Panasonic KX-FT937LA-B Service Manual page 150

KX-FT937LA-B
4M FLASH
FOR VOICE
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[10]
A[11]
A[12]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
SPMUTE
MDMCS
XTEST
(13)
(14)
BLEEDER_ON
(15)
PWRCNT
HSRXEN
TONE2EN
TONE1EN
(16)
(17)
R178 1K
(18)
(19)
(20)
(21)
(22)
(23)
+5V TO +2V
+2V +2V
DG
(24)
IC6
NC
20 21 D[0]
A0 D0
D[1]
19 22
A1 D1
D[2]
18 23
A2 D2
D[3]
17 25
A3 D3
D[4]
16 26
A4 D4
D[5]
15 27
A5 D5
D[6]
14 28
A6 D6
13 29 D[7]
A7 D7
3
A8
2
A9
31
A10
1
+3.3VD
A11
12
7
A12 WE
4 8
A13 VDD
5 24
A14 VSS
11
A15
10
A16
6
A17
30
CE
32 9
OE A18
DG
DG
Q16
D[7]
D[6]
MDMCS
D[0]
D[5]
D[1]
D[4]
D[2]
D[3]
+3.3VD
R200
MDMRST
0
+3.3VD
D[0]
D[1]
TEST
D[2]
D[3]
R162 1M
D[4]
X2 D[5]
BR3
HOOK D[6]
24.00MHz
D[7]
DG
R159 R160
120K 0
DG DG
SPMUTE
CIS BLOCK
+3.3VD
+5VA
+5V
NC C93
DG
CN8
DG
FAX TX signal
FAX RX signal
C114 L12
K0.1u
IC9
V+
1 8
2 7
C112 DG A B
R131
3 6
+2V
3.3K
K0.033u L9
C113 R123
V-
4 5
100K
K0.01u
0
L10 +2V
0
DG
C118 K0.1u
C119 NC
( )
+5VA
C124
R118
( ) ( )
NC NC
C120
R115
R113
R114
( )
( ) ( )
( ) ( )
NC
NC NC NC
Q17
DG
DG DG
+3.3VD
R201
A[5]
( )
81 SPRn
A[4]
82 A4
A[3]
83 A3
A[2]
84 A2
A[1]
85 A1
A[0]
86 A0
87 VDDo87
88 VSSo88
89 VSS89
C203
90 VDD90
DG Z1u
91 D0
92 D1
93 D2
94 D3
95 D4
96 D5
97 D6
98 D7
99 RESETn
100 IRQn
+3.3VD
DG
C206
Z0.1u
DG
XCLK/EYEXY EYESYNC
EYE PATTERN MONITOR
TEST PAD
R140
C140 K0.1u 15K
DG
DG
KX-FT937LA-B : DIGITAL BOARD SCHEMATIC DIAGRAM
150
+5VA
RA7
10K
MDMTXEN
TONE1EN
C94
Z0.1u
IC10
+5VA
1 14
VDD
TELRXEN
2 13
HSRXEN
3 12
0
4 11
5 10
6 9
7 8
VSS
DG
DG
R130 24K
DG
Q18
DG
C238 Z1u
X3
32.256MHz
DG
K0.1u R222
C222
C220
( )
50
C219
49
48
C217
47
IA1_HSMICM
46 L19
IA1_HSMICP
( )
RESERVED45 45
IA_RXM NC
RESERVED44 44
IA_RXP
NC
RESERVED43 43 C242
IA_AVSS46
( )
IC5 RESERVED42 42
RESERVED41 41 C243 NC
L20
( )
IA_AVSS40 40
( )
RESERVED34 RESERVED39 39
NC
RESERVED33 RESERVED38 38
RESERVED32 RESERVED37 37
RESERVED31 RESERVED36 36
RESERVED35 35
34
33
32
31
DG
EYECLK R214
2.7K
C207
K1000p
DG
+5V
R142 10K
TO SPEAKER
IC12
CN9
1 8
CD VO2 1
SP+
2 7
FC2 GND 2 SP-
3 6
FC1 VCC
4 5
VIN VO1
C143 K1000p
R141 9.1K
+5VA
+24LV
+24LV
TO ANALOG
CN2
+5VA
1 +24V
2 DG
DG
3 +5V
DG
PAPER
4 PAPER
R35 1K
5 LINETX
+5VA
6 TONE1
+5VA
RLY
7 RLY
CPC
8 CPC
R37
JAM
9 JAM
+5VA
1K
PSHORT
10 P_SHORT
BELL
11 BELL/DCN
R39
HOOK
12 HOOK
1K
13 LINERX
14 MONRX
HSTXMUTE
DG DG
15 H/STX_MUTE
C128
16 H/SRX
K0.1u
+5V
TO FLASH
PROGRAMMER
CN10
1 +5V+
BELL
DG
2 TXD
TELRXEN
3 RXD
PSHORT
4 RTS
MDMTXEN
5 CTS
HSTXMUTE
6 DSR
ACK_EN
7 DTR
8 GND
DG
DG
C221
R223
3.9K
0
K0.22u
DG
NC
DG
K0.1u
R221
DG
R220 4.7K C216
K0.1u
0
K0.22u
+3.3VD
DG TAM MODEL ONLY
DG DG
DG