Sony Projector VPL-CH370 User Manual

							51Playing Video and Audio using USB Connection
Playing Video and Audio using USB Connection
BPlaying Video and Audio using USB Connection
Playing Video and Audio using USB 
Connection
You can also play video and audio simply by connecting the projector and computer with a 
USB A-B cable (not supplied).
Playing video and audio using USB connection requires to start USB Display. 
System requirements for using the application are as follows.
OS
Windows XP: Home/Professional
Windows Vista: Home Premium/Business/Ultimate/Enterprise
Windows 7: Home Premium/Professional (Recommended)/Ultimate/Enterprise
Windows 8/8.1
Mac OS X: 10.6.x/10.7.x/10.8.x/10.9.x
CPU 
Pentium4 2.8GHz or faster
1Connecting the projector and your computer with a USB A-B cable (not supplied) 
(page 10).
2Turn on the projector.
Select “Type B USB” as the input source (page 17). After a short time, the projector is 
recognized as a CD-ROM drive in the computer.
3Open “USB Display” in the CD-ROM drive.
 The resolution of your computer changes when the application is started.
 Depending of the computer’s setting, the application may start automatically.
 When you are finished using the projector, you can simply disconnect the USB cable without using 
the Safely Remove Hardware option.
 Movie player (Media Player, etc.) images may not be projected properly.
After starting USB Display, the controller 
appears on the screen, and projection 
playback starts automatically.For Windows:
Starting USB Display
Notes
Playing Video and AudioUsing the Controller
USB Display 
						

							52Playing Video and Audio using USB Connection
For Mac:
ItemsFunctions
Start audio/video 
playback.
Pause audio/video 
playback.
Stop audio/video playback 
(the screen turns black).
Display information about 
USB Display. 
						

							53Indicators
Others
BOthers
Indicators
The indicators allow checking the status and notify you of abnormal operation of the projector.
If the projector exhibits abnormal status, address the problem in accordance with the table 
below.
ON/STANDBY indicator
LAMP/COVER indicator
StatusMeaning/Remedies
Lights in red The projector is in Standby mode.
Flashes in green  The projector is ready to operate after having been turned on. 
 The lamp cools after the projector is turned off.
Lights in green The projector’s power is on.
Lights in orange The projector is in With No Input (Lamp Cutoff) or when the Speaker 
Setting is set to “Always On.”
Flashes in red The projector is in abnormal status. Symptoms are indicated by 
number of flashes. Address the problem in accordance with the 
following. If the symptom is shown again, consult with qualified Sony 
personnel.
Flashes twice The internal temperature is unusually high. Check the items below.
 Check if nothing is blocking the ventilation holes. (pages 4, 4)
 Check if the air filter is not clogged. (page 60)
 Check if the Installation Attitude in the Installation menu is set 
correctly. (page 34)
Flashes six times Unplug the AC power cord from a wall outlet. After checking that the 
ON/STANDBY indicator goes out, plug the power cord to a wall 
outlet again then turn on the projector.
Other number of 
flashesConsult with qualified Sony personnel.
StatusMeaning/Remedies
Flashes in red Symptoms are indicated by number of flashes. Address the problem in 
accordance with the following.
Flashes twice  The lamp cover is not attached securely. (page 58)
Flashes three times The temperature of the lamp is unusually high. Turn off the projector 
and turn it on again after the lamp has cooled. If the same symptom 
occurs, turn off the projector again and remove the lamp (page 58), 
then check if the lamp is not broken.
If the lamp is not broken, reattach the lamp and turn on the projector 
again.
If the symptom occurs again, the lamp may be exhausted. In this case, 
replace the lamp with a new one (page 58).
If the lamp is broken, do not exchange the lamp by yourself. Consult a 
qualified Sony consultant. 
						

