Ricoh PJ WX4152 Field Service Manual page 180

5. Troubleshooting
Error
Status / LED display
ID
[Status]
"The network error has
occurred. Turn off the power
and turn on. When the same
error occurs again, please
contact the service center."
was displayed and the
19
network or USB memory
function does not work.
Projection is possible after the
message is closed except for
the network or USB memory.
[LED display]
None
[Status]
Firmware update via USB
memory does not end
normally.
[LED display]
-
[A] Lamp [B] Temp
Flashing interval: 0.9
seconds
*1 : Mercury bridge
This projector uses a high-pressure mercury lamp as a light source. Mercury is used inside, which is in a
liquid state at normal temperature, and in a gasified state when the lamp is lit.
The gasified mercury returns to a liquid state when the lamp is turned off. At that time, there are very rare
cases where the liquefied mercury adheres between the electrodes, which may cause short-circuit
between the electrodes. This phenomenon is called "mercury bridge". (See figure below)
178
Cause
• Turn off the power and turn it
Software error
• Turn off the power and update
Replace the network board.
Hardware error (page 81 "Network Board (PJ
WX4152N/WX4152NI)")
Make sure that only one firmware
Updated with the file (.sfw) for the target model is in
firmware of another the root directory of the USB
model memory, and update the firmware
again.
• Replace the main board.
Hardware error
• Replace the network board.
Solution
back on.
the firmware. (page 117
"Firmware Update")
(page 89 "Main Board")
(page 81 "Network Board (PJ
WX4152N/WX4152NI)")