Panasonic KX-FL423RU (serv.man2) Service Manual / Supplement ▷ View online
5
KX-FL423RU-B / KX-FL423RU-W
C
E
B
A
D
F
6
5
8
7
D[15]
A[11]
D[5]
D[10]
A[14]
A[9]
D[11]
A[12]
D[8]
D[12]
D[0]
D[13]
A[17]
A[6]
A[19]
A[7]
D[4]
D[2]
A[18]
A[8]
A[16]
D[9]
D[6]
A[10]
A[15]
D[1]
D[14]
D[3]
D[7]
A[13]
D[15]
D[14]
D[13]
D[12]
D[11]
D[10]
D[14]
D[13]
D[12]
D[11]
D[10]
D[9]
D[8]
D[8]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
A[16]
A[15]
A[14]
A[13]
A[12]
A[11]
A[10]
A[9]
A[20]
A[21]
A[15]
A[14]
A[13]
A[12]
A[11]
A[10]
A[9]
A[20]
A[21]
A[22]
A[19]
A[18]
A[8]
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[18]
A[8]
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[17]
A[1]
+3.3V
+3.3V
+3.3V
1
DS
2
VSS
3
NC
5
VDD
4
OUT
C118
K0.01u
XRESET
001:3C;001:4B
001:3C;001:4B
+1.8V
C135
Z0.1u
C136
Z0.1u
C137
Z0.1u
C138
Z0.1u
C141
Z0.1u
C142
Z0.1u
C139
Z0.1u
C140
Z0.1u
C148
Z0.1u
C150
Z0.1u
C149
Z0.1u
C145
Z0.1u
C146
Z0.1u
C143
Z0.1u
C147
Z0.1u
C144
Z0.1u
+3.3V
R145
1
C152
K0.22u
R146
1
R147
1
C151
K0.22u
C134 K0.22u
+1.8V
C131
Z0.1u
C124
Z0.1u
C123
Z0.1u
R157
180k
C176
K1u
R156
1k
D100
1
2
3
C164
( )
NC
C175
K1u
C174
K1u
C163
NC
( )
4
NC
3
VOUT
1
VSS
2
VIN
+3.3V
RTCPWRCORE
001:5E
RTCPWR
001:5E
XBATRST
001:3C
RTCPWR
001:8E
RTCPWRCORE
001:8E
L100
C133
K1000p
+3.3V
L101
C128
K1000p
C120
Z0.1u
C119
Z0.1u
C129
K1000p
C121
Z0.1u
C122
Z0.1u
L102
C130
K1000p
XRESET
001:3C;001:5F
001:3C;001:5F
SDCLK
001:1B
SDDQMU
001:2B
SDDQML
001:2B
SDWE
001:2B
CAS
001:2B
RAS
001:2B
SDCS
001:2B
+3.3V
+3.3V
R144
100k
C168
Z0.1u
C167
Z0.1u
C166
Z0.1u
C165
Z0.1u
C161
Z0.1u
C160
Z0.1u
C169
Z0.1u
C154
Z0.1u
C155
NC
( )
C156
NC
( )
C157
NC
( )
C158
NC
( )
C172 NC
( )
C173
NC
( )
C153
J27p
C159
J27p
C162 J27p
C171
J27p
R142
NC
( )
RA107
47
1
2
3
4
5
6
7
8
RA108
47
1
2
3
4
5
6
7
8
RA110
47
1
2
3
4
5
6
7
8
RA109
47
1
2
3
4
5
6
7
8
+3V/BAT
C170
NC
( )
1
VDD1
2
DQ0
3
VDDQ1
4
DQ1
5
DQ2
6
VSSQ1
7
DQ3
8
DQ4
9
VDDQ2
10
DQ5
11
DQ6
12
VSSQ2
13
DQ7
14
VDD2
15
LDQM
16
*WE
17
*CAS
18
*RAS
19
*CS
20
BA0
21
BA1
22
A10/AP
23
A0
24
A1
25
A2
26
A3
27
VDD3
28
VSS1
29
A4
30
A5
31
A6
32
A7
33
A8
34
A9
35
A11
36
NC1
37
CKE
38
CLK
39
UDQM
40
NC2
41
VSS2
42
DQ8
43
VDDQ3
44
DQ9