							54Messages List
Messages List
When any of the messages listed below appears on the projected image, address the problem in 
accordance with the table below.
MessagesMeaning/RemedyPage
High temp.! Lamp off in 
1 min.Check the items below.
 Check if nothing is blocking the ventilation holes.
 Check if the air filter is not clogged.
 Check if the Installation Attitude in the Installation menu is 
set correctly.4, 34, 
60
Frequency is out of 
range!Change the output setting of the connected equipment to one 
for signals supported by the projector.66
Please check Input-A 
Signal Sel.Set “Input-A Signal Sel.” to “Auto” or select the input signal 
type to suit to the input signal.31
Please clean the filter. Clean the air filter. 60
Please replace the Lamp 
and clean the Filter.Replace the lamp with a new one and clean the air filter. The 
message appears whenever you turn on the power until you 
replace the lamp and reset the lamp timer.58, 60
Projector temperature is 
high. High Altitude 
Mode should be “On” if 
Projector is being used 
at high altitude.When not using the projector at an altitude of 1,500 m or 
higher, check the items below.
 Check if nothing is blocking the ventilation holes.
 Check if the air filter is not clogged.
 Check if Installation Attitude in the Installation menu is set 
correctly. 4, 34, 
60
Not applicable! Invalid key was pressed. –
The control keys are 
locked!“Control Key Lock” is set to “On.” 30
Projector lamp will cut 
off soon.
Press ?/1  key to restart.The ?/1 key was pressed and the projector lamp will be cut off 
soon. To cancel lamp cut off, press the ?/1 key again (the 
projector will return to the on status). To cut off the lamp 
immediately, press and hold the ?/1 key for several seconds.23
Lamp Dimming Reduces lamp output when “With Static Signal” is set. When 
any change in signal is detected, or an operation (remote 
control or control panel) is performed, normal brightness is 
restored.32
Unsupported USB 
device.Connect the designated USB device (USB wireless LAN 
module IFU-WLM3 (not supplied)).11
Unsupported USB hub. The projector does not support USB hubs. Connect the 
designated USB device (USB wireless LAN module IFU-
WLM3 (not supplied)).11
Please check HDBaseT 
Settings.
* VPL-CH375/CH355 
onlySet “HDBaseT/LAN connector” depending on the HDBaseT/
LAN connection. 31 
						

							55Troubleshooting
Others
Troubleshooting
Before asking to have the projector repaired, try to diagnose the problem, following the 
instructions below.
SymptomsRemedyPage
The power is not turned 
on.Check if the AC power cord is firmly connected. –
When the “Control Key Lock” is set to “On,” you cannot turn 
on the projector using the ?/1 key on the projector.30
If the lamp or lamp cover is not attached securely, the projector 
cannot be turned on.58
No image. Check if the connecting cable is connected to external 
equipment firmly.9
Check the computer signal is set for output to an external 
monitor only. If you set your computer to output to both the 
computer’s display and an external monitor, the external 
monitor image may not be displayed properly. Set your 
computer to output to only an external monitor.17
Check if the application “USB Display” or “Projector Station 
for Network Presentation” is running. 47, 51
Check if the input source is correctly selected. 17
Check if the picture is muted by pressing the BLANK key. 7
The application “USB 
Display” or “Projector 
Station for Network 
Presentation” does not 
start.Check if the computer connected to the projector meets the 
system requirement for the applications. 47, 51
The computer cannot 
connect to the projector.  Check “LAN Settings” of the projector.
 Check the condition of the wireless connection. 31
On-screen display does 
not appear.The on-screen display does not appear when “Status” in the 
Operation menu is set to “Off.”30
The aspect ratio of the 
display is not right/the 
image is displayed 
smaller /a portion of 
image does not appear.The image may not display correctly because the input signal 
cannot be judged correctly. In this case, set “Aspect” manually.7, 26, 
28
The image is a 
trapezoid.The images become trapezoidal because of the projection 
angle. In this case, you can correct the trapezoidal distortion, 
using a Keystone feature.7, 20, 
34
When the “V Keystone” is set to “Manual,” the keystone 
feature does not work automatically. Set “V Keystone” to 
“Auto” or “Manual” to set manually.7, 20, 
34
When the projector is installed on an uneven surface, the 
feature may not work properly. In this case, select “Manual” to 
set “V Keystone” manually.7, 20, 
34 
						

							56Troubleshooting
The image is dark/too 
bright.The settings for “Brightness,” “Contrast,” and “Lamp Mode” 
affect brightness of the image. Check if the value is 
appropriate.25, 31
The image will be dark when the lamp is burnt out. Check 
“Lamp Timer,” and replace the lamp with a new one if 
necessary.36, 58
“With Static Signal” is set to “On.”  32
During picture muting, the lamp is dimmed to reduce power 
consumption. 32
When video signal is not input, the lamp is dimmed to reduce 
power consumption.–
The image becomes 
darker or brighter.When the lamp is dimmed for a long time, brightness may 
increase temporarily, but this is not malfunction.–
When the “Lamp Mode” is set to “Auto,” the luminance of the 
lamp changes according to the input image.31
The image is not clear. Check if the projector is in focus. 18
The picture will not be clear if condensation has accumulated 
on the lens. In this case, let the projector sit for about two 
hours with the power on.–
The image is noisy. Check if the connecting cable is connected to the external 
equipment properly.9
No sound. Check that the connecting cables between the projector and 
external video or audio equipment are securely connected.9
Check if the external audio equipment is set properly. –
Audio is not output if “Speaker” is set to “Off.” 29
Audio is not output if audio muting is activated. 7
Check if the volume is not set to minimum. 7, 29
The remote commander 
does not work.Check if the batteries are installed correctly. –
Check if the batteries are not exhausted. –
The fan is noisy. The sound from the fan is often greater than normal to cool the 
lamp, etc. in the following cases.
 “Lamp Mode” is set to “High.”
 The unit is used at a high altitude. “High Altitude Mode” is 
set to “On.”
 The unit is used in the location where the temperature is high.31, 34
If the ventilation holes are blocked, the internal temperature of 
the projector rises and the fan noise becomes larger. 4
The image is distorted 
by the HDBaseT 
connection.Confirm whether the unit’s AC power cord is grounded.
Use the STP (Shielded Twisted Pair) type LAN cable.–
SymptomsRemedyPage 
						

