Troubleshooting flowchart
If the device is not responding correctly, use the flowchart to determine the problem. If the device does
not pass a step, follow the corresponding troubleshooting suggestions.
Power-on self diagnostic tests
When the power is turned on, the MFP initiates several formatter self tests. During the self tests, the
control-panel LEDs (Ready, Data, and Attention) will illuminate on and off.
When the self test are complete and the MFP is ready, all of the LEDs remain illuminated.
If during the self test the LEDs stop illuminating (in any combination of on and off states, see
Table
6-1 Control-panel LED cycles on page 391) and the control panel is blank there might be a problem
with the formatter. Try the following:
Table 6-1 Control-panel LED cycles
Cycle Ready Data Attention
1 Off Off Off
2 On Off Off
3 Off On Off
4 On On Off
5 Off Off On
6 On Off On
7 Off On On
1. Turn the power off.
2. Remove the formatter, and then reinstall it. Make sure that the formatter is fully seated onto the
connectors. See
Formatter cover and cage on page 199 and Formatter cage does not properly
seat on page 566.
3. If a memory DIMM is installed, remove it.
4. Make sure that the wire harness connectors at the control-panel display and the dc controller are
fully seated.
5. Turn the power on.
6. If the problem persists, replace the formatter. See
Formatter cover and cage on page 199.
NOTE If the formatter successfully completes the power-on self diagnostic tests, it is very
likely that the formatter hardware does not need to be replaced.
Step 1: Does READY appear on the control-panel display?
YES
Go to step 2.
NO
ENWW Troubleshooting flowchart 391
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