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Epson NX Service Manual

Epson NX Service Manual

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EPSON
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Summary of Contents for Epson NX

  • Page 1 ® EPSON Service Manual Printed on Recycled Paper.
  • Page 2 Epson America, Inc. No patent liability is assumed with respect to use of the information contained herein. Nor is any liability assumed for damages resulting from the use of the information contained herein.
  • Page 3 I/O cable. These devices usually require a shielded cable. For Epson peripheral &vices, you can obtain the proper shielded cable from your dealer. For non-Epson devices, contact the manufacturer or dealer for assistance.
  • Page 4 Other Agency Approvals Application for approval of this equipment has been made to the following agencies: States: United Canada: Europe: Epson NX Service Manual UL, FCC Class B CSA, DOC VDE Class B, CISPR Class B, TUV, NEMKO, SEMKO, SETI...

  • Page 5: About This Manual

    About this Manual This manual is designed to be used with the Epson NX system. System Description, Chapter 1, descriptions, and the locations of all major components. 2, Troubleshooting, Chapter the computer. 3, Removing and Replacing Subassemblies, Chapter of the computer to its replaceable components.

  • Page 6: Table Of Contents

    Keyboard ............System Description 1- 1 l-11 l-11 1-12 1-13 1-15 1-16 1-16 1-16 1-16 1-17 1-18 1-18 1-18 l-22 Epson NX Service Manual...
  • Page 7 Keyboard Specifications....... . Table l-20 Epson NX Service Manual 1-ii...

  • Page 8: System Overview

    System Overview The Epson NX desktop computer is an advanced, high-performance desktop system fully compatible with Industry Standard Architecture (ISA) at the hardware and software level. This computer has the capacity for installation of up to three storage devices and addition of four option cards.

  • Page 9: Generalfeatures

    General Features The following features are standard: Intel i486DX2/66 CPU PGA CPU-type ZIF socket that can also contain a future OverDrive processor 8KB CPU Cache and Epson VirtualCache C&T Wingine 64200 video display driver Diskette drive (3%inch) A choice of no hard drive, a 170MB Conner IDE hard disk drive, a 24OMB Quantum...

  • Page 10: Frontpanel

    System Description Front Panel Figure l-2 shows the features on the front panel of the system. Table l-2 describes the front panel features. Figure 1-2 Front View Table 1-2 Front Panel Features Epson NX Service Manual...

  • Page 11: Rearpanel

    System Overview Rear Panel Figure l-3 shows the features on the rear panel of the system. Table 1-3 describes the rear panel features. Figure 1-3 Rear View Epson NX service Manual...

  • Page 12: Options

    3½-inch 8OMB, 12OMB, or 240MB IDE hard disk drives 1, 4, 16, or 64MB (when available), 36-bit, 70-ns SIMM option kits VGA, Super VGA, and multi-frequency color monitors Epson 25OMB tape backup drive Media Vision Spectrum Labtec CSS-550 speaker option kit.

  • Page 13: Document Sources

    System Overview Document Sources Emissions and Safety Agency Information The Epson NX in a typical configuration meets or exceeds the requirements of the emissions and safety agencies listed in Table l-4. Table 1-4 Emissions and Safety Agency Data Epson NX Service Manual...

  • Page 14: Environmental Specifications

    System Description Environmental Specifications Table l-5 lists the. environmental specifications for the Epson NX. Table l-5 Environmental Specifications Epson NX Service Manual...

  • Page 15: Subassembly Descriptions

    This section gives descriptions and specifications for the following subassemblies: Case System board along with connectors and jumpers Power supply Memory Disk drives Keyboard. Figure l-5 shows the major subassemblies of the computer. Epson NX Service Manual Figure 1-5 System Level Assemblies...

  • Page 16: Case

    The multi-piece case unit is shown in Figure l-5 and described in Table 1-6, below. System Board Figure l-6 shows the major components on the main system board. The functions of these components are described in Table l-7. System Board Component Functions Table 1-6 Case Specifications Table 1-7 Epson NX Service Manual System Description...

  • Page 17: Figure L-6 System Board Components

    Subassembly Descriptions Figure l-6 System Board Components Epson NX Service Manual 1-10...

  • Page 18: Connectors And Jumpers

    Figure l-6. Connectors Table l-8 lists the connectors on the main system board. You can find a description of all connector pin assignments in Appendix A. Table 13 System Board Connectors System Description Epson NX Service Manual 1-71...

  • Page 19: Jumpers

    B and the middle pin. The jumper settings are defined in Table 1-9, Table l-10, and Table l-11. Table 1-9 System Board Jumper Settings (51-54) Table l-10 System Board Jumper Settings (JS-J8) Table l-11 System Board Jumper Settings (J9-515) 1-12 Epson NX Service Manual...