							57Troubleshooting
Others
The image is not 
projected properly when 
the projector is 
connected via the 
HDBaseT connector and 
the cables are inserted or 
removed from other 
connectors. Change the input connector to project the image properly. –
SymptomsRemedyPage 
						

							58Replacing the Lamp
Replacing the Lamp
Replace the lamp with a new one if a message displayed on the projected image (pages 53, 54).
Use an LMP-C281/C250 projector lamp (not supplied) for replacement.
 The lamp remains hot after the projector is 
turned off. If you touch the lamp, you may 
burn your finger. When you replace the 
lamp, wait for at least an hour after 
turning off the projector for the lamp to 
cool sufficiently.
 Do not allow any metallic or inflammable 
objects into the lamp replacement slot after 
removing the lamp, otherwise it may cause 
electrical shock or fire. Do not put your 
hands into the slot.
If the lamp breaks, contact qualified 
Sony personnel. Do not replace the lamp 
yourself.
 When removing the lamp, be sure to pull it 
out straight, by holding the designated 
location. If you touch a part of the lamp other 
than the designated location, you may be 
burned or injured. If you pull out the lamp 
while the projector is tilted, the pieces may 
scatter if the lamp breaks any may cause 
injury.
1Turn off the projector, and disconnect 
the AC power cord from a wall outlet.
2When the lamp has cooled 
sufficiently, open the lamp cover by 
loosening 3 screws. 
You can remove the lamp cover for a 
while when installing on the ceiling.
Take care to prevent the lamp cover from 
falling down, as it is not fixed.
Do not apply pressure to the lamp cover 
while it is open.
Caution
Notes 
						

							59Replacing the Lamp
Others
3Loosen the 3 screws on the lamp (1) 
then pull out the lamp by its grab (
2).
4Insert the new lamp all the way in until 
it is securely in place (
1). Tighten the 
3 screws (
2).
5Close the lamp cover and tighten the 
3 screws.
Be sure to install the lamp and Lamp cover 
securely as it was. If not, the projector 
cannot be turned on.
6Connect the AC power cord to a wall 
outlet and turn on the projector.
7Reset the lamp timer for notification of 
the next replacement time.
Select “Lamp Timer Reset” on the SET 
SETTING menu then press the ENTER 
key. When a message appears, select 
“Yes” to reset the lamp timer (page 29).
Disposal of the used lamp
For the customers in the USA
Lamp in this product contains mercury. 
Disposal of these materials may be 
regulated due to environmental 
considerations. For disposal or 
recycling information, please contact 
your local authorities or the 
Telecommunications Industry 
Association (www.eiae.org).
Note
Grab
Caution 
						

							60Cleaning the Air Filter
Cleaning the Air Filter
When a message appears on the projected image, clean the air filter (page 54).
If the dust cannot be removed from the air filter even after cleaning, replace the air filter with 
a new one. For details on a new air filter, consult with qualified Sony personnel.
If you neglect to clean the air filter, dust may accumulate, clogging it. As a result, the 
temperature may rise inside the unit, leading to a possible malfunction or fire.
1Turn off the projector, and disconnect 
the AC power cord from the AC outlet.
2Draw out the air filter cover.
If you remove the air filter cover when 
power is turned on and the AC power cord 
is not removed from the AC outlet, avoid 
touching the fan inside the unit, as it may 
cause injury.
3Clean the air filter with a vacuum 
cleaner.
Remove the filter holder to remove the 
air filter.The air filter consists of 2 filters.
4Attach the air filter cover to the unit.
Be sure to attach the air filter cover firmly. 
Incorrect attachment of the cover may 
cause a malfunction.
Caution
Note
Air filter cover
Claws
Air 
filter 
Filter 
holder
Note
Upper filter: Black
Lower filter: Gray