Icom IC-7800 - About protection indications

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■ About protection indications
The IC-7800 has a 2-step protection function to pro-
tect the final power amplifiers.
The protector detects the power amplifier tempera-
ture and activates when the temperature becomes ex-
tremely high.
• Power down transmission
Reduces the transmit output power to 100 W.
“LMT” appears beside the transmit indicator during
transmit.
• Transmission inhibit
Deactivates the transmitter.
The transmit indicator is displayed in gray during
transmit.
Check the temperature
When the protector is activated, wait until the power
amplifier cools down using the transceiver in stand-by
or receive condition.
NOTE: DO NOT turn the transceiver power OFF.
The internal cooling fan does not function, so it will
take longer to cool the transceiver.
The power amplifier temperature can be monitored in
the multi-function meter, TEMP gauge.
■ Screen saver function
The IC-7800 has a screen saver function to protect the
LCD from the “burn-in” effect.
[F-1•Y] [F-2•ACC]/[F-2•Z]
[F-5•PREVIEW]
[EXIT/SET] Main dial
[F-7•SET][F-3•DISP]
q Push [EXIT/SET] several times to close a multi-func-
tion screen, if necessary.
wPush[F-7•SET]toselectsetmodemenuscreen.
ePush[F-3•DISP]toenterdisplaysetmode.
rPush[F-1•Y]/[F-2•Z] several times to select the
“Screen Saver Function” item.
t Rotate main dial to select the desired time period
for the screen saver activation from 15, 30, 60 min.
and OFF.
 •Deactivatethescreensaverwith“OFF”selection.
yPush[F-2•Z] to select the “Screen Saver Type”
item.
u Rotate main dial to select the screen saver type
from “Bound,” “Rotation” and “Twist.”
 •Holddown[F-5•PREVIEW]todisplaytheindicationfor
your reference.
i Push [EXIT/SET] twice to exit set mode.
NOTE: When the screen saver function is acti-
vated, the LCD backlight brightness is set to a min-
imum level. Also, the indicator blinks on the [MAIN]
or [SUB] switch, whichever one was selected at the
time.
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MAINTENANCE