Panasonic KX-MB283BR Service Manual page 207

15.2.4. MAIN BOARD (4)
1
A
1:2G;1:7B
RING
1:7B
DP
B
1:7C;2J
AFECLK
1:7C
ASPCLK
1:7B
ABITCLK
1:7B
ARXD
1:7B
ATXD
+3.3VA1
DG
1:7B;2J
AFERST
1:7C
AINT
C
D
1:2J;3:11B
DAOUT
1:7B
BTXD
1:7B
BRXD
1:7C
BSPCLK
1:7C;2D
AFECLK
E
1:7B
BBITCLK
1:7B;2E
AFERST
F
2
+3.3VA1
IC100
1 16
MCLK *OFHK +3.3VA1
2 15
*FSYNC *RGDT/FSD/M1
3 14
SCLK M0
4 13
VD VA
5 12
SDO GND
6 11
SDI AOUT/*INT
7 10
FC/*RGDT C1A
8 9
*RESET C2A
NC
DG
DG
+5VD +5VA
L200
VREF
L230
NC
NC
L229
NC
DG DG2
DG
IC200
1
SPKRR
2
MBIAS
3
HDST
4
SDI
5
SDO
6
*FSYNC
7
MCLK
8
SCLK
NC
DG DG
DG
This circuit is not used in KX-MB283BR.
3
C104
R101 R136
NC NC
NC
C105
R102 R137
NC
NC
NC
C121
NC
C122
( )
NC
DG
+3.3VA1
+3.3V
L227
NC
+3.3VA2
+3.3V
L202
NC
+5VA
R209
NC
R205
NC
+3.3VA2
NC
R214
16
SPKRL
15
LINEO
14
GND
13
VA
DG DG
12
VD
11
LINEI
L203
10
MIC
NC
9
*RESET
C203 NC R210 NC
C205 NC R212 NC
+3.3VA2
C204 NC R211 NC
DG
Q200
C
1:5I
B
CNGMUTE
E
NC
DG
DG
KX-MB283BR SCHEMATIC DIAGRAM (MAIN BOARD No.04) (1/2)
207
4
IC101
1 16
QE DCT2
2 15
DCT IGND
3 14
RX DCT3
4 13
IB QB
5 12
C1B QE2
6 11
C2B SC
7 10
VREG VREG2
8 9
RNG1 RNG2
NC
R109
( )
NC
R106
R112
NC NC
C110 NC
R110
( )
NC
R107
R113
NC
NC
C109 NC
R219
1:2H
HSSPMUTE
NC
L208 C238
C216
NC
NC
NC
C217
IC201
NC
NC DG
DG
L212
NC
DG L209
C215 R218
NC
NC NC
C213 IC202
NC
1
V+
AOUT
R217
2
BOUT
A-IN
NC
3
B-IN
A+IN
C247
R253 L210 L211
4
B+IN
V-
NC NC NC
NC
NC
DG
C214
( )
NC
KX-MB283BR
5
1/2
4
-1
R114
(1)
NC
(2)
Q102
R111 C
B
E
NC
NC
(3)
(4)
(5)
(6)
(7)
(8)
(9)
R224 NC
(10)
IC203
(11)
1 8
CD VO2
(12)
2 7
FC2 GND
3 6
(13)
FC1 VCC
4 5 (14)
VIN VO1
NC
R223
NC
C221
NC
(15)
C222
( )
8
NC
R220
7
L213
NC
6 (16)
C218
NC
5
L214
NC
(17)
R221
NC
NC
C219
VREF
NC
L215
R222
NC NC
C220
NC