Main Board (3) - Panasonic KX-MB2085CXW Service Manual

KX-MB2085CXW/KX-MB2090CXW

16.3.3. Main Board (3)

1
A
DG
+5VA
S5V
R258
10(1608)
8
VCC
L213
IC201
GND
4
0(1608)
DG
+2.5V
B
DG DG
+24V
+24VA
R257
10(1608)
8
VCC
L212
IC202
GND
4
0(1608)
DG
+12V
C
DG DG
C256 K0.01u
C209 K0.01u
R273
R222
( )
9.1k
NC
C251 C244
( )
NC
K0.033u(1608)
D
1:1B;4D
AFECLK
25
VPD2
26
N/C
27
TYPE
28
SckMode
1:1A
29
ATXD SDIN
30
GPIO6
E 31
GPIO7
1:1A R275
32
ARXD SDOUT
22
33
DG
1:1A
DG
ASPCLK
1:1A
ABITCLK
1:1B
AFERST
F
2
R117
150(1W)
T100 C113
4 3
( )
NC
2
R123 220(1W)
6 1
R112
( )
(
NC
Q101
NC
C241 K330p
R230 82k
R224 82k
IC201
2
R207 82k
1
+2.5V
3
R240 82k
C243 K330p
C212 J100p
R216
R223 R204 68k R236
180k
0
4.3k
C216
NC
C230
( )
K2200p
IC202
DG
6
7
5
Q206
1:1E
F_MUTE
+3.3V
DG
IC200
DG
C286 K0.1u
DG
16
VNA
15
RXAP
14
RXAN
C235
13
VREF
GND
K0.1u
12
TXAP
11
TXAN
10
VPA
9
*RST
DG
R218
L215
0 22
DG
HS Tx
HS Rx
FAX Tx
DG
FAX Rx
Monitor Rx
Tone
Monitor Rx
3
R126
( )
NC
S5V
PC101
NC
4 1
D104
3 2
( )
)
NC
C
1:1E
( )
B
E
Q204
NC
DG
+3.3V
1:1E
ALC
Q208
( )
NC
DG
DG
R288
K0.1u
C282
K0.22u
Q210 Q211
1:1D R295 47k R296
FAX_RX
47k
R237 C232
12k K0.1u (1608)
+12V
C207 R247
K0.1u 2.2k
TP_RX
DG
1:1A
BTXD
R285
DG
22
1:1A DG
BRXD
+3.3V
DG
BSPCLK
BBITCLK
HS Rx
FAX Rx
Monitor Rx
Hs Rx
214
4
P_SHORT
C114
R124
( ) (
NC
J112
(
J104
J108
R110 NC
( )
W5NL5T
( )
NC
C106
BREAK
S5V
0
+5VA
C278
C281
R290
22k K0.1u
Q209
1:1D
DG
CID_RX
1:1B;1E
AFECLK
IC203
DG
C287 K0.1u
25 16
VPD2 VNA
26 15
N/C RXAP
27 14
TYPE RXAN
C270
28 13
SckMode VREF
GND
K0.1u
29 12
SDIN TXAP
30 11
GPIO6 TXAN
31 10
GPIO7 VPA
32 9
SDOUT *RST
33
DG
1:1A
1:1A R286
L216
0 22
HS Tx
CID
FAX Tx
Tone
Ringing
Alarm
Hs Tx
Beep
Key tones
KX-MB2090CXW MAIN BOARD (No.3) (1/2)
1/2 2/4
(1)
3
-1
(2)
(3)
NC
) (4)
)
NC
(5)
1:1E
(6)
(7)
(8)
(9)
(10)
DG