5
KX-T7730CA
4 Technical Descriptions
4.1.
Block Diagram
USD PRIVING
CIRCUIT
(Q105~108)
H
L
T
R
T2
POWER
REGULATOR
(IC7)
SIGNAL
TRANSMITTING
CIRCUIT(Q101)
SIGNAL
RECEIVING
CIRCUIT(Q102)
FF
(IC2)
RESET IC
(IC9)
Vcc
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-T7730CA
MAIN BOARD
Summary of Contents for KX-T7730CA
Page 12: ...12 KX T7730CA ...
Page 13: ...13 KX T7730CA 5 Location of Controls and Components ...
Page 15: ...15 KX T7730CA 7 Troubleshooting Guide 7 1 No Operation ...
Page 16: ...16 KX T7730CA 7 2 Handset Trouble ...
Page 17: ...17 KX T7730CA 7 3 Speaker Phone Trouble 7 4 TONE Dial Trouble ...
Page 21: ...21 KX T7730CA 9 Miscellaneous 9 1 Terminal Guide of ICs Transistors and Diodes ...
Page 23: ...23 KX T7730CA 9 3 Memo ...
Page 30: ...30 KX T7730CA 13 2 Cabinet and Electrical Parts Location ...
Page 31: ...31 KX T7730CA 13 3 Accessories and Packing Materials ...