Panasonic KX-TG8162ALB Service Manual page 73

R177 1k
(1)
(2)
TX AF
C120
RX AF
1000p
VCCA
+3.0V
VCCA
R501
10
VREF
C505
10u
MIN
22
VCCA
21
VREF
C506 1u
20
DCIN3/LIN1
19
DCIN2
18
DCIN1
17
DCIN0/LIN0
16
DOUBOUT
15
DOUBCAPP1
14
DOUBCAPP
C504 1u
13
DOUBCAPN
C521 1u
12
DOUBCAPN1
11
VBAT
10
COREOUT
9
10u
VDDC2
8
GPIO[26]
7
GPIO[25]
6
GPIO[24]
5
GPIO[23]
4
GPIO[22]
3
GPIO[21]
2
GPIO[20]
1
(3)
(4)
3.0 V
(5)
+3.0V
0.1u
C611
*IC611
1 8
E0 VCC
2 7
E1 *WC
3 6
E2 SCL
4 5
VSS SDA
LINE_DC
Q161
C165 NC
C163 NC
R161 100k
VDDC
BELL
CHARGE_DET
HS_SUPPLY_DET
+3.0V
VBG
L501
C502 C501 100n
0.1u
PULSE_MUTE
HOOK
BELL
LCD_BLT CAP_SW
15
*R659 100 KEYS_D
R658 100 KEYS_C
UTX
4 1
URX
3 2
RA504 68
+3.0V
CAP_CHG
*R911
3.3k
Q141
R141
100k
*Q140
*R149
680
*R145 2.2k
.
Caller ID
R121 390k C121 680p
R122 390k C122 680p
+3.0V
Bell signal
R114
68k
Q111
R703
*R905
Supply from HS
*Q704
*Q352
*R360
47k
*Q901
*Q902
*R903
1.5k
1.5k
*R917
Vcap
13
*R907
100k
*Q903
VBAT
*Q905
Backup CAP
Supply from PSTN
*R916
*Q910
10
*R908 0
16
680 390 390
*R912 *R913 *R914
*R909 NC
*C910
22u
KX-TG8161AL SCHEMATIC DIAGRAM (Base Unit (Main))
73
KX-TG8162ALB/KX-TG8163ALB/KX-TGA815AZB
C101
680p
D101
3 2
4 1
C102
680p
R115
DC Monitor
5.6M
R116
5.6M
Bell detection
C110 0.047u
R111
C111 0.047u
1M
C112 0.047u
R112
C114 0.047u
47k
1k
Charge Current
1k
+3.0V +3.0V
+5.5V *R701
NC
*Q904
*Q702
*R919
33k
*R920 NC
22k
Optional charge detector
3.0 V
VBAT
VBAT
3.0V
L301
22u
Q302
2/2
Loop Current
L1T
L2T
L1R
P101
L2R
GAP
Caller ID
+5.5V
+5.5V
!
F301 DCP
3A
DCM
CHG+
CHARGE+
CHARGE-
+5.5V
Q301
K A
4 3
S
2
D G
5 1
R303 4.7k
IC301
3.0V
10 9 8 7
11
6
12
ZA1
1 2 3 4 5
NC: No Components