C
ARE
AN
D
M
A
INTE
NA
NC
E
C
ARE
AND
M
A
IN
TE
NANCE
C
AR
E
AND
MAINTE
NANCE
C
AR
E
AND
MAIN
TENAN
C
E
C
ARE
AN
D
MAIN
TEN
A
NCE
C
ARE
AND
M
A
IN
TE
NANCE
C
ARE
AND
M
A
IN
TE
NANCE
Care and maintenance 51
Adjust the scanner
Adjust the scanner
The scanner is adjusted at the factory. If, however, you drop your machine while moving
it, we recommend you adjust scanner.
1.
Press
Menu
repeatedly until
TOOLS
appears and press
OK
.
2.
Scroll to
Adjust Scanner
by pressing
and press
OK
.
3.
Load a plain WHITE sheet of paper (no writing or graphics) into the document feeder
and press
OK
.
• The machine starts to scan the document to adjust the scanner.
• Printing quality may be unexpectedly worse if you do not use a plain WHITE
paper for the adjustment.
LCD error messages
These are the error message that may display along with solutions for you.
Display
Status/Solution
Adjust scanner
first in TOOLS menu
Adjust the scanner to fix this problem as described in
Adjust
the scanner
on page 51.
Check white paper
document and try
again
You must use plain, white paper when adjusting the scanner.
See
Adjust the scanner
on page 51.
Clean white roller,
glass and try again
For more information, see
Clean the document scanner area
on page 49.
Duplicated with
[Speed No.xx]
The same number has already been registered into another
speed dial location.
Exceeded Job Memory
The machine can hold only 3 Favorites.
Exceeded Job Memory
Cancel scheduled
job and try again
The broadcasting and delayed fax can hold 5 jobs in total.
Cancel a scheduled job and try again.
Ink Low. Install
new ink cartridge
The print cartridge is low or has run out of ink. To install a new
print cartridge, see
Replace the print cartridge
on page 44.
Although this message is displayed, you can make a copy or
print a report. Incoming faxes will be stored in memory. You
must manually print them, see
Reprinting faxes
on page 40.
Install ink
cartridge
Print cartridge is not installed or improperly installed.
Invalid Time
The time you set for fax forwarding is wrong.
CB782-90001_UG_EN.book Page 51 Friday, June 29, 2007 4:13 PM
Summary of Contents for 640 Fax series
Page 1: ...HP 640 Fax series User Guide Part number CB782 90001 Second edition 05 2007 ...
Page 6: ...iv Contents ...
Page 36: ...30 Additional features Answer receive mode ...
Page 42: ...36 Advanced faxing Forward faxes ...
Page 74: ...68 Specifications and regulatory information Hewlett Packard LIMITED WARRANTY STATEMENT ...