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+24VF
+24V
+5VD
F501
0.25A
TO POWER UNIT
CN506
+5V
1
DG
2
PG
3
PG
4
+24V
5
THDAT
+24V
6
THCLK
+24V
7
THLAT
STB1
+24V
PG
STB2
+24V
CN510
+24V
1
DG
2
DG
+5VD
Not Used
TO THERMAL HEAD
R506
CN505
4.7k
COM(THON)
11
R507
THLAT
THLAT
10
0
R508
STB1
STB1
9
0
Q502
GND(PG)
8
+5V
7
PG
TM
6
R509
THCLK
THCLK
5
270
GND
4
R510
STB2
STB2
3
0
R511
THDAT
THDAT
2
0
COM(THON)
1
+24V
+5VD
F502
R503
1.25A
0
R512
Q503
820
R513
PG
1.5K(1/2W)
Q501
TO MOTOR
IC508
CN502
M3
M0
16
M3
1
M2
M1
15
M2
2
M1
M2
14
M1
3
M0
M3
13
M0
4
12
COM
5
11
10
D502
9
GND
C635
Z0.1u
TX0
PG
TX1
TX2
TX3
TXE
C505
( )
IC520
TO RS-232C D-SUB 25PIN
1 IN1
CN508
C506
2 C1
( )
FG
1
3 OUTA
L501
TXD
2
4 IN2
L502
OUTD
RXD
3
C507
5 C2
L503
( )
RTS
4
6 OUTB
L504
CTS
5
7 GND
L505
OUTC
DSR
6
GND
7
R504
-12V
DCD
8
1k
IC521
L506
DTR
9
1 VEE
L507
RI
10
2 INA1
IND1
FG
11
3 OUTA
IND2
R501
4 INB1
OUTD
5 INB2
INC1
6 OUTB
INC2
R502
7 GND
OUTC
DIGITAL BOARD SCHEMATIC DIAGRAM
KX-FM90CE-W /KX-FM90HG-W
+5VD +5VA
R520
10k
DG
C515
K1000p
....
....
IC506
1 S
8
D
2 S
7
D
3 S
6
D
4 G
5
D
THON
R514
22k
R515
82k
R522
C510
4.7k
J560p
C517
Z0.1u
C518
Z0.1u
L508
TXE
100
B
A
JOG1
JOG2
R527
TM0
L509
TM0
TM1
1
100
TM2
L510
TM1
2
TM3
100
TXE
L511
TM2
3
100
L512
TM3
4
100
5
6
C520
Z0.1u
7
C521
( )
C522
8
Z0.1u
C523
Z0.1u
PG
R517
100
XCTS
RXD
+5VD
14
VCC
13
IN4
12
C4
11
+24V
10
IN3
9
C3
8
XDSR
XRTS
TXD
+12V
+5VD
+12V
Q504
D504
14
VCC
DCD
13
D507
12
11
-12V
D505
10
XDTR
9
8
+5VD
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
C525
A[8]
Z0.1u
A[9]
A[10]
A[11]
RBA[0]
RBA[1]
RBA[2]
+5VD
+3.3V
XRESET
133 XORESET
134
VDD(5V)
135
VSS
136
XRESET1
R526
137
XWDERR
0
138
XRSTSWI
139
XRSTSWO
140
XRESETD
THON
141
IOP
STB1
142
STB1
STB2
STB2
143
144
VDD(3.3V)
145
VSS
146
STB3
147
STB4
BELL
148
STBNP
THDAT
149
THDAT
THCLK
150
THCLK
THLAT
THLAT
151
DCN
152
RM0/IOP
VOX
153
RM1/IOP
154
RM2/IOP
155
RM3/IOP
156
RXE/IOP
10k
157
TM0/IOP
C519
158
VDD(5V)
Z0.1u
159
VSS
32.768KHz
160
TM1/IOP
161
TM2/IOP
