Schematic Diagram; Digital Board - Panasonic KX-FT937LA-B Service Manual

17 Schematic Diagram

17.1. Digital Board

MOTOR BLOCK
+24V
M
R1
F1 1.25A
Q1
BR4
+5V
D501
D502 BR1
CN3
COM 1
RM3 2
RM2 3
RM1 4
RM0 5
+24LV
THERMAL HEAD
BLOCK
Q7
8 1
7 2
6 3
5 4
+24VF +24VF
PG
Q4
PG
CN4
COM 1
R13 100
LATCH 2
R14 100
STB1 3
C12 +3.3VD
GND 4
Z0.1u
+3.3V 5
TM 6
L21
R15 100
CLOCK 7
GND 8
R16 100
STB2 9
R17 100
DATA 10
COM 11
+5V
MOTOR POSITION
SENSOR
CN5
R31 1K
2
1
DG
+5V
CUTTER POSITION
SENSOR
CN6
R32 1K
2
1
DG
OPE-PANEL BLOCK
+24LV
CN206
F2
MIC 1
+5V
+5V 2
DG 3
R51 270
KSTART 4
R52 270
KLATCH 5
R53 100
KRXD 6
R54 100
KTXD 7
R55 100
KSCLK 8
R56 100
OPERST 9
NC 10
DG
TO POWER
+5V
SUPPLY
Q9
CN1
[0]
PCONT 9
DG
+6V +6V
+6V 8
+6V 7
+6V TO +5V REG
GND 6
DG
GND 5
GND 4
DG
PG +24V
+24V 3
+24V 2
+24V 1
DG
820 R2
1.5K 1/2W
RXE
Q2
IC7
DG
[0]
20V
GND
9 8
10 7
RM3
11 6
RM2
12 5
RM1
13 4
RM0
14 3
BLEEDER_ON
15 2 PG
16 1
PG
+24V
DG
Q6
Q5
HEADON
+2.5VD
THLAT
STB1
THCLK
STB2
THDAT
DG
MOT_POS
MOT_POS
CUT_POS
DG
ACK_EN
CISON
RLY
CUT_POS
KSTART
KLATCH
KSCLK
KTXD
KRXD
DG OPRESET
+24V
+24V
+5V
0.25A
KSTART
KLATCH
KRXD
KTXD
KSCLK
OPRESET
H/L
DG
PWRCNT
+5V +5V +5VA
R70 0
+3.3VD +3.3VD
DG DG
+5V
+5V TO +3.3VD REG
IC15 IC3
+5V
VOUT
1 5
VDD CE
VIN
2 3
VSS
2
GND
1
3 4
VOUT VDET
RESET
DG
DG DG
4M DRAM
IC4
A[4] D[0]
10 2
A0 DQ1
A[5] D[1]
11 3
A1 DQ2
A[6] D[2]
12 4
A2 DQ3
A0
A[7] D[3]
13 5
A3 DQ4
A1
RBA[0] D[4]
16 24
A4 DQ5
A2
RBA[1] 17 25 D[5]
A5 DQ6 A3
RBA[2] D[6]
18 26
A6 DQ7 A4
RBA[3] D[7]
19 27
A7 DQ8 A5
RBA[4]
20
A8
A6
RBA[5]
9
A9R
A7
+3.3VD
A8
6
NC6
+3.3VD A9
21
14
NC21 VCC-14 A10
1
VCC-1 A11
7
WE A12
22
OE
A13
8
15
RAS VSS-15
A14
23
28
CAS VSS-28
A15
A16
DG
A17
A18
DG
RXE
TH-TMP
XRESET
+3.3VD +2.5VD
C179
Z0.1u
STB1
STB2
+5V
C151
C153 109 VSS
Z0.1u
110 VDD3.3V
Z0.1u
111 XDRESET
112 VDD5.0V
113 VSS
XWDERR
114 XRESETI
R151 4.7K
XWDERR
115
THDAT
116 THDAT
THCLK
117 THCLK
THLAT
118 THLAT
119 STBNP
RM0
120 RM0/IOP00
