Samsung SF-830 Service Manual Page 131
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3
3-1
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
3. Circuit Description
3-1 Main PBA
3-1-1 SUMMARY
The main circuit that consists of CPU, MFP controller (built-in 32bit RISC processor core: ARM7TDMI) including various I/O
device drivers, system memory, scanner, printer, motor driver, PC I/F, and FAX transceiver controls the whole system. The
entire structure of the main circuit is as follows :
OSC
20 MHz
POWER
ON RESET
MODEM
CIP3
OSC.(Video)
45.3928 MHz
LIU
OSC.
48 MHz
USB
INTERFACE IC
(UNICON)
USB
RTC
PARALLEL
INTERFACE
OPE PANEL
INTERFACE
PROGRAM
ROM
1MB x 4EA
SRAM
256K
DATA RAM
(DRAM)
8MB x 2EA
DATA RAM
(DRAM)
2MB x 2EA
PLL
Reset & WDT
Generation
ARM7TDMI
Cache 8KB
ROM/SRAM/
FLASH ROM
Control
(4 Bank)
I/O
Control
(5 Bank)
CPU BUS
Interface Block
GPIO
SYSTEM BUS
Interface Block
[Arbiter]
VIS
ADC
RAM : 512B
UART
(3 CH)
Interrupt
Control
(4 External)
Timer
(3 CH)
Tone
Generator
Engine
Comm. I/F
JBIG
LRAM:1296B
CXRAM:256B
RAM
512B+512B
HPVC
PPI
PVC
GEU
EDO/FPM
DRAM
Control
(4 Bank)
MA
MD
RAS
CAS
/CS,/RD,/WR
A/D BUS
IOCS
PM-22
DMAC
(2 CH)
HCT
IMCS
/MIR0,
/RD,/WR
D0~D7
A0~A4
RST_OUT
/RST_OUT
/XDACK
/XDREQ
/SDIP CS
/RD,/WR
D0~D15
A0~A5
ID01 ~ ID15
OD0 ~ OD15
RA0 ~ RA15
/CS
CLOCK
/RD
NOR
• Main B’D
<Block Diagram>
- This Document can not be used without Samsung's authorization -
- Digital Laser MFP 1
- ELECTRONICS 2
- This manual is stated and 3
- Contents 4
- Samsung Electronics2 5
- 1. Precautions 7
- 1-2 ESD Precautions 8
- 2. Specification 10
- 2-3 Facsimile Specification 11
- 2-4 Scanner Specification 12
- 2-5 Copy Specification 12
- 2-6 Telephone Specification 13
- 2-7 Consumables 13
- Disassembly and Reassembly 14
- Cover Rear Ass’y 15
- 3-4 Scanner Ass'y 16
- 3-5 OPE Ass'y 17
- Link Tray 18
- Cover Gear 18
- ADF Upper Ass’y 18
- Guide Lower Ass’y 19
- Housing Upper ADF 19
- FFC Cable 20
- Exit Roller 20
- Cover Switch 21
- 3-9 Side Cover Ass'y 22
- * MP-Tray 22
- Deplex Ass’y 23
- Halogen Lamp 24
- Thermostat 24
- Heat Roller 24
- 3-11 Exit Ass'y 25
- Cover Paper Exit Ass’y 26
- 3-13 Drive Ass'y 27
- 3-14 SMPS 28
- 3-15 LSU 29
- 3-16 Main Frame Ass'y 30
- * Cover Exit Rear 31
- * MP Ass'y 32
- * Feed Ass'y 33
- * Pick Up Ass'y 33
- * Main PBA 34
- Main PBA 34
- 3-17 SCF Ass’y 35
- Motor Ass’y 36
- 8P Harness 36
- 4-1 Preventative Maintenance 38
- 4-2 Error Messages 39
- Samsung Electronics 4-3 40
- 4-3 User Mode 41
- 4-4 Tech Mode 42
- SETUP : #, 1, 9, 3, 4) 43
- 4-4-3 SYSTEM DATA 44
- 4-4-4 MEMORY CLEAR 44
- ADJUST SHADING 45
- Troubleshooting 46
- < SYSTEM DATA LIST > 46
- 4-4-6 REPORT/HELP 48
- 4-4-7 Firmware Upgrade 49
- 4-5 Identify Sale Date 50
- 4-6-2 Diagnostic 51
- 4-6-3 ENGINE PRINT 51
- 4-7-1 Print Quality 52
- Digital Printer 53
- No Image 55
- All Black 57
- Vertical White Line (Band) 58
- Dark Image 59
- Background 60
- Samsung Electronics 4-24 61
- Black Spot 62
- Horizontal Band 63
- Irregular Density 64
- White Spot 65
- Poor Fusing Grade 67
- 4-7-2 Malfunction 68
- Fuser Error 71
- Paper Jam (Mis-Feeding) 72
- Paper Jam(Jam 1) 73