  • Page 20: Power Supply

    The power supply is shown in Figure l-7. Specifications are given in Table 1-12. Voltage switch / Power inlet Figure 1-7 Power Supply System Description Power-on/off switch Epson NX Service Manual 1-13...

  • Page 21: Table 1-12 Power Supply Specifications

    Subassembly Descriptions Table 1-12 Power Supply Specifications Figure l-8 shows the power supply cable layout and connectors. Epson NX Service Manual 1-14...

  • Page 22: Memory

    512KB, 70-ns chips. The system supports 1, 4, 16, or 64MB (when available), 70-ns SIMMs; two SIMMs may be installed for a maximum of 128MB Memory is controlled by a custom ASIC designed by Epson that permits burst cycles from standard DRAM. The system memory has the following features:...

  • Page 23: Bios Rom

    8KB of internal cache is built into the microprocessor. Cache address control is selectable through SETUP and testing is available through the system diagnostics. The system also supports a new feature designed by Epson called VirtualCache. VitualCache is a dynamic DRAM memory cache that functions like cache SRAM. VirtualCache utilizes the burst-mode capabilities of the 486 CPU to minimize memory access time.

  • Page 24: Memory Expansion

    36MB of RAM is standard for the 525MB HDD configuration. + The standard 4 MB of memory is not accessible when both SIMM sockets are populated with 64MB SIMMs. Table 1-13 Memory Configuration Epson NX service Manual System Description 1-17...

  • Page 25: Mass Storage

    There are three optional hard disk drive configurations available from the factory: a Conner CP30174E 170MB drive, a Quantum LPS240AT 240MB drive, or a Quantum LPS525S 525MB drive. 1-18 Epson NX Service Manual Table 1-14 Diskette and Tape Drive Options Table l-15...

  • Page 26: Table

    System Description Specifications for the Conner CP30174E HDD Table 1-16 Specifications for the Quantum LPS525S HDD Table 1-18 Quantum LPS525S 52SMB SCSI HDD Specifications 1-19 Epson NX Service Manual...

  • Page 27: Figure L-10 Jumper Placement For Hdds

    CS jumper, the drive is a master drive if pin 28 is grounded and a slave if pin 28 is not grounded) Quantum LPS525S 525MB SCSI HDD See Table 1-19 for jumper settings. Epson NX Service Manual 1-20 Figure l-10. Jumper Placement for HDDs...

  • Page 28: Table

    System Description Table 1-19 Quantum LPS525S Jumper Settings bus (to be used when drive is Factory default jumper setting Epson NX Service Manual 1-21...

  • Page 29: Table L-20 Keyboard Specifications

    Adjustable legs allow you to use the keyboard at two different heights. Figure l-11 shows the l0l-key keyboard. A 102-key model is also available. Table l-20 provides the specifications for the l0l-key keyboard. Figure l-11 l0l-Key Enhanced Keyboard 1-22 Epson NX Service Manual Table l-20 Keyboard Specifications...

  • Page 30: Figure

    Recommended Service Tools ........Epson Authorized Replacement Modules.......
  • Page 31 Error Beep Codes ........Table 2-4 Epson NX Service Manual 2-ii...

  • Page 32: General Information

    The diagnostics are broken down into three sections: Power-on diagnostics and boot errors Error tone codes General system problems. Recommended Service Tools The recommended service tools are listed in Table 2-1. All tools are commercially available. Table 2-1 Recommended Service Tools Epson NX Service Manual...

  • Page 33: Epson Authorized Replacement Modules

    Epson Authorized Replacement Modules Table 2-2 lists the authorized replacement modules for the Epson NX. The reference letter assigned to each module is used in this chapter to indicate when you should replace that module and test the system again.

  • Page 34: Power-On Diagnostics And Boot Errors

    Table 2-3 provides a list of the error messages that may appear. The solutions that are provided must be followed in order. If more than one replacement module is specified, replace them in order, one at a time. Power-on Diagnostic Error Messages Table 2-3 Epson NX Service Manual...
  • Page 35 Power-On Diagnostics and Boot Errors Epson NX Service Manual...
  • Page 36 Replacement of these components is performed only by authorized service centers outside the U.S. Servicers in the U.S. should replace the system board when there is a malfunction of any of the components marked with an asterisk. Epson NX Service Manual...

  • Page 37: Error Beep Codes

    Replacement of these components is performed on centers outside the U.S. board when there is a malfunction of any of the components marked with an asterisk. Epson NX Service Manual Table 2-4 Error Beep Codes by authorized service Servicers in the U.S. should replace the system...

