Panasonic KX-TG6641B Service Manual page 33

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.23)
Telephone Line Interface (P.14)
Parallel Connection Detect Circuit/Auto Disconnect
Circuit (P.15)
OK
YES
OK
OK
OK
KX-TG6641B/KX-TG6643B/KX-TG6644B/KX-TG6645B/KX-TGA660B
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.
33