45
DQ10
46
VSSQ3
47
DQ11
48
DQ12
49
VDDQ4
50
DQ13
51
DQ14
52
VSSQ4
53
DQ15
54
VSS3
+5VD
C330
Z0.1u
C331
Z0.1u
C332
Z0.1u
C335
Z0.1u
C336
Z0.1u
C333
Z0.1u
C337
Z0.1u
C334
Z0.1u
+3.3V
C340
Z0.1u
C341
Z0.1u
+24V
C344
Z0.1u/50V
C345
Z0.1u/50V
C350
Z0.1u/50V
C351
Z0.1u/50V
C349
Z0.1u/50V
C348
Z0.1u/50V
C352
Z0.1u/50V
C339
Z0.1u
C338
Z0.1u
RESET
47
1
2
3
4
5
6
7
8
47
1
2
3
4
5
6
7
8
47
1
2
3
4
5
6
7
8
47
1
2
3
4
5
6
7
8
C178
Z0.1u
NC
( )
C177
Z0.1u
VDD18_1
L11
VDD18_2
L13
VDD18_3
L15
VDD18_4
N11
VDD18_5
N15
VDD18_6
R11
VDD18_7
R13
VDD18_8
R15
VDD33_1
B5
VDD33_2
C3
VDD33_3
C23
VDD33_4
E24
VDD33_5
AA2
VDD33_6
AC3
VDD33_7
AC23
VDD33_8
AD21
PLLPWR1
AB1
PLLPWR2
AC1
PLLPWR3
A24
PLLGND1
Y2
PLLGND2
Y5
PLLGND3
B20
RTCPWR
A22
PTCPWRCORE
A23
AFEPWR1
A4
AFEPWR2
C6
AFEGND1
E6
AFEGND2
D8
EVOLPWR
F4
EVOLGND
H4
DACPWR
C1
DACGND
E2
NC1
H6
NC2
AA6
NC3
AA20
NC4
F23
VSS1
D10
VSS2
D16
VSS3
F6
VSS4
F10
VSS5
F16
VSS6
F20
VSS7
G13
VSS8
K4
VSS9
K6
VSS10
K20
VSS11
K22
VSS12
L12
VSS13
L14
VSS14
M11
VSS15
M13
VSS16
M15
VSS17
N7
VSS18
N12
VSS19
N13
VSS20
N14
VSS21
N19
VSS22
P11
VSS23
P13
VSS24
P15
VSS25
R12
VSS26
R14
VSS27
T4
VSS28
T6
VSS29
T20
VSS30
T22
VSS31
W13
VSS32
Y6
VSS33
Y10
VSS34
Y16
VSS35
Y20
VSS36
AB10
VSS37
AB16
VSS38
AC12
VSS39
AC14
NC5
E3
NC6
E4
NC7
F5
NC8
F8
C125 K1u
C126 K1u
C127 K1u
C132
K1u
R143
10k
+24V
IC102
1
A15
2
A14
46
VSS2
47
*BYTE
3
A13
48
A16
4
A12
45
DQ15/A-1
5
A11
44
DQ7
6
A10
43
DQ14
7
A9
42
DQ6
8
A8
41
DQ13
9
A19
40
DQ5
10
A20
39
DQ12
11
*W
38
DQ4
12
*RP
37
VCC
13
NC
36
DQ11
14
VPP/*WP
35
DQ3
15
R*B
34
DQ10
16
A18
33
DQ2
17
A17
32
DQ9
18
A7
31
DQ1
19
A6
30
DQ8
20
A5
29
DQ0
21
A4
28
*G
22
A3
27
VSS1
23
A2
26
*E
24
A1
25
A0
C371
Z0.1u
+5VC
C372
Z0.1u
64Mbit
1.8V
(2)
(5)
(4)
(1)
(3)
IC103
IC101
IC100
RA111
RA113
RA112
RA114
IC104
KX-FL423RU-B / KX-FL423RU-W DIGITAL BOARD No.1 (2/2)
1
-2
2/2
6
KX-FL423RU-B / KX-FL423RU-W
[Changed from original section “16.2.2. DIGITAL BOARD (2)”]
+
-
C
E
B
A
D
F
3
2
4
5
+24V
CN105
1
POLCLK
2
XREADY
3
POLON
4
GND
5
+24V
+5VC
+5VD
+24V
Q203
Q206
+24V
F200
1.25A
CN106
1
COM
2
XB
3
XA
4
B
5
A
D200
Q212
+5VC
R238
1k(1608)
Q217
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
Q218
RMB
001:3D
