Read Panasonic KX-T7730UA (serv.man3) Service Manual Supplement online
9
KX-T7730UA
1.4.
BLOCK DIAGRAM
Change from the Original Service Manual Section 8.
USD PRIVING
CIRCUIT
(Q105~108)
H
L
T
R
T2
POWER
REGULATOR
(IC7)
SIGNAL
TRANSMITTING
CIRCUIT(Q101)
SIGNAL
RECEIVING
CIRCUIT(Q102)
IC9
RESET IC
(IC2)
Vcc(5V)
POWER
REGULATOR
(IC11)
Vcc(3.3V)
CPU
(IC1)
X1
DRIVING
CIRCUIT
(Q103,Q104)
LED
LCD
KEY
LCD Module
RINGER
DTMF
SPEAKER
MIC
HEADSET
HANDSET
SP-PHONE
(IC3)
Handset Amp
(Q5,Q8)
Pre Amp
(Q4)
HYBRID
CIRCUIT
(Q3)
DIODE
BRIDGE
(D1)
DIODE
BRIDGE
(D2)
T1
KX-T7730U
A MAIN BO
ARD
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