BenQ Mx661 Users Manual

Operation 81
FUNCTION DESCRIPTION
Closed 
Caption
Closed Caption Enable
Activates the function by selecting On when the selected input signal 
carries closed captions.
• Captions: An on-screen display of the dialogue, narration, and 
sound effects of TV programs and videos that are closed 
captioned (usually marked as CC in TV listings).
Caption Version
Selects a preferred closed captioning mode. To view captions, select 
CC1, CC2, CC3, or CC4 (CC1 displays captions in the primary 
language in your...

Operation
82
FUNCTION DESCRIPTION
Network 
Settings
Wired LAN
See Controlling the projector through a LAN environment on page 
46 for details.
Wireless LAN
See Controlling the projector through a LAN environment on page 
46 for details.
Projection Log in code
See Using the projection login code on page 60 for details.
AMX Device Discovery
Selecting On the projector can be detected by AMX controller.
Mac Address
Show Mac address.
Reset All 
Settings
Returns all settings to the factory preset values.
The...

Operation 83
FUNCTION DESCRIPTION
Current 
System 
Status
Source
Shows the current signal source.
Picture Mode
Shows the selected mode in the PICTURE menu.
Resolution
Shows the native resolution of the input signal.
Lamp Mode
Shows the current lamp mode.
3D Format
Shows the current 3D mode.
Color System
Shows input system format, NTSC, PAL, SECAM, or RGB.
Equivalent Lamp Hour
Displays the number of hours the lamp has been used.
Firmware Version
Shows firmware version.
6. INFORMATION menu
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Maintenance
84
Maintenance
Care of the projector
Your projector needs little maintenance. The only thing you need to do on a regular basis 
is to keep the lens and case clean.
Never remove any parts of the projector except the lamp. Contact your dealer if other 
parts need replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface. 
• Use a canister of compressed air to remove dust. 
• If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens...

Maintenance 85
Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically 
calculated by the built-in timer. The method of calculating the equivalent lamp hour is as 
follows:
Total (equivalent) lamp hour
= 1 (hours used in Economic mode) + 4/3 (hours used in normal mode)
See Setting Lamp Mode eco function as Economic or SmartEco mode below for more 
information on Economic mode.
The lamp hour in Economic mode is calculated as...

Maintenance
86presentation, select Disable. The projector will not automatically shut down in a certain 
time period.
Downloaded From projector-manual.com BenQ Manuals 

Maintenance 87
Timing of replacing the lamp
When the Lamp indicator lights up red or a message appears suggesting it is time to 
replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a 
malfunction in the projector and in some instances the lamp may explode.
Do not attempt to replace the lamp yourself. Contact the qualified service personnel for 
replacement.
The Lamp indicator light and Temperature warning light will light up if the lamp becomes too 
hot. See...

Maintenance
88
Replacing the lamp
•Hg - Lamp contains mercury. Manage in accordance with local 
disposal laws. See www.lamprecycle.org.
• If lamp replacement is performed while the projector is suspended upside-down from the 
ceiling, make sure that no one is underneath the lamp socket to avoid any possible injury or 
damage to the human eyes caused by fractured lamp.
• To reduce the risk of electrical shock, always turn the projector off and disconnect the power 
cord before changing the lamp.   
• To...

Maintenance 89 3. Remove the lamp cover by (a) sliding 
the cover toward the side of the 
projector and (b) lifting it off.
• Do not turn the power on with the lamp 
cover removed.
• Do not insert your fingers between the 
lamp and the projector. The sharp edges 
inside the projector may cause injuries.
4. Loosen the screws that secure the 
lamp.
5. Lift the handle so that it stands up. Use 
the handle to slowly pull the lamp out 
of the projector.
• Pulling it too quickly may cause the lamp to 
break...

Maintenance
9011. Restart the projector.
Do not turn the power on with the lamp cover removed.
Resetting the lamp timer
12. After the startup logo, open the On-Screen 
Display (OSD) menu. Go to the SYSTEM 
SETUP: Advanced > Lamp Settings 
menu. Press MODE/ENTER. The Lamp 
Settings page displays. Press   to highlight 
Reset lamp timer and press MODE/
ENTER. A warning message displays asking if you want to reset the lamp timer. 
Highlight Reset and press MODE/ENTER. The lamp time will be reset to 0.
Do not...