Hitachi Projector CP-WU8451 User Manual

							121
Troubleshooting
Regarding the indicator lamps
When operation of the LAMP, TEMP and POWER indicators differs from usual, 
check and cope with it according to the following table.
POWER 
indicatorLAMP 
indicatorTEMP 
indicatorDescription
Lighting
In 
Orange
Turned
offTurned
offThe projector is in a standby state.
Please refer to the section “Power on/off”.
Blinking
In 
Green
Turned
offTurned
offThe projector is warming up.
Please wait.
Lighting
In 
Green
Turned
offTurned
offThe projector is in an on state.
Ordinary operations may be performed.
Blinking
In 
Orange
Turned
offTurned
offThe projector is cooling down.
Please wait.
Blinking
In 
Red
(discre-
tionary)(discre-
tionary)The projector is cooling down. A certain error 
has been detected.Please wait until POWER indicator finishes blinking, 
and then perform the proper measure using the item 
descriptions below.
Blinking
In 
Red
or
Lighting
In 
Red
Lighting
In 
Red
Turned
offThe lamp does not light, and there is a 
possibility that interior portion has become 
heated.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the following items, and then turn the power on again.
• Is there blockage of the air passage aperture?
• Is the air filter dirty?
•  Please use the unit within the usage temperature 
parameters (0°C to 35°C, 40°C or 45°C (
Users 
Manual (concise))).
If the same indication is displayed after the remedy, 
please change the lamp referring to the section 
Replacing the lamp.
Blinking
In 
Red
or
Lighting
In 
Red
Blinking
In 
Red
Turned
offThe lamp cover has not been properly fixed. 
Please turn the power off, and allow the projector to 
cool down at least 45 minutes. After the projector has 
sufficiently cooled down, please make confirmation 
of the attachment state of the lamp cover. After 
performing any needed maintenance, turn the power 
on again. If the same indication is displayed after 
the remedy, please contact your dealer or service 
company.
(continued on next page) 
						

							122
Troubleshooting
Regarding the indicator lamps (continued)
POWER 
indicatorLAMP 
indicatorTEMP 
indicatorDescription
Blinking
In 
Red
or
Lighting
In 
Red
Turned
offBlinking
In 
Red
The cooling fan is not operating.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation 
that no foreign matter has become caught in the fan, 
etc., and then turn the power on again.
If the same indication is displayed after the remedy, 
please contact your dealer or service company.
Blinking
In 
Red
or
Lighting
In 
Red
Turned
offLighting
In 
Red
There is a possibility that the interior portion 
has become heated.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the following items, and then turn the power on again.
• Is there blockage of the air passage aperture?
• Is the air filter dirty?
•  Please use the unit within the usage temperature 
parameters (0°C to 35°C, 40°C or 45°C (
Users 
Manual (concise))).
• Is the setting for ALTITUDE appropriate? 
•  Is the exhaust air (hot/cold) from peripheral  
equipments blowing against the ventilation opening 
of projector?
For details on ALTITUDE, refer to ALTITUDE 
of SERVICE in the OPTION menu (
73). If the 
projector is used with a wrong setting, it may cause 
damage to the projector itself or the parts inside.
(continued on next page) 
						

							123
Troubleshooting
Regarding the indicator lamps (continued)
POWER 
indicatorLAMP 
indicatorTEMP 
indicatorDescription
Lighting
In 
Green
Simultaneous
blinking in 
Red
It is time to clean the air filter.
Please immediately turn the power off, and clean or 
change the air filter referring to the section Cleaning 
and replacing the air filter. After cleaning or 
changing the air filter, please be sure to reset the 
filter timer. After the remedy, reset the power to ON.
Lighting
In 
Green
Alternative
blinking in 
Red
There is a possibility that the interior portion 
has become overcooled.
Please use the unit within the usage temperature 
parameters (0°C to 35°C, 40°C or 45°C (
Users 
Manual (concise))). After the treatment, reset the 
power to ON.
Blinking In 
Green for 
approx. 3 
seconds.Turned
offTurned
off
At least 1 Power ON schedule is saved to the 
projector.
Please refer to 3.1.7 Schedule Settings in the 
Network Guide.
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							124
• When the interior portion has become overheated, for safety 
purposes, the projector is automatically shut down, and the indicator lamps 
may also be turned off. In such a case, disconnect the power cord, and wait at 
least 45 minutes. After the projector has sufficiently cooled down, please make 
confirmation of the attachment state of the lamp and lamp cover, and then turn 
the power on again. NOTE
For the SECURITY indicator, see SECURITY INDICATOR in the SECURITY 
menu 
(98). 
For the SHADE indicator, see the section Temporarily shading the screen 
(
37). 
The FILTER indicator shows the condition of the air filter. Utilize this feature to 
keep the interior of the projector in good condition.
FILTER indicator Description
Turned offThe air filter is clean.  
No need to clean up.
Lighting In 
Orange
The air filter is going to be choked.  
It is recommended to clean it. In addition, please see the 
section There is a possibility that the interior portion has 
become heated (
122).
Lighting In 
Red
The air filter is choked.  
It is required to turn the power off and clean the air filter 
immediately. In addition, please see the section There is a 
possibility that the interior portion has become heated (
122).
Troubleshooting
Regarding the indicator lamps (continued)
Resetting all settings
When it is hard to correct some wrong settings, the FACTORY RESET function of 
SERVICE item in OPTION menu (
80) can reset all settings (except settings such 
as LANGUAGE, AUTO BLANK, LAMP TIME, FILTER TIME, FILTER MESSAGE, 
STANDBY MODE, COMMUNICATION, SECURITY and NETWORK) to the factory 
default.
• The FILTER indicator might light up in orange or red when something 
blocks the intake vents even though the air filter is clean.
• The FILTER indicator might light up differently from other indicators or display 
messages related to cleaning the air filter. Follow the prompt that is displayed 
earlier. NOTE 
						

