PowerWaveª PowerWave MT Minitower 120/132/150 Table of Contents PowerWaveª MT Specifications Specifications for the PowerWave MT 120/132/150 ................................................................................Page 2 MLB Diagram ................................................................................................................................................Page 5 CUDA Reset For Your Safety ............................................................................................
CPU PowerPC 604 at 120, 132 or 150MHz Main Logic Board Tsunami (Comparable to a Macintosh 9500) CPU Upgrade Available via daughtercard replacement MacOS 7.5.2, 7.5.3, 7.5.5, 7.6, 7.6.1, 8.0 Memory 8 DIMM slotsÑ168-pin, 64 bit, 60 ns (1.
For Your Safety To ensure your personal safety as well as prevent unnecessary damage to the computer, please follow all safety precautions when performing any service on Power Computing computers. Note: Always make sure that the computer is powered down before attempting any service. To make sure that the computer is completely powered down, check the light behind the power button on the front bezel and make sure that it is off.
The CUDA Reset button is a small red button located on the Main Logic Board. Depressing this button resets the CUDA Microcontroller Chip.
MLB MLB Diagram Diagram 5 CONFIDENTIAL
Removing the Chassis Cover 1. Shut down the computer and turn off all external devices. If you do not have a grounding strap, leave the computer plugged into the wall socket. Leaving the computer plugged in ensures a positive ground. Disconnect everything but the power cord. 2. Remove the large thumb screw from the rear of the computer (see Figure 1: Removing the on page 6). 3. Gently pull the levers on the bottom corners of the cover outward.
3. Reconnect the cables to the machine. CONFIDENTIAL Front Bezel 2. Screw the thumb screw into the rear of the chassis.
Front Bezel Removal/Installation Removing the Front Bezel Cover 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Disengage the top three tabs that secure the bezel to the front of the computer (see Figure 2: Disengage Bezel Tabs on page 9). All of these tabs must be disengaged before the front bezel can be removed.
RAM Bezel Tabs Figure 2: Disengage Bezel Tabs Installing the Front Bezel 1. Connect the necessary wires to their respective ports on the main logic board. 2. Line up the two tabs on the bottom with the chassis and push them in until they click. Lift the top edge of the bezel and line up the tabs with the chassis. Press the top edge of the front bezel until the tabs click into place. 3. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
CPU RAM Removal/Installation Note: All DIMMs must be 168-pin, fast-paged mode, 70-nanosecond RAM access time or faster. The PowerWave has eight DIMM slots near the front on the motherboard. The PowerWave supports memory interleaving. For faster performance, install DIMMs in pairs (slot A1 and B1,etc). Removing RAM 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Lay the computer on its side, open side up. 3.
CPU 2. Lower the DIMM squarely into the slot so that the notches in the DIMM line up with the notches in the slot. Slide the contacts straight into the slot and make sure the contacts are firmly seated. (see Figure 5: Installing RAM on page 11). When properly seated, the contacts on the bottom should not be visible. Figure 5: Installing RAM Note: DonÕt force the DIMM module into the slot; if the MLB starts bending significantly, pull the DIMM out, reposition it, and try again.
CPU Removal/Installation Removing the CPU 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 1. Lay the machine on its side, open side up. 2. Remove the hex-head screw that secures the support beam to the rear of the chassis. 3. Swing the rear end of beam slightly up and out of chassis. Pull the beam towards rear of machine to remove. 4. Place both hands on either side of the CPU card and lift up.
2. Lower the CPU card squarely into the slot so that the notch in the CPU card lines up with the notch in the slot. Slide the contacts straight into the slot and make sure the contacts are firmly seated. (see Figure 9: CPU removal on page 12). When properly seated, the contacts on the bottom should not be visible. Cache the contact edge of the CPU card. Note: DonÕt force the CPU card into the slot; if the MLB starts bending significantly, pull the CPU card out, reposition it, and try again. 3.
Removing the Cache 1. Remove the chassis cover. (refer to Chassis Cover Removal/Installation on page 6). 2. Locate the cache card (refer to MLB Diagram on page 5). Note: The level 2 cache is located between the CPU riser card and the front drive bay assembly. If you believe that the area is too small to adequately grasp the cache card, remove the CPU riser before removing the cache (refer to CPU Removal/Installation on page 12). 3. Place both hands on either side of the L2 cache card and lift up.
PCI Cards Removal/Installation Note: Before you install any expansion cards, be sure that the combined power consumption of the expansion cards does not exceed the limits of the computer. Refer to the documentation that came with the cards you are installing for their power consumption rating and to ÒPower requirementsÓ in the UserÕs Guide for the power consumption limit for this computer. Removing PCI Cards 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2.
Figure 10: Removing PCI slot cover Slot cover screw PCI slot cover 6. Hold the PCI card (contacts facing down) with one hand at each end. Notice that there is a notch in the contact edge of the PCI card. 7. Lower the PCI card squarely into the PCI riser card so that the notch in the PCI card lines up with the notch in the PCI riser card. Slide the contacts straight into the PCI riser card and make sure the contacts are firmly seated. (see Figure 11: PCI card installation on page 16).