  • Page 38: General System Problems

    User’s Guide and a summary can be found in Appendix B of this manual. Power or Lock-up Problems If there is a problem with the computer’s power or the system locks up, see the suggestions below: Troubleshooting Epson NX Service Manual...

  • Page 39: Computer Doesn't Start

    An overload of the power supply limitations. Check the information on page 1-14 to see if the power limits have been observed. If the power supply shuts off again after you follow the steps above to correct the problem, replace the Rower supply module. Epson NX Service Manual...

  • Page 40: Keyboard Problems

    Replace the keyboard controller. The controller may be faulty. Check the continuity of fuse Fl (1A @ 125V) on the system board and replace it if blown. Replace the system board. Figure 2-2 Keyboard Problems Troubleshooting Epson NX Service Manual...

  • Page 41: Sticking Keys

    Remove the sticking keys and clean all internal parts. Remove the keys and replace any broken parts. Video Problems If there is a problem with the computer’s video system, see the suggestions below: 2-10 Epson NX Service Manual Figure 2-3 Video Problems...

  • Page 42: Blank Screen

    Test the video adapter by running the video diagnostics tests. If the tests indicate an error, replace the system board. The video controller may be faulty. Authorized service centers outside the U.S. can replace the video controller chip. Troubleshooting Epson NX Service Manual 2-11...

  • Page 43: Diskette Drive Problems

    Authorized service centers outside the U.S. can replace the gate array chip. Diskette Drive Noise lf the diskette drive is making loud or unusual noises, check for any loose parts and replace the diskette drive if necessary. Epson NX Service Manual 2-12 Figure 24 Diskette Drive Problems...

  • Page 44: Hard Disk Problems

    Lf you installed a non-Epson hard disk drive, verify that it has a DOS partition. (The hard disk drives Epson provides with the Epson NX have a DOS partition as well as a partition for NeXTSTEP software.) You can check for a DOS partition by booting with a DOS system diskette and running the FDISK program.

  • Page 45: Hard Disk Boot Failure

    Boot the system from a DOS system diskette in drive A. Then enter the command DIR C: . (The drives Epson provides for the Epson NX have a partition for DOS as well as a partition for the NeXTSTEP operating system.) If you see a message similar to Invalid device sgecification,go to step 4.

  • Page 46: Parallel Printer Problems

    Run the parallel port diagnostics test. Replace the system board. Connector CN5 or the parallel port controller in the F82C711 gate array may be faulty. Authorized service centers outside the U.S. can replace the gate array chip or connector. Troubleshooting Epson NX Service Manual 2-15...

  • Page 47: Serial Port Problems

    Replace the system board. Connectors CN4 and CN8 or the serial port controller in the F82C711 gate array may be faulty. Authorized service centers outside the U.S. can replace the gate array chip or connector. 2-16 Epson NX Service Manual Figure 2-8 Serial Port Problems...

  • Page 48: Option Card Problems

    Some cards may use a part of the memory address space that conflicts with the addresses assigned to Video Shadow RAM. Use the SETUP program to disable the Video Shadow RAM. Replace the option card. Figure 2-9 Option Card Problems or 386MAX Troubleshooting , try removing the program from Epson NX Service Manual 2-17...

  • Page 49: Memory Module Problems

    Replace the system board. The SIMM connectors or memory controller in the EP6075 gate array may be faulty. Authorized service centers can replace the gate array chip or Connector. 2 - 1 8 Epson NX Service Manual Figure 2-10 Memory Module Problems...

  • Page 50: Mouse Problems

    For servicers outside the U.S., replace the keyboard/mouse controller. The controller may be faulty. Check the continuity of fuse Fl (1 A @ 125V) on the system board. Replace the fuse if it is blown. Replace the system board. Figure 211 Mouse Problems Troubleshooting Epson NX Service Manual 2-19...

  • Page 51: Troubleshooting With The Nextstep Operating System

    General System Problems Troubleshooting with the NeXTSTEP Operating System As has been described previously, you can diagnose hardware problems for the Epson NX system by inserting a DOS boot or diagnostics diskette and running the checks in this chapter. The paragraphs below describe a few features of the NeXTSTEP operating system that may be useful for a service technician to know during troubleshooting.
  • Page 52 Replacing the Front Bezel ......... Removing and Replacing Subassemblies Epson NX Service Manual 3-10...
  • Page 53 Figure 3-17 Removing/Replacing the System Board....Figure 3-18 Removing/Replacing the Front Bezel ..... 3-ii Epson NX Service Manual 3-10 3-11...

