Check Record - Panasonic KX-TG4771B Service Manual

10.1.2. Check Record

10.1.2.1. Base Unit
Not record Incoming Message
Check Bell signal.
Does the unit catch line?
Check Line In: Pin 16 of BBIC.
Check Auto Disconnect Circuit.
Check Parallel Connection Detection
Circuit.
Check BBIC and Flash Memory.
Cross Reference:
Signal Route (P.21)
Telephone Line Interface (P.13)
Parallel Connection Detect Circuit/Auto Disconnect
Circuit (P.13)
OK
YES
OK
OK
OK
NO
Check Telephone Line Interface
[Bell].
NO
Check Telephone Line Interface
[OFF HOOK].
NO
Check ICM Recording in Signal Route.
Note:
Flash Memory is IC601.
BBIC is IC501.
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KX-TG4771B/KX-TG4772B/KX-TG4773B/KX-TGA470B