CN101
1
XA
2
XB
3
B
4
A
R226
0(1608)
C216
NC
( )
R218
0.22(1/4W)
C212
NC
( )
+24V
R232
10k
C228
K1000p
C223
35V/100u/105
R224
39k
RMA
001:3D
XRMA
001:3D
XRMB 001:3D
R216
0.22(1/4W)
MMPWR2
001:3E
1
PGND1
2
IN2B
3
VREF2
4
CR2
25
FIN
21
OUT2A
17
RNF1
18
OUT1B
19
OUT2B
20
RNF2
13
IN1A
14
PGND2
15
VCC1
16
OUT1A
5
NC1
6
TEST
7
GND
8
PS
9
CR1
10
VREF1
11
IN1B
12
NC2
24
IN2A
23
NC3
22
VCC2
C219
NC
( )
C229
K1000p
R220
39k
MMENB 001:3E
R228
100k
C217
NC
( )
HTRCTL
001:3E
XAPC
001:2E
XVIDEO
001:2E
XLASERON 001:2E
XHSYNC
001:2E
POLCLK
001:2F
XREADY 001:3E
POLON
POLON
001:2F
TMA
001:3D
TMB
001:3D
TMPWR
001:3D
XTMA
001:3D
XTMB
001:3D
C221
Z0.1u/50V
C230
K0.1u
10
R227
300k
L205
2.2u
C231
K0.1u 10
C226
K0.1u10
R222
100k
R221
22k
R225
560k
C251
10u
6.3
C227
K0.1u
10
C239
4.7u
6.3
C252
10u
6.3
L204
2.2u
R223
330k
C240
4.7u
6.3
Q201
+1.8V
C224
Z1u
+5VD
C208
35V/100u/105
Q202
B
C
E
PDWN
001:3E
R206
120k
Q204
L200
C215
D10p
L201
L202
C203
K470p
50
C207
K470p
50
C200
K470p
50
C209
K470p
50
+3.3V
+1.8V
+3.3V
+3.3V
R239
1.5k 1/2W
D201
D202
L203
L206
C235
NC
( )
C247
NC
( )
HVERR
001:3D
TOPCVR
001:3E
Q208
B
C
E
C220
K470p
50
+24V
C211
K470p
50
C222
K470p
50
DEV
001:3F
C214
K470p
50
C218
K470p
50
CHG
001:3E
Q210
B
C
E
Q209
B
C
E
TRS
001:3E
+3.3V
+3.3V
R200
4.7k
R213
( )
NC
CN103
1
PWRDWN
2
+24V
3
+24V
4
PG
5
PG
6
DG
7
+5V
8
HTRCTL
C202
Z0.1u
C213
Z0.1u
C204
Z0.1u/50V
C206
Z0.1u/50V
C233
NC
( )
C244
NC
( )
C245
NC
( )
C234
NC
( )
R230
NC
( )
R229
NC
( )
R236
NC
( )
R204 100
R210
100
R212
100
R207
47k
R211
47k
C205
35V/100u/105
MMPWR1
001:3E
C243
NC
( )
C246
NC
( )
C237
NC
( )
C238
NC
( )
CN102
1
+24V
2
NC
3
GND
4
TOPCVR
5
CHG
6
DEV
7
TRS
8
HVERR
R237
NC
( )
1
CTLP
2
CTL2
7
3
CTL1
4
AGND
5
AVDD
6
VREF
8
9
10
11
12
13
LX1
14
DGND1_1
15
DGND1_2
16
DGND2_1
17
DGND2_2
18
LX2
25
FIN
24
23
22
21
20
19
C210
6.3V/330u
Q207
G
D
S
C236
Z0.1u
R201
47k
R202
47k
R231
F1.3k
R233
F15k
C201
1000p
50
R208
1M
R345
NC
( )
R347
NC
( )
R352
4.7k
R353
47k
AIN2
001:2E
+3.3V
C358
K1000p
C359
NC
( )
C360
NC
( )
C361
NC
( )
+5VD
( )
NC
3
1
4
( )
NC
2
GND
5
V+
C248
K1000p
50
R203 270
R205 180
CN104
1
GND
2
XVIDEO
3
XLDEN
4
XAPC
5
+5V
6
GND
7
XHSYNC
R234
F8.2k
R240