  • Page 54: General Service Information

    General Service Information This chapter provides instructions for removing and replacing the major subassemblies of the Epson NX. The following precautions must be observed when performing any service procedures. DANGER Turn off the computer and all peripheral devices and disconnect all peripheral interface cables from the system unit before removing the system unit cover.

  • Page 55: System Unit

    Turn the computer around so you are facing the back panel. Remove the three retaining screws securing the cover to the back panel, as shown in Figure 3- 1. Figure 3-1 Removing the Cover Retaining Screws Epson NX Service Manual...
  • Page 56 Grasp the sides of the cover and pull it straight toward you until it stops, just before it reaches the front of the computer. Then lift it off at an angle as shown in Figure 3-2. Set the cover aside on a flat surface. Removing Figure 3-2 Removing the Cover Replacing Subassemblies Epson NX Service Manual...

  • Page 57: Replacing The Cover

    Replace the three cover retaining screws as shown in Figure 3- 1. Reconnect the computer to the monitor, printer, keyboard, mouse, and any other peripheral devices. Then reconnect the power cable to the back of the computer and to an electrical outlet. Epson NX Service Manual Figure 3-3 Replacing the Cover...

  • Page 58: Removing An Option Card

    J12 needs to be changed. If you remove a video card, the settings of jumper Jl0 or J11 may need to change. See page 1 - 12 for more information on jumper settings. Removing and Replacing Subassemblies Epson NX Service Manual...

  • Page 59: Removing The Option Slot Cover

    Remove the cover as described on page 3-2. To replace the option slot cover, insert the cover as shown above in Figure 3-5 and secure it with the retaining screw. Replace the computer’s cover. (See page 3-4.) Epson NX Service Manual...

  • Page 60: Installing An Option Card

    The computer has four 16-bit option slots located on the option card connector board and accommodates up to four option cards. (The Epson NX comes with a network card in one option slot, and some configurations may have a SCSI interface in another slot.) An option card can occupy any slot.

  • Page 61: Removing The Option Card Riser Board

    Position the board above its slot (CN14) as shown in Figure 3-6 and then firmly push it straight in. Secure the bracket to the power supply and then to the board with the retaining screws. Replace any option cards previously removed before replacing the computer’s cover. Epson NX Service Manual...

  • Page 62: Removing Slmms

    Replace any option cards removed (see page 3-7). Replace the computer’s cover (see page 3-4). Run the SETUP program immediately to update the computer’s configuration with the new memory information. Removing and Replacing Subassemblies Figure 3-7 Removing SIMMs Epson NX Service Manual...

  • Page 63: Installing Simms

    Repeat steps 4 and 5 for each SIMM you want to install. Replace any option cards you removed and the cover. Run the SETUP program immediately in order to update the computer’s configuration with the new memory information. 3-10 Epson NX Service Manual...

  • Page 64: Instaliing Another Processor

    Installing Another Processor You can install a future Intel OverDrive processor in the Epson NX system, when it becomes available. You must observe strict anti-static procedures to avoid Caution damaging the CPU as you install or remove it. Follow these steps to install the CPU in socket U5: Remove the cover (see page 3-2) and any option card that may be in the way of accessing the socket (see page 3-5).

  • Page 65: Removing A Drive From The Horizontal Position

    If one of two hard disk drives is removed, the jumpers on the remaining hard disk drive must be changed Check the hard disk drive documentation for details. Replace the cover (see page 3-4). Reconfigure the system with the SETUP utility before using the computer. 3-12 Epson NX Service Manual...

  • Page 66: Installing A Drive In The Horizontal Position

    Secure the drive mounting rails to the front of the chassis with the two retaining screws removed in step 2 above. Removing Replacing Subassemblies Epson NX Service Manual 3-13...
  • Page 67 (see Figure 3- 11). Replace the cover (see page 3-4). Reconfigure the system with the SETUP utility before using the computer. 3-14 Epson NX Service Manual Figure 3-11 Attaching Drive Cables cable Drive...

  • Page 68: Removing A Hard Disk Drive From The Vertical Position

    Replace the hard drive mounting bracket onto the drive bay and secure both in place with the screw removed in step 2 above. Replace the cover (see page 3-4). Reconfigure the system with the SETUP utility before using the computer. Removing and Replacing Subassemblies Epson NX Service Manual 3-15...

  • Page 69: Installing A Hard Disk Drive In The Vertical Position

    Be sure that you plug the connectors all the way into their sockets. Replace the cover (see page 3-4). Reconfigure the system with the SETUP utility before using the computer. 3-16 Epson NXService Manual...

  • Page 70: Removing The Power Supply

    Pull the power supply toward the front of the chassis until the back of the power supply has cleared the rear panel. Then lift it up and set it aside. Removing and Replacing Subassemblies Epson NX Service Manual 3-17...

