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Samsung Electronics 8-3
8-3 Video Controller Block Diagram
Video Controller Board Block Diagram
ROM
72PIN SIMM
29F800
8Mbit Flash Memory
29F800
8Mbit Flash Memory
Mask Font ROM
KM23C8105DG
Mask Font ROM
KM23C8105DG
RD_FLASH
WR_FLASH1,2,3
*
4
3
RCS(0:3)
4
2
74F32
74F04
nWR
F_WR_E
DRAM
72PIN SIMM
72PIN SIMM
64Mbit DRAM
KM416C4104BS-5
64Mbit DRAM
KM416C4104BS-5
Memory Data Bus
DRAMD(0:31) 32
Memory Address Bus
DRAMA(0:11)
11
nDRAMCAS(0:3)
nDRAMRAS(0:3),nDRAMWE
9
4
EIRQ(0:3)
6
nIOCS(0:5)
*
*
74F14
RESET
*
TL7705
Supply
Voltage
Supervisor
ACK
,BUSY,SELECT,ERROR,FAULT
*
SELIN
STROBE
AUTOFD
INI
*
*
*
*
5
4
8
PD(0:7)
Centronics Connector
Engine I/F Connector
PANEL 20Pin
LCD Display Panel
Engine Controller B’d
Computer
SPGP1
32
ADDR(2:22)
21
A20
DATA(0:31)
ADDR(0:31)
DATA(0:31)
Regulator
3.3V
22
32
32
CPU
POWER PC
MPE603E
100MHz
TS
,TT1,nTSBT,TSIZ(0:2)
*
nTA,RST
*
,INT
*
,nTS,nBG
SYSCLK
FS741
Frequency
Scaling EMI
Attenuator
OSC-CLOCK
50MHz
ADDR(2:11)
10
DATA(24:31)
8
IOCSO,nRD,nWR
3
Video (Data)
*
nLSYNC
VCLK
RST
*
*
ASIC
(Hyper)
nFSYNC
OSC-CLOCK
78.45496MHz
nWAIT
nWR
nRD
INT
*
nRD
nWR IOCSO
74F32
DATA(0:15)
DATA(0:15)
16
16
ADDR(2:18)
DATA(16:31)
nWAIT
C
o
n
n
e
c
t
o
r
74ACT245
Transceiver
74HCT273
D Flip-Flop
nRD
nWR
TT1
BRDIN
IOCS1
IOCS2
EIRQ2
*
93C66
4Mbit
serial
EEPROM
3
9
8
DATA(24:31)
8
IOCS3,EIRQ1
ADDR4,5,15
nRD,nWR
USB_RST
,V_BUS
*
Co
nn
ec
to
r
OPTION
Net
Work
Card
OPTION
Local
Talk
&
Serial
OPTION
IrDA
&
Serial
- ML-7300 Series 1
- ELECTRONICS 2
- Contents 3
- 9. PCB Diagrams 5
- Circuit Description 5
- 11. Schematic Diagrams 5
- 1. Precautions 6
- 2. Reference Information 7
- Table 2-2. Acronyms 8
- 2-2. Diagnostic Control Unit 9
- Samsung Electronics 10
- Samsung Electronics 2-5 11
- 3 Product Information 13
- 3-2 Controller Specification 14
- 3-3 Electrical Specification 14
- 3-4 Environmental Condition 15
- •Input Paper Size 16
- •Feed capacity 16
- Item Description 16
- 4. Disassembly 17
- 4-3 Cabinet Disassembly 18
- Disassembly 19
- Cover Right to the backward 19
- Samsung Electronics4-4 20
- Samsung Electronics 4-5 21
- Samsung Electronics4-6 22
- Samsung Electronics 4-7 23
- Samsung Electronics4-8 24
- 4-5 Fuser Ass’y 25
- < Fuser Ass’y > 26
- Samsung Electronics 4-11 27
- < Bracket Motor Ass’y > 28
- Samsung Electronics 4-13 29
- 4-7 Pickup Ass’y 30
- 4-8 Laser Scanner Unit 31
- Samsung Electronics4-16 32
- 4-9 Multi Purpose Tray 33
- Samsung Electronics4-18 34
- < MP Ass'y > 35
- 4-10 Control Panel 36
- Samsung Electronics 4-21 37
- 4-11 Engine Controller Board 38
