Samsung ML-1430 Schematics Diagram
Repair Manual
Repair Manual
1. Block Diagram
2. Connection Diagram
3. Schematic Diagrams
CONTENTS
LASER PRINTER
ML-1430
Samsung Electronics Digital Printing
CS Group
Copyright (c) 2002. 4
This manual is made and
described centering around
circuit diagram
and circuit description needed
in the repair center
in the form of appendix.
1
1-1
Samsung Electronics
B LOCK DIAG R A M
Repair Manual
1. Block Diagra m
1.1 SPL Block Diagram(ML-1430)
MAIN
S3C46M0X
SDRAM
(8MB)
SMPS
Eng i ne
PANEL
B’ D
FLASH
MEMORY
(0.5MB)
POWER
CORD
+24V
MOTOR
FAN
EXI T
SE
N
SOR
HV PS
B’ D
MHV
OPC G ND
SUPPL Y
DEV
TH V
BUFFER
MHV PW M
BI ASPW M
THVPWM
POWER
SWITCH
IN-LET
LED
4
3
KEY
IEEE 1284 CABLE
VOL TAGE
DET ECT OR
Crystal
10MHz
Mai n
Clock
Osci l l a tor
44 MHz
Vi deo
Clock
PowerOnRe s e t
CPU
Jupiter3
US B
74LVX161284
Line
Tr a n s c e i v e r
PC
+5V
FS781BZB
SOLENOIDE
DEV_FUSE
LSU
2
2-1
Samsung Electronics
CONNECTION DIAG R A M
Repair Manual
2. Connection Diagra m
2.1 SPL Connection Diagram(ML-1430)
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
1
2
3
4
5
6
+24V_T
+24V GND
*PMOTOR
+3. 3V
EXT_CLK
*HSYNC
+5V
+5V GND
*LD_ON
VDO
+5V GND
LSU
POLYGON
MOTOR
LD DIO DE
+5V
+5V GND
LED_ERROR
LED_PAPER
LED_DAT A
LED_TONER
*KEY_TONER
*KEY_CANCEL
*KEY_DEMO
1
2
3
4
5
6
7
8
9
LED
DISPLAY
PANEL
1
2
3
4
5
6
7
8
9
1
2
+5V
PTL
PT L LED ARRAY
1
2
+24 V_T
+24 V GND
THV PW M
*THV_EA
TH VR E A D
*MHVPWM
BI ASPW M
+5V
+5V GN D
1
2
3
4
5
6
7
8
9
HV PS
1
2
3
4
5
6
7
8
9
THERM_A
THERM_B
1
2
1
2
THERMI STO R
+24 V
+24 VS
1
2
3
1
2
3
COVER
SW I TCH
+5V
*P EM PT Y
1
2
3
4
1
2
3
4
*FEED
+5V GND
SENSOR
BOAR D
36
PI N
HO ST
COMPUTER
IEEE1284
COMPATI ABLE
CABLE
J1
CN9
CN7
CN11
CN1 2
CN13
CN6
CN8
CN5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SMPS
+5VGND
+5V
+5V GND
+5V
+5V GND
+5V
+24V GND
+24V
+24VS
+24V GND
+24V
+24V GND
+24V
EX IT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
FUSER O N
17
18
19
20
21
22
23
24
ENGINE
+24VS
FA N
DEV_ FUSE
*NEW_DEVE
*
EGMOT _ A1
EGM OT_PHA
*EGMOT_B1
EGMOT_PHB
4PI N
CON NECT O R
for
USB
USB CABLE
CN3
DCU
CN
1
+5V
DCU_DATA
1
2
3
4
1
2
3
4
DCU_CL K
+5V GND
Not Use d
ENGINE + SMPS
B
Unification
’d
CLUTCH
SOL E -
NOID
CN1
DEV_ FUS E
CN3
CN4
FAN
FUSER
CN502
ST EP-
PI NG
M
O
TO R
CN2
CN5
Main
Board
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