							125
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
About the phenomenon confused with a machine defect, check and cope with it 
according to the following table.
Phenomenon Cases not involving a machine defectReference 
page
Power does not 
come on.
The electrical power cord is not plugged in.
Correctly connect the power cord.17
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please disconnect the power plug from the power outlet, 
and allow the projector to cool down at least 10 minutes, 
then turn the power on again.
17
Either there is no lamp and/or lamp cover, or either 
of these has not been properly fixed.
Please turn the power off and disconnect the power 
plug from the power outlet, and allow the projector to 
cool down at least 45 minutes. After the projector has 
sufficiently cooled down, please make confirmation of 
the attachment state of the lamp and lamp cover, and 
then turn the power on again.
11 3
Neither sounds 
nor pictures are 
output.
The signal cables are not correctly connected.
Correctly connect the connection cables.10 ~ 15
Signal source does not correctly work.
Correctly set up the signal source device by referring to 
the manual of the source device.
–
The input changeover settings are mismatched.
Select the input signal, and correct the settings.27
AV MUTE function is working.
Press AV MUTE button on the remote control.26
The USB TYPE B port is selected as the picture input 
source even if MOUSE is selected for USB TYPE B. 
Select USB DISPLAY for USB TYPE B in OPTION menu 
to project the picture input to the port. Otherwise select 
other port for picture input.
71
The USB TYPE B port is not recognized as an input 
port because of electrical noise.
Temporarily set to MOUSE with the USB TYPE B on 
the OPTION menu, and then return it to USB DISPLAY 
to enable the USB TYPE B port to be recognized as an 
input port.
71
(continued on next page) 
						

							126
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon Cases not involving a machine defectReference 
page
Neither sounds 
nor pictures are 
output. 
(continued)
The projector does not recognize the USB storage 
device inserted into USB TYPE A 
ports. 
Use the REMOVE USB function first, remove the USB 
storage device, and then insert it into the port again.  
Before removing the USB storage device, be sure to use 
the REMOVE USB function on the Thumbnail screen, 
which appears when the 
USB TYPE A is selected as the 
input source.
13, 102
Sound does not 
come out.
The signal cables are not correctly connected.
Correctly connect the audio cables.10 ~ 15
The volume is adjusted to an extremely low level.
Adjust the volume to a higher level using the menu 
function or the remote control.
26, 60
The AUDIO SOURCE/SPEAKER setting is not correct.
Correctly set the AUDIO SOURCE/SPEAKER in AUDIO 
menu.
60
The Sound button (♪) or checkbox is disabled.
If you have selected USB TYPE A, turn the sound on 
from the Thumbnail menu. 
If you have selected USB TYPE B, remove the check 
mark from the Sound checkbox in the Options window of 
“LiveViewer Lite for USB”. 
If you have selected LAN, remove the check mark from 
the Sound checkbox in the Option menu of “LiveViewer”.
102, 112
No pictures are 
displayed.
The signal cables are not correctly connected.
Correctly connect the connection cables.10 ~ 15
The brightness is adjusted to an extremely low level.
Adjust BRIGHTNESS to a higher level using the menu 
function.
47
The computer cannot detect the projector as a plug 
and play monitor.
Make sure that the computer can detect a plug and play 
monitor using another plug and play monitor.
11
The lens shade is closed.
Check whether the SHADE indicator is blinking. If it is 
blinking, press SHADE button on the control panel.
37
(continued on next page) 
						