- Samsung Electronics 4-23 39
- Samsung Electronics4-24 40
- < PCU Ass’y > 41
- Samsung Electronics 4-26 42
- Samsung Electronics 4-27 43
- 4-13 Transfer Roller Ass’y 44
- 5. Troubleshooting 45
- Samsung Electronics5-2 46
- Troubleshooting 46
- INSERT IMAGE CARTRIDGE 47
- 5-3 Malfunction 48
- Samsung Electronics 5-5 49
- Samsung Electronics5-6 50
- Samsung Electronics 5-7 51
- Samsung Electronics5-8 52
- Samsung Electronics 5-9 53
- Samsung Electronics5-10 54
- Samsung Electronics 5-11 55
- Samsung Electronics5-12 56
- SPGP1:U27 58
- CPU:U19 58
- Self Test Error 59
- Engine Error 59
- Parallel Interface Error 60
- Printing Error 60
- Samsung Electronics5-18 62
- Samsung Electronics 6-1 63
- Samsung Electronics6-2 64
- Main Ass’y Parts List 65
- Samsung Electronics6-4 66
- Cover Ass’y Parts List 67
- Samsung Electronics6-6 68
- Samsung Electronics6-8 70
- Frame Ass’y Parts List 71
- 6-4. Cassette Ass’y 74
- Cassette Ass’y Parts List 75
- 6-5. MP Tray Ass’y 76
- MP Tray Ass’y Parts List 77
- 6-6. Pick Up Ass’y 78
- Pick Up Ass’y Parts List 79
- 6-7 Fuser Ass’y 80
- Fuser Ass’y Parts List 81
- 6-8. Shield Ass’y 82
- Shield Ass’y Parts List 83
- 6-9. Bracket Duplex Ass’y 84
- 6-10. Bracket Motor Ass’y 86
- Bracket Motor Parts List 87
- 6-11. Frame SCF Ass’y 88
- Frame SCF Ass’y Parts List 89
- 6-12. Cassette SCF Ass’y 91
- Cassette SCF Ass’y Parts List 92
- 7. Electrical Parts Lists 93
- Main Engine PBA 94
- 7-2. Main Controller PBA 97
- Main Controller PBA 98
- 7-3. FLASH MEMORY PBA 100
- 7-4. PTL PBA 100
- 7-5. CASSETTE PBA 100
- 7-6. POSTSCRIPT PBA 100
- 7-7. DISP-PANEL PBA 101
- 7-8. DISP-LCD PBA 101
- 7-9. TONER PBA 101
- Samsung Electronics7-10 102
- NETWORK CARD PBA(100BASE) 103
- JC41-00011A PCB 1 PCB 104
- 8-1 WIRING DIAGRAM 105
- ML7300 ENGINE BLOCK DIAGRAM 106
- LCD Display Panel 107
- Engine Controller B’d 107
- Computer 107
- Samsung Electronics8-4 108
- Samsung Electronics 9-1 109
- 9-2. Cassette Sensor Board 110
- Samsung Electronics 9-3 111
- 9-4. Panel & LCD Board 112
- Samsung Electronics 9-5 113
- Samsung Electronics9-6 114
- 9-7. Infrared Adapor Board 115
- 9-8. Flash SIMM Board 116
- 9-9. Postscript Board 116
- 9-10. Local Talk 117
- 9-11. Serial/IrDA Board 118
- 10-1. Introduction 119
- 10-2. Board Description 120
- Service Part : JC92-01119A 120
- Product Information 121
- Samsung Electronics 10-3 121
- Samsung Electronics10-4 122
- Power Error 123
- System Error 124
- Network Error 125
- PHY Chip Error 126
- Shared Memory Interface Error 127
- Samsung Electronics10-10 128
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