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4M DRAM
IC4
4M FLASH FOR PROGRAM
2 3 4 5 24 25 26 27
MOTOR BLOCK
+24V
M
F1 1.25A
R1 Q1
BR4
820
R2 1.5K 1/2W
A[4] A[5] A[6] A[7] RBA[0] RBA[1] RBA[2] RBA[3] RBA[4] RBA[5] RXE
Q2 +3.3VD
10 11 12 13 16 17 18 19 20 9
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9R
DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
+3.3VD
IC2
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18
+5V 220
Z0.1u C103
CN3
20V
COM RM3 RM2 RM1 RM0 1 2 3 4 5
9 10 11 12 13
GND
8 7
DG
RM3
6
A18
9
C100
RM2
5
C101
RBA[5]
RD WR
DG
(
RM1
4
RM0
+24LV
BR5
DG
(
Z0.1u
C104
BR1
NC R100 ) NC R101 )
D501
D502
IC7
DG
7 22 8 23
WE OE RAS CAS
Z0.1u
6 NC6 21 NC21
C102
14 VCC-14 1 VCC-1 15 VSS-15 28 VSS-28
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]
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]
20 19 18 17 16 15 14 13 3 2 31 1 12 4 5 11 10 6 30 32
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 CE OE
D0 D1 D2 D3 D4 D5 D6 D7
21 22 23 25 26 27 28 29
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
+3.3VD
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
D0 D1 D2 D3 D4 D5 D6 D7
WE VDD VSS
7 8 24
10K
R3
10K
14 15
3
BLEEDER_ON
2 1 PG 16
(1) (2)
680 2W
R172
PG
+3.3VD
+24VF +24VF
8 7 6 5
1 2 3 4
K0.1u
THERMAL HEAD BLOCK
+24V
CE1
R102
10K J2
CE2 +3.3VD
(3) (4) (5) (6)
Q7
5.6K C10 R10
ROMCS MFCS
IC11
1 INB 2 INA VCC 5 3 4 OUT
4.7K
R12
2.2K
GND
R11
C105
DG
Z0.1u
DG
C11 ( ) NC
(7)
A[7] A[6] A[5] A[4] A[3] A[2] A[1] A[0]
PG
Q4 +2.5VD
Q5
Q6
RXE TH-TMP
CN4
COM LATCH STB1 GND +3.3V TM CLOCK GND STB2 DATA COM 1
PG
R13
2
100 100 +3.3VD
R14
3 4 5 6
C12 Z0.1u
THLAT STB1
XRESET +3.3VD +2.5VD RBA6
L21
7 8
R15
100
THCLK
C179 Z0.1u C178 Z0.1u C177 Z0.1u
RBA[5] RBA[4] RBA[3] RBA[2] RBA[1] RBA[0] A[12] A[11] A[10] A[9] A[8]
HEADON
(8)
R16
9
100 100
STB2 THDAT NC NC STB1 STB2
(9) (10) (11)
R17
10 11
NC
J100p
J100p
J100p
C150
R150
2.2K
VSS 108 VDD3.3V 107 XRESET 106 STB3 105 STB2 104 STB1 103 RBA6/IOP96 102 RBA5/OP 101 RBA4 100 RBA3 99 RBA2 98 RBA1 97 RBA0 96 ADR12 95 ADR11 94 ADR10 93 ADR9 92 ADR8 91 ADR7 90 ADR6 89 VDD2.5V 88 VSS 87 ADR5 86 ADR4 85 ADR3 84 ADR2 83 ADR1 82 ADR0 81 XWR 80 XRD 79 XR0MCS 78 DB7 77 DB6 76 DB0 75 VDD3.3V 74 VSS 73
)
)
)
R18
C13
R19
R20
C14
+5V C153 Z0.1u
C151 Z0.1u
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
C176 Z0.1u
72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 VSS 37
(
(
(
DG
+5V 4.7K R30
XWDERR
MOTOR POSITION SENSOR CN5
