Panasonic KX-TG5431BXS Service Manual page 110

KX-TG5431BXS / KX-TGA542BXS
35 SCHEMATIC DIAGRAM (BASE UNIT_MAIN)
IC609
NC
NC SO
17 16
NC SI
18 15
NC SCK
19 14
NC CS
20 13
NC NC
21 12
NC NC
22 11
NC NC
23 10
NC NC
24 9
NC GND
25 8
NC VCC
26 7
NC NC
27 6
NC NC
28 5
NC NC
29 4
NC WP
30 3
NC RESET
31 2
NC RDY
32 1
IC601
FSO
FLASH_4M
15 14
NC SO
16 13
NC SI
17 12
NC BCLK
18 11
NC CS
19 10
NC NC
20 9
NC NC
21 8
NC NC
22 7
NC GND
23 6
NC VCC
24 5
NC NC
25 4
NC NC
26 3
NC WP
27 2
NC RESET
28 1
NC RDY
R601 NC
RDY
26.6ms
Power ON
RA500
(Reset)
1
3
5
7
100K
C611 NC
NC
IC611
1 8
A0 VCC
2 7
A1 WP
3
6
A2 SCL
4
5
VSS SDA
C612 NC
NC: No Components
CON_EN
CON_EN
V_RF
(VPA)
V_RF
V_RF
RADIO_EN
RADIO_EN
PA_CONT
PA_CONT
SYN_LE2
SYN_LE2
SYN_OUT
SYN_OUT
SYN_DATA
SYN_DATA
SYN_CLK
SYN_CLK
SYN_LE1
SYN_LE1
TX_DATA
TX_DATA
RX_GAIN
RX_GAIN
RX_EN
RX_EN
TX_EN
TX_EN
SHCTRL
SHCTRL
RX_DATA
RX_DATA
RF_RESET
RF_RESET
RSSI
RSSI
OSC_IN
OSC_IN
ANT0 ANT0
ANT0
FSI FCS
FCLK ANT1
GND
GND
R536
2.2K
FRST
Q535
RA501
8 7
6 5
4 3
2 1
4.7K
UTX
URX
DVCC
81
82 SEG10
83 SEG9
84 SEG8
85 SEG7
86 SEG6
87 SEG5
88 SEG4
2
89 SEG3
4
90 COM2
6
91 COM1
8
92 UART_TX
93 UARTRX
INT0
94 INT0
95 NC
96 GND
97 VCC
98 SP_LED
99 FL_CLK
INT1
100 INT1
C503 K0.1
R592 NC
R594 NC
R593 NC
R521 C521
R523 39K
1.8K C3P
Q521
VCC
R535 1K
RST
RXI
BCK
TXO
X501
13.824MHz
R509 NC
50
VCCPLL
SEG11
GNDPLL 49
48
VCCR
RSSI 47
VREFR 46
45
TXMOD
GNDR 44
43
MIP
MIN 42
41
VREF
IC501
HSMIN 40
39
HSMIP
GNDA 38
VCCA 37
36
LIN0
DCIN 35
34
LOUT0
HSSP 33
32
VCCPA
SPN 31
C505 NC
KIN1
KIN2
TAM
CDL
KIN5
KIN6
GND
R684 NC
R685 NC
R686 NC
R687 NC
S661 NC 3
4 2
1
to Operational P. C. B.
110
3.3V
Measure the SP voltage of the Handset
soon after the power is turned ON.
INTERCOM
PQLT3E3A-M
to Handset RX
-43dBm/600Ω
IN 19mVp-p
RSSI
Analog
VCCA 3.3V (DSP,MIC)
R459 C457
2.2K K0.022
R460 C458
R517 NC C517 K0.1
2.2K K0.022
C518 10uF
C513 K0.1
C514 NC C516 10u/6.3V
C515 K1.0
C120
K5600P
TX 940mVp-p
SP VCCPA 3.3V
R474 L472
INTERCOM
1 6.8u
SP PAD SP
from Handset TX
R473 L471
240mVp-p 8Ω
1 6.8u
(Vol. MAX)
(1)
VCC 3.3V
(2)
(3)
(4)
(5)
MIC
MIP
MIN
(6)
R178 1K
(7)
R134 1K
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)