Panasonic KX-TG6841B Service Manual page 69

+3.0V
(1)
(2)
(3)
(4)
+5.5V
X501
13.824M
R509 NC
(5)
(6)
(7)
(8)
(9)
(10)
IC501
GND
(11)
MODEL
R510 NC
R511 NC
(12)
+3.0V
C601 0.1u
IC601
16M FLASH
1 8
*CS VCC
2 7
DO/IO1 *HOLD/IO3
3 6
*WP/IO2 CLK
4 5
GND DI/IO0
+3.0V
R160
820
C173
R177 R164
R172 680k
1k
2.7k
0.1u
560p
C175
Q171
Rx
C458 0.033u
C457 0.033u
Caller ID
R121 390k C121 680p
R122 390k C122 680p
C459
C120
NC
1000p
C460
1000p
3.0V
C461
NC
+3.0V
+3.0V
VCCA
R501 10
VREF VCCA
C505 10u
22
MIN
C506
21
VCCA
20
1u
VREF
19
DCIN3/LIN1
18
DCIN2
17
DCIN1
16
DCIN0/LIN0
15
DOUBOUT
14
DOUBCAPP1
13
DOUBCAPP
C504 1u
12
DOUBCAPN
C521 1u
11
DOUBCAPN1
10
VBAT
C502 C501
9
COREOUT
10u 0.1u
8
VDDC2
7
GPIO[26]
6
GPIO[25]
5
GPIO[24]
4
GPIO[23]
3
GPIO[22]
2
GPIO[21]
1
GPIO[20]
VDDC
VDDC
+3.0V
C520
0.1u
1.2V
+3.0V
C611 0.1u
IC611
128K EEPROM
8
1
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
KX-TG6841/6842/6843/6844/6845/6873 SCHEMATIC DIAGRAM (Base Unit_Main)
KX-TG6841B/KX-TG6842B/KX-TG6843B/KX-TG6844B/KX-TG6845B/KX-TG6873B/KX-TGA680B
Q141
Q161
C
B
E
C163 NC
R161
100k
R151
Q142
100k
C
B
E
Tx
C184
1u
VDDC
HOOK
+3.0V
BELL
BELL
Q111
CHARGE_DET
L501
100n
LCD_RST
HOOK
LCD_CD
SPI2_CLK
SPI2_DO
LCD_CS
UTX
URX
GND
ZA1 NC
RA611
10 9 8 7
3.3k
11
6
12
1 2 3 4 5
GND
HAK_CL1
69
REFERENCE REFERENCE
1XX : TEL LINE 1XX : TEL LINE
3XX : POWER, CHARGE 3XX : POWER, CHARGE
4XX : MIC, SP 4XX : MIC, SP
5XX : BBIC 5XX : BBIC
6XX : FLASH, EEPROM, KEY, LCD 6XX : FLASH, EEPROM, KEY, LCD
7XX : FOR DK/BT 7XX : FOR DK/BT
8XX : RF 8XX : RF
R141
100k
C101 680p
D101
1 2
4 3
C102 680p
C115
NC
R115
NC
+5.5V +5.5V
F301
+3.0V
CHG+
R701
3.3k
Q701
Q702
5.5V
3.0V
VBAT
VBAT
IC302
2 3
OUT1 IN
4
OUT2
ADJ
1
CHG+
Q351
+5.5V
Q352
Q353
PNLB2155ZA-GW
PCB
RE1
NC: No Components
L1T
(YELLOW)
(GREEN)
L1R
22
P101
1
2
!
3.0A DCP
DCM
CHARGE+
CHARGE-
+5.5V