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Troubleshooting (cont.)
Self-diagnostic indication
When something abnormal occurs with the monitor, this function informs you of the condition of the monitor with the self-
diagnostic lamps, allowing for smooth service work.
If the monitor screen turns off and the self-diagnostic
lamps light or flash
If the self-diagnostic lamps light or flash in red, check the following
before consulting the dealer where you purchased the monitor.
• If the self-diagnostic lamp 1 (upper) flashes, lamp 2 (middle)
lights, and lamp 3 (lower) flashes
This may be caused by the dusty intakes on the rear. If this
happens, switch off the main power using the POWER switch
(set to “‡ (off)”), unplug the AC power cord, then clean the
intakes by referring to the instruction on page 5.
After cleaning, switch on the monitor’s main power again. If
the self-diagnostic lamps do not go off, consult your dealer
immediately.
If the monitor screen dims a little and “TEMP. OVER”
appears (or flashes)
If “TEMP. OVER” appears or flashes at the right bottom of the
screen, check the following before consulting the dealer where
you purchased the monitor.
“TEMP. OVER” appears to warn you of internal heat buildup, which
is usually caused by accumulated dust around the intakes or by
improper installation. If the cause of the internal heat buildup is
eliminated, this indication disappears and the screen returns to
normal brightness.
• If “TEMP. OVER” flashes in yellow
This may be caused by the dusty intakes on the rear. If this
happens, switch off the main power using the POWER switch
(set to “‡ (off)”), unplug the AC power cord, then clean the
intakes by referring to the instruction on page 5.
– After cleaning, switch on the monitor’s main power again.
If “TEMP. OVER” still flashes, this problem may be caused by
improper installation or improper location of the monitor.
In this case, consult your dealer immediately to solve this
improper installation and to improve the circumstances
around the monitor.
• If “TEMP. OVER” appears in red
“TEMP. OVER” will be shown for about two minutes, the monitor
will shut off automatically, then the self-diagnostic lamps light in
red. If this happens, switch off the main power using the POWER
switch (set to “‡ (off)”), unplug the AC power cord, then consult
your dealer immediately.
If the trouble still persists, follow the procedure below:
1 Check which lamps are lit or flashing.
On the Self-diagnostic Report Sheet (below), check the box
next to “Lights” or “Flashes” of the corresponding lamp or
lamps.
• Only one lamp may light or flash, or all three lamps may do
so.
2 Switch off the POWER switch on the back of the
monitor.
3 Unplug the power cord.
4 Call your dealer and tell them which lamps are lit or
flashing. (Copy and fax the Self-diagnostic Report
Sheet below.)
NOTE
• If you switch on the main power immediately after switching it
off (or after recovering from a brief power interruption), the self-
diagnostic lamps may light (or flash), and no image may appear
on the screen. In this case, switch off the main power again, wait
for about 10 seconds, then switch it on again. If no self-diagnostic
lamps light or flash, you can operate and use the monitor as usual.
Self-diagnostic Report Sheet
Store name where you purchased the monitor
To
Model name: LCD DISPLAY MONITOR GM-H40L2A
The self-diagnostic lamps light or flash as listed on the following
table. Please give me immediate advice or service if necessary.
Self-diagnostic lamp
No. Lamp position Conditions
1 Upper
& Lights & Flashes
2Middle
& Lights & Flashes
3Lower
& Lights & Flashes
TEMP. OVER
& Lights & Flashes
Your Name
Telephone No.:
Address:
Self-diagnostic
lamps
Power lamp
“TEMP. OVER” appears here.
06-42_GM-H40L2A-f.indd 4006-42_GM-H40L2A-f.indd 40 06.4.24 5:21:22 PM06.4.24 5:21:22 PM