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KX-TG8162ALB/KX-TG8163ALB/KX-TGA815AZB
9.1.10. Bell Reception
9.1.10.1. Base Unit
9.1.10.2. Handset
Cross Reference:
How to Check the Handset Speaker or Receiver
9.1.11. Check TAM Operation
Cross Reference:
Note:
(*1) When replacing FLASH MEMORY (IC601), TAM data need to be written to it. Refer to
Base Unit
When bell signal is coming, is there bell sound
signal at BBIC (IC501: 5)?
NO
Check around IC501 (30), C476, C477, C478,
C479, D472, D473, L474, L476, SPp, SPn
and SPEAKER.
YES
Check around C110, C111, C112, C113, C114,
R111, R112, R113, R114, D113, Q111, P101.
NO
When bell signal is coming, is there bell sound
signal at IC501 (31, 29)?
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC1: 34, 36)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
YES
Check BBIC (IC1), C78, C79, C73, C72, D13,
D14, R77, R76.
NO
Check cable of SPEAKER and resistance value
of SPEAKER.
Check IC601 and BBIC (IC501) of Base Unit. (*1)
Is there a TAM icon on the Handset display?
Turn on the Answering System.
Check
Power
S
upply Circuit
.
NO
NO
YES
Is the voltage of VBAT of Base Unit about 3.0 V
and +3.0V about 3.0 V?
YES