Table 5-2 Converter Board LEDs Description
LED
Number
Color Normal State Explanation
D50 Green On P15 V isolated Output voltage is present
D51 Green On -15 V output voltage is present
D52 Green On 15 V output voltage is present
D53 Green On 5 V output voltage is present
D54 Green On P15 output voltage is present
D57 Green On 325 V dc bus voltage is present
D88 Green On Filament output voltage is present
Note!: This LED is only fully illuminated during
exposure
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Converter Board - Test Points
032-0207-EN Rev 0
5-10
Converter Board - Test Points
Figure 5-2 Location of Converter Board Test Points
(Continued)
D107
D88
TP21
TP22
TP25
TP27 TP23, TP24
TP35
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032-0207-EN Rev 0
Converter Board - Test Points
5-11
(Continued)
Table 5-3 Convert Board Test Points Description
Test
Point
Return Description Type Nom. Value Notes
TP21 TP26 P15VISO Output Analog 14 to16 V
TP22 TP35 -15 V Output Analog -14 to -16 V
TP23 TP35 15 V Output Analog 14.5 to 15.5 V
TP24 TP35 5 V Output Analog 4.75 to 5.25 V
TP25 TP36 P15 V Output Analog 14 to 16 V
TP26 N/A P0VISO Return Analog
TP27 TP35 Filament Output Analog 0.75 to 1.25 V During standby
TP35 N/A Analog Ground Analog
TP36 N/A P0V Return Analog
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Converter Board - Connectors and Jumpers
032-0207-EN Rev 0
5-12
Converter Board - Connectors and Jumpers
Figure 5-3 Location of Converter Board Connectors and
Jumpers
(Continued)
D107
D88
D50
J4
J6
J3
JP1
J5
J7
P1 Plugs into J1
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032-0207-EN Rev 0
Converter Board - Connectors and Jumpers
5-13
(Continued)
Table 5-4 Converter Board (part no. 124-0292) Connectors
Connector Description
J1 Line Voltage Configuration (P1 plugs into J1 for 120 or 230
V ac)
J3 HVDC Transformer Drive Output
J4 AC Input 120/230 V ac
J5 Filament Drive Output
J6 HV Feedback Input
J7 Control Board Interconnect
J8
Power Switch (not shown on
page 5-12)
Table 5-5 Converter Board (part no. 124-0292) Jumpers
Jumper Description
JP1 Neutral Fuse Jumper (must be present for hard-wired
installations of 220 V)
P1 Line Voltage Configuration Jumper (Plugs into J1 for 120 or
230 V ac)
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Logic Board - LEDs
032-0207-EN Rev 0
5-14
Logic Board (part no. 124-0293)
Logic Board - LEDs
Figure 5-4 Location of Logic Board LEDs
(Continued)
D33
D23
D110
D32
D34
D24
D7
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032-0207-EN Rev 0
Logic Board - LEDs
5-15
(Continued)
Table 5-6 Logic Board LEDs Description
Lamp Number Color Normal State Error State Explanation
D7 Red Off On A fault has occurred
D23 Red Off On A latched fault has occurred
D24 Red Off On A momentary fault exists
D32 Red Off On Mains overvoltage fault
D33 Red Off On Overcurrent fault
D34 Red Off On Mains undervoltage fault
D110 Green Off On On mA feedback is over 8V
Note: This is for factory use
only
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Logic Board - Test Points
032-0207-EN Rev 0
5-16
Logic Board - Test Points
Figure 5-5 Location of Logic Board Test Points
(Continued)
TP43
TP30
TP9
TP28
TP8
TP34
TP29
TP31
TP10
TP12
TP17
TP39
T
P33
TP32
TP14 TP18TP16
TP37
TP42
TP41
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032-0207-EN Rev 0
Logic Board - Test Points
5-17
(Continued)
Table 5-7 Logic Board Test Points Description
Test
Point
Return Description Type Nom. Range
Values
Notes
TP8 TP37, 41 or 42 5V Reference Analog 4.75 to 5.25 V
