Panasonic VL-SV74BX, Service Manual

Page: 26 / 99

9.2.1 Defect of Communication Between the Main Monitor Station and Extension Monitor
YES
Can the video/voice
communication be made?
NO
YES
YES
YES
Are all parts on
Talk Signal Path (Transmitting)
of Extension Monitor
OK?
NO
Advance preparation:
Connect a non-defective Door
Station and the Extension Monitor
to the Main Monitor Station.
Communicate between tthe
Extension Monitor and the Door Station.
Replace the fault parts.
START
END
Are all parts on
Talk Signal Path (Receiving)
of Extension Monitor
OK?
NO
Replace the fault parts.
Are all parts on
Image Signal Parh
of Extension Monitor
OK?
NO
Replace the fault parts.
Replace the Main board.(*1)
Reference:
• Refer to [9.3 Signal Route] .
TALK Signal (Transmitting), TALK Signal (Receiving), Image Signal (Extension Monitor)
• (*1) [10.1.3 How to Remove the Main Board, Speaker and LCD [No.3]]
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