Panasonic KX-FT982UA-B / KX-FT982UA-W / KX-FT984UA-B / KX-FT988UA-B / KX-FT988UA-W (serv.man4) Service Manual / Supplement ▷ View online
3
KX-FT982UA-B / KX-FT982UA-W / KX-FT984UA-B / KX-FT988UA-B / KX-FT988UA-W
2 CHANGES
(Suffix Code: B or later)
2.1.
Schematic Diagram (Digital Board (PCB1))
[Changed from original section “17.1. Digital Board (PCB1):KX-FT982/KX-FT984”]
KX-FT982UA / KX-FT984UA : Di
g
ital Board
(1/4
)
1/4
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(a)
(b) (c)
(d)
(i)
(e) (f)
(g)
(h)
(j) (k)
(m)
(n) (p)
(q)
(r)
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
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]
A[7]
A[8]
A[9]
A[10]
A[11]
A[12]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
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]
STB1
STB2
A[4]
A[5]
A[6]
A[7]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[10]
A[11]
A[12]
A[11]
A[12]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
RM3
RM2
RM1
RM0
RXE
THLAT
HEADON
RXE
STB1
THCLK
STB2
THDAT
TH-TMP
R2
R1
IC4
1
VCC1
2
DQ1
3
DQ2
4
DQ3
5
DQ4
6
NC1
7
*WE
8
*RAS
9
A9R
10
A0
11
A1
12
A2
13
A3
14
VCC2
15
VSS1
16
A4
17
A5
18
A6
19
A7
20
A8
21
NC2
22
*OE
23
*CAS
24
DQ5
25
DQ6
26
DQ7
27
DQ8
28
VSS2
IC2
1
A11
2
A9
3
A8
4
A13
5
A14
6
A17
7
*WE
8
VDD
9
A18
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
DQ0
22
DQ1
23
DQ2
24
VSS
25
DQ3
26
DQ4
27
DQ5
28
DQ6
29
DQ7
30
*CE
31
A10
32
*OE
C26
1n
C34
1n
CE1
CE2
C28
100n
C27
100n
C35
100n
DG
+3.3VD
DG
+3.3VD
R21
2.2k
C20
100p
RA2
100
4
3
2
1
8
7
6
5
+24V
DG
+2.5VD
RB6
+3.3VD
DG
DG
C37
100n
A0
A1
A2
A3
A7
A4
A6
A5
RB0
RB1
A11
A8
A12
RB2
A10
A9
RB4
RB5
RB3
+2.5VD
+3.3VD
RA3
10k
1
2
3
4
4
R10
4.7k
R5
100
R8
820
R12
1.5K 1/2W
IC7
1
I1
2
I2
3
I3
4
I4
5
I5
6
I6
7
I7
8
GND
9
COMMON
10
O7
11
O6
12
O5
13
O4
14
O3
15
O2
16
O1
+6V
R1
220
D12
D13
DG
CN4
1
COM
2
LATCH
3
STB1
4
GND
5
+3.3V
6
R1
7
R2
8
GND
9
TM
10
CLOCK
11
GND
12
STB2
13
DATA
14
COM
Q7
1
S1
2
S2
3
S3
4
G
5
D1
6
D2
7
D3
8
D4
+24V
R9
5.6k
DG
C5
100n
+3.3VD
C3
100n
C2
100n
+24VF
+24VF
CA8
100p
1
2
3
4
4
DG
RA5
3.3k
1
2
2
3
4
DG
Q1
B
E
C
IC11
1
B
B
2
A
3
GND
5
VCC
4
Y
+3.3VD
D11
CN3
1
COM
2
RM3
3
RM2
4
RM1
5
RM0
F1
32
1.25
12
JS2
NC
Q2
B
C
E
Q6
B
C
E
Q4
B
C
E
Q5
B
C
E
MOTOR BLOCK
THERMAL HEAD BLOCK
4
KX-FT982UA-B / KX-FT982UA-W / KX-FT984UA-B / KX-FT988UA-B / KX-FT988UA-W