RM1
121 RM1/IOP01
RM2
RM2/IOP02
122
RM3
123 RM3/IOP03
RXE
124 RXE/IP04
125 TM0/IOP10
126 VDD2.5V
C154
127 VSS
Z0.1u
128 TM1/IOP11
TM2/IOP12
129
130 TM3/IOP13
131 TXE/IP14
132 KSTART
133 KLATCH
134 KSCLK
135 KTXD
KRXD
136
137 FMEMCLK/IOP24
138 FMEMDI/IOP25
R152 22K
139 ADSEL1
C155 Z0.1u Z0.1u
140 VDDA2.5V
C156
141 VREFB
C157
142 VCL
+3.3VD
Z0.1u
143 VREFT
DG
VSSA
144
+3.3VA
AIN2
DG
DG
C161
K0.1u
+3.3V/BATIN
DG
+3.3VD TO +2.5V
+2.5VD
+2.5VD
Q10
+3.3VD
DG
DG
149
4M FLASH
FOR PROGRAM
IC2
A[0] A[0] D[0]
20 21
A0 D0
A[1] A[1] D[1]
19 22
A1 D1
A[2] A[2] D[2] D[0]
18 23 D0
A2 D2
A[3] A[3] D[3] D[1]
17 25 D1
A3 D3
A[4] A[4] D[4] D[2]
16 26 D2
A4 D4
A[5] A[5] D[5] D[3]
15 27 D3
A5 D5
A A[6] 14 28 D[6] D[4] D4
A6 D6
A[7] A[7] D[7] D[5]
13 29 D5
A7 D7
A[8] A[8] D
3 D6
A8
A[9] A[9] D
2 D7
A9
A[10] A[10]
31 +3.3VD
A10
A[11] A[11]
1
A11
A[12] A[12] 12
7
A12 WE
RBA[0] RBA[0]
4 8
A13 VDD
RBA[1]
RBA[1] 5 24
A14 VSS
RBA[2] RBA[2]
11
A15
RBA[3] RBA[3]
10
A16
RBA[4] RBA[4]
6
A17
RBA[5]
30
CE
32 9
OE A18
RBA[5]
RD WR
DG
+3.3VD
CE1 CE2
R102 10K
J2
+3.3VD
ROMCSMFCS
IC11
1 INB 5
VCC
2
INA
3 4
GND
OUT
C105 Z0.1u
DG
RBA6
VSS 72
VDD3.3V 71
DB5 70
DB1 69
DB4 68
DB2 67
DB3 66
XRESCS2/OP71 65
XCAS2/IOP44 64
10
XCAS1/IOP43 63
10
XRAS/IOP42 62
100
XMDMCS 61
XMDMINT 60
TEST4 59
TEST3 58
IC1
TEST2 57
TEST1 56
XTEST 55
VDD3.3V 54
VSS 53
XIN 52
XOUT 51
VDD2.5V 50
ADR13/OP 49
ADR14/OP 48
ADR15/OP 47
XDPRBE/MUX/OP53 46
XHSTWR/IOP41 45
MICLK/IOP46 XHSTRD/IOP40 44
100
MIDAT/IOP45
XWAIT/IOP60 43
VDD3.3V
20KOSC/IOP56 42
MILAT/IOP47 41
40
39
FMEND0/IOP26
38
VSS 37
C168
K1000p
XNMI
AMON
X1
BR2
2 1
R156
( )
A B
NC
DG
FTG
+3.3V/BATIN TO
+2.5V/BATIN
+2.5V/BATIN
+3.3V/BATIN +3.3V/BATIN
+2.5V/BATIN
R77
( )
NC
DG DG DG
KX-FT937LA-B
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
C176
Z0.1u
(12)
R167
R166
R165
(13)
C175
Z0.1u
(14)
ADR13
ADR14
ADR15
R161
(15)
C171
Z0.1u
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)