Epson Apex 20020 Manual do Utilizador Página 124
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The procedure for changing a jumper setting is given first, then
the jumper functions and locations for each card are described
separately. All the instructions assume you have already
removed the cover from the computer.
Changing a Jumper Setting
A jumper setting is determined by the jumper’s position: either
between pin A and the middle pin (position A) or between pin
B and the middle pin (position B). Both positions are shown
below.
To move a jumper from one position to the other, use needle-
nose pliers or tweezers to lift it off the board and gently move it
to the other position. Be careful not to lose the jumper or leave
it out of the computer.
Memory Card Jumpers
The jumpers on the memory card control the following
functions:
Amount of RAM (main memory). If you install a memory
card that needs to use part of the main memory, you may
need to change the jumper settings to disable some of the
main memory on the memory card. Be sure to check your
memory card instructions to see if this is necessary.
EPROM size. You can change the EPROM size jumper if
you install a different size of EPROM.
- Reader Comment Card 2
- EPSON America, Inc 3
- 2780 Lomita Blvd 3
- Torrance, CA 90505 3
- Contents 7
- Introduction 15
- How to Use This Manual 16
- Where to Get Help 17
- Setting Up Your System 19
- Choosing a Location 22
- Connecting a Monitor 23
- Using the Parallel Interface 26
- Using the Serial Interface 27
- Connecting the Power Cord 29
- Connecting the Keyboard 30
- Adjusting the Keyboard Angle 32
- Turning On the Computer 33
- RAM Testing . . . 256KB 35
- System Options not set 35
- (Run SETUP in DIAGNOSTICS) 35
- Resume = 35
- "F1" key) 35
- Copying System Diskettes 36
- DISKCOPY A: A: 37
- Running the Setup Program 41
- Changing the Amount of Memory 43
- Setting the Type of Display 44
- Adding an 80287 Coprocessor 46
- Setting the Real-time Clock 48
- Leaving the Setup Program 50
- Exit without saving 51
- C : \> prompt 51
- Using Your Computer 53
- Backspace 55
- Stopping a Command or Program 56
- Resetting the Computer 57
- Turning Off the Computer 58
- Using Disks and Disk Drives 58
- Types of Diskette Drives 60
- 160KB, 180KB, 320KB, or 360KB 61
- Drive type 62
- 1.44MB 720KB, or 1.44MB 62
- Abort, fail, retry? 65
- Write-protecting Diskettes 66
- Making Backup Copies 67
- Using a Single Diskette Drive 68
- Using the Hard Disk Drive 69
- Chapter 4 73
- Starting and Exiting MS-DOS 74
- Using Drive Designators 75
- WP and press Enter 76
- Types of MS-DOS Commands 77
- Entering an MS-DOS Command 79
- DISKCOPY A: A:/1 80
- Enter to 80
- Creating and Managing Files 81
- DATA.TXT 82
- Copying Files 82
- Renaming Files 85
- RENAME PROSPECT CLIENT 85
- Using Directories 88
- Using Pathnames 91
- \WORDPROC\PERSONAL 91
- DEL C:JEAN1204.DOC 93
- CD C:\WORDPROC\PERSONAL 93
- EDGER\SALES 94
- 10866 6-18-89 95
- Formatting Diskettes 98
- Backing Up Data 101
- Copy another diskette (Y/N)? 105
- Using the BACKUP Command 105
- Using HELP 106
- ESC to exit the HELP program 107
- ESC after viewing the 107
- Using MENU 108
- Using the XTREE Utility 109
- XTREE and press 110
- Running XTREE 110
- Using an AUTOEXEC.BAT File 113
- Creating an AUTOEXEC.BAT File 114
- PROMPT $P$G 114
- PATH C:\DOS 114
- Installing Option Cards 117
- Inserting the Option Card 120
- Jumper Settings 123
- Changing a Jumper Setting 124
- Memory Card Jumpers 124
- Main Circuit Board Jumpers 126
- Multi-function Card Jumpers 128
- Installing Option 129
- Removing an Option Card 131
- Replacing the Cover 132
- Post-installation Setup 134
- Troubleshooting 135
- The Computer Does Not Respond 136
- Keyboard Problems 137
- Monitor Problems 138
- Diskette Problems 139
- Disk error reading drive d : 140
- Disk error writing drive d : 140
- Diskette Drive Problems 142
- Hard Disk Problems 143
- Software Problems 145
- Printer Problems 146
- Option Card Problems 147
- Specifications 149
- Interfaces 150
- Power Supply 150
- Mass Storage 150
- Keyboard 151
- Environmental Requirements 152
- Power Requirements 152
- Video and Display Options 152
- Other Apex Options 153
- Parallel Port Pin Assignments 155
- Serial Port Pin Assignments 156
- Specifications A-9 157
- Power-On Diagnostics 159
- Timer and CMOS RAM Check 160
- RAM Check 161
- Display Card Check 162
- Optional RAM Check 162
- Diskette Drive Seek Check 162
- 1782-Disk controller failure 163
- 178n-Disk n error 163
- 179n-Disk n error 163
- Performing System Diagnostics 165
- Modifying the DEVICE LIST 167
- Selecting a Test 169
- System Board Check 171
- Memory Check 172
- Keyboard Check 172
- Is the display correct (Y/N)? 176
- Sync Check 177
- Run All Above Checks 177
- Color Graphics Adapter Check 178
- N and Enter 179
- Is the display 180
- 40-column Character Set Check 180
- N and Enter to 181
- Screen Paging Check 182
- Color Video Check 184
- Check which drive (A/B)? 186
- Sequential Seek Check 186
- Current track is 39 186
- Random Seek Check 186
- Write, Read Check 187
- Current track is 79 187
- Speed Check 187
- Disk Change Check 188
- Remove the disk from drive d 188
- Serial Port (RS-232C) Check 191
- Alternate Serial Port Check 192
- Dot-matrix Printer Check 192
- Check which drive (C/D)? 194
- Seek Check 194
- Head Select Check 196
- Error Codes and Messages 198
- Appendix D 201
- Reformatting a Used Disk 203
- Formatting a New Disk 204
- Conditional Format (Normal) 205
- Unconditional Format 207
- XXXX and 209
- Destructive Surface Analysis 210
- Preparing a Hard Disk for Use 213
- Partitioning the Hard Disk 214
- Creating the MS-DOS Partition 215
- System will now restart 216
- Press any key when ready 216
- SELECT A: 218
- C:\DOS 001 US 218
- COPY *.* C:\DOS 222
- Types of Hard Disk Drives 225
- Glossary 227
- Ctrl and press 229
- Megahertz (MHz) 236
- Glossary 15 241
- Wildcard 242
- Glossary 17 243
- Write-protecting diskettes 250
- XCOPY, 4-29 250
- XTREE, 4-37-41 250
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