Hp leserjet printer error.

Service-mode functions NVRAM initialization
An NVRAM initialization will return the following device settings to the factory-set defaults:
?
All menu settings, including the fax header and company name
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Fax numbers and names that are associated with one-touch keys and speed-dial codes
Additionally, all faxes stored in memory are cleared.
Perform an NVRAM initialization
1.
Turn off the product.
2.
Simultaneously press and hold the
the product.
3.
Wait until the message Permanent storage init. appears, and then release the
arrow buttons.
When the NVRAM initialization process has been completed, the device control panel shows the
Ready message.
Super NVRAM initialization
A Super NVRAM initialization will return all of the device settings to the factory-set defaults (generic
product mode).
NOTE:
When the product is turned on, you will be prompted to select the language and country/region
setting before the product will initialize.
1.
Turn off the product.
2.
Simultaneously press and hold the
the product.
3.
Wait until the message Permanent storage init. appears, and then release the
arrow buttons.
Service menu
NOTE:
An asterisk (*) symbol next to a service submenu option indicates that this is the current setting
for that option.
For more information about using the service menu, see
Access the service menu
1.
Press the
2.
Use the arrow buttons to select Main Menu Service, and then press OK.
3.
Use the arrow buttons to select the desired secondary-service option, and then press the
button.
4.
Use the arrow buttons to select the desired submenu option, and then press
ENWW
Setup
button.
Cancel
button and the right arrow button
Cancel
button and the left arrow button
Service menu on page
(>
), and then turn on
Cancel
and right
(<
), and then turn on
Cancel
and left
241.
OK
OK

directly from service manual