![background image](http://html.mh-extra.com/html/panasonic/kx-mb1520fx7/kx-mb1520fx7_service-manual_275220264.webp)
264
KX-MB1520FX7/KX-MB1520FX8/KX-MB1520FXW/KX-MB1530FX7/KX-MB1530FXW
16.2.2. Main Board (2)
(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)
+
-
+
-
C
E
B
A
D
F
3
2
1
5
4
AFEADC[1]
AFEADC[2]
AFEADC[3]
TNR
1:3E
REGIST
1:3E
CHG
1:3D
DEV
1:3D
TRS
1:3D
TOPCVR
1:3F
NREADY
1:3E
POLCLK
1:3D
POLON
1:3D
R504
47k
R526
10k
+24V
+24V
+24V
+24V
+3.3V
+24V
R573
10k
+24V
R582
22k
R583
5.6k
R523
56k
R527
5.6k
R587
22k
R585
5.6k
PSTART
1:3F
R544
1.2k
THRMSTR0
1:1E
R555
4.7k
NCCDON
1:6B
OPERST
1:3E
+3.3V
R550
1.2k
KSCLK
1:3E
KSTART
1:3E
R564
F18k
+5VD
KTXD
1:3E
+3.3V
R562
1k
R560
180
L500
15BD471
R501
100
NHSYNC
1:3F
R511
180
R502
100
+5VD
R518
4.7k
NAPC
1:1E
NVIDEO
1:3D
NLDEN
1:1E
R552
1k
+1.2V
R571
560
R586
NC
( )
+3.3V
+3.3V
R579
470
HTRCTL
1:1E
THRMSTR1
7D;1:1E
+3.3V
R567
10k
R528
3.3k(2125)
IC504
5
6
7
XSYSRST
1:2F;1:5C;1:7B
R559
100
R563
100
R561
1k
R577
1k
R553
82
C547
J100p
C540
K0.1u
C543
K0.1u
C542
K0.1u
C536
K0.1u
C537
K0.1u
C516
K1000p
C551
K1000p
C548
K1000p
C553
K1000p
C554
K1000p
C546
K0.01u
C544
K0.01u
C503
Z0.1u(1608)
C501
Z0.1u(1608)
C545
K1u
C565
K0.047u
C569
K0.047u
C506
D10p
C557
J180p
IC503
1
AGND2
2
DVDD1
18
VRX
19
VRLC/VB
3
VSMP
20
VINP
4
MCLK
17
VRT
5
DGND
16
VRB
6
SEN
15
AGND1
7
DVDD2
14
AVDD
8
SDI
13
OP3/SDO
9
SCK
12
OP2
10
OP0
11
OP1
+24V
CN511
AP1
292161-9
1
THRM
2
KSTART
3
KTXD
4
KSCLK
5
OPERST
6
GND
7
5V
8
MIC+
9
MIC-
R618 10k
R621
10k
C610 K0.1u
C608
K0.1u
C607
K0.1u
C609
Z0.1u(1608)
C605
Z0.1u(1608)
MIC+
3:9C
MIC-
3:9D
RESOLUTION
1:6A
+3.3V
OPC_CNTCT
1:3F
R608
47k
DRUM_LIFE
1:3F
VFUSECUT
1:3D
+3.3V
C600
K1000p
R522
220(1/2W)
R524
220(1/2W)
C552
Z0.1u(1608)
R620
10k
+24V
D600
R612
33k
+5VD
R611
18k
R546
100k
R554
100k
R556
120(3216)
R570
100(3216)
R569
100(3216)
R572
100(3216)
C539
K1000p
C541
K1000p
R610
47k
R604
4.7k
C614
K1000p
+5VD
C504
K1u
+5VD
R602
47k
R606
4.7k
R609
120(3216)
+3.3V
R520
3.3k
R615
47k
C570
K0.1u
+5V
CN508 AP1
1
5VLD
2
-
3
5V
4
REG
5
PTOP
6
GND
7
BATTERY
8
TNR
+3.3V
BATTERY
1:5E
CN501
AP1
1
POLCLK
2
XREADY
3
POLON
4
GND
5
24V
CN504
AP1
1
-
2
HTRCTL
3
5V
4
GND
5
GND
6
24V
7
24V
PWRDWN
1:1D
R614
F0.18(3216)
R613
F0.18(3216)
C604
35V/100u
R574
10k(1608)
DA500
2
1
3
C571
K0.1u
+1.2V
C572
K1u
Q530
Q527
R576
1k
R535
10k
C612
K0.22u(1608)
CN510
1
B
2
R
3
G
4
VLED
5
CLK
6
DG
7
SI
8
CNT
9
VREF
10
3.3V
11
DG
12
SIG
C555
K0.1u
C611
K0.1u
R584
F15k
R581
F2.74k
C500
6.3V/100u
C505
35V/100u
C549
6.3V/100u
C550
35V/47u
R626 220k
R619
47k
R623
F150k
C613
35V/100u
R622
33k
Q609
B
R629
47k
R627
47k
R616
39(1/2W)
Q603
B
E
C
+24V
Q607
B
E
C
R630
12k(1608)
Q606
B
E
C
IC504
3
2
1
R580
22k
R594
100k
R534
470k
Q529
Q518
Q523
R607
2.2k(1608)
R601
75(1/2W)
Q604
Q605
CN505
AP1
1
F-USE
2
TRS
3
DEV
4
CHG
5
GND
6
HVFUSE
7
-
8
24V
R624
F22k
CN502
AP1
1
SNPICK
2
SNREG
3
GND
4
2B
5
2A
6
1A
7
1B
CN500 AP1
1
5V
2
GND
3
XHSYNC
4
XVIDEO
5
XLDEN
6
XAPC
7
GND
Q600
Q509
R645
220k
Q608
B
C
E
R642
56k
R639
56k
Q610
B
E
C
+3.3V
R628
560k
R634
47k
R636
6.8k
Q517
B
C
