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Troubleshooting
Troubleshooting equipment
Table 4-2
summarizes recommended equipment for troubleshooting the Model 2000-SCAN.
Troubleshooting access
In order to gain access to the scanner card circuit board to measure voltages under actual
operating conditions, perform the following steps:
1.
Turn off the Model 2000 power, and disconnect the line cord and all other equipment.
2.
If wires are connected to the scanner card, remove the scanner card from the multimeter.
3.
Remove the Model 2000 cover as follows:
A.
Remove the handle by rotating it to align the arrows on the handle mounting ears.
Pull out and remove the handle.
B.
Remove the screws that secure the handle mounting ears, then remove the ears.
C.
Remove the screws that attach the rear bezel to the case, then remove the bezel.
D.
Remove the bottom screws that grounds the case to the chassis.
WARNING
Be sure to install and tighten the grounding screws after replacing the cover.
E.
Remove the cover by pulling it off towards the rear.
4.
Disconnect any wires connected to the scanner card terminal blocks.
5.
Install the scanner card in the multimeter.
6.
Connect the line cord, and turn on the power to measure voltages (see following
paragraph).
Table 4-2
Recommended troubleshooting equipment
Description
Manufacturer and model
Application
Multimeter
Oscilloscope
Keithley 2000/2001
TEK 2243
DCV checks
View logic waveforms
Service Information
4-13
Summary of Contents for 2000-Scan
Page 12: ......
Page 13: ...1 General Information General Information ...
Page 17: ...2 CardConnections andInstallation CardConnec tionsandInstal lation ...
Page 35: ...3 Operation Operation ...
Page 58: ...3 24 Operation Section 3 Page 24 Tuesday July 8 2003 2 30 PM ...
Page 59: ...4 Service Information Service Information ...
Page 73: ...5 Replaceable Parts Replaceable Parts ...
Page 76: ...5 4 Replaceable Parts ...
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Page 78: ......
Page 79: ...A Specifications Specifica tions ...
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