Rockwell Automation 2706-F11J_F11JC_F21J_F21JC DL50 INSTALLATION MANUAL - Manual (Page 96)

A–B
8
Chapter
8–1
Troubleshooting and Maintenance
This chapter describes how to identify the most common problems that may
occur when operating DL50 displays. This chapter describes how to use the
diagnostics mode and circuit board LEDs as an aid in troubleshooting.
This chapter also provides instructions on cleaning the display window.
Table 8.A
Troubleshooting
Problem Probable Cause(s) Corrective Action(s)
DL50 does not power-up.
1. Power source not providing power.
2. Power source is not correctly attached to
DL50.
3. Blown fuse.
4. Defective power supply (refer to Using
LED Indicators and Diagnostic Mode).
1. Verify presence of 100-240 VAC, 50-60
Hz.
2. Verify power connections as shown in
Chapter 4.
3. Replace fuse.
4. Replace power supply as described in this
chapter.
DL50 does not display messages properly or
no messages are displayed.
1. Communications lines are not properly
connected.
2. DL50 is not properly configured.
3. DL50 was not restarted after configuration
changes.
4. Incorrect protocol used.
5. Improper message format.
6. Faulty processor board, display board, or
power supply.
7. Incorrect jumper setting.
8. No Ctrl–R command sent.
1. Verify communication line connections as
shown in Chapter 4.
2. Verify the DIP switch settings as described
in Chapter 3.
3. Cycle power to the DL50 or press the
Restart switch.
4. Verify that your protocol matches the DIP
switch setting.
5. Make sure your messages are properly
formatted as described in Chapter 5. Use
sample messages provided in Chapter 6
as a means of testing the display.
6. Check status of circuit board LEDs as de-
scribed in next section of this chapter.
7. Set J-1 on processor board to the position
indicated in the diagram on the inside back
cover of the manual.
8. In duplex mode, send Ctrl-R before each
new data packet.
Display characters are not proper size.
1. Line number is set incorrectly.
2. Improper DIP switch setting for character
height.
1. Verify that correct line number is provided,
refer to Chapter 5.
2. Verify character size DIP switch setting,
refer to Chapter 3.
Chapter Objectives
Troubleshooting Chart