TP9 TP37, 41 or 42 2.5V Reference Analog 2.4 to 2.6 V
TP10 TP37, 41 or 42 Exposure Switch Digital 0 or 5 V 0 V during exposure
switch closure
TP12 TP37, 41 or 42 X-ray On Digital 0 or 5 V 5 V during exposure
TP14 TP37, 41 or 42 10V Reference Analog 9.5 to 10.5 V
TP16 TP37, 41 or 42 15V Output Analog 14.5 to 15.5 V Power supply
TP17 TP37, 41 or 42 5V Output Analog 4.75 to 5.25 V Power supply
TP18 TP37, 41 or 42 -15V Output Analog -14 to -16 V
TP28 TP37, 41 or 42 Filament I sense Analog 1.9 to 2.3 V During standby;
2 V/ 1A
TP29 TP37, 41 or 42 Preheat I Command Analog -1.9 to -2.3 V During standby
TP30 TP37, 41 or 42 mA Setpoint Analog 6.7 to 7.3 V
TP31 TP37, 41 or 42 mA Feedback Analog 0 V During exposure;
1 V/1 mA
Note: There is no
voltage at this test
point unless an
exposure is being
made
TP32 TP37, 41 or 42 HV I Sense Analog 0V During standby;
1 V/2 A
TP33 TP37, 41 or 42 kV Feedback Analog 0V During exposure;
1 V/20 kV
Note: There is no
voltage at this test
point unless an
exposure is being
made
TP34 TP37, 41 or 42 kV Setpoint Analog 3.1 to 3.4 V
TP37 NA Analog Ground Analog NA
TP39 TP40 5V Digital Analog 4.75 to 5.25 V Power Supply
TP41 NA Analog Ground Analog NA
TP42 NA Analog Ground Analog NA
TP43 TP37, 41 or 42 X-ray Indicate Digital 0 or 5 V 5 V during exposure
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Logic Board - Connectors and Jumpers
032-0207-EN Rev 0
5-18
Logic Board - Connectors and Jumpers
Figure 5-6 Location of Logic Board Connectors and
Jumpers
(Continued)
JP23
JP22
JP20
JP21
J9
J10
J
8
JP21
JP20
J
P23
J
P22
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032-0207-EN Rev 0
Logic Board - Connectors and Jumpers
5-19
(Continued)
Table 5-8 Logic Board (part no. 124-0293) Connectors
Designator Description
J8 Converter Board Interconnect
J9 Tubehead Interface PCB
J10 Interface Assembly (Master Control Touch Panel serial bus)
Table 5-9 Logic Board (part no. 124-0293) Jumpers
Designator Description
JP20 Negative Preheat Offset (must be open for normal
operation)
JP21 mA Feedback Loop (must be present for normal operation)
JP22 Positive Preheat Offset (must be open for normal operation)
JP23 Jumper Holder
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Logic Board - Connectors and Jumpers
032-0207-EN Rev 0
5-20
Electrical Block Diagram
Figure 5-7 Electrical Block Diagram
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032-0207-EN Rev 0
6-1
6- Replacement Parts
WARNING
Before starting any procedure, review the safety information provided
in the Gendex expert® DC User Manual.
Figure 6-1 Gendex expert® DC Assemblies
Articulated Arm
and Tubehead
Horizontal Arm
Master Control
Master Control
Touch Panel
Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
Articulated Arm and Tubehead
032-0207-EN Rev 0
6-2
Assemblies
Articulated Arm and Tubehead
Figure 6-2 Articulated Arm and Tubehead Diagram
Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
032-0207-EN Rev 0
Articulated Arm and Tubehead
6-3
Table 6-1 Articulated Arm and Tubehead Part Description
Item Part No. Description
1 112-1194G1 Assy, Articulated Arm Converter Side
2 112-1197G1 Assy, Articulated Arm, Tube Side
3 112-1198G1 Assy, Keypad Yoke, Expert
4
110-0209G1 Assy, Tube Head, Final, Expert (includes
top and bottom cover)
5 303-0135P1 Cover, Tube Head, Bottom, Expert
6 303-0134P1 Cover, Tube Head, Top, Expert
7 D720C Cone Assy, 8" (20 cm) Focal Length
8 404-0006P11 Cone O-Ring
9 300-0030P4 Cover, Yoke, Silk Screened
10 05-00-040010-01 Screw, M4x.7x10 mmLG.
