Panasonic KX-MB283BR Service Manual page 205

15.2.3. MAIN BOARD (3)
1
180
R511
GND
7
A
XVIDEO
6
100 R501
XLDEN
5
R502
100
XAPC
4
5V
3 C504
GND
2
Z0.1u
XHSYNC
1
AP1
CN500
TO LASER
XHSYNC
+24V +3.3V
CN501
AP1
C501 Q503
1
C
POLCLK
B
Z0.1u/50V
2
XREADY
E
3
POLON
4
GND
5
24V
TO POLYGON
CN502
AP1
L502
1
24V
2
+3.3V
24V
3
PG
4
PG
5
LD
6
C
B
C SS
7 C
Q502
E
CLK
8
BRAKE E
TO DC
MOTOR
LD
SS
CLK
BRAKE
+24V
24V
7
24V
6
GND
5
GND
+7V
D 4
GND
3
7V
2
Q500
C
HTRCTL
1
B
AP1
E
CN504
TO SMPS
+24V
E
24V
7
GND
6
L503
CHG
5
DEV
4 C
B
TRS
3
E
Q501
HVERR
2
CVR
1
AP1
CN505
TO HVPS
F
2
L500
1:5H
15BD471
+5VD
1:2I
1:2I
1:5K
XVIDEO
388µs
XLDEN
XAPC
1:5I
1:5G
B
Q505
C
1:5G
B
E
POLCLK
( 3.86kHz)
XREADY
POLON
+24V
1k R515
1:2G
1:2G
1:2G
B
Q525
Q526
C
1:2H
B
E
+5VD
IC501
CONTROL
5 1
VIN
2
GND
4 NC 3
VOUT
1:2J
HTRCTL
C
1:5G
B
+3.3V
C E
Q506
1:5G
B
E
Q504
1:5G
R520
1:5H
1k
1:5K
C
82k R516
B
E
Q507
KSTART
KTXD
KSCLK
3
PICK-UP
NVIDEO SOLENOID
CN507
AP1
NLDEN
1
PICK
NAPC
2
PG
NHSYNC
REGISTER
SOLENOID
CN514
AP1
1
REG
NREADY
2
PG
POLCLK
POLON
+3.3V
TO FAN
FANON
3
DET
2
GND
1
AP1
CN506
MMB
MMXA
MMA
MMXB
SENSOR Transit
+3.3V
REG
10
PTOP
9
TNR
8
PICK
7
FANDET
6
FANON
5
GND
4
+5VD
THRM1
3
5V
2
POUT
1
CN508
CHG
+3.3V
TO OPE
DEV
CN511
TRS
AP1
1
THRM
HVERR
2
TOPCVR
KSTART
3
KTXD
C557
4
KSCLK
5
OPERST
J180p
6
GND
C555
7
5V
Z0.1u
8
BUZZER(NC)
292161-8
KX-MB283BR SCHEMATIC DIAGRAM (MAIN BOARD No.3) (1/2)
625KHZ
205
4
+24V
S
R528
Q509
Q511
G
39k C
D
1:5G
B
E
+24V
Q523
R574
E
B
Q524
8.2k(2125) C
C 1:5H
B
E
+24V
Q510
R532
E
B
Q512
C
4.7k(3216)
C
1:2H
B
R525
E
R531 1:5J
39(1/2W)
5.6k
+3.3V
5.6k
R583
5.6k
R585
R527
5.6k
+24V
+3.3V +3.3V
E
Q520
C
R530
39(1/2W)
R570
5.6k
+3.3V
R562 1k
1:2J
THRMSTR0
R563 100 1:5I
KSTART
R559 100 1:5I
KTXD
R560 180 1:5I
KSCLK
R561 1k 1:5I
OPERST
+5VD
R591 1:2J;4:2H
DAOUT
0
KX-MB283BR
5
1/2
3
-1
SNPICK
SNREG
FANON1
FANDET1
1:5I
REGIST
1:5K
PSTART
1:5J
TNR
R565
B
Q519
4.7k(3216)
C
1:2H
B
FANON2
E
1:5J
FANDET2
R580
1:5I
PICK
5.6k
R509 1k
1:2J
THRMSTR1
R510
1:5J
POUT
5.6k