NEC Projector Np4001 User Manual

5. Using On-Screen Display 
99 
Version 
The Version tab displays all the version and pr oduct details of the projector and associ-
ated software. 
NP4000 Version Screen: 
 
 
NP4001 Version Screen: 
  

5. Using On-Screen Display 
100
The following table lists all items with a description. 
ITEM DESCRIPTION 
Product  Displays Product ID. 
Serial Number  Displays projector Serial Number. 
Firmware Displays Firmware version and Color Wheel currently installed (4-seg 
or 6-seg). 
Data 
Displays Data version.  

5. Using On-Screen Display 
101 
v Reset Menu Descriptions and Functions 
Occasionally, circumstances may require that  factory defaults are reset, for demonstration 
purposes for example, or when components are replaced. 
The Reset menu contains options for returning  settings to the factory default and is accessed 
via the Main menu. 
 
The following table lists all items with a description. 
ITEM DESCRIPTION 
Current Signal  Reset the adjustments for current signal to factory preset levels. All...

 
102 
6. Maintenance 
n Cleaning the projector 
Cleaning the Cabinet
 
Refer to the following guide to clean the projector cabinet. 
1.  Wipe off dust with a clean dampened cloth. 
2.  Moisten the cloth with warm water and mild detergent and wipe the cabinet. 
3.  Rinse all detergent from the cl oth and wipe the projector again. 
CAUTION 
  To prevent discoloration or fading of
 the case, do not use abrasive alco-
hol-based cleaners. 
 
Cleaning the Lens 
Refer to the following guide to clean the...

6. Maintenance 
103 
Cleaning the Filters 
The projector uses three filters to keep the  fans free of dust and other particles, and 
should be cleaned every 500 hours of operati on. In dustier environments, it is recom-
mended to clean the filters more frequently. If t he filter is dirty or clogged, your projector 
may overheat. When the message below is displayed the filters must be cleaned. 
 
Note:   
When the  Please clean filter  message is displayed,  please clean or replace 
all three filters at...

6. Maintenance 
104
  
 
3.  The rear filter can be  
accessed as shown. 
 
Once the filters are cleaned, please  reset the filter hours via the Clear Filter Hours op-
tion in the 
v  Reset Menu Descriptions and Functions on page 101 . 
Note: 
Using the projector without t he air filter fitted inside, dirt and dust are sucked into 
the projector, causing failure.  
  

6. Maintenance 
105 
o Replacing Consumable Parts 
During the course of normal usage, consumable  parts become worn out resulting in reduced 
performance. The following guides detail how to replace the various consumable parts within 
the projector quickly and safely. 
Before replacing any of the parts, please take note of the following: 
•  Ensure that the projector is turned o ff and disconnected from the power supply. 
•   Ensure that the projector is in a cle an, stable position before replacing...

6. Maintenance 
106
3.  Insert replacement foam 
and press down firmly. 
 
4.  Replace the filter covers 
by pushing gently in the 
direction shown. 
 
 
Once the filters are replaced, plea se reset the filter hours via the Clear Filter Hours op-
tion in the 
v  Reset Menu Descriptions and Functions on page 101 . 
 
  

6. Maintenance 
107 
Replacing the Lamps 
When a lamp reaches the end of it’s usable lif e, the following message is displayed. Re-
place the lamp. 
 
The projection lamps should be replaced when they burn out. They should only be re-
placed with a certified replacement part,  contact your local dealer if unsure. 
Note: 
1. Lamps are positioned differently. Take ca re not to force the lamps when replac-
ing. 
 
2. Installation of both lamp modules (Lamp 1 and Lamp 2) is required to operate 
the...

6. Maintenance 
108
To replace the lamp, refer to the following. 
1.  Loosen the screw on the lamp 
cover (A), and remove the 
lamp cover as shown (B). 
 
2.   Loosen the two captive screws 
(A) on the lamp module. Lift 
the module handle up (B) in 
the direction shown. 
A
A
 
B
B
 
3.  Pull firmly on the module 
handle in the direction shown 
to remove the lamp. 
4.   Reverse steps 1 to 3 to install 
the new lamp module and re-
place the lamp cover. 
 
Note:   
The filters should be replaced when...