Read Panasonic KX-TG6551CAM / KX-TGA650RUM / KX-TGA651RUM Service Manual online
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KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM
9.1.10. Bell Reception
9.1.10.1. Base Unit
9.1.10.2. Handset
Cross Reference:
Telephone Line Interface (P.12)
Check Link (P.31)
How to Check the Handset Speaker or Receiver (P.63)
Check Link (P.31)
How to Check the Handset Speaker or Receiver (P.63)
When bell signal is coming, is there bell sound
signal at BBIC (IC501: 59)?
signal at BBIC (IC501: 59)?
Check around L474, L475.
NO
YES
Check around R111, R112, R113, R114, Q111,
D113, C111, C112,
D113, C111, C112,
NO
When bell signal is coming, is there bell sound
signal at IC501 (29, 31)?
signal at IC501 (29, 31)?
Does the bell sound from SPEAKER?
Check around SP+, SP- .
When bell signal coming, is there bell sound signal
at BBIC (IC1: 31, 29)?
at BBIC (IC1: 31, 29)?
NO
NO
YES
When bell signal coming, is there bell sound signal
at SP+, SP- ?
at SP+, SP- ?
YES
Check cable of SPEAKER and resistance value
of SPEAKER.
of SPEAKER.
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