Schematic Diagram (Base Unit_Main) - Panasonic KX-TG6500BXB Service Manual

4.5V CONVERTOR
Q300
(1)
L300
22uH
IC300
1
CE VIN
2
GND
3
VOUT EXT
DCDC_IC
(2)
(3)
RX -25.5dBm
(4)
60mVp-p
C173
R172 100K
R175 560
C172
K2700P(50V)
Q171
C174
NC
Line1 TX
-14dBm (230mVp-p)
(5)
RCV_L1
SEND_L1
(6)
DCIN_L1
(7)
CIDP_L1
(8)
CIDN_L1
(9)
RX -24dBm
70mVp-p
C273
R272 150K
R275 560
C272
K2700P(50V)
Q271
C274
NC
RX -34dBm
26mVp-p
A
RCV_L2
(10)
T281
SEND_L2 3E3A 4
3
(11)
2
1 6
(12) NC
(13)
(14)
C289
(15)
(16)
(17)
(18)
DCIN_L2
(19)
(20)
R223
R224
C225
CIDP_L2
(21)
C226
CIDN_L2
(22)
(23)
C292
K6800P
1
2
R293 47K
3
4
C297
R296 270K
(24)
K6800P C296 K680P
Note:
(*1) Refer to Microphone Input Level (Base Unit) (P.140).
(*2) Use the point LINE_GND as ground, when you measure the signal level at A, B, C and D points.
R365 1K
R364 10K
Q362
5
R375 560
4
Q372
Q373
AC_DOWN
TX -15dBm (200mVp-p)
NC
Q161
C167 R167 R164 47 R162 39K
K0.22
1K
C163
K4700P(50V)
RX -42dBm
9mVp-p
R183 2.2K C185 K0.018 R185
33K
C183 NC
-30dBm
37mVp-p
R158
100K
Q156
R123 270K
R124 270K
C125 K2700P C123 K1500P
C126 K2700P C124 K1500P
D TX -15dBm (200mVp-p)
NC
Q261
R264 47 R262 39K
C263
K4700P(50V)
T261
3E3A 4 C
3
RX -40dBm
2
13mVp-p
1 6
-22dBm
LINE_GND
R283
93mVp-p 2.7K C285 K0.047 R285
6.8K
B
C283
NC
NC
NC
NC
C223 NC
NC
C224 NC
R292 R291
1
47K 68K
8 2
VCC
1
7
2 3
+ - - +
6
5 3
GND
IC291
R219
10K
R361 3.3K D362
Q361
CHARGE PAD
CP CHARGE+
C371 L371
CM CHRGE-
6.8uH
K0.1
Q371 Q340
R374 100
R342 47K
Q141
C141 NC
R141 100K
1 4
PC141
2
3
R144
100K
Q142
Q145
C151
NC
R151 NC
IC151
R157 R154 47K
1 8
VCC
R155 27K
3.9K
2 7
+ - - +
3 6
4 5
GND
R137 10K
Q136
R121 2.2M C121 J120P
R122 2.2M C122 J120P
R199 C198
Q241
C241 NC
R241 100K
1 4
PC241
2 3
GND (*2)
Q245
-30dBm
LINE_GND
37mVp-p
R251 NC
IC251
R258 R257 R254 47K
1 8
VCC
R255 27K
3.9K
100K 2 7
+ - - +
3 6
4 5
GND
Q256
R237 10K
Q236
R221 NC C221
R222 NC C222
R213 2.2M C213
R214 2.2M C214
KX-TG6500BXB SCHEMATIC DIAGRAM (Base Unit_Main)
143
KX-TG6500BXB / KX-TGA650BXB
DA113
R113
C113
C114 R114
11~13V
CN301
DCP
DC JACK
D301
1 DC+
2 DC-
DCM
R196
C196
C101
680P(3216)
D101
L101 33uH
3
2
4
1
P101
L102 33uH
C102
22
680P(3216)
PC111
1 4
2 3
C197
C202
680P(3216)
D201
L202 33uH
3 2
4 1
L201 33uH
C201
680P(3216)
PC211
C251 NC
1 4
2 3
NC
NC
J100P
J100P
NC: No Components
DA114
NC
NC
R115
R117
R118
Line1 RX Input
-25dBm
(63mVp-p)
Line1 TX Output
-15.5dBm
(190mVp-p)
CN101
L1T
TEL JACK 1
1 L2R
2 L1T
3 L1R
4 L2T
L1R
L2R
P201
CN201
TEL JACK 2
22
2 L2R
1 L2T
L2T
Line2 RX Input
-25dBm
(63mVp-p)
Line2 TX Output
-15.5dBm
(190mVp-p)