BenQ Ms502 Users Manual

Operation 41
Function Description
Baud Rate
Selects a baud rate that is identical with your computer’s so that you 
can connect the projector using a suitable RS-232 cable and update or 
download the projector’s firmware. This function is intended for 
qualified service personnel.
Test PatternSelecting On enables the function and the projector displays the grid 
test pattern. It helps you adjust the image size and focus and check that 
the projected image is free from distortion.
Closed 
Caption
Closed...

Operation 42
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.
Color System
Shows input system format: NTSC, PAL, SECAM, YUV, or RGB.
Equivalent Lamp Hour
Displays the number of hours the lamp has been used.
Firmware Version
Shows the firmware version of your projector.6. INFORMATION menu
Downloaded From projector-manual.com BenQ Manuals 

Maintenance 43
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 44
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. 
See Setting Lamp Mode as Economic below for more information on Economic mode.
To obtain the lamp hour information:
1. Press MENU/EXIT and then press  /  to highlight the SYSTEM SETUP: 
Advanced menu.
2. Press  to highlight Lamp Settings and press MODE/ENTER. The Lamp 
Settings page displays.
3. You will see the...

Maintenance 45
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. 
Go to  http://lamp.benq.com  for a replacement lamp.
The LAMP indicator light  and TEMPerature warning light  will light up if the lamp becomes too hot. 
Turn the power off and let the projector cool for 45...

Maintenance
46
Replacing the lamp
•  To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before 
changing the lamp.
•  To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the  lamp.
•  To reduce the risk of injuries to fingers and damage  to internal components, use caution when removing 
lamp glass that has shattered into sharp pieces.
•  To reduce the risk of injuries to fingers and/or co mpromising...

Maintenance 47
7. Use the handle to slowly pull the lamp out of 
the projector.
•  Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector.
•  Do not place the lamp in locations where water might  splash on it, children can re ach it, or near flammable 
materials.
•  Do not insert your hands into the projector after the  lamp is removed. If you touch the optical components 
inside, it could cause color unevenness and distortion of 
the projected images.
8. As shown in...

Maintenance 4814. Connect the power and restart the projector.
Do not turn the power on with the lamp cover removed. 
Resetting the lamp timer
15. 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. Highlight Reset lamp timer. 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 reset if...

Maintenance 49
Indicators
LightStatus & Description
Pow e r  eve n t s
Off Off OrangeStand-by mode.
Off OffGreen
FlashingPowering up.
Off Off GreenNormal operation.
Off OffOrange
Flashing
•  The projector needs 90 seconds to cool down as it was 
abnormally shut down without the normal cooling down 
process.
•  The projector needs to cool for 90 seconds after the 
power is turned off.
•  The projector has shut down automatically. If you try to 
re-start the projector, it will shut down again. Please...

Troubleshooting 50
Troubleshooting
The projector does not turn on.
No picture
Blurred image
Remote control does not work
The password is incorrect
CauseRemedy
There is no power from the power cord.Plug the power cord into the AC power jack on 
the projector, and plug the power cord into the 
power outlet. If the power outlet has a switch, 
make sure that it is switched on.
Attempting to turn the projector on again 
during the cooling process.Wait until the cooling down process has 
completed....