  • Page 71: Reinstalling The Power Supply

    Connect the computer’s power cable from the electrical outlet to the input receptacle located at the rear panel. Also connect any peripheral device cables that were previously disconnected from the computer, including the keyboard and mouse. 3-16 Epson NX Service Manual Figure 3-14 Power Supply Power Cables P S l...

  • Page 72: Removing The Speaker

    (see Figure 3-15). Connect the speaker cable to CN3 on the system board. Replace any option cards removed and the cover. Removing and Replacing Subassemblies assembly Epson NX Service Manual 3-19...

  • Page 73: Removing The Leds

    Rush the right locking tab through its hole in the front of the chassis. (See Figure 3-15.) Connect the HDD LED cable to CN15 and the speed LED cable to CN 16. Replace any option cards removed and the cover. 3-20 Epson NX Service Manual...

  • Page 74: Removing The Bios Eproms

    Gently insert the SETUP Text EPROM into socket U113. Align the half-circle notch of the chip with the notch of the socket to assure proper orientation (see Figure 3-16). Replace the cover and any option cards removed Removing and Replacing Subassemblies Epson NX Service Manual 3-21...

  • Page 75: Removing The System Board

    Pull the system board forward then tilt it up. Then pull the system board slightly toward you and lift it up and out of the chassis. Place the system board on an anti-static surface or in an anti-static bag for protection. 3-22 Epson NX Service Manual...

  • Page 76: Replacing The System Board

    Set the cover upside down on a smooth flat surface and locating the front bezel locking tabs gently press down on the tabs while pulling the bezel away from the cover. Removing and Replacing Subassemblies Epson NX Service Manual 3-23...

  • Page 77: Replacing The Front Bezel

    Secure the front panel to the cover with the two retaining screws (see Figure 3-18). Replace the cover (see page 3-4). 3-24 Epson NX Service Manual...

  • Page 78: Reference Materials

    List of Abbreviations ..........Reference Materials A-10 A- 11 A-12 A-13 A-14 A-14 A-16 A-16 A-17 A-18 A-19 A-19 A-20 A-21 A-24 Epson NX Service Manual...
  • Page 79 Adaptec Jumper Settings ....... A-ii Epson NX Service Manual A-10...

  • Page 80: Hard Disk Drive Types

    Hard Disk Drive Types Epson NX Service Manual...
  • Page 81 Had Disk Drive Types Epson NX Service Manual...
  • Page 82 System l/O Address Map Epson NX Service Manual...

  • Page 83: System I/O Address Map

    System I/O Address Map Epson NX Service Manual...

  • Page 84: Dma Assignments

    DMA Assignments Epson NX Service Manual...

  • Page 85: Hardware Interrupts

    Hardware Interrupts Epson NX Service Manual...

  • Page 86: Connector Pin Assignments

    The VGA connector (CN2) is a 15-pin D-shell, female receptacle accessible from the rear of the computer. Figure A-2 shows the connector and Table A-2 provides the pin assignments. VGA Port Connector Pin Assignments Table A-2 Epson NX Service Manual Reference MateriaIs...

  • Page 87: Speaker Connector

    The serial ports (CN4 and CN8) are 9-pin, D-shell male connectors, accessible from the rear of the computer. Figure A-4 shows the connector and Table A-4 provides the pin assignments. Epson NX Service Manual Table A-4 Serial Port Connector Pin Assignments...

  • Page 88: Parallel Port Connector

    Parallel Port Connector The parallel port connectar (CNS) is a 25-pin, D-shell female connector, accessible from the rear of the computer. Figure A-5 shows the connector and Table A-5 provides the pin assignments. Epson NX Service Manual...

  • Page 89: Ide Hard Disk Drive Data Connector

    The IDE hard disk drive data connector (CN6) is a 40-pin, header connector, accessible from inside the computer and located on the system board. Figure A-6 shows the connector and Table A-6 provides the pin assignments. Epson NX Service Manual A-10...

  • Page 90: Diskette Drive Data Connector

    The diskette drive data connector (CN7) is a 34-pin header connector, accessible from inside the computer and located on the system board. Figure A-7 shows the connector and Table A-7 provides the pin assignments. Reference Materials Epson NX Service Manual A-11...

  • Page 91: Keyboard And Mouse Connectors

    The mouse (CN9) and keyboard (CNlO) connectors are 6-pin mini DIN receptacles, accessible from the rear of the computer. Figure A-8 shows the connector and Table A-8 provides the pin assignments. Note Although the keyboard and mouse connectors are physically identical, they cannot be used interchangeably. A-12 Epson NX Service Manual...

