Panasonic KX-TGH262B - Record Function Troubleshooting; Base Unit Recording Issues Diagnosis

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KX-TGH260/KX-TGH262/KX-TGH263/KX-TGH264/KX-TGHA20/KX-TGA20
10.1.2. Check Record
10.1.2.1. Base Unit
Not record Incoming Message
Cross Reference:
Telephone Line Interface (P. 1 6)
Parallel Connection Detect Circuit/Auto Disconnect Circuit (P.1 7)
Note:
Flash Memory is IC601.
BBIC is IC501.
Check Bell signal.
OK
Check Telephone Line Interface
[Bell].
Does the unit catch line?
YES
Check Telephone Line Interface
[OFF HOOK].
Check Line In: Pin 25 of BBIC. Check ICM Recording in Signal Route.
NO
OK
Check Auto Disconnect Circuit.
OK
Check Parallel Connection Detection
Circuit.
OK
Check BBIC and Flash Memory.
NO
NO