Panasonic KX-FT901CX-B Service Manual page 177

17.1.2. KX-FT903CX-B/W/S
MOTOR BLOCK
+24V
+5VD
R19
820
R20
1.5K 1/2W
Q1
D1
PG
TO MOTOR
CN3
COM 1
IC7
16 1
NB 2
15 2
NA 3
14 3
B 4
13 4
A 5
12 5
11 6
10 7
D2
9 8
GND
BR4
THERMAL HEAD
+24V
BLOCK
Q2
8 1
7 2
TO THERMAL
6 3
HEAD
5 4
CN4
COM 1
STB1
COM 2
+5VD
GND 3
STB2
GND 4
C120
+5V 5
STB3
Z0.1u PG
PG
TM 6
R12
7
STB1
100
R13
8
STB2
100
R14
9
STB3 100
R15
L20
THCLK 10
BEAD
100
R16
THLAT 11
100
R17
THDAT 12
100
LATCH
5V
5V
0V
CLOCK
0V
+5VD
MOTOR
POSITION
SENSOR
CN5
R5
R3 1K
( )
1 1
NC
2 2
+5VD
CUTTOR
POSITION
SENSOR
CN6
R6
R4 1K
( )
1 1
NC
2 2
OPE-PANEL BLOCK
CN7
L7
RXD 12
L5
LATCH 11
L8
TXD 10
L3
START 9
R7
L6
SCLK 8
L1
270
BEAD
DG 7 +5VD
L4
RESET 6
L19 BEAD
+5V 5
AG 4
NC 3
MICIN 2
L2
0
FG 1
PG
TO POWER +24V1
+24V +5VD +5VA
UNIT
+24V +5VD
F2
0.25A
DG
CN1
+5V 1
2
DG
PG
3
PG
4
PG
5
+24V
6
+24V
7
+24V
T5
T4
T3
T2
R23 100
RXE
A
Q4
B
R24 100
RM[3]
R25 100
RM[2]
R26 100
RM[1]
R27 100
RM[0]
PRINTING
23~24V
THERMAL
Q3
HEAD TEMP
C9
+5VD
Z0.1u THON
IC8
1 20
DIR VCC
2 19
A1 G
3 18
A2 B1
4 17
A3 B2
5 16 XTHDAT
A4 B3
6 15 XTHLAT
A5 B4
7 14 XTHCLK
A6 B5
XSTB3
8 13
A7 B6
XSTB2
9 12
A8 B7
XSTB1
10 11
GND B8
MOT_POS
MOT_POS
CUT_POS
THON
PCONT
CISON
RLY
CUT_POS
KSTART
KLATCH
KSCLK
KTXD
KRXD
OPRESET
/DR
+5VD
100 KRXD
100 KLATCH
100 KTXD
100 KSTART
BEAD KSCLK
100 OPRESET
PCONT
( )
Q12
+5VA
+5VD TO +3.3VD
+3.3VD
+5VD +3.3VD
+3.3VD
IC3
1 5
VOUT CE
2
( )
VDD
3 4
NC
GND VDET
R34
C16 C23
Z0.1u Z0.1u
KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S
+3.3V/BATIN
C114 NC
( )
C27 Z0.1u
IC4 1M SRAM
1 32
NC VDD
RBA[4] 2 31 RBA[3]
A16 A15
RBA[2] 3 30
A14 CE2
RBA[0]
4 29
A12 R/W
A[7] 5 28 RBA[1]
A7 A13
A[6] 6 A[8]
27
A6 A8
A[5] 7 26 A[9]
A5 A9
A[4] 8 25 A[11]
A4 A11
A[3]
9 24
A3 OE
A[2] 10 23 A[10]
A2 A10
A[1]
11 22
A1
CE1
A[0] 12 21 D[7]
A0 I/O8
D[0] 13 D[6]
20
I/O1 I/O7
D[1] 14 19 D[5]
I/O2 I/O6
D[2] 15 D[4]
18
I/O3 I/O5
D[3]
16 17
GND I/O4