E
Q516
B
C
E
Q514
B
C
E
Q504
B
C
E
Q524
B
C
E
Q501
B
C
E
Q500
Q602
B
C
E
Q505
B
C
E
Q503
B
C
E
Q506
B
C
E
Q511
B
C
E
Q520
C601
K1000p
C606
K1000p
C603
K1000p
C602
K1000p
IC600
1
OUT2B
2
ENABLE
7
VREG
3
GND1
4
CP1
5
CP2
6
VCP
8
MS1
9
MS2
10
RESET
11
ROSC
12
SLEEP
13
VDD
14
STEP
15
REF
16
GND2
17
DIR
18
OUT1B
25
GND3
24 VBB2
23 SENSE2
22 OUT2A
21 OUT1A
20 SENSE1
19 VBB1
CN506
1
GND
2
FANON
C621
C620
( )
( )
C616
10u/10V
C615
K1000p
Q611
R633
150k
R638 47k
R632
470k
R643
470k
R631
270k
R549
82(3216)
R543
82(3216)
R519
10k
C519
K0.1u
R521
100
C521
K0.01u
R595
F270k
R596
F330k
R641
560k
R640
47k
+5VD
R625
F10k
R617
F56k
R600
75(1/2W)
TO GEAR
TO SMPS
TO HVPS
TO OPE
TO CIS
TO LSU
TO Interlock
TO FAN
KX-MB1520FX MAIN BOARD (No.2) (1/2)
1/2
2
-1
SI
1.32ms
CLK
4.46MHz
Summary of Contents for KX-MB1520FX7
Page 52: ...52 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 6 10 3 5 Waveform ...
Page 56: ...56 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 68: ...68 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 75: ...75 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW wave form ...
Page 77: ...77 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW wave form ...
Page 100: ...100 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 10 1 2 Button Code Table ...
Page 108: ...108 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW KX MB1530 ...
Page 141: ...141 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 12 3 8 3 Skew ...
Page 147: ...147 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 12 3 9 2 Skew ADF ...
Page 159: ...159 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 161: ...161 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 166: ...166 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 167: ...167 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...
Page 175: ...175 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Toner detection flow ...
Page 188: ...188 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 2 CHG 3 TRA ...
Page 189: ...189 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 4 DEV DC ...
Page 190: ...190 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 5 DEV AC ...
Page 191: ...191 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 6 TRA ...
Page 218: ...218 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 14 10 How to Remove LVPS ...
Page 236: ...236 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 14 24 7 Fuser section ...
Page 255: ...255 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW 15 6 1 NG Example ...
Page 258: ...258 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Memo ...
Page 263: ...263 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Memo ...
Page 271: ...271 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Memo ...
Page 288: ...288 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Memo ...
Page 294: ...294 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW Memo ...
Page 395: ...395 KX MB1520FX7 KX MB1520FX8 KX MB1520FXW KX MB1530FX7 KX MB1530FXW ...