Sharp PN-L802B (serv.man3) Handy Guide ▷ View online
Troubleshooting
Service Menu 2
The “HARDWARE CHECK” is a good way to
determine problems with the Power Supply,
Backlights, and over- temperature conditions.
If a SYS PW1 – PW5 are indicating
NG
, then
replace the Delta DC Power Supply PWB.
If the BACKLIGHT is indicating
NG,
replace
the Delta DC Power Supply PWB.
When a THML 1-3 is
NG,
the unit may have
been installed incorrectly with limited air
flow, or has a defective THML component.
Move set to an open air condition to test.
Replace PC/IF PWB if the problem persists
which indicates a bad THML.
Please note: THML’s are simple Thermistor.
The PNL702B only has 1 Thermistor and it is
located on the I/F PWB, however, the
software will display all three as the same.
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Troubleshooting
Service Menu 2
The “WHITE BALANCE SETTING” is an
advanced adjustment that you should not
adjust, please leave the default settings as
loaded on the replacement I/F PWB.
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Troubleshooting
Service Menu 3
Service menu 3 is the final stage for setting
up an new I/F PWB. This is where you
enter the:
Model Name
Serial Number
Usage Time (from old PWB)
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This Concludes Our
Whiteboard Service Training
