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KX-F910BX
(3) Line Receiving Signal
The signal supplied from the line is input from pin 6 of CN501 through the analog board, and it is output from
pin 6 of the RF unit via IC502 pins 9, 11, 13, 15, 18, 20, 22 and 24 in this order.
CN501
C554
C555
(6pin)
L503
R564
R563
(4) RX Data Circuit
The AF output from the RF unit is amplified by Q503 and demodulated into a date signal by pins 35, 36, 5, 4,
and 3 of IC502. The result is then supplied to pin 73 of IC503 as the reception data signal.
C502
CN502
R511
(1pin)
AF
C503
(5) ID Code Setting
When the portable handset is placed on the cordless base unit, the charge detector operates and ID data is out
put from pin 30 of the IC501. After passing through data amplifier Q509 and the charge terminal, the data is sent
to the portable handset.
C533
R540
R561
C531
VR504
R562
C534
9
10
11
IC502
R514
C504
C505
R513
R512
R516
Q503
C501
VR501
R515
Circuit Diagram
R534
C529
R537
13
15
18
20
LIMIT
COMP
Circuit Diagram
C513 R524
C512
C511
R523
R525
36
35
IC502
|174 |
R535
C525
C524
C523
C521
R532
R533
21
22
24
LPF
R543
R544
C536
3
5
4
LPF
RF
VR503
MOD
R531
CN502
(6pin)
IC503
(73pin)
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