KX-NS5170XSX, KX-NS5170X-SX - Panasonic PBX Service Manual (repair manual). Page 25

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25
KX-NS5170X/KX-NS5170SX
OK
Replace the IC404.
Caller ID is not detected
by optional equipment. 
Check soldering of terminal of IC404. 
Check soldering of 
terminal of IC200A.
all ports
Does this 
occur in a specific 
ports or all 
ports?
NG
Does The bell 
of SLT  ring ?
specific ports
NG
Resolder the defective parts.
Go to the flowchart 
"The bell of SLTdoes not ringl".
Resolder the defective parts. 
NG
OK
Replace the IC200A.
OK
END
OK
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