HP Q7840A User Manual - Page 182

Problem solving

Page 182 highlights

Symptom Check Possible causes Possible solutions Copy problems Are copies blank? The originals might have been loaded 1. In the ADF, load original upside-down. documents face-up. 2. On the scanner glass, load original documents face-down. 3. If the problem persists, contact HP Customer Care. See HP Customer Care. Are copies of poor quality The copy settings need to be adjusted from the ADF and the for the original document. scanner glass? See Adjust the copy settings. If the problem persists, contact HP Customer Care. See HP Customer Care. Are copies of poor quality The ADF glass strip might be dirty. only from the ADF? Clean the glass strip that is to the left of the scanner glass. See Clean the device. If the problem persists, contact HP Customer Care. See HP Customer Care. Are copies of poor quality The scanner glass might be dirty only from the scanner glass? Clean the scanner glass. See Clean the device. If the problem persists, contact HP Customer Care. See HP Customer Care. Print-quality problems Is the overall print quality poor? Is the printing too light? Do lines, streaks, or dots appear on the pages? The media does not meet specifications. 1. The print cartridge might be empty or damaged. 2. The maintenance kit items might be ready for replacement. 3. Make sure the media meets specifications for the device. See Select print media. Replace the print cartridge. See Change the print cartridge Install the device maintenance kit. See Perform preventive maintenance. 4. If the problem persists, contact HP Customer Care. See HP Customer Care. General printing problems Can you print documents from a computer? The computer cable might be defective. 1. The printer driver might need to be reinstalled. Try printing a configuration page at the control panel. Touch Network Address and then touch Print. If the page prints, the problem is with the cable or the driver. 2. Reconnect the cables. 3. Reinstall the printer driver. The printer driver is on the CD that came with the device. 4. If the problem persists, contact HP Customer Care. See HP Customer Care. 170 Chapter 11 Problem solving ENWW

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Symptom
Check
Possible causes
Possible solutions
Copy problems
Are copies blank?
The originals might have been loaded
upside-down.
1.
In the ADF, load original
documents face-up.
2.
On the scanner glass, load original
documents face-down.
3.
If the problem persists, contact
HP Customer Care. See
HP Customer Care
.
Are copies of poor quality
from the ADF and the
scanner glass?
The copy settings need to be adjusted
for the original document.
See
Adjust the copy settings
.
If the problem persists, contact
HP Customer Care. See
HP Customer
Care
.
Are copies of poor quality
only from the ADF?
The ADF glass strip might be dirty.
Clean the glass strip that is to the left of
the scanner glass. See
Clean the
device
.
If the problem persists, contact
HP Customer Care. See
HP Customer
Care
.
Are copies of poor quality
only from the scanner
glass?
The scanner glass might be dirty
Clean the scanner glass. See
Clean the
device
.
If the problem persists, contact
HP Customer Care. See
HP Customer
Care
.
Print-quality problems
Is the overall print quality
poor?
Is the printing too light?
Do lines, streaks, or dots
appear on the pages?
The media does not meet specifications.
The print cartridge might be empty or
damaged.
The maintenance kit items might be
ready for replacement.
1.
Make sure the media meets
specifications for the device. See
Select print media
.
2.
Replace the print cartridge. See
Change the print cartridge
3.
Install the device maintenance kit.
See
Perform preventive
maintenance
.
4.
If the problem persists, contact
HP Customer Care. See
HP Customer Care
.
General printing problems
Can you print documents
from a computer?
The computer cable might be defective.
The printer driver might need to be
reinstalled.
1.
Try printing a configuration page at
the control panel. Touch
Network
Address
and then touch
Print.
If the page prints, the problem is
with the cable or the driver.
2.
Reconnect the cables.
3.
Reinstall the printer driver. The
printer driver is on the CD that
came with the device.
4.
If the problem persists, contact
HP Customer Care. See
HP Customer Care
.
170
Chapter 11
Problem solving
ENWW