Honeywell UDA2182 Guida all'installazione
FAQ: UDA2182 Analyzer how to replace the bezel
assembly or the display cable?
Background
The display does not show any text or the display cable has been damaged, how can these faults be
fixed?
Damage has been caused to the display cable when opening and closing the door or the display has
failed due to a component failure.
Answer
Please carefully follow the procedure below and observe all warning or safety messages, if you
have any doubt then do not continue and contact Honeywell for assistance.
Part numbers:
Bezel Assembly p/n 51453518-502
Ribbon Cable p/n 50000556-501
WARNING
While the unit is powered, a potentially lethal shock hazard
exists inside the case. Do not open the case while the unit is
powered.
When working with Printed Wiring Boards, you must use a
grounded wrist strap.
Equipment Needed
Small flat-bladed screwdriver
Small Phillips head screwdriver
L1
L2
N
Accessing the Display Cable
With power off:
•
Loosen the four captive screws on the front of the bezel.
•
Grasp the bezel on the right side. Lift the bezel gently and swing the bezel open to
the left.
Future
Use
Option Board Location
Power
Supply/
Analog
Output/
Relay
Output
Board
Location
Input 1 Board
Location*
* 15 terminal or 10 terminal
Boards can be in either location
Input 2 Board
Location*
L1
L2
N
Power Supply Terminals Board Retainer
Ground Stud
Wiring Access Ports Ground
Screws
(5)
Inside case with door open
Figure 1 Printed Wiring Board Location
HPS Technical Support Page 3
Removing / Installing the Bezel assembly
Step
Action
ATTENTION!
Turn off the power to the analyzer.
More than one switch may be required to remove power.
1
Open the display board connector latch as shown below and remove Display
Cable from display board.
Also, slip the display cable out from under the plastic clip on the inside left of the
case.
2
Remove Phillips head screw in the center of the door hinge and remove the bar.
3
Hinge pins are now exposed. Swing them toward you, and then release the door by
sliding off the pins.
4
Slide the new Bezel Assembly (door) on the pins, replace bar and screw.
5
Insert the other end of the replacement display cable (foils should be facing
toward the display board) into the display board connector and close latch.
6
Close the Bezel and secure four captive screws to a torque value of .20Nm (1.5 Lb-in).
WARNING! Do not apply power until the bezel is closed.
HPS Technical Support Page 4
Removing / Installing Display Cable
Step
Action
ATTENTION!
Turn off the power to the analyzer.
More than one switch may be required to remove power.
1
Open the display board connector latch as shown below and remove Display Cable from
display board.
Also, slip the display cable out from under the plastic clip on the inside left of the case.
2
Label any wires attached to the input, option and power supply boards.
3
Refer to Figure 1 for the location of the terminal board retainer. Loosen the screws that hold
the retainer and slide the retainer left until the retainer tabs disengage from the terminal
boards.
4
Insert a screwdriver into the tab in the boards and gently slide all the boards out completely.
5
Look inside the case and locate the (4) Phillips head screws that attach the CPU board to
the case. Remove all (4) screws. Lift out the CPU board.
6
Holding the board firmly, grasp the display cable and pull it out from the connector.
7
Be careful handling the replacement cable. Do not touch or contaminate the exposed
foils.
8
Orient the cable foil side down toward the CPU board and align the edges with the
connector guides. Push the cable firmly into the connector. Make sure it is straight firmly
into the connector.
9
Re-install the CPU board into the case using the (4) Phillips head screws. Do not over
tighten as this may strip the threads out of the plastic case.
10
Slip the cable back into the plastic clip on the left side of the case.
HPS Technical Support Page 5
11
Insert the other end of the replacement display cable (foils should be facing toward the
display board) into the display board connector and close latch.
12
Replace any boards removed in step 4.
13
Slide the retainer to the left then slide the terminal board back into place. Slide retainer to
engage the tabs and tighten the screws.
14
Attach the wires removed in step 2.
15
Close the Bezel and secure four captive screws to a torque value of .20Nm (1.5 Lb-in).
WARNING! Do not apply power until the bezel is closed.
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