BenQ Projector TH670 User Manual

							Maintenance 61
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 Power below for more information on Economic mode.
The lamp hour in Economic mode is calculated as 3/4 of that in Normal mode. That is, 
using the projector in Economic mode helps to extend the lamp hour by 1/3.
To obtain the lamp hour information:
1. Open the OSD menu and go to the Advanced menu > System Setup: 
Advanced > Lamp Settings menu. Press OK on the projector or remote 
control.
2. Select Lamp Timer and press OK on the projector or remote control.
3. You will see the Equivalent Lamp Hour information displaying on the menu.
4. To leave the menu, press MENU on the projector or remote control.
You can also get the lamp hour information on the Information menu.
Extending lamp life
The projection lamp is a consumable item. To keep the lamp life as long as possible, 
you can do the following settings via the OSD menu or remote control.
Setting Lamp Power
Using Economic/SmartEco mode will reduces system noise and power 
consumption. If the Economic/SmartEco
 mode is selected, the light output will be 
reduced and result in darker projected pictures, the projector protected for longer 
working life.
Setting the projector in Economic/SmartEco mode also extends the lamp 
operation life. To set Economic/SmartEco
 mode, go to the Advanced menu > Picture > Lamp Power menu and press  / .
The lamp modes are defined as the chart below
:
Lamp PowerDescription
NormalProvides full lamp brightness
EconomicLower brightness to extend the lamp life and decreases the fan 
noise
SmartEcoAdjusts the lamp power automatically depending on the 
content brightness level 
						

							Maintenance
62
Setting Auto Power Off
This function allows the projector to turn off automatically if no input source is 
detected after a set period of time to prevent unnecessary waste of lamp life.
To  s e t  Auto Power Off, go to the 
Advanced menu > System Setup: Basic > 
Auto Power Off menu and press  / . The time period can be set from 5 to 30 
minutes in 5-minute increments. If the preset time lengths are not suitable for your 
presentation, select Disable. The projector will not automatically shut down in a 
certain time period. 
						

							Maintenance 63
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.
The Lamp indicator light and Temperature warning light will light up if the lamp 
becomes too hot. See Indicators on page 67 for details.
The following lamp warning displays will remind you to change the lamp.
The warning messages below are for reference only. Please follow the actual on-
screen instructions to prepare and replace the lamp
.
StatusMessage
It is strongly recommended that you replace 
the lamp at this stage. The lamp is a 
consumable item. The lamp brightness 
diminishes with use. This is normal lamp 
behavior. You can replace the lamp whenever 
you notice that the brightness level has 
significantly diminished.
The lamp MUST be replaced before the 
projector will operate normally. 
						

							Maintenance
64
Replacing the lamp (FOR SERVICE PERSONNEL 
ONLY)
• 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 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 compromising image 
quality by touching the lens, do not touch the empty lamp comparent 
when the lamp is removed.
• This lamp contains mercury. Consult your local hazardous waste 
regulations to dispose of this lamp in a proper manner.
• To assure optimal performance from the projector, it is recommended 
that you purchase a BenQ projector lamp for lamp replacement.
• Ensure good ventilation when handling broken lamps. We recommend 
that you use respirators, safety glasses, goggles or face shield and wear 
protective clothing such as gloves.
1. Turn the power off and disconnect the projector from the 
power outlet. If the lamp is hot, avoid burns by waiting for 
approximately 45 minutes until the lamp has cooled.
2. Loosen the screw on the lamp cover. 
						

							Maintenance 65 3. Remove the lamp cover by (a) 
pushing the lamp cover upward 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 and scatter 
broken glass in the projector.
• Do not place the lamp in locations 
where water might splash on it, 
children can reach 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.
6. Insert the new lamp into the lamp 
comparent and make sure it fits in 
the projector.
(a)(b) 
						

							Maintenance
6611. 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 
Advanced menu > System Setup: 
Advanced > Lamp Settings > Reset 
Lamp Timer menu and press OK on 
the projector or remote control. A 
warning message displays asking if you want to reset the lamp timer. Select 
Reset and press OK on the projector or remote control. The lamp time will be 
reset to 0.
Do not reset if the lamp is not new or replaced as this could cause damage. 
7. Tighten the screws that secure the 
lamp.
• Loose screw may cause a bad 
connection, which could result in 
malfunction.
• Do not over tighten the screws.
8. Ensure the handle is fully laid flat and 
locked in place.
9. Replace the lamp cover by sliding it 
into place.
10. Tighten the screw that secures the 
lamp cover. 
• Loose screw may cause a bad 
connection, which could result in 
malfunction.
• Do not over tighten the screw.
(a)(b) 
						