  • Page 92: Battery Connector

    The reset connector (CN12) is a 2-pin connector that has no posts and is in place for future use. Figure A- 10 shows the connector and Table A-10 provides the pin assignments. Figure A-10 Reset Connector Table A-10 Reset Connector Pin Assignments Epson NX Service Manual A-13...

  • Page 93: Power Supply Connectors

    The riser board connector (CN14) is a 120-pin, female recepticle that supplies power and interface lines to the four option slots on the riser board. Figure A-12 shows the connector and Table A-12 provides the pin assignments. A-14 Epson NX Service Manual Figure A-11 Power Supply Connector Table A-11 Power Connector Pin Assignments...
  • Page 94 Reference Materials Table A-12 Option Card Riser Board Connector Pin Assignments A-15 Epson NX Service Manual...

  • Page 95: Hdd Access Led Connector

    The Power LED connector (CN16) is a 3-pin, male header connector, accessible from inside the computer and located on the system board. Figure A-13 shows the connector and Table A-14 provides the pin assignments. Figure A-13 Power (SPEED) LED Connector Power (SPEED) LED Connector Pin Assignments A-16 Epson NX Service Manual Table A-14...

  • Page 96: Vga Feature Connector

    VGA Feature Connector The VGA Feature connector (CN17) is a 26-pin header, accessible from the inside of the computer. Figure A-15 shows the connector and Table A- 15 provides the pin assignments. Figure A-15 VGA Feature Connector A-17 Epson NX service Manual...

  • Page 97: Option Slot Connectors

    The option slot connectors on the riser board are 98-pin, female receptacles. Figure A-16 shows one of these connectors and Table A-16 provides the pin assignments. Figure A-16 Option Slot Connector Table A-16 Option Slot Connector Pin Assignments A-16 Epson NX Service Manual...

  • Page 98: Drive Power Connectors

    BNC coax (thin Ethernet), AUI DB-15S (thick Ethernet), and RJ45 (10BaseT Ethernet). The card is software configurable for I/O address, IRQ, connector type, and I./O or memory-mapped buffering. A diagnostic utility is included. Table A-18 Intel EtherExpress LED Indicators Epson NX Service Manual A-19...

  • Page 99: Smc Ether Card Plus Elite16 Combo

    W 1, shown in the figure above, to SOFT to use the adapter setup program to select the I/O address, IRQ, and RAM base address; or move it to 300, 10, CC000 to select I/O address 300, IRQlO, and RAM base address CC000. A-26 Epson NX Service Manual Table A-19 SMC EtherCard LEDs...

  • Page 100: Adaptec Aha-1540B

    Adaptec AHA-1504B Figure A-19 Adaptec Jumper Locations Table A-20 Adaptec Default Settings A-21 Epson NX Service Manual...
  • Page 101 Connector Pin Assignments Table A-21 Adaptec Jumper Settings A-22 Epson NX service Manual...
  • Page 102 Adaptec Jumper Settings Continued A-33 Epson NX Service Manual...

  • Page 103: List Of Abbreviations

    List of Abbreviations List of Abbreviations A-24 Epson NX Service Manual...
  • Page 104 Reference Materials Epson NX Service Manual A-25...
  • Page 105 Selecting a Drive ..........System Utilities B-10 B-10 B-10 B-10 B-11 B-11 B-11 B-11 B-12 B-13 B-14 B-14 B-14 B-15 B-16 B-20 B-21 B-24 B-25 B-25 B-25 B-25 Epson NX Service Manual...
  • Page 106 ESPEED Command Options ......B-ii Epson NX Service Manual ....... . .

  • Page 107: Running The Setup Program

    SETUP. You see a message like the example message below: Memory size mismatch (Run SETUP) Press <F2> to run SETUP (Resume = <Fl> key) If this happens, press F2 to run SETUP and correct the setting. System Utilities Epson NX Service Manual...

  • Page 108: Starting The Setup Program Stored In Rom

    SETUP options. You can change most of the SETUP options listed in this appendix; however, the program automatically sets the following options which cannot be changed: Base memory Extended memory Number of diskette drives installed Video type. Epson NX Service Manual...

  • Page 109: Selecting Options

    Table B-l lists the keys you can use to perform all SETUP operations. You can scroll through the options When you reach an option you want to change, Table B-l SETUP Key commands System Utilities Epson NX Service Manual...

  • Page 110: Setting The Date And Time

    Backspace to erase the characters before you press Enter.) If an invalid date (such as month 13) is entered, the date prompt will flash on the month (mm) field again. Follow steps 2 through 4 again and enter a valid date. Epson NX Service Manual...
  • Page 111 If an invalid time (such as hour 25) is entered, the time prompt will flash on the hour (hh) field again. Repeat step 5 again and enter a valid date. The time prompt disappears and the date and time set is displayed on the screen. Epson NX Service Manual...

