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KX-TS620BX1
8.1.3.
Check Playback
Is voltage at test point TP301 3.2V?
Is there output signal at test point TP902?
Is IC904 (1) input voltage high ?
Is there bell ringing signal at IC904 (5, 8)?
Check speaker and C925.
Cross Reference:
Power Supply Circuit (P.8)
8.1.4.
Check Record OGM/IGM
Greeting Message (OGM) not recorded
Is there any signal at BBIC (114), when MIC input
signal ?
Check BBIC and IC902.
Incoming Message (ICM) not recorded
Is the MESSAGE indicator (LED) on ?
( Input bell signal from LINE )
Is BBIC (63) become low when bell signal comes in?
Does the unit catch line after few ringings ?
Is there any signal at BBIC (102) when incoming
message is recorded ?
Check BBIC and IC902.
Cross Reference:
Signal Route (P.12)
Bell Detection Circuit (P.9)
On/Off Hook Circuit (P.9)
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
Check Power Supply Circuit.
NO
Check BBIC, IC902.
NO
Check IC905, BBIC.
NO
Check around R924, R925, C926~C930.
Note:
BBIC is IC901.
Flash Memory is IC902.
Check MIC, flat cable connection, R932,
NO
R934, C937.
Check OGM Record in Signal Route.
NO
Press ANSWER ON button.
YES
Is the MESSAGE LED on ?
Check LED802 at operation board.
NO
Check Bell Detection Circuit.
NO
Check On/Off Hook Circuit
NO
Check ICM recording in Signal Route.
Note:
BBIC is IC901.
Flash Memory is IC902
16
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