Panasonic KX-TG7622B Service Manual page 35

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 25 of BBIC.
Check Auto Disconnect Circuit.
Check Parallel Connection Detection
Circuit.
Check BBIC and Flash Memory.
Cross Reference:
Signal Route (P.25)
Telephone Line Interface (P.16)
Parallel Connection Detect Circuit/Auto Disconnect
Circuit (P.17)
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.
35
KX-TG7622B/KX-TG7623B/KX-TGA410B