- Engine Error 74
- 4-7-4-3 Abnormal Printing 80
- 4-7-4-4 SPOOL Error 80
- Samsung Electronics 5-1 81
- Main Parts List 84
- Main Parts List (Cont.) 85
- Samsung Electronics 5-5 86
- Scanner Ass’y Parts List 87
- Samsung Electronics 5-7 88
- ADF Upper Ass’y Parts List 89
- Samsung Electronics 5-9 90
- Scan Lower Ass’y Parts List 91
- Samsung Electronics 5-11 92
- OPE Ass’y Parts List 94
- Side Cover Ass’y Parts List 96
- Cassette Ass’y Parts List 98
- Exit Ass’y Parts List 100
- Samsung Electronics 101
- Feeder Ass’y Parts List 102
- MP Ass’y Parts List 104
- Base Frame Parts List 105
- Pick-up Ass’y Parts List 106
- Drive Ass’y Parts List 108
- Main Frame Ass’y Parts List 110
- Fuser Ass’y Parts List 112
- SCF Ass’y Parts List 114
- NO SEC CODE DESCRIPTION SPEC 115
- Samsung Electronics 5-35 116
- 6. Block Diagrams 118
- 7. Connection Diagrams 119
- 8. Dual Line Option 120
- 8-4-2 Dual Line Board error 122
- 8-4-3 Modem interface error 123
- 8-4-4 LIU interface error 124
- Repair ManualRepair Manual 126
- Copyright (c) 2002. 02 128
- 1. Block Diagram 129
- 2. Connection Diagram 130
- <Block Diagram> 131
- 3-2 Circuit Operation 132
- 3-2-1 CLOCK 132
- 3-2-2 POWER ON/OFF RESET 132
- 3-2-3 RISC MICROPROCESSOR 133
- CIRCUIT DESCRIPTION 134
- Repair Manual 134
- 3-2-5 DRAM CONTROL 142
- 3-2-5-3 EDO DRAM read timing 145
- 3-2-9-1. GENERAL 147
- 3-2-9-2. MODEM (U39) 147
- 3-2-10-1 Block Diagram 148
- 3-2-10-2 Specifications 149
- < DC Characteristics > 150
- 3-3 Scanner 153
- 3-3-1 SUMMARY 153
- 3-3-2 KEY FEATURES 154
- D OCU MENT IMAGE 155
- <Block diagram of CIP3> 156
- 3-4 HOST INTERFACE: 157
- 3-4-1. HOST INTERFACE 157
- 3-4-2-1 Features 159
- 3-5 Engine Controller 161
- 3-5-2. PAPER SENSING CIRCUIT 161
- 3-5-3. LSU CIRCUIT 161
- 3-5-7-1. Summary 162
- 3-6 OPE PBA 168
- 3-6-1 SUMMARY 168
- <OPE BLOCK DIAGRAM> 168
- 3-7 LIU PBA 169
- 3-7-1. SUMMARY 169
- 3-7-2. DC MATCHING PART 169
- 3-7-3. AC MATCHING PART 169
- 3-7-4. DIALER PART 169
- 3-7-5. RING DETECTION PART 170
- 3-8-1 SMPS SPECIFICATIONS 170
- 3-8-2 AC INPUT STAGE 171
- <Inductive Circuit> 172
- 4. Schematic Diagrams 173
- Main Circuit Diagram (2/17) 174
- Main Circuit Diagram (3/17) 175
- Main Circuit Diagram (4/17) 176
- Main Circuit Diagram (5/17) 177
- Main Circuit Diagram (6/17) 178
- Main Circuit Diagram (7/17) 179
- Main Circuit Diagram (8/17) 180
- Main Circuit Diagram (9/17) 181
- Main Circuit Diagram (10/17) 182
- Main Circuit Diagram (11/17) 183
- Main Circuit Diagram (12/17) 184
- Main Circuit Diagram (13/17) 185
- Main Circuit Diagram (14/17) 186
- Main Circuit Diagram (15/17) 187
- Main Circuit Diagram (16/17) 188
- Main Circuit Diagram (17/17) 189
- ARS1-3 : OPTION 190
- *: for EU PTT 190
- 4-3 OPE Circuit Diagram 191
- 4-4 Scan Circuit Diagram 192
- 4-5 Sensor Circuit Diagram 193
- DOCUMENT DETECT B D 193
- 4-6 HVPS Circuit Diagram(1/2) 194
- HVPS Circuit Diagram(2/2) 195
- SCHEMATIC DIAGRAMS 196
- SMPS Circuit Diagram(220V) 197
- 4-8 PTL Circuit Diagram 198
- 4-10 Toner_Rx Circuit Diagram 199
- 4-11 Toner_Tx Circuit Diagram 200
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