  • Page 112: Setting The Processor Speed Options

    The Software sgeed change option disables the keyboard speed changing commands if they are not compatible with certain application programs. The default is D i s a b l e d . Epson NX Service Manual Table B-2 Processor Speed Options...

  • Page 113: Setting The Fast Boot Option

    The default setting for all these address areas is Enabled. To disable shadow RAM at an address, select the area and press Enter then press D i s a b l e d . BIOS be shadowed - enabling must to change the setting to Epson NX Service Manual System Utilities at C000...

  • Page 114: Setting The Keyboard Options

    The Num Lock status after boot default setting is ON. The option is Installed Equipment Setup displays information about the following equipment (except for math coprocessor, these fields are non-editable): Number of diskette drives Video type Math coprocessor. Epson NX Service Manual OFF.

  • Page 115: Setting The Built-In I/O Port Options

    The internal hard disk drive controller’s default setting is Enabled which allows the internal hard disk drive controller to function. To override the internal hard disk drive controller function change the setting to D i s a b l e d . System Utilities Epson NX Service Manual...

  • Page 116: Setting The Port Configuration

    I n s t a l l e d . Setting the Password security The default setting is Not installed. To install a password change the setting to I n s t a l l e d . B-10 Epson NX Service Manual Table B-3 I/O address options.

  • Page 117: Setting The Password

    Note The SETUP program Hard Drive options do not list the Precomp or Land zone parameters for the hard drive types. These parameters are included in the table in Appendix A. drive drive is installed as 1, select Epson NX Service Manual System Utilities Not installed. B-11...

  • Page 118: Defining Your Own Drive Type

    Press Enter after typing each number. If you enter an invalid number, the computer beeps and does not go on to the next parameter. Check the drive documentation and try again. B-12 Epson NX Service Manual sectors track...

  • Page 119: Setting The Non-Cache Areas

    4KB increments; or press Pg Up or Once the low address is set, set the corresponding high address in the same manner. Enter. Then press + or - to scroll through Pg Dn to scroll in 256KB increments. Epson NX Service Manual System Utilities B-13...

  • Page 120: Setting The Cache Test And User Control Options

    SETUP. Follow the instructions on the screen to run SETUP again to correct it. (You may need to turn the computer off and then on again.) B-14 Epson NX Service Manual Table B-5 Vertical Refresh Rate Options Save...

  • Page 121: Performing System Diagnostics

    Be sure to back up any data on your hard disk or insert a blank, formatted diskette before you run this test. Also, be sure to do this if you select Run all above checks. System Utiliti8s Epson NX Service Manual B-15...

  • Page 122: Starting The System Diagnostics Program

    When the list is correct, you can run diagnostic tests on each device. If you do not want to test a device, you can remove it from the list. You can also add a device to the list. B-16 Epson NX Service Manual...

  • Page 123: Deleting Tests

    Enter. The device is removed from the Delete menu. You can delete as many devices as you want. When you are finished deleting devices, press <- to select Execute; see “Running Tests” on page B-19. System Utilities Manual Epson NX Service B-17...

  • Page 124: Adding Tests

    Add menu and added to the Items Detected list. You can add as many devices as you want. When you are finished adding devices, press <- to select Execute. Then see the next section. B-18 Epson NX Service Manual...

  • Page 125: Running Tests

    System Utilities Running Tests Follow these steps to run a test from the Execute menu: Press <- or -> to select Execute. You see the following Execute menu: B-19 Epson NX Service Manual...

  • Page 126: Resuming From An Error

    For a complete list of the error messages the program may display, see the table at the end of this chapter. B-20 Epson NX Service Manual...

  • Page 127: System Diagnostics Tests

    The table below lists all the system diagnostics tests you can run on your system. *The Write/Read check destroys data on the disk. disk or insert a blank diskette Table B-6 Diagnostics System Tests Be sure to back up data on a hard Epson NX Service Manual System Utilities B-21...

  • Page 128: Error Messages

    Performing System Diagnostics Error Messages The following table lists all the error messages that may appear during system diagnostics testing. Table B-7 System Diagnostics Error Messages B-22 Epson NX Service Manual...
  • Page 129 System Utilities B-23 Epson NX Service Manual...

  • Page 130: Formatting A Hard Disk

    If the computer came with a factory-installed hard disk, or if you installed an optional IDE hard disk from Epson, it has already been physically formatted. You need only follow the instructions in the operating system manual to prepare the hard disk for use.

