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Monorail NT5100G-16M BD Service Maintenance Manual

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O c t o b e r
1 9 9 7
SERVICE & MAINTENANCE
MANUAL

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Summary of Contents for Monorail NT5100G-16M BD

  • Page 1 O c t o b e r 1 9 9 7 SERVICE & MAINTENANCE MANUAL...
  • Page 2 The information in this document is subject to change without notice. Monorail Inc. makes no warranty of any kind with regard to this material. Monorail shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material.

  • Page 3: Table Of Contents

    Table of Contents Preface, Recommended Materials, and Safety Warning ................4 A. Overall System Detail ......................5 B. Tightening the Computer Stand ....................9 C. Removing Upper Housing ......................9 D. Removing/Replacing/Reinstalling: ..................11 D.1 LCD Panel ..........................11 D.2 Inverter Board ........................12 D.3 Button Board ..........................13 D.4 Speakers ..........................14 D.5 Flex Circuit..........................14 E.

  • Page 4: Preface, Recommended Materials, And Safety Warning

    Safety Warning The interior of the Monorail computer is not a customer access area (open frame power supply and inverter board) and poses a serious risk of electrical shock. Before accessing the interior of the unit, you MUST disconnect the power cord from the A/C plug.

  • Page 5: Overall System Detail

    A. Overall System Detail Detail # Description Detail # Description cam lock inverter board cable and connector cam lock plastic latch (part of system board) cam lock plastic latch hard drive metal lock tab (part of base frame) shoulder screw (hard drive mounting screw) ISA cover plate backlight connector (part of LCD panel)* floppy disk drive...
  • Page 6 Diagram 1 lock tab Diagram 2 cover S E R V I C E M A N U A L...
  • Page 7 Diagram 3 (14 not shown) Diagram 4 32, 33 m o n o r a i l...
  • Page 8 Diagram 5 System 26– 31 Board 32, 33 25, 44 51, 52 S E R V I C E M A N U A L...

  • Page 9: Tightening The Computer Stand

    B. Tightening the Figure 1 Computer Stand See Figure 1. If the computer stand is loose, use a screwdriver to turn the screw (Detail 62) on each side of the stand a quarter turn. If the display still seems too loose, repeat this procedure until desired friction is achieved.
  • Page 10 lock tab Figure 2a cover Step 3 Remove the 6 black pan-head torx screws with a T-15 driver, as shown in Figure 2a. Step 4 See Figure 3. Carefully position the unit so that the LCD panel (Detail 7) is face up. Avoid bending the metal lock tab (Detail 4) on the back of the unit.

  • Page 11: Removing/Replacing/Reinstalling

    D. Removing/ Figure 4 Replacing/Reinstalling: Warning: Before accessing the interior of the unit, you must disconnect the power cord from the A/C plug. D.1 LCD Panel Step 1 See Figure 4. Remove the dual pin connector(s) (Detail 5) from the inverter board (Detail 6).

  • Page 12: Inverter Board

    D.2 Inverter Board Figure 5 Warning: Before accessing the interior of the unit, you must disconnect the power cord from the A/C plug. Step 1 Refer to Figure 5. Disconnect the dual pin connector(s) (Detail 5) and the inverter board cable (Detail 9). Step 2 Tape Refer to Figure 6.

  • Page 13: Button Board

    D.3 Button Board* Figure 7 Step 1 Refer to Figure 7. Remove the micro- phone boot (Detail 10) at the top of the button board (Detail 12). Step 2 Disconnect the button board cable (Detail 11) in the corner of the button board (Detail 12).

  • Page 14: Speakers

    D.4 Speakers* (speakers facing up) Figure 8 Step 1 Refer to Figure 8. Press the top snap on each speaker holder (Detail 15) and remove the speaker holders from the LCD support (Detail 13). Step 2 To access the system board, see Section E. Step 3 Refer to Figures 9 and 10.

  • Page 15: Accessing The Internal Components

    E. Accessing the Internal Figure 12 Components E.1 Separating the LCD Support and Base Frame Step 1 Remove the four T-15 screws from the LCD support (Detail 13) using a T-15 driver. Step 2 Refer to Figures 13 and 13a. Separate the LCD support (Detail 13) from the unit by applying pressure at Figure 12a the point (Detail 23) shown.