							Maintenance 67
Indicators
LightStatus & DescriptionPOWERTEMPLAMP1LAMP2
Pow e r  eve n t s
Orange Off Off Off
Stand-by
Green
FlashingOff Off OffPowering up
Green Off Off OffNormal operation
Orange
FlashingOff Off OffNormal power-down cooling
Red 
FlashingRed 
FlashingRed 
FlashingOffDownload
Green Off Red OffCW start fail
Red 
FlashingOff Off OffScaler shutdown fail (data abord)
Red Off Red OffScaler reset fail (video projector only)
Burn-in message
Green Off Off
Burn-in ON
Green Green GreenBurn-in OFF
Lamp error messages
Off Off Red Off
Lamp1 error in normal operation
Off Off Orange OffLamp is not lit up
Thermal error messages
Red Red Off Off
Fan 1 error (the actual fan speed is ±25% outside 
the desired speed)
RedRed 
FlashingOff OffFan 2 error (the actual fan speed is ±25% outside 
the desired speed)
Red Green Off OffFan 3 error (the actual fan speed is ±25% outside 
the desired speed)
Green Red Off OffTemperature 1 error (over limited temperature)
GreenRed 
FlashingOff OffThermal Sensor 1 open error
Green Green Off OffThermal Sensor 1 short error
GreenGreen
FlashingOff OffThermal IC #1 I2C Connection error
Green
FlashingRed Off OffTemperature 2 error (over limited temperature)
Green
FlashingRed 
FlashingOff OffThermal Sensor 2 open error
Green
FlashingGreen Off OffThermal Sensor 2 short error 
						

							Maintenance
68
Green
FlashingGreen
FlashingOff OffThermal IC #2 I2C Connection error 
						

							Troubleshooting 69
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 
cable.Plug the power cord into the AC inlet 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.
CauseRemedy
The video source is not turned on or 
connected correctly.Turn the video source on and check that the 
signal cable is connected correctly.
The projector is not correctly 
connected to the input signal device.Check the connection.
The input signal has not been 
correctly selected.Select the correct input signal with the 
Source key on the projector or remote 
control.
The lens cover is still closed. Open the lens cover.
CauseRemedy
The projection lens is not correctly 
focused.Adjust the focus of the lens using the focus 
ring.
The projector and the screen are not 
aligned properly.Adjust the projection angle and direction as 
well as the height of the unit if necessary.
The lens cover is still closed. Open the lens cover.
CauseRemedy
The battery is out of power. Replace the battery with new one.
There is an obstacle between the 
remote control and the projector.Remove the obstacle.
You are too far away from the 
projector.Stand within 12 meters (39 feet) of the 
projector.
CauseRemedy
You do not remember the password.Please see Entering the password recall 
procedure on page 32 for details. 
						

							Specifications
70
Specifications
All specifications are subject to change without notice.
Lamp life results will vary depending on environmental conditions and usage.
Optical
Resolution
1920x1080, 1080p
Display system
1-CHIP DMD
Lens F/Number
F= 2.55~2.79
f= 22.3mm~26.76mm
Offset
116%
Zoom ratio1.2X
Lamp
210W
Electrical
Power supply
AC100–240V, 2.90 A,
50-60 Hz (Automatic)
Power consumption
270 W (Max.); < 0.5 W (Standby) 
Mechanical
We i g h t
3.0 kg (6.6 lbs.)
Output terminals
Speaker
(Stereo) 10 watt x 1
Audio signal output
PC audio jack x 1
Control
IR receiver x 1 (front)
RS-232 serial control
9 pin x 1USB
Mini B
Supports firmware upgrade
Type A
1.5A output
Input terminals
Computer input
RGB input
D-Sub 15-pin (female) x 2
Video signal input
VIDEO
RCA jack x 1
SD/HDTV signal input
Analog - Component RCA jack x 3
   (through RGB input)
Digital-HDMI x 1
Audio signal input
PC audio jack x 1 for audio input
PC audio jack x 1 for microphone audio 
input
RCA audio jack (L/R) x 2
Environmental Requirements
Operating temperature
0°C-40°C at sea level
Operating relative humidity
10%-90% (without condensation)
Operating altitude
0-1499 m at 0°C-35°C
1500-3000 m at 0°C-30°C (with High 
Altitude Mode on)