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...

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...

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...

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...

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...

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...

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...

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...

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...

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....