HP Pro 4300 C9H70UT C9H70UT#ABA manual Troubleshooting flowchart 1

Troubleshooting flowchart

The flowchart on these two pages highlights the general processes you can use to isolate and solve printer hardware problems quickly.

Each heading depicts a major troubleshooting step. A "yes" answer to a question allows you to proceed to the next major step.

A "no" answer indicates that additional testing is needed. Proceed to the appropriate section in this chapter, and follow the instructions there. After completing the instructions, proceed to the next major step in this troubleshooting flowchart.

Power on

Is the printer on and does a readable message appear?

NO

Power-on Checks

Follow the power-on

troubleshooting checks. See “Power-on checks” on page 236.

YES

Control-Panel display

Does the message

READY, OFFLINE, or

POWERSAVE appear on

the control-panel display?

NO

Error messages appears

Use the error-message tables in this chapter to understand the message and correct the problem. See “Alphabetical printer messages” on page 258

and “Numerical printer messages” on page 274.

	Event log
YES	Print an event log. If error
	messages appear on the
	control-panel display
	when you try to see or
	print the event log, see
	“Alphabetical printer
	messages” on page 258
	and “Numerical printer
	messages” on page 274.
	If the event log does not
	print, see “Engine test
	page” on page 254.

Evualuate the event log

After evaluating the event

log, go to step 4. See

figure 200 on page 235.

Display panel is functional

Proceed to step 2.

Errors have been corrected

Proceed to step 3.

Figure 199. Troubleshooting flowchart (1 of 2)

234 Troubleshooting Q2431-90912