Read Panasonic KX-MB283RU / KX-MB783RU (serv.man3) Service Manual Supplement online
34
KX-MB283RU/KX-MB783RU
3.4.3.
MAIN BOARD (3)
[Changed from original section “16.3.3. MAIN BOARD (3)”]
1/2
3
-1
KX-MB783RU SCHEMATIC DIAGRAM (MAIN BOARD No.3) (1/2)
C
E
B
A
D
F
3
2
1
5
4
CN501
AP1
1
POLCLK
2
XREADY
3
POLON
4
GND
5
24V
CN502
AP1
1
24V
2
24V
3
PG
4
PG
5
LD
6
SS
7
CLK
8
BRAKE
CN506
AP1
1
GND
2
DET
3
FANON
CN507
AP1
1
PICK
2
PG
CN514
AP1
1
REG
2
PG
TNR
1:5J
POUT
1:5J
THRMSTR1
1:2J
REGIST
1:5I
PICK
1:5I
FANDET2
1:5J
FANON2
1:2H
FANDET1
1:5J
FANON1
1:2H
SNREG
1:5H
SNPICK
1:5G
CHG
1:5G
DEV
1:5G
TRS
1:5G
HVERR
1:5H
TOPCVR
1:5K
HTRCTL
1:2J
MMB
1:2G
MMXA
1:2G
MMA
1:2G
MMXB
1:2H
NREADY
1:5I
POLCLK
1:5G
POLON
1:5G
Z0.1u/50V
C501
47k
R504
L502
56k
R512
1k
R515
K0.1u
C510
Z0.1u/50V
C503
35V/220u
C505
10u/6.3V
C512
4.7k
R519
3.3k R517
10k
R526
+24V
+24V
+24V
+24V
+7V
+3.3V
+3.3V
+3.3V
+24V
8.2k(2125)
R574
10k
R573
+24V
56k
R521
+3.3V
+24V
10k
R529
39(1/2W)
R525
5.6k
R531
K1000p
C517
Z0.1u/50V
C514
56k
R569
Z0.1u/50V
C560
K1000p
C559
5.6k
R570
10k
R566
+24V
39(1/2W)
R530
+3.3V +3.3V
3.3k
R578
+3.3V
5.6k
R580
K1000p
C563
22k
R582
5.6k
R583
K0.047u
C565
+3.3V
22k
R506
5.6k
R510
K0.047u
C508
F15k
R503
1k
R509
K1000p
C507
+5VD
56k
R523
5.6k
R527
K1000p
C516
+3.3V
+5VD
22k
R587
5.6k
R585
PSTART
1:5K
K0.047u
C569
4.7k
R524
10k
R522
Z1u
C513
CN505
AP1
1
CVR
2
HVERR
3
TRS
4
DEV
5
CHG
6
GND
7
24V
CN508
1
POUT
2
5V
3
THRM1
4
GND
5
FANON
6
FANDET
7
PICK
8
TNR
9
PTOP
10
REG
Z0.1u
C555
THRMSTR0
1:2J
K1000p
C548
( )
R591
NC
OPERST
1:5I
100
R559
KSCLK
1:5I
KSTART
1:5I
F18k
R564
+5VD
KTXD
1:5I
100
R563
J180p
C557
AP1
CN511
1
THRM
2
KSTART
3
KTXD
4
KSCLK
5
OPERST
6
GND
7
5V
8
BUZZER(NC)
+3.3V
1k
R562
DAOUT
1:2J;4:2H
1k
R561
180
R560
4.7k(3216)
R532
4.7k(3216)
R565
L503
15BD471
L500
AP1
CN500
1
XHSYNC
2
GND
3
5V
4
XAPC
5
XLDEN
6
XVIDEO
7
GND
100
R501
NHSYNC
1:5K
Z0.1u
C504
180
R511
100
R502
+5VD
4.7k
R518
NAPC
1:2I
NVIDEO
1:5H
D10p
C506
NLDEN
1:2I
39k
R528
AP1
CN504
1
HTRCTL
2
7V
3
GND
4
GND
5
GND
6
24V
7
24V
K1000p
C511
1k
R520
IC501
1
CONTROL
2
GND
3
NC
5
VIN
4
VOUT
(
)
C558
35V/100u/105
C518
35V/100u/105
C515
Q503
B
C
E
Q505
B
C
E
Q502
B
C
E
Q525
B
C
E
Q526
B
C
E
Q500
B
C
E
Q501
B
C
E
Q504
B
C
E
Q506
B
C
E
D501
AK
Q511
B
C
E
Q524
B
C
E
D503
AK
Q510
B
E
C
Q512
B
C
E
Q520
B
E
C
Q519
B
C
E
D504
AK
Q523
B
E
C
Q509
G
D
S
Q507
B
C
E
82k
R516
Q527
+1.2V
R810
NC
(
)
TO POLYGON
TO DC
MOTOR
MOTOR
TO SMPS
TO HVPS
PICK-UP
SOLENOID
SOLENOID
REGISTER
SOLENOID
SOLENOID
TO FAN
SENSOR Transit
TO OPE
TO LASER
XHSYNC
XAPC
XLDEN
XVIDEO
388ms
POLCLK
( 3.86kHz)
XREADY
POLON
LD
SS
CLK
BRAKE
KSTART
KTXD
KSCLK
625KHZ
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