Hitachi CP-A221N User Manual page 106

Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon
The computer The computer cannot start up in the current hardware
connected to the configuration.
USB TYPE B port
Disconnect the USB cable from the computer, then
of the projector
reconnect it after starting up the computer.
does not start up.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP menu.
RS-232C does
The COMMUNICATION TYPE for the CONTROL port is
not work.
set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the
OPTION - SERVICE - COMMUNICATION menu.
The SAVING function is working.
Network does
not work
Select NORMAL for STANDBY MODE item in the SETUP menu.
NETWORK The NETWORK BRIDGE function is turned off.
BRIDGE
Select NETWORK BRIDGE for COMMUNICATION TYPE
function does
item in the OPTION - SERVICE - COMMUNICATION menu.
not work
The SAVING function is working.
Schedule function
does not work
Select NORMAL for STANDBY MODE item in the SETUP menu.
Disconnect the LAN cable and check that the projector
When the
is working properly.
projector is
If this phenomenon occurs after connecting to the network,
connected to the
there may be a loop between two Ethernet switching hubs
network, it powers
off and on as within the network, as explained below.
described below.
- There are two or more Ethernet switching hubs in a network.
Powers off
- Two of the hubs are doubly connected by LAN cables.
- This double connection forms a loop between the two hubs.
POWER indicator
Such a loop may have an adverse effect on the projector
blinks in orange a
as well as the other network devices.
few times
Check the network connection and remove the loop by
disconnecting the LAN cables such that there is only one
Goes into
standby mode connecting cable between two hubs.
Video files cannot The "LiveViewer" has been intentionally or accidentally
be played properly forced to shut down.
on a computer
DirectDraw
on which the
Please refer to the Microsoft
"LiveViewer" was
page on how to enable DirectDraw
run.
NOTE
• 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.
106
Cases not involving a machine defect
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