KX-FT982UA / KX-FT984UA : Di
g
ital Board
(2/4
)
2/4
(14)
(15)
(16)
(18)
(17)
(19)
(20)
(21)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
(32)
(22)
(11)
(10)
(10)
(12)
(13)
(a)
(b) (c)
(i)
(e) (f)
(g)
(h)
(j) (k)
(n) (p)
(q)
(r)
(d)
(m)
㪝㪘㪯㩷㪫㪯
㪝㪘㪯㩷㪩㪯
+
-
+
-
D[0]
D[6]
D[7]
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
RBA[0]
RBA[1]
RBA[2]
RBA[3]
RBA[4]
RBA[5]
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]
TONE1
TONE1
ASIC_VOL_IN
ASIC_VOL_OUT
TONE2
HSTXMUTE
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
RLY
PSHORT/ACK_EN
DCN
HOOK
PAPER
BELL/CPC
JAM
IC6
NC
1
A11
2
A9
3
A8
4
A13
5
A14
6
A17
7
*WE
8
VDD
9
A18
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
DQ0
22
DQ1
23
DQ2
24
VSS
25
DQ3
26
DQ4
27
DQ5
28
DQ6
29
DQ7
30
*CE
31
A10
32
*OE
C39
1n
ROMCS
MFCS
C44
100n
NC
+3.3VD
DG
IC12
1
CD
2
FC2
3
FC1
4
VIN
5
VO1
6
VCC
7
GND
8
VO2
*C55
NC
DG
*R46
NC
*R49
NC
*R51
NC
DG
*R53
NC
+5VA
*C69
NC
C75
10n
C101
100n
R72
6.8k
R70
47k
DG
C80
22n
R63
33k
DG
DG
DG
C70
100n
C82
100n
R66
220k
C90
( )
NC
DG
+24VA
R71
10k
C95
1n
+5V
DG
+5V
DG
CN9
1
SP+
2
SP-
R75
NC
+3.3VD
D0
D1
D2
D3
D7
D5
D4
D6
C83
NC
R64
NC
R47
2.7k
R48
1.8k
C53
2.2n
R44
820k
R43
27k
R45
1M
C58
2.2n
R50
560k
R54
6.8k
R55
3.3k
R61
3.3M
R68
18k
RA10
120k
1
2
3
4
4
*IC9
5
6
7
*IC9
3
2
1
*IC9
4
V-
8
V+
L3
0
L2
0
RD
WR
C54
220n
R67
82k
RA11
4.7k
1
2
3
45
6
7
8
+5V
CN2
1
+5V
2
DG
3
RLY
4
HOOK
5
LINERX
6
LINETX
7
HSRX
8
HSTX
9
BELL/CPC
10
PAPER
11
JAM
12
R84
NC
*R85
NC
*R86
NC
RA6
4.7k
1
23
4
C64
56p
*Q17
NC
B
E
C
L4
L5
DG
C102
1u
C103
1u
IC10
1
I/O1
2
O/I1
3
O/I2
4
I/O2
5
CONT2
6
CONT3
7
VSS
8
I/O3
9
O/I3
10
O/I4
11
I/O4
12
CONT4
13
CONT1
14
VDD
C92
10u
*C57
NC
*C61
NC
*C66
NC
*C77
NC
L6
( )
NC
*C62
100p
*C86
100p
C85
0.1u
+6VA
+6VA
+6VA
Q15
B
C
E
Q16
B
C
E
C52
0.1u
*R58
120k
*R69
220k
*C89
82p
*C78
0.1u
*R42
NC
*R57
NC
*R78
56k
*R59
27k
ACK SIGNAL FOR RU/UA
TO SPEAKER
TO ANALOG
5
KX-FT982UA-B / KX-FT982UA-W / KX-FT984UA-B / KX-FT988UA-B / KX-FT988UA-W
KX-FT982UA / KX-FT984UA : Digital Board (3/4)
3/4
(1)
(2)
(3)
(4)
(5)
(6)
(8)
(9)
(7)
(t)
(u)
(v)
(w)
(x)
(y)
(z)
(A)
(B)
(s)
TXD
RXD
RTS
CTS
HEADON
MDMRST
PAPER
THDAT
THCLK
THLAT
RXE
RM3
RM2
RM1
RM0
LEDON
OPRESET
TH-TMP
TONE1
TONE2
ASIC_VOL_OUT
ASIC_VOL_IN
FTG
F1
AIN1
TXD