  • Page 16: Processor Chip

    E.2 Processor Chip Figure 16 NOTE: First perform Section E.1 ( Separating the Base Frame and LCD Support ) before proceeding. Step 1 See Figure 16. Unhook one edge of the heat sink clip (Detail 26) from the ZIF socket (Detail 27) and remove it. NOTE: One type of clip/heat sink is shown;...

  • Page 17: Jumper Settings

    NOTE: MMX processors require a MMX compatible system board. The MMX system board is identified by a VRM (Voltage Regulator Module) adapter board located to the left of the microprocessor. Diagram 6 Model: NT5100G-16M BD Monorail System Board Jumper Settings CMOS MEMORY Rockwell CMOS Disposition...

  • Page 18: Expansion System Memory

    E.4 Expansion System Memory Warning: Before accessing the interior of the unit, you must disconnect the power cord from the A/C plug. NOTE: First perform Section E.1 ( Separating the Base Frame and LCD Support ) before proceeding. Installing See Figures 17, 18, and 18a. The system memory must be upgraded with two SIMM modules (Detail 32) of the same type.

  • Page 19: Video Memory

    E.5 Video Memory Step 1 See Figure 19. Visually inspect the video memory chip (Detail 69) so that you can orient it with pin 1 of the socket (identified by a bevel in the corner). Step 2 Align the pins and press into place with thumb pressure until seated.

  • Page 20: Removing The System Board

    Figure 20 E.6 Removing the System Board from the LCD Support Assembly Warning: Before accessing the interior of the unit, you must disconnect the power cord from the A/C plug. NOTE: Refer to Section E (Separating the Base Frame and LCD support) before proceeding.

  • Page 21: Hard Drive

    Position the base frame assembly so that the floppy drive (Detail 42) is in the lower right corner. See Figure 23. Using a T-15 driver, remove the screw (Detail 45) that secures both the Monorail ISA custom mounting tab (Detail 46) and the ISA cover plate (Detail 41).

  • Page 22: Power Supply

    Step 2 See Figure 24b. Using a T-15 driver, Figure 24 Figure 24a fasten the Monorail custom ISA mount- ing tab (Detail 46) to the computer base frame using the 6-32 (Detail 45) pan head screw that was removed to fasten in the factory installed plate (Detail 47 on page 21).

  • Page 23: Floppy Drive

    E.10 FLOPPY DRIVE Figure 26 NOTE: First perform Section E.1 ( Separating the Base Frame and LCD Support ) before proceeding. Step 1 Slide out the floppy drive (Detail 42) mounted to the floppy drive plate (Detail 70), as shown in Figure 15. Step 2 Disconnect the floppy power cable (Detail 54), as shown in Figure 25a, and the floppy data cable (Detail 55), as...

  • Page 24: Cd Rom

    Figure 27 E.11 CD ROM NOTE: First perform Section E.1 ( Separating the Base Frame and LCD Support ) before proceeding. Step 1 See Figure 15 and Figure 27. Slide the CD ROM (Detail 56) and disconnect the CD ROM power cable (Detail 53), CD ROM audio cable (Detail 57), and CD ROM data cable (Detail 58).

  • Page 25: Fan

    E.12 Fan Figure 28 NOTE: First perform Section E.1 ( Separating the Base Frame and LCD Support ) before proceeding. Step 1 Disconnect the power connector from the I/O board (Detail 25). Step 2 See Figure 28. Remove the 4 screws in each corner of the fan using a T-10 driver.

  • Page 26: Reconnecting The Base Frame And Lcd Support

    F. Reconnecting the Base Frame and the LCD Support Step 1 See Diagram 4 on page 7 and Diagram 5 on page 8. Be sure to reconnect all of the following cables in the same manner as were previously installed: floppy data (Detail 55) CD ROM data (Detail 58) main system power (Detail 61)

  • Page 27: Accessing System Bios

    NOTE: The BIOS has been optimally configured for your Monorail PC. Delete Key Press the Delete key within 1 second of the Monorail splash screen appearing upon boot-up. The Delete key allows access to the BIOS setup and parameters. End Key Press the End key immediately upon cold reboot to reset the BIOS to optimal settings.

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