2 1
THDAT THCLK THLAT
R31 1K J100p C30
R151 4.7K
MOT_POS
MOT_POS RM0 RM1 RM2 RM3 RXE
C154 Z0.1u
CUT_POS
DG
+5V 4.7K R33
DG
CUTTER POSITION SENSOR CN6
2 1
ACK_EN CISON
R32 1K J100p C31
RLY CUT_POS KSTART KLATCH KSCLK KTXD KRXD OPRESET
R152 +24V +24V +5V 4.7K F2 0.25A +3.3VD
DG
DG
DG
OPE-PANEL BLOCK
+24LV
22K C155 Z0.1u C156 C157 Z0.1u
139 140 141 142
R153
MIC +5V DG KSTART KLATCH KRXD KTXD KSCLK OPERST NC
1
+5V Z0.1u C50
+3.3VA 10
144
VDD3.3V VSS
CN206
Z0.1u
143
VSSA VDDA3.3 AIN1 AIN2 AIN3 AMON VSSA X32OUT X32IN 3.3V/BATTIN XBACKEN XRAMCS 3.3V/BATTOUT 2.5V/BATTIN FTG F1 F2/OP FA/OP CPC/IP RVN/IP IRDATXD/IOP81 IRDARXD/IOP80 TXD/IOP30 RXD/IOP31 XRTS/IOP32 XCTS/IOP33 VDD2.5V TONE1 TONE2 VOL1REF VOL2OUT VOL3IN XNMI
VSS VDD3.3V XDRESET VDD5.0V VSS XRESETI XWDERR THDAT THCLK THLAT STBNP RM0/IOP00 RM1/IOP01 RM2/IOP02 RM3/IOP03 RXE/IP04 TM0/IOP10 VDD2.5V VSS TM1/IOP11 TM2/IOP12 TM3/IOP13 TXE/IP14 KSTART KLATCH KSCLK KTXD KRXD FMEMCLK/IOP24 FMEMDI/IOP25 ADSEL1 VDDA2.5V VREFB VCL VREFT VSSA
IC1
MICLK/IOP46 MIDAT/IOP45 VDD3.3V
VSS VDD3.3V DB5 DB1 DB4 DB2 DB3 XRESCS2/OP71 XCAS2/IOP44 XCAS1/IOP43 XRAS/IOP42 XMDMCS XMDMINT TEST4 TEST3 TEST2 TEST1 XTEST VDD3.3V VSS XIN XOUT VDD2.5V ADR13/OP ADR14/OP ADR15/OP XDPRBE/MUX/OP53 XHSTWR/IOP41 XHSTRD/IOP40 XWAIT/IOP60 20KOSC/IOP56 MILAT/IOP47
(12)
10 10 100 R167 R166 R165
C175
(13) (14)
Z0.1u ADR13 ADR14 ADR15 R161 100
(15)
FMEND0/IOP26
C171 Z0.1u C168 K1000p
10V Z4.7u
C158
3 4
R59
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
2
47K
C167 Z0.1u
)
NC
KSTART KLATCH
100
470
R51 R52
5
270 270 100 100 100 100 J100p 47K
(16)
XNMI
K1000p
C159
R53
6
R154
KRXD KTXD KSCLK OPRESET H/L control NC )
DG
DG
R157
AIN2 C161 K0.1u
C166 (
R158
R54
7
K0.1u
C162
8
C160
R55 R56
9 10
K2200p
AMON X1
BR2
1
R155
2
(17) (18) (19) (20) (21)
22K
R156
DG
+3.3V/BATIN C163 J15p
( NC
)
C164 J15p
A
B
R57
C51
PWRCNT
Z0.1u
C165
DG
HEADON MDMRST CPC PAPER JAM HSTXMUTE BELL TELRXEN PSHORT MDMTXEN
DG
R58
(
DG
R70
0
NC ( )
C70
C77
Q9
NC ( )
Z1u
FTG F1
LEDON
TO POWER SUPPLY
CN1
PCONT +6V +6V GND GND GND +24V +24V +24V 9 8 7
DG
+5V
+5V
+5V +5VA
(22)
FTG
AIN1
(23)
+3.3V/BATIN TO +2.5V/BATIN
+3.3V/BATIN
C71
+3.3VD TO +2.5V
+2.5VD +2.5VD +3.3VD
+3.3VD
+6V
+6V
DG DG
+2.5V/BATIN
+5V 16V220u
Q10
+2.5V/BATIN
+3.3V/BATIN
C72
DG
5 4
IC15
Z1u
2
IC3
1 VDD GND VOUTVDET 4 CE 5
+5V
Z0.1u
100K
R71
33K
6.3V47u
PG
DG
2 3
C76
3 2
F36K
1
Z1u
+24V Z0.1u
C75
C74
Z0.1u
6.3V47u
Z0.1u
C82
C83
R74
( NC
Z0.1u C87
)
4.7M R79
J100p
Z0.1u