11 303-0127P1 Cap, End, Arm, Male x 4
12 303-0128P1 Cap, End, Arm, Female x 4
13 112-0941G1 Yoke Assy
14 241-0025P1 Plate, Yoke
NS D730C Cone Assy, 12" (30 cm) Focal Length
NS D720RC Rectangular Cone, 8" (20 cm) Focal Length
NS D730RC Rectangular Cone, 12" (30 cm) Focal Length
18 110-0204G1 Assy, Scissors Arm and Tubehead
19 112-1194G1 Assy, Scissors Arm without Tubehead
20 203-0393 Bracket, lower
21 210-0321 Bracket, upper
22 214-0160 Friction plate
23 46208758P9 Cable ties
24 642-0152 Nut, Yoke Keyboard Base
NS = Not Shown
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Horizontal Arm
032-0207-EN Rev 0
6-4
Horizontal Arm
Figure 6-3 Horizontal Arm Diagram
Table 6-2 Horizontal Arm Description
Item Part No. Description
1 112-1193G1
Assy, Horizontal Arm, Expert, 75" (191cm)
reach
112-1193G2
Assy, Horizontal Arm, Expert, 65" (165cm)
reach
112-1193G3
Assy, Horizontal Arm, Expert, 55" (140cm)
reach
2
09-06-080012-05
Nylon Tipped Set Screw
3
303-0125P1
Joint Arm Cover, Articulated Arm Side
4
303-0124P1
Joint Arm Cover, Converter Side
5 303-0126P1 Cap, End, Horizontal Arm
6 303-0106P2 Cover Wire Access
7 08-10-040008-01 Screw, M4 x 8, PPHDMS
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032-0207-EN Rev 0
Master Control
6-5
Master Control
Figure 6-4 Master Control Diagram
Table 6-3 Master Control Parts Description
Item Part No. Description
1
112-0991G1
Assy, Converter with Bearings
2
124-0292G1
Assy, PCB, Converter
3
46-170021P53
Fuse, 10A
4
126-0377G1
Assy, Cable, CPU to Power
5 124-0293G1 Assy, PCB, Control & CPU
(Table continued on the next page)
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Master Control
032-0207-EN Rev 0
6-6
6 126-0449G1 Assy, Power Switch & Cable, 20A, 250VAC
7 303-0132P1 Cover, Top, Main, Expert
8 112-1206G1 Assy, Cover, Outer, Main, Expert
9 303-0133P2 Cover, Remote Filler, Expert
10 112-1191G1 Assy, USB Connector, Wall Mount
11 112-1205G1 Assy, Door, Wall Mount
12 427-0027P4 Push Retainer
13 230-0225P2 Hinge Pin, Door, Wall Mount
Table 6-3 Master Control Parts Description (Continued)
Item Part No. Description
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032-0207-EN Rev 0
Master Control Touch Panel
6-7
Master Control Touch Panel
Figure 6-5 Master Control Touch Panel Diagram
Table 6-4 Master Control Touch Panel
Item Part No. Description
1
632-0097P1
Keypad, Remote, Expert
2
303-0129P2
Cover, Remote, Front, Expert
3
124-0255G1
Assy, Interface P.C.B.
4
303-0130P1
Cover, Remote, Rear, Expert
5 422-0098P2 Screw, Phil Pan HD, HI-LO, #6x3/8 x4
6 114-0458G1 Weldment, Plate, Remote Mounting
NS 427-0196P4 Screw, 8x2-1/2, Drywall x 3 or x 6
NS 112-1167G2 Assy, Remote Switch Mounting Screws
Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
Master Control Touch Panel
032-0207-EN Rev 0
6-8
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Printed on: 20 Apr 2012, 11:34:10 am; Printed by: UWE.ZELLER
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