F820
R288
0
R289
0
R290
0
R291
0
R346
( )
NC
Q205
R214
3.3k
R209
24k
Q200
Q211
R217
10k
R215
1.8k
TO LASER
TO POLYGON
TO SMPS
TO SCAN MOTOR
TO ENGINE MOTOR
TO HVPS
1
R219
IC302
IC302
IC201
XPOR
DVDD2_1
DVDD2_2
OUT2
MODE2
VREFIN2
VDET
DVDD1_1
DVDD1_2
OUT1
MODE1
VREFIN1
IC200
KX-FL423RU-B / KX-FL423RU-W DIGITAL BOARD No.2 (1/2)
1/2
2
-1
7
KX-FL423RU-B / KX-FL423RU-W
C
E
B
A
D
F
6
5
8
7
Q215
R274
4.7k 1/4W
R279
10k
+24V
+5VD
Q225
CN114
1
+3.3V
2
TNREMP
3
GND
CISON
001:3D
FTG
001:2E
F1
001:2E
CISLEDON
001:3D
PICKUP
001:3D
TNREMP
001:2F
AIN2
001:2E
POUT
001:2F
TXD
001:2B
RTS
001:2B
RXD
001:2B
CTS
001:2C
AIN1
001:2E
+5VC
+3.3V
+3.3V
+3.3V
Q230
( )
NC
+3.3V
SENCTL0
001:2F
R287
180
Q228
( )
NC
+3.3V
REGIST
001:2F
SENCTL1
001:2F
R282
5.6k
+5VC
R252
NC
( )
C257
Z1u
Q220
( )
NC
5CTL
001:3D
+5VD
R275
39 1/2W
R270
10k
R269
10k
+24V
CN113
1
GND
2
FANDET
3
FANON
R268
4.7k 1/4W
R267
4.7k 1/4W
Q224
Q223
FANON2
001:3D
FANDET
001:3D
FANON1
001:3D
R247
3.3k
R241
4.7k
C271
Z0.1u
C241
Z0.1u
C263
K1000p
C267
K1000p
C265 K1000p
C264
NC
( )
C266
NC
( )
C268
NC
( )
C262
K1000p
C249
J180p
C250 J180p
R272
100
R245
100
R246
100
R271
1k
R285 10k
R243
2.2k
R244
NC
( )
R242 4.7k
R276
5.6k
R277
5.6k
R284
56k
+3.3V
+3.3V
PICK
003:7C
D203
C270
35V/100u/105
+3.3V
R278
56k
R286
56k
RA115
47k
1
2
3
45
6
7
8
+3V/BAT
R280 470 1/2W
R283
470 1/2W
Q226
+24V
R250
NC
( )
+24V
Q219
( )
NC
24CTL
001:2F
R255
0
R251
NC
( )
NC
( )
1
2
3
G
4
S
5
6
(
)
NC
R248
NC
( )
R249
NC
( )
CN107
1
SIG
2
GND
3
3.3V
4
SI
5
CLK
6
GLED
7
VLED
CN112
1
+3.3V
2
REGIST
3
GND
4
+3VBAT
CN111
1
THRM1
2
GND
3
LED
4
POUT
R354
0
L208
C365
Z0.1u
C363
100p
C362
100p
CN109
1
+5V
2
TXD
3
RXD
4
RTS
5
CTS
6
DSR
7
DTR
8
GND
R266
1k
KSTART
001:2E
KTXD
001:2E
C259 K1000p
R254
56k
C261 K1000p
+3.3V
R265
F24k
R256
100
C260
K1000p
C255
Z0.1u
L207
R259
180
R262
0
+5VD
R264
0
R258
100
OPERST
001:3E
KSCLK
001:2E
+3.3V
AIN3
001:2E
RPS
001:2E
R260
1k
C269
K1000p
C366
NC
( )
C367
K1000p
C258 K0.01u
+3.3V
C368 100p
+5VC
C272
NC
( )
R273
F1.6k
R292
F4.3k
+3.3V
R293
NC
( )
C253
NC
C242
NC
( )
R261
0
R257
100
C256
J100p
JOGA 001:3F
JOGB 001:3F
+3.3V
CN110
NC1
NC1
NC2
NC2
1
RPS
2
THRM2
3
KSTART
4
KTXD
5
KSCLK
6