C78
C79
C73
C81
1
C80
DG
DG DG DG
RESET
DG DG DG DG
BAT1
R73
J1
R77
2.2K
R80
VOUT VIN 3 VSS
R72
Q11
D503
330K
6
+6V TO +5V REG
+5V TO +3.3VD REG
R78
+3.3VD
F1.1K
DG
(24)
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]
20 19 18 17 16 15 14 13 3 2 31 1 12 4 5 11 10 6 30 32
IC6
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 CE OE D0 D1 D2 D3 D4 D5 D6 D7 21 22 23 25 26 27 28 29
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
FAX TX signal
+5VA
+5VA +24LV
+24LV TO ANALOG CN2
1 +24V DG +5V PAPER LINETX TONE1 RLY CPC JAM
FAX RX signal
RA7 10K
1 2 3 4 8 7 6 5
+5VA
Z0.1u
C106
WE VDD VSS
7 8 24
4.7K
C32
R34
DG
J100p
+3.3VD
J5
0
DG
2 3 4 5
MDMTXEN TONE1EN
C94 Z0.1u +5VA
PAPER
R35 1K +5VA 2.2K R40
IC10
1 VDD 14 13 12 11 10 9 8 VSS 2
A18
9
DG
TELRXEN HSRXEN
RLY CPC JAM
+5VA 4.7K R36
6 7 8 9
RBA[5]
C114 R126 K680p Z0.1u C116 K0.1u R125 C115 39K
L12
3 4 5
J100p R129
R127 330K
C127
(1)
C112 K0.033u
2.2K
IC9
1 2
0
R37 1K +5VA 4.7K R38
V+
A B
8 7 6
PSHORT BELL HOOK
C117
NC ( )
R131 3.3K R123 100K
2.2K
10 P_SHORT 11 BELL/DCN 12 HOOK
6 7
DG
C126
D504
4
5
R128 NC
V-
)
(2) (3) (4) (5) (6)
K330p R112 C111 330K
+2V C113 K0.01u
3
R39 1K
DG
36K
DG
C33
L9 0 L10 0 R124 47K
DG
C34 K0.01u
J100p
13 LINERX 14 MONRX 15 H/STX_MUTE 16 H/SRX
+2V L11
(
R130
DG
24K
HSTXMUTE
C128 K0.1u
DG
DG
K0.1u
C110
DG
Q16
C118 NC C119
(
)
+5V +5VA R117
K0.1u R110 2.2K R111
K0.1u
C125
0
TO FLASH PROGRAMMER
C129 Z0.1u Q18 C124
)
47K
NC
CN10
1
DG
(
R118
)
( NC
) )
R119
C123
( ) NC
( ) NC
R120
+5V+ TXD RXD RTS CTS DSR DTR GND
BELL ) NC NC
NC
(
2 3 4 5 6 7 8
DG
(7) (8)
TONE2EN
NC )
TELRXEN PSHORT
(
C120
R113
R114
R115
C122
( ) NC
ACK_EN R121 ( ) NC
( ) NC
( NC
)
( NC
)
( NC
)
(
Q17
)
DG DG
)
(
MDMTXEN HSTXMUTE ACK_EN
R116
( NC
DG
C121
( NC
DG
+3.3VD
(9) (10)
MDMCS
D[7]
C251
D[6]
Z0.1u 10K L6 L4 L3 C238 Z1u L17 L18
R225
) (
R226
NC C224
NC
80 79 78 77 R231 76 75 0 74 C241 Z0.1u C239 73 C240 Z0.1u Z0.1u 72 71 70 R229 1K C237 69 J12p 68 67 J12p R230 66 0 65 C236 L7 64 63 62 R228 47K 61 60 C233 59 58 C235 Z0.1u 57 16V10u 56 R227 55 22 C232 C234 Z0.1u 54 J100p 53 ( ) 52 C230 NC 51 ( ) IA1_HSMIC C231 C229 Z0.1u _BIAS NC
(11)
D[0]
1 2
IC16
VCC 5
C228
(
(
)
Z0.1u
K0.068u
C227
C226
C225
D[5] D[1] D[4] D[2] D[3]
GND
0 C250
32.256MHz
DG
NC ( )
DG
K0.1u R222 3.3K C222 0
R223
3.9K
C221 K0.22u
SPMUTE
DG
R233
WRn RDn CSn VDDo77 AVDD ENABLE_VREG VBG AVSS VSSo72 VSS71 VDD70 XTLO XTLI TEST GPI2 GPI1 GPI0 GP02 GPO1 RINGDn IA1_VDD IA_AVSS59 IA1_SPKRM IA1_SPKRP IA1_TXP RESERVED55 IA1_AVDD IA1_VC IA1_Vref