							127
Phenomenon Cases not involving a machine defectReference 
page
The remote 
control does not 
work.
The batteries in the remote control are near the end.
Replace the batteries.18
The ID numbers set in the projector and the remote 
control are different.
Press the ID button with the same ID number as the 
projector, then perform the desired operation. The ID 
number set in the projector can be displayed by pressing 
any of the ID buttons on the remote control for 3 seconds 
while the lamp is on.
18
Video screen
display freezes.
The FREEZE function is working.
Press FREEZE button to restore the screen to normal.37
Colors have 
a faded-out 
appearance, 
or color tone is 
poor.
Color settings are not correctly adjusted.
Perform picture adjustments by changing the COLOR TEMP, 
COLOR and/or TINT settings, using the menu functions.48
COLOR SPACE setting is not suitable.
Change the COLOR SPACE setting to AUTO, RGB, 
SMPTE240, REC709 or REC601. 
53
Pictures appear 
dark.
The brightness and/or contrast are adjusted to an 
extremely low level.
Adjust BRIGHTNESS and/or CONTRAST settings to a 
higher level using the menu function.
47
The projector is operating in Eco mode.
Set ECO MODE to NORMAL, and set AUTO ECO 
MODE to OFF, in the SETUP menu.
58
The lamp is approaching the end of its product 
lifetime.
Replace the lamp.
113, 114
Pictures appear 
blurry.
The lens cover is attached.
Remove the lens cover.4
Either the focus and/or horizontal phase settings are 
not properly adjusted.
Adjust the focus using the FOCUS + / - buttons, and/or H 
PHASE using the menu function.
30, 52
(continued on next page)
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued) 
						

							128
Phenomenon Cases not involving a machine defectReference 
page
Pictures 
appear blurry. 
(continued)The lens is dirty or misty.
Clean the lens referring to the section Caring for the lens.11 7
Some kind 
of image 
degradation 
such as 
flickering or 
stripes appear 
on screen. 
When the projector is operating in Eco mode, 
flickering may appear on screen.
Set ECO MODE to NORMAL, and set AUTO ECO 
MODE to OFF, in the SETUP menu.
58
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the IMAGE menu smaller.51
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.53
The FRAME LOCK function cannot work on the 
current input signal.
Set FRAME LOCK in the INPUT menu to OFF.
55
The computer 
connected to 
the USB TYPE 
B port of the 
projector does not 
start up.
The computer cannot start up in the current 
hardware configuration.
Disconnect the USB cable from the computer, then 
reconnect it after starting up the computer.
11 ,  1 2
RS-232C does 
not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
59
The COMMUNICATION TYPE for the CONTROL port 
is set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the 
OPTION - SERVICE - COMMUNICATION menu.
76, 77
Network does 
not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
59
The same network address is set for both wireless 
and wired LAN.
Change the network address setting for wireless or wired LAN.
82, 86
(continued on next page)
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued) 
						

							129
• Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect. NOTE
Phenomenon Cases not involving a machine defectReference 
page
The IR and RS-
232C does not 
work on  
HDBaseT
TM

connection.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
58
HDBaseT 
connection 
does not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
58
The connected equipment may not be supported by 
HDBaseT.
Refer to Users manual(detailed) for connection.
13
IR and LAN 
does not work 
via HDBaseT.
Check if the IR setting is OFF under HDBaseT.
EASY MENU > ADVANCED MENU > OPTION >  
SERVICE 
> REMOTE RECEIV.
75
Check if the LAN setting is HDBaseT.
EASY MENU > ADVANCED MENU > NETWORK > 
WIRED NETWORK
91
LAN does not 
work, if LAN is 
connected to 
the projector 
while having 
an input signal 
from HDBaseT.
Check if the LAN setting is HDBaseT.
EASY MENU > ADVANCED MENU > NETWORK > 
WIRED NETWORK
91
This projector is compatible with 100BASE-T only.
Check the specification of the connected equipments.–
If the LAN cable is connected with the hub, try to change 
the connected port at the hub–
If the LAN cable is connected directly to the computer, 
try to connect to other computer–
No image is 
displayed via 
HDBaseT.
Check the LAN cable if it is CAT5e certified or higher.–
Try to change the LAN cable.–
If the LAN cable is connected with more than 3 extension 
connector, the transmission of 100 meters may fail.–
Check if the extension connector is compatible with 
CAT5e.
All LAN cable and extension connector connected with 
HDBaseT port must be CAT5e certified. 
–
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued) 
						

							130
• Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect. NOTE
Phenomenon Cases not involving a machine defectReference 
page
NETWORK 
BRIDGE 
function does 
not work.The NETWORK BRIDGE function is turned off.
Select NETWORK BRIDGE for COMMUNICATION TYPE 
item in the OPTION - SERVICE - COMMUNICATION 
menu.
76, 77
Schedule 
function does 
not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
59
The internal clock has been reset.
Once you turn off the projector in the SAVING mode or 
the AC power, the current date and time setting is reset.
Check the DATE AND TIME setting for WIRELESS 
SETUP or WIRED SETUP in the NETWORK menu.
83, 87
When the 
projector is 
connected to 
the network, it 
powers off and 
on as described 
below.
Powers off
POWER 
indicator blinks 
in orange a few 
times
Goes into  
standby mode
Disconnect the LAN cable and check that the 
projector is working properly.
If this phenomenon occurs after connecting to the 
network, there may be a loop between two Ethernet 
switching hubs within the network, as explained below.
-  There are two or more Ethernet switching hubs in a 
network.
- Two of the hubs are doubly connected by LAN cables.
-  This double connection forms a loop between the two 
hubs.
Such a loop may have an adverse effect on the projector 
as well as the other network devices.
Check the network connection and remove the loop by 
disconnecting the LAN cables such that there is only one 
connecting cable between two hubs.
–
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)