Check Record; Check Playback - Panasonic KX-TGC450G Service Manual

9.1.2 Check Record
9.1.2.1 Base Unit
A) 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:
[4.6 Signal Route]
[4.3.5 Telephone Line Interface]
Note:
Flash Memory is IC601.
BBIC is IC501.
9.1.3 Check Playback
9.1.3.1 Base Unit
Check VDDC (1.2 V): Test Point [VDDC]
Check output of BBIC (Pin 29, 31).
Check Speaker and its surroundings.
Cross Reference:
[4.3.4 Power Supply Circuit/Reset Circuit]
Note:
Flash Memory is IC601.
BBIC is IC501.
(*1) Refer to [14.1 Base Unit (Main)]
OK
YES
OK
OK
OK
OK
OK
NO
Check Telephone Line Interface
[Bell].
NO
Check Telephone Line Interface
[OFF HOOK].
NO
Check ICM Recording in Signal Route.
NO
Check Power Supply Circuit.
NO
Check BBIC and Flash Memory.
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