OPERST
GND
+5V
NC
( )
NC
( )
R294
0
R281
0
R361
NC
( )
R362
NC
( )
C369
10k
C370
10k
Q214
Q227
Q229
TO CIS
TO PICK UP
TO SENSOR(DRUM)
REGIST
SENSOR
SENSOR
TO SENSOR
(PAPER OUT)
(PAPER OUT)
TO FLASH
PROGRAMMER
PROGRAMMER
TO FAN
TO OPE
Q221
Q222
D1
D3
D4
D2
7
8
R363
R364
( )
2
-2
KX-FL423RU-B / KX-FL423RU-W DIGITAL BOARD No.2 (2/2)
2/2
8
KX-FL423RU-B / KX-FL423RU-W
[Changed from original section “16.2.3. DIGITAL BOARD (3)”]
+
-
C
E
B
A
D
F
3
2
4
5
+3.3V
DG
CIDENB
001:3E
MDMTXEN
001:3E
C317
K0.1u
K0.1u
10
C316
K0.1u
10
HSRXEN
001:3E
MDMRXEN
001:3E
R322
6.8k
DG
R320
560k
+6VA
IC107
3
2
1
C305
K2200p
50
50
TONE
001:2E
Q301
( )
NC
R305
NC
( )
C322
NC
( )
R326
NC
( )
R308
NC
( )
TONE_LN_ENB
001:3E
C309 K2200p 50
R328
3.3M
R327
27k
IC107
4
V-
8
V+
R307
82k
C308 10u 16
+6VA
DG
+24VA
R313
2.7k
DG
+3.3V
AFECLK
001:2D
ATXD
001:2D
ASPCLK
001:2D
AFERST
001:2D
C318
K0.1u 10
DG
C314
K0.1u 10
DG
DG
C301
K0.1u 10
+3.3V
DG
R321
47k
R303 47k
DG
DG
ARXD
001:2D
R304
22
R316
22
ABITCLK
001:2D
EVOLIN
001:2D
EVOLOUT
001:2D
C319 22u 6.3
C302
22u 6.3
R306
220k
C304
K0.1u
10
C321
K0.1u
10
C324 K0.1u 10
C325
22n
16
C311
J68p
50
C306
K220n
6.3
DG
+24V
Q300
+24VA
R300
10k
C315 NC
( )
DG
Q302
R318
10k
DG
DTMFSPENB
001:3D
C312
K0.01u
16
R309
NC
( )
R319
NC
( )
R325
NC
( )
R330
NC
( )
C307
NC
( )
C313
NC
( )
C320
NC
( )
C323
NC
( )
R310
NC
( )
R324
NC
( )
Q303
NC
Q304
( )
NC
DG
TAMSPENB
001:2D
DG
DG
MDMMICIN
001:2D
C300 Z0.1u 50
R323
2.7k
R317
1.2k
R314
560k
R315
22k
L301
L302
L303
R356
150
R357
150
R358
150
R355
150
IC300
1
VND1
2
VPD1
9
*RST
3
GPIO0
4
GPIO1
5
GPIO2
6
GPIO3
7
*FS
8
SCLK
10
VPA
11
TXAN
12
TXAP
13
VREF
14
RXAN
15
RXAP
17
VNPLL
18
OSCOUT
19
OSCIN
20
VPPLL
21
CLKOUT
22
VND2
23
GPIO4
24
GPIO5
26
N/C
27
TYPE
28
SckMode
29
SDIN
30
GPIO6
31
GPIO7
32
SDOUT
33
GND
16
VNA
25
VPD2
R360
22
IC301
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
R329
22k
C303
Z0.1u 50
C310
J100p 50
L305
R311
22k
R312
820k
1
( )
(8)
(6)
(5)
(4)
(7)
(1)
(2)
(3)
1/2
3
-1
KX-FL423RU-B / KX-FL423RU-W DIGITAL BOARD No.3 (1/2)
MONITOR
Caller ID
Tone
HS TX
HS RX
FAX-TX
FAX-RX
Click on the first or last page to see other KX-FL423RU (serv.man2) service manuals if exist.