162
TM3/IOP
163
TXE/IOP
KSTART
164
KSTART
KLATCH
165
KLATCH
KSCLK
KSCLK
166
KTXD
167
KTXD
KRXD
168
KRXD
169
ADSEL1
170
VSSC
171
VDDC
172
VSSA
173
VDDA
VREFB
174
175
VCL
176
VREFT
C528
AMON
K0.1u
+5V/BATT
+3.3V/BATT
X501
32.768KHz
R532
( )
C533
Z0.1u
Q505
R530
3.9k
Q506
CN504
IC504
+3.3V/BATT +3.3V
10 A0
11
D[0]
D0
9 A1
12
D[1]
D1
8 A2
13
D[2]
D2
7 A3
15
D[3]
D3
6 A4
16
D[4]
D4
5 A5
17
D[5]
+5V/BATT
D5
4 A6
18
D[6]
D6
3 A7
19
D[7]
D7
25 A8
24 A9
21 A10
28
VCC
23 A11
D508
BATT
2 A12
26 A13
20
CS
1 A14
22
Q507
OE
14 GND
27
WE
MDMRST
ADR13
ADR14
ADR15
XOPRBE/MUT/OP
XHSTWR/IOP
XHSTRD/IOP
XHOLD
XWAIT
VDD(3.3V)
VSS
XMDMCS
XMDMINT
TEST4
TEST3
24MHz
TEST2
TEST1
CPUCLK
XTEST
VDD(5V)
IC501
VSS
XIN
XOUT
VDD(3.3V)
XHOLDAK
20KOSC/IOP
XRESCS3/OP
FMEMCLK/IOP
FMEMDI/IOP
FMEMDO/IOP
FMEMCS/IOP
IOP92
IOP91
CSI
CCLK
CBUSY1
CSO
CBUSY2
XNMI
VDD(5V)
VSS
IOP90
XRESCS1
MLAT/IOP
MIDAT/IOP
MICLK/IOP
TONE1EN
R544
2.2k
C541
K1000p
C542
K1000p
+5VD
R541
47k
R542
47k
R623
( )
....
KRXD/KTXD
....
KSCLK
TO OPERATION PANEL
KLATCH
....
KSTART
IC502
+5VD
12 A0
13
A[0]
D[0]
D0
11 A1
14
A[1]
D[1]
D1
A[2]
10 A2
15
D[2]
D2
A[3]
9 A3
17
D[3]
D3
A[4]
8 A4
18
D[4]
D4
7 A5
19
A[5]
D[5]
+5VD
D5
+5VD
6 A6
20
A[6]
D[6]
D6
5 A7
21
A[7]
D[7]
D7
27 A8
A[8]
A[9]
26 A9
A[10]
23 A10
A[11]
25 A11
A[12]
4 A12
31
A18
28 A13
1
RBA[0]
VPP
29 A14
32
RBA[1]
VCC
3 A15
RBA[2]
2 A16
RBA[3]
RBA[4]
30 A17
22 CE
24 OE
16
GND
RBA[5]
R550
100
R552
100
88
ADR13
87
ADR14
86
TEST
ADR15
85
ACK
84
83
82
MPOS
81
R609
80
C547
10k
79
Z0.1u
78
77
76
75
74
73
MDMRST
72
CPUCLK
71
XTEST
70
C548
69
Z0.1u
68
67
66
C549
65
Z0.1u
64
20KOSC
63
OPRESET
62
R554
R_B
61
100
CLE
60
R555
ALE
59
FCS
1M
X502
58
CISSEL
57
HOOK
24MHz
56
CSI
55
CCLK
C552
54
J15p
CBUSY1
53
CSO
52
CBUSY2
+5VD
51
R553
50
0
C550
49
Z0.1u
48
SPMUTE
47
46
MLAT
45
MCLK
MDAT
C551
R551
1k
0
R549
100k
Q508
VLREF
+5VA
R615
C626
( )
K1000p
CN509
TO OPEPANE MIC
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
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