8. Connect any wires or cables to the PCI card necessary for its proper operation. 9. Reset the CUDA (refer to CUDA Reset on page 4). 10. Replace the bottom chassis panel. Align the chips on the panelÕs right side with the notches in the chassis. Slide the bottom panel into place and replace the screws on the panelÕs left side. 11. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
PCI Riser Card Removal/Installation Removing the PCI Riser Card 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Locate the riser card (refer to MLB Diagram on page 5). 3. Remove any installed PCI cards (refer to PCI Cards Removal/Installation on page 15). Figure 11: PCI Riser Card Removal 4. Remove the hex-head screw that secures the support beam to the rear of the chassis. 5. Swing the rear end of beam slightly up and out of chassis.
2. Replace the support beam. First, fit the forward end of the stabilizer bar into the two small cutouts in the front panel of the metal case. Then, swing the bar down, aligning it with the riser card and the processor card. Replace the screw that attaches the beam to the back panel. 3. Reset the CUDA (refer to CUDA Reset on page 4). 4. Install the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
Removing the 3.5-inch Drive 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Remove the single screw that secures the drive cage to the back wall of the chassis. The cage will swing up and out away from the computer. Note: Be careful of the wires for the drive that are still connected. Drive Cage retaining screw 3.5-inch internal drive bay Figure 11: Removing a 3.5-inch internal drive bay 3.
4. The drive cage will swing down and into the computer. Replace the screw that secures the drive cage to the back wall of the chassis. 5. Reset the CUDA (refer to CUDA Reset on page 4). 6. Install the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
Removing 5.25-inch Drives 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Disconnect all cables that are attached to the device being removed. (see Figure 12: CDROM Removal on page 22). Figure 12: CDROM Removal Power Connector Sound Connector SCSI Connector 3. Remove the front bezel (refer to Front Bezel Removal/Installation on page 8). 4. Push in the tabs of the side rails and slide the drive forward out of the chassis. Installing 5.25-inch Drives 1.
Drive bay Figure 13: Drive removal Drive retaining screws 3. Reset the CUDA (refer to CUDA Reset on page 4). 4. Install the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
Removing the Floppy Disk Drive 5. Remove the front bezel (refer to Front Bezel Removal/Installation on page 8). 6. Place the computer on its side with the MLB on the bottom and the open side facing up. 7. Unscrew the two screws on the front of the computer located on either side of the floppy disk drive faceplate. Pull the entire floppy disk drive bay toward the rear of the computer until it disengages. Disconnect the components located in the floppy disk drive bay and lay them aside.
Installing the Floppy Disk Drive 1. Slide the drive into the bay and align the holes in the drive with the holes in the bay. 2. Insert two screws on each side of the bay to secure the drive to the bay. The floppy disk drive should protrude about 1.5-inches past the front of the chassis in order to be flush against the front bezel when it is installed. 3. Slide the bay in at a 45¼ angle making sure that the floppy disk drive is properly aligned with the opening on the front of the chassis.
Removal/Installation of MLB Removing the MLB (Main Logic Board) 1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6). 2. Remove the CPU card (refer to Removing the CPU on page 12). 3. Remove the cache card (refer to Removing the Cache on page 14). 4. Remove the PCI card(s) (refer to Removing PCI Cards on page 15). 5. Remove the PCI Riser card (refer to PCI Riser Card Removal/Installation on page 18). 6. Remove the RAM (refer to RAM Removal/Installation on page 10). 7.
Installing the MLB 1. Slide the MLB into the chassis from the bottom. Lay the board flat and align the mounting holes with the posts. 2. Replace the eight screws that secure the MLB to the chassis. 3. Reconnect the cables attached to the MLB. Connect the power cable by pressing the retaining clip facing the front of the computer, then pressing down. Connect all remaining cables to their connectors.
Removal/Installation Removal/Installation of of Power Power Supply Supply Removing the Power Supply 1. Remove the chassis cover. (refer to Chassis Cover Removal/Installation on page 6). 2. Swing the 3.5-inch drive bay out of the way (refer to 3.5-inch Drive Removal/Installation on page 20). 3. Disconnect the logic board power connector from the MLB. The connectors will have red, white, blue, and black wires coming out of them that lead back to the power supply (refer to MLB Diagram on page 5).
¥ the first screw is located above and to the left on the chassis ¥ the second screw is located below and to the left on the chassis ¥ the third screw is located above and to the right on the chassis ¥ the fourth screw is located right below the power plug 3. Connect the power connectors to all internal SCSI devices. 4. Connect the logic board power connector to the MLB. 5. Move the 3.5-inch drive cage back into position (refer to 3.5-inch Drive Removal/Installation on page 20). 6. Reset the CUDA.
This module was written and designed by: Michael Scott Clay. Additional contributions by: Shane Nestle Jeff Pryor Edited by Mark Wood Laurie Veatch This Power Computing module was written, edited and produced on a desktop publishing system using Power Computing system that use the Mac OS. Every effort has been made to ensure that the informationin the module is accurate. Power Computing is not responsible for printing or clerical errors.