RXD
RTS
CTS
KLATCH
KSCLK
KSTART
KLATCH
KSCLK
KTXD
OPRESET
KSTART
MOT_POS
CUT_POS
CISON
HSTXMUTE
R1
R2
RLY
JAM
KTXD
BELL/CPC
MOT_POS
CUT_POS
JOG2
JOG1
JOG2JOG2
JOG1JOG1
IC1
1
VSSA1
2
VDDA3.3
3
AIN1
4
AIN2
5
AIN3
6
AMON
7
VSS1
8
X32OUT
9
X32IN
10
VDD3.3V/BATTIN
11
XBACKEN
12
XRAMCS
13
VDD3.3V/BATTOUT
14
VDD2.5V/BATT
15
FTG
16
F1
17
F2
18
FR
19
CPC
20
RVN
21
IRDATXD
22
IRDARXD
23
TXD
24
RXD
25
RTS
26
CTS
27
VDD2.5V1
28
TONE1
29
TONE2
30
VOLU1
31
VOLU2
32
VOLU3
33
XNMI 34
FMEMDO 35
VDD3.3V1
36
VSS2
37
VSS3
38
VDD3.3V2
39
MIDAT
40
MICLK
41
MILAT
42
20KOSC
43
XWAIT
44
XHSTRD
45
XHSTWR
46
XOPRBE
47
ADR15
48
ADR14
49
ADR13
50
VDD2.5V2
51
XOUT
52
XIN
53
VSS4
54
VDD3.3V3
55
XTEST
56
TEST1
57
TEST2
58
TEST3
59
TEST4
60
XMDMINT
61
XMDMCS
62
XRAS
63
XCAS1
64
XCAS2
65
XRESCS2
66
DB3
67
DB2
68
DB4
69
DB1
70
DB5
71
VDD3.3V4
72
VSS5
73
VSS6
74
VDD3.3V5
75
DB0
76
DB6
77
DB7
78
XROMCS
79
XRD
80
XWR
81
ADR0
82
ADR1
83
ADR2
84
ADR3
85
ADR4
86
ADR5
87
VSS7
88
VDD2.5V3
89
ADR6
90
ADR7
91
ADR8
92
ADR9
93
ADR10
94
ADR11
95
ADR12
96
RBA0
97
RBA1
98
RBA2
99
RBA3
100
RBA4
101
RBA5
102
RBA6
103
STB1
104
STB2
105
STB3
106
XRESET
107
VDD3.3V6
108
VSS8
109
VSS9
110
VDD3.3V7
111
XORESET
112
VDD5.0V
113
VSS10
114
XRESETI
115
XWDERR
116
THDAT
117
THCLK
118
THLAT
119
STBNP
120
RM0
121
RM1
122
RM2
123
RM3
124
RXE
125
TM0
126
VDD2.5V4
127
VSS11
128
TM1
129
TM2
130
TM3
131
TXE
132
KSTART
133
KLATCH
134
KSCLK
135
KTXD
136
KRXD
137
FMEMCLK
138
FMEMDI
139
ADSEL1
140
VDDA2.5
141
VREFB
142
VCL
143
VREFT
144
VSSA2
IC3
1
VIN
2
VSS
3
VOUT
5
ON/OFF
4
VDOUT
DG
R23
4.7
+3.3VD
C23
100n
DG
R17
43k
R18
20k
C18
1n
C19
2.2n
DG
X1
R26
N
C
C32
100n
DG
+3.3V/BATIN
R31
470
C38
1n
C22
100n
C24
1n
IC15
3
VOUT
1
VSS
2
VIN
C9
1u
C10
1u
C11
47u
+5V
+5V
+6V
+6V
+5V
+5V
DG
+3.3VD
C13
47u
+3.3VD
R15
33k
C16
1n
+3.3VD
DG
RESET
+5V
C17
100n
R22
1
.8k
R20
36k
+2.5VD
DG
R24
100k
+5V
R2
100
R7
0
R11
4.7k
+5V
C30
100n
R28
4.7M
R27
330k
DG
DG
+3.3V/BATIN
+2.5V/BATIN
+2.5V/BAT
NMI
AMON
C1
100n
DG
RA4
220
1
2
3
4
4
DG
+5V
DG
R32
NC
CN10
NC
6
CN10
NC
7
CN10
NC
8
CN10
NC
2
CN10
NC
3
CN10
NC
1
CN10
NC
4
CN10
NC
5
*C12
NC
DG
+5VA
C31
12p
C33
15p
CN1
1
+24V
2
+24V
3
+24V
4
GND
5
GND
6
GND
7
+6V
8
+6V
C4
NC ( )
+24V
+24VA
DG
DG
DG
D14
R30
2.2k
DG
JS1
NC
CN6
1
2
DG
DG
+5V
DG
+3.3V/BAT
RA1
4.7k
1
2
3
4
5
6
7
8
