Read Panasonic KX-FL423RU (serv.man2) Service Manual Supplement online
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
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