Panasonic KX-T336 System Reference Manual page 462

Testing sequence after dialing "90" is given below by using an example of PITS model
KX-T7130.
In LED test, " mV means the light off, y II" means the light on, "te "
means flashing.
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1) Testing the DN button indicators and the INTERCOM
button indicator for lighting in green.
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000000
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CClOClOol
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INTERCOM
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button
a
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DN buttons 1
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2) Testing
the DN button indicators and the ICM button
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indicator for flashing in green.
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1
INTERCOM
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button
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1 I
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m}
,3l3lnma ua
J 000 =
u
: '_ I
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DN
buttons
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