Panasonic KX-TG6641B Service Manual page 71

(1)
(2)
(3)
(4)
+5.5V
X501
13.824M
R509 NC
(5)
(6)
(7)
(8)
(9)
(10)
(11)
*IC501
GND
(12)
MODEL
*R510 NC
*R511 NC
(13)
+3.0V
*IC601
16M FLASH
1 *CS 8
VCC
2 DO/IO1 7
*HOLD/IO3
3 *WP/IO2 6
CLK
4 GND 5
DI/IO0
*C601 0.1u
+3.0V
R160
910
C165 NC
C173
R164
R172 100k
K0.22u 2.7k
C175 1000p
C
B
Q171
E
NC
C174
R181
C458 0.033u
NC
C457 0.033u
R121 390k C121
R122 390k C122
C459
C120
NC
1000p
C460
1000p
C461
NC
+3.0V
+3.0V
VCCA
R501 10
VREF
C50510u
22
MIN
C506
21
VCCA
20
1u
VREF
19
DCIN3/LIN1
18
DCIN2
17
DCIN1
16
DCIN0/LIN0
15
DOUBOUT
14
DOUBCAPP1
13
DOUBCAPP
12
C504 1u
DOUBCAPN
11
C521 1u
DOUBCAPN1
10
VBAT
9 C501
C502
COREOUT
8 10u 0.1u
VDDC2
7
GPIO[26]
6
GPIO[25]
5
GPIO[24]
4
GPIO[23]
3
GPIO[22]
2
GPIO[21]
1
VDDC 4 1
GPIO[20]
3 2
RA504 68
+3.0V
VDDC
1.2V
C520
0.1u
R602
0.1u
C611
NC
+5.5V
+3.0V +3.0V
IC611
IC602
64K EEPROM
NC
1 A0
5 B 1 VCC
VCC
2 A1
WP
2
3 A2
A Q601 SCL
4 3
4 VSS
GND SDA
Y
NC
KX-TG6641/6643/6644/6645 SCHEMATIC DIAGRAM (Base Unit_Main)
KX-TG6641B/KX-TG6643B/KX-TG6644B/KX-TG6645B/KX-TGA660B
Tx
Q161
C
B
E
C163 NC
R161
100k
R151
100k
C184
K1.0u
680p
680p
VDDC
HOOK
+3.0V
+3.0V
BELL
Q111
C
B
VBG
E
CHARGE_DET
Battery power supply from
Handset in power outage.
L501
100n
LCD_RST
HOOK
LCD_CD
SPI2_CLK
SPI2_DO
LCD_CS
UTX
VBAT
URX
+3.0V
Q362
C
PF_SUP B
E
+5.5V
R365
+3.0V
Q363
47k
8
7
6
5
GND
GND
71
Q141
REFERENCE
1XX : TEL LINE
3XX : POWER, CHARGE
4XX : MIC, SP
5XX : BBIC
R141
6XX : FLASH, EEPROM, KEY, LCD
7XX : FOR DK/BT
100k
8XX : RF
C101 680p
Q142
D101
C
L101
B
3 2
33u
E
Rx
4 1
C102 680p
L102
33u
C115
NC
R115
NC
Caller ID
Bell
+5.5V
+5.5V
+3.0V
R703
Q701
E
1k
R701
B
3.3k
C
Q702
C
B
E
VBAT
VBAT
IC302
2 OUT1 3
IN
4 OUT2
ADJ
1
CHG+
Q351
Q361
IC351
2.7V
1 2
VIN
VOUT
3
NC
VSS
4
ZA1 NC
10 9 8 7
HAK_CL1
11
6
12
1 2 3 4 5
NC: No Components
L1T
(YELLOW)
(GREEN)
L1R
P101 22
GAP
!
F301
3.0A DCP
DCM
CHG+
CHARGE+
CHARGE-
+5.5V
R351
3.9k