WATCHDOG ERROR
XRESET
0V (WATCH DOG
ERROR OCCUR)
+3.3VD +2.5V
C31
Z0.1u
XSTB1
XSTB2
XSTB3
C28
+5VD Z0.1u
109 VSS
C17
110 VDD3.3V
111 XDRESET
Z0.1u
112 VDD5.0V
113 VSS
XWDERR
114 XRESETI
R35
115 XWDERR
XTHDAT 4.7K
116 THDAT
XTHCLK
117 THCLK
XTHLAT
118 THLAT
119 STBNP
RM[0]
120 RM0/IOP00
RM[1]
121 RM1/IOP01
RM[2]
122 RM2/IOP02
RM[3]
123 RM3/IOP03
RXE
124 RXE/IP04
125 TM0/IOP10
126 VDD2.5V
C29
127 VSS
Z0.1u
128 TM1/IOP11
129 TM2/IOP12
130 TM3/IOP13
131 TXE/IP14
32.768kHz
132 KSTART
133 KLATCH
134 KSCLK
135 KTXD
136 KRXD
137 FMEMCLK/IOP24
138 FMEMDI/IOP25
139 ADSEL1
C20 C24
R29 22K 140 VDDA2.5V
Z0.1u
Z0.1u 141 VREFB
142 VCL
C25
143 VREFT
Z0.1u
144 VSSA
+3.3VD +3.3VA
R31
4.7
C30
R30
43K
K0.1u
AMON
C15
K1000p
X1
32.768KHz
R37
+3.3V/BATIN
(
+3.3VD TO +2.5V
+2.5V +2.5V
177
IC2 4M ROM
A[0] 12 D[0]
13
A0 D0
A[1] 11 14 D[1]
A1 D1
A[2] 10 D[2]
15
A2 D2
A[3] D[3]
9 A3 17
D3
A[4] 8 A4 18 D[4]
D4
A[5] 7 A5 D[5]
19
D5
A[6] 6 A6 20 D[6]
D6
A[7] 5 A7 D[7]
21
D7
A[8]
27
A8
A[9] 26
+3.3VD
A9
A[10]
23
A10
A[11] 25
A11
A[12] 4 A12
31
PGM
RBA[0] 28 1
A13 VPP
RBA[1] 29
32
A14 VCC
RBA[2]
3 A15
RBA[3] 2 A16
RBA[4] 30
A17
22
CE
24
16
OE GND
VSS 72
VDD3.3V
71
DB5 70
DB1
69
DB4 68
DB2
67
DB3
66
XRESCS2/OP71 65
XCAS2/IOP44
64
XCAS1/IOP43 63
XRAS/IOP42
62
XMDMCS
61
XMDMINT 60
TEST4
59
TEST3 58
24MHz
TEST2
57
IC1
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
MIDAT/IOP45
XWAIT/IOP60
43
VDD3.3V
20KOSC/IOP56
42
MILAT/IOP47 41
40
39
FMEND0/IOP26
38
VSS 37
XNMI
C44
Z0.1u
BR3
+3.3VD
)
R58
+3.3V/BATIN TO +5VA TO +2V
+2.5V/BATIN
+2.5V/BATIN +3.3V/BATIN +3.3V/BATIN
L15
0
+2.5V/BATIN
R45
( )
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
C48
Z0.1u
(11)
(12)
(13)
(14)
(15)
(16)
PWDN
PAPER
SPMUTE
/MDMCS
(17)
XTEST
C49 (18)
(19)
Z0.1u
(20)
+3.3VD
ADR13
ADR14
TEST
ADR15
/CD
HOOK
100 DATA
R54 HSRXEN
TONE2EN
TONE1EN
C50
Z0.1u
DCLK
R57
(21)
1K
(22)
(23)
(24)
(25)
0
(26)
+2V
+5VA
R88
12K
(27)