Read Panasonic KX-TCD775RUS Service Manual online
BLOCK DIAGRAM
8 CIRCUIT OPERATION (HANDSET)
CPU
IC1
A/D
D/A
Analog
Front
End
Speech Encoding
Speech Decoding
Burst Encoding
Burst Decoding
DSP
ADPCM
Codec
Filter
BMC
RF
Interface
Interface
SPEAKER
MIC
EEPROM
IC2
SDA
SCL
64
65
5
6
SYRI
RSSI
SYEN
RXDA
TXDA
14
10
46
21
11
RF
Section
Section
ANT
BATTERY
TERMINAL
J1
J2
CHARGE
CIRCUIT
CHARGE
CHARGE DETECT
SWITCHED
SUPPLY
CHARGE
CONTACTS
CONTACTS
J3
J4
2.4V
Reg.
3.6V
VDDBAT
SENSE
SWITCH
SWITCH
31
29
XTAL
10.368
MHz
KEYPAD
COLUMNS
ROWS
LCD
7 Seg
Display
7 Seg
Display
ON SWITCH
36
25
24
34
26
24
KX-TCD775RUS BLOCK DIAGRAM (HANDSET)
J7
67
63
63
50
86
DL1/INH/RS
CS/CE
DISCLK
DISDATA
Flash
PROM
IC3
PROM
IC3
30
85
ADDRESS
DATA
A0..
A17
A17
D0..
D7
D7
69
SP_AMP
J6
Headset
EARPIECE
AMPLIFIER
39
43
40
RX-AF
47
TX-AF
KEYPAD LED'S
78
79
RED BACKLIT
GREEN BACKLIT
Fig. 23
22
KX-TCD775RUS
Click on the first or last page to see other KX-TCD775RUS service manuals if exist.