Panasonic KX-MB2061CXB Service Manual page 312

KX-MB2061CXB/KX-MB2061CX2/KX-MB2062CXB
17.2.4. Main Board (4)
1
A
T100 3
4
6
DG
!
B
+24V
+24VA
10(1608)
L212
IC202
0
+12V
C
DG DG
D
R273
R222
(
9.1k NC
C244
C251
( )
NC 0.033u
+
1:3E
F_MUTE
1:4B
AFECLK
+3.3V
R279
0
E
+
DG
1:4A
ATXD
1:4B R275
ARXD
22
DG
1:4B
ASPCLK
1:4B
ABITCLK
1:4A
AFERST
F
2
J103
R117
390 (1W)
C113
( )
+
NC
2
R123
1
120
(1W)
4
Q101
NC
R112
D104
( ) 3
( ) ( )
NC NC
+
+5VD
+5VA
R258
R257
10(1608)
8
V+
V-
0 IC201
L213
4
+2.5V
DG
DG DG
C241 180p
C256 R230
R224 120k
5600p
82k
2
1
3
R207
C209 IC201
5600p 82k
DG
R240 120k
C243 180p
C231
) NC
C212 J82p
( )
R214
R223
R204 120k
R236
4.3k 0
C230
( )
C216 1.2n
IC202
DG
7
DG
25 VPD2 16
VNA
26 N/C 15
RXAP
27 TYPE 14
RXAN
28 SckMode 13 C235
VREF
GND
29 SDIN 12 K0.1u
TXAP
30 GPIO6
11
TXAN
31 GPIO7 10
VPA
32 SDOUT 9
IC200
*RST C268
+
( )
33
NC
DG
R218
R234
22
22
DG
KX-MB2061CX / KX-MB2062CX SCHEMATIC DIAGRAM (MAIN BOARD No.4) (1/2)
3
+5VD
PC101
NC
1
2
J104
C
B
( )
E Q202 D109 D107
NC
NC NC
DG
NC
R110
( )
C106
( )
NC
R264
8
(
VCC
GND
+
4
DG
DG
Q208
R278
( )
NC
NC
DG
P_SHORT
+2.5V
C205
R238
15k K0.1u
R237 C232
12k
K0.1u
200k
NC
+12V
6
5
Q206
DG
R247
C207
C249 NC
K0.1u 2.2k
( )
MODEM_TX R231 C223
18k
K0.1u
+3.3V
DG
DG
+
DG
312
4
J110
( )
NC
PC106
NC
Q100
4 1
NC
( )
D102
3 2
Q102
NC
NC
3
( )
DG
J109
( )
NC
+5VD
)
NC
ALC
RX
MONITOR C202
R245
0.022u
15k
Q205
LINERLY
TX
+2.5V DG
R248
560k
6
C253
5
100p
P_SHORT
DCN
CPC
ALC
CIDRLY
BREAK
BELL
LINERLY
RX
TX
HS RX, HS TX, DECT RX, DECT TX,
FAX RX, FAX TX
HS RX, MONITER RX, DECT RX
HS TX, DECT TX
FAX RX
FAX TX
CID
5
1/2
4
-1
(1)
(2)
D101
( )
NC
1
2
+ +
(3)
(4)
(5)
R235
560k
C239 100p
7
R277
5:1A
CID
0
IC201
DG
5:1E
P_SHORT
5:1E
DCN
5:1E
CPC
5:1E
ALC
5:1E
CIDRLY
5:1E
BREAK
5:1E
BELL
5:1E
LINERLY
5:1A
RX
5:1A
TX