  • Page 131: Reformatting A Used Disk

    Many hard disk drives come with a printed list of bad tracks, but the bad tracks am not flagged on the disk Other hard disks (such as Epson’s disks) come with the bad tracks already flagged.

  • Page 132: Option 1, Format

    Accept recomnended skewed sectors in For a hard disk drive installed by Epson , it is best to accept the recommended skewed sector (also called the interleave factor) of 1, since this setting allows your drive to perform more efficiently. For other hard disk drives, you may need to change this value if the documentation that came with the disk recommends a different number.

  • Page 133: Modifying The Defective Track Table

    Move cursor to desired track with Change track, D = Delete track, (0 - nn): (nnnn Epson NX Service Manual System Utilities to change nn) vary according to the B-27...
  • Page 134 When formatting is complete, the program flags any bad tracks and you see a series of messages like these: Format finished. Flagging bad tracks... Cylinder is nnnn, head is nn Format completed. Press Enter to return to the Hard Disk Format Menu. B-28 Epson NX Service Manual...

  • Page 135: Option 2, Destructive Surface Analysis

    To flag these tracks as bad, select Y. You see a list of the tracks as they are flagged. When the process is complete, press Enter to return to the Hard Disk Format Menu. System Utilities from the Hard Disk analysis tracks? Epson NX Service Manual (Y/N) B-29...

  • Page 136: Option 3, Non-Destructive Surface Analysis

    If you formatted the hard disk or ran the destructive surface analysis option, you must now prepare your hard disk for use with your operating system. See your operating system manual for instructions. B-30 Epson NX Service Manual You see the operating system command Exit.

  • Page 137: Additional Utilities

    IDE drives as long as you do not move the system for 20 seconds after turning the power off. IDE drives automatically park the heads. Table B-8 ESPEED Command Options Function Sytem Utilities Epson NX Service Manual B-31...
  • Page 138 Video Circuitry (Part 2) ......... . . c-10 c-11 C-12 C-13 c-14 Epson NX Service Manual...

  • Page 139: Cpu Circuitry

    CPU Circuitry Epson NX Service Manual...

  • Page 140: Video Circuitry (Part 1)

    Video Circuitry ( Part 1 ) Epson NX Sevice Manual...
  • Page 141 System end Virtual Cache Controller Circuitry Epson NX Servlce Manual...

  • Page 142: Peripheral And I/O Controller Circuitry

    Circuitry Peripheral and I/O Controller Epson NX Service Manual...

  • Page 143: Simm And Memory Circuitry

    SIMM and Memory Epson NX Service Manual...
  • Page 144 Wingine/Virtual Memory Controller Epson NX Sew/w Manual...

  • Page 145: Vga Feature Circuitry

    VGA Feature Circuitry Epson NX Service Manual...
  • Page 146 Keyboard/Mouse Controller Circuitry Epson NX Service Manual C-10...

  • Page 147: Riser Board Connector Circuitry

    Connector Riser Board circuitry C-11 Epson NX Service Manual...
  • Page 148 Power Supply and Reset Circuitry Epson NX Service Manual C-12...

  • Page 149: Supplemental Pal Circuitry

    Supplemental PAL Circuitry Epson NX Service Manual C-13...

  • Page 150: Video Circuitry (Part 2)

    Epson NX Service Manual Video Circuitry (Part 2) C-14...
  • Page 151 Fuses 2-3, 2-8, 2-15, 2-19 General system problems Harddisk 1-18 controller drive types A-1, B-11 formatting B-24 IDE connector l-l 1, A-10 installing 3-13 ,3-16 l-20 - 1-21 jumpers Epson NX Service Manual I n d e x - 1...
  • Page 152 Map of memory 1-15 Mass storage 1-18 Memory 1-15, 1-17 expansion 1-17 1-15 Monitor problems 2- 10 Index-2 Epson NX Service Manual l-11, A-16 B-24 B-14 Mounting rails 3- 13 Mouse l-11, A-12 Connector controller 1-9 problems 2-19 Network card...
  • Page 153 System controller l-9 System diagnostics 2-7, B-15, B-21 System I/O address map Time and date B-4 l-11, A-8 2-16 2- 1 B- 10 l-17, 3-10 2-18 1-17 l-11, A-8 3-19 3-19 3-20 3-22 3-23 Epson NX Service Manual Index-3...
  • Page 154 Upgrading BIOS 1-16 Vertical refresh B-14 BIOS 1-9 feature connector l-11 port port connector A-7 Video BIOS B-7 DRAM 1-9, 1-16 Virtual Cache Memory Controller 1-9 ZIF socket l-2 Epson NX Service Manual Index-4 l-11, A-17...

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