CA1
NC
1
2
3
4
4
R83
47k
CN5
1
2
DG
C6
33u
R16
22k
L1
0
BAT1
1
2
R19
1.1k
R6
100
C105
4700p
R91
10k
R92
10k
R93
1
k
R94
1
k
C104
4700p
DG
C14
0.1u
C15
0.1u
C21
0.1u
C25
0.1u
C8
0.1u
C7
0.1u
C59
0.1u
C60
0.1u
Q10
B
C
E
Q11
B
C
E
*R14
NC
CN7
1
JOG1
2
JOG2
3
+5V
4
DG
5
KSTART
6
KLATCH
7
KTXD/KRXD
8
KSCLK
9
OPERST
+6V TO +5V REG
+3.3VD TO +2.5V REG
+5VD TO +3.3V REG
TO FLASH PROGRAMMER
TO POWER SUPPLY
OPE-PANEL BLOCK
MOTOR POSITION SENSOR
CUTTER POSITION SENSOR
6
KX-FT982UA-B / KX-FT982UA-W / KX-FT984UA-B / KX-FT988UA-B / KX-FT988UA-W
KX-FT982UA / KX-FT984UA : Digital Board (4/4)
4/4
(14)
(15)
(16)
(18)
(17)
(19)
(20)
(21)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
(32)
(22)
(11)
(10)
(10)
(12)
(13)
(t)
(u)
(v)
(w)
(x)
(y)
(z)
(A)
(B)
(s)
㪝㪘㪯㩷㪫㪯
㪝㪘㪯㩷㪩㪯
TONE1EN
MDMTXEN
HSRXEN
DCN
SPMUTE
D[1]
D[2]
D[3]
D[4]
D[5]
D[0]
D[1]
D[2]
D[3]
D[4]
PSHORT/ACK_EN
MDMRST
TONE1EN
MDMTXEN
SPMUTE
FTG
HSRXEN
PSHORT/ACK_EN
LEDON
CISON
HOOK
AIN1
F1
D[5]
D[6]
D[7]
A[4]
A[3]
A[2]
A[0]
A[1]
R39
1M
R38
0
DG
C41
1n
C42
1n
A13
A14
A15
XTST
C47
33p
DG
C56
4.7n
DG
C68
1u
1u
DG
EYXY
EYCLK
EYSYNC
C67
100n
X3
C73
12p
C76
10p
DG
R60
47k
R65
22
C87
100n
CN8
1
LEDVCC
2
LEDGND
3
F1(DATA)
4
FTG(CLK)
5
+3.3V
6
GND
7
AIN(SI)
+5V
DG
+3.3VD
DG
C50
100p
DG
DG
DG
R52
10k
*R79
0
+3.3VD
+3.3VD
C49
NC
R62
2.7k
DG
C81
1n
RA8
3.3k
1
2
3
4
5
6
7
8
6
7
8
R34
10
C51
100n
C43
1n
R37
4.7k
C40
1n
C46
NC
DG
C48
47u
RA7
22k
1
2
3
4
R56
820
X2
1
2
3
R90
NC
+3.3VD
+3.3VD
+3.3VD
RA9
4.7k
1
2
3
4
5
6
7
8
C71
100n
C74
100n
*IC5
17
IA1_CNTRL_SIN
18
IA1_TESTC
19
IA1_RXOUT
20
IA1_TXSIN
21
IA1_STROBE
22
IA1_*RESET
23
IA1_RXP
24
IA1_HSMICP
25
IA1_HSMICM
26
IA1_VREF
27
IA1_VC
28
IA_AVSS
29
IA1_AVDD
30
IA1_TXP
31
IA1_SPKRP
32
IA1_VDD
33
IA1_SCLK
34
PIA_SCLK/EYECLK
35
*RINGD
36
GPO1
37
GPO2
38
GPI0
39
GPI1
40
GPI2
41
TEST
42
VSS2
43
XTLI/CLKIN
44
XTLO
45
VDD2
46
AVSS
47
ENABLE_VREG
48
AVDD
49
VDDO2
50
*CS
51
*RD
52
*WR
53
*SPR
54
A4
55
A3
56
A2
57
A1
58
A0
59
VSS3
60
D0
61
D1
62
D2
63
D3
64
D4
1
D5
2
D6
3
D7
4
*RESET
5
*IRQ
6
VDD1
7
VDDO1
8
EYEXY/XCLK
9
PIA_*RESET
10
VSS1
11
PIA_STROBE/EYESYNC
12
PIA_TXSIN
13
PIA_RXOUT
14
PIA_CNTRL_SIN
15
PIA_CLKIN
16
IA1_CLKIN
C84
10u
C88
NC
( )
C91
C79
100n
C72
( )
NC
C65
NC
( )
C36
NC( )
C93
0.1u
0.1u
0.1u
C96
C98
C97
0.1u
0.1u
Q13
B
C
E
Q14
B
E
C
CIS BLOCK