MDMCS
+3.3VD C200
( ) NC
XTEST
K4700p
C202 Z0.1u
R219
0
C201
+3.3VD
(14)
BLEEDER_ON
Z1u C243 Z1u L20 22
+3.3VD R163 150 TEST R162 1M D10p
BR3
C203
VSS1 VDD2 VSSo3 VDDo4 EYEXY/XCLK SIA_TXSIN SIA_RXOUT PIA_RESETn PIA_STROBE PIA_TXSIN PIA_RXOUT PIA_CNTRL_SIN PIA_CLKIN PIA_SCLK IA1_SCLK IA1_CLKIN IA1_CNTRL_SIN IA1_TESTC IA1_RXOUT IA1_TXSIN IA1_STROBE IA1_RESETn IA2_SCLK IA_AVSS IA2_CLKIN IA2_CNTRL_SIN IA2_TESTC IA2_RXOUT IA2_TXSIN IA2_STROBE
C173 D10p
(15)
K0.1u R218
C215
4.7K C204 J33p
DG
+3.3VD R232
Z0.1u
C172
K0.1u
RESETn
2.2K
C209
HOOK PWRCNT HSRXEN TONE2EN TONE1EN
X2 24.00MHz
(
C174
1 2 3 C205 4 Z1u 5 6 7 8 9 100 10 11 12 13 14 R204 15 16 100 17 18 100 19 20 100 21 22 23 24 25 100 26 27 100 28 100 29 100 30
DG
DG
R215
1K
K0.047u R217
C210
R205
R206
R203
Z0.1u
DG
R202
(16) (17) (18) (19) (20) (21)
R178 1K
C206
R209
1K
DG
R216
DG
R207
R208
R210 R211 R212 R213
K0.1u
C208
DG
R159 K1000p C169 120K
R160 C170
( ) NC
0
XCLK/EYEXY EYESYNC
EYECLK
R214 2.7K C207 K1000p
DG
EYE PATTERN MONITOR TEST PAD
DG
DG
SPMUTE
CIS BLOCK
LEDON CISON AIN1 F1 FTG
+5V R143
(22)
+3.3VD
3.3K
220
220
2.2K
22K
R142
10K C144
0
)
TO SPEAKER
R144 120K
R94
R90
(23)
+5V TO +2V
+2V
+2V
IC12
1 2 CD FC2 FC1 VIN VO2 GND VCC VO1 8 7 6 5
(
NC
CN9
1
R91
R92
R93
R146
)
SP+ SP-
R145 120K
NC
2
Q14
+5VA Q13 +5V 12K 10
3
C142 50V4.7u
C141
( ) NC
C145
C146
( ) NC
R147
D507
R75
NC
Z0.1u
R95 1.5K
R96
C93
C90
C91
C143 C140 R140 15K R141
K0.012u 9.1K
(
NC
NC
C92 J100p
( ) NC
DG
(
DG
6.3V47u
)
8.2K
C85
R76
C84
C86
(
(
)
K0.22u
CN8
1
2
3
4
5
6
LEDVCC
LEDGND
FI(DATA)
FTG(CLK)
AIN(SI)
+3.3V
GND
7
DG
DG
DG
(24)
KX-FT938FX : DIGITAL BOARD SCHEMATIC DIAGRAM
(
NC
( ) NC
4
NC )
)
)
(
(
NC
)
(
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
DG
1K
IC5
DG
(
TAM MODEL ONLY
R164
NC
C242
L19
D506
)
(13)
MDMRST
R200
A[5] A[4] A[3] A[2] A[1] A[0]
C220 C219
81 82 83 84 85 86 87 88 89 90 91 Z1u 92 93 94 95 96 97 98 99
SPRn A4 A3 A2 A1 A0 VDDo87 VSSo88 VSS89 VDD90 D0 D1 D2 D3 D4 D5 D6 D7 RESETn 100 IRQn
IA1_HSMICM IA1_HSMICP RESERVED48 IA_RXP IA_AVSS46 IA2_VDD IA2_SPKRM IA2_SPKRP IA2_TXP RESERVED41 IA_AVSS40 IA2_AVDD IA2_VC IA2_VREF IA2_HSMIC_BIAS IA2_HSMICM IA2_HSMICP RESERVED33
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 IA2_RXP 32 IA2_ 31
(
NC )
D505
DG
K0.1u R220
DG
C217 K0.1u
R221 10K 4.7K
C216 K0.22u
0
)
) C223 NC (
DG
(
) NC
(12)
0
3
4
R224
R201
X3
( ) NC
DG
NC
)
20K
Z0.1u C213
Z0.1u C214
C211
C212
NC
) NC