Power Computing PowerCenter Pro Low Profile 180/210 User manual

CONFIDENTIAL
1
PowerCenter
ª
Pro
PowerCenter
ª
Pro
Certification Module
Certification Module
PowerCenter Pro Low Profile 180/210
PowerCenter
ª
Pro LP Specifications
Specifications for the PowerCenter Pro LP 180/210................................................................................Page 2
MLB Diagram ................................................................................................................................................Page 5
CUDA Reset
For Your Safety .............................................................................................................................................Page 3
Purpose of CUDA Reset...............................................................................................................................Page 4
Bezel Removal/Installation
Removing and installing the chassis cover................................................................................................Page 6
Removing and installing the front bezel....................................................................................................Page 7
Board Removal/Installation Procedures
Removing and installing RAM.....................................................................................................................Page 9
Removing and installing CPU card...........................................................................................................Page 11
Removing and installing L2 cache............................................................................................................Page 13
Removing and installing PCI expansion cards........................................................................................Page 14
Removing and installing PCI Riser card...................................................................................................Page 17
Removing and installing Adaptec SCSI Card ..........................................................................................Page 19
Drive Removal/Installation Procedures
Removing and installing drives in the 5.25-inch drive bay....................................................................Page 22
Removing and installing the floppy drive................................................................................................Page 24
System Level Removal/Installation Procedures
Removing and installing the MLB.............................................................................................................Page 26
Removing and installing the power supply ............................................................................................Page 28
Table of Contents
Table of Contents
Table of Contents

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PowerCenter LP Specifications
CPU PowerPC 604e at 180MHz or 210MHz
Main Logic Board Catalyst (Comparable to a Macintosh 7200)
CPU Upgrade Available via daughtercard replacement
MacOS 7.5.3, 7.5.5, 7.6, 7.6.1
Memory 4 DIMM slotsÑ168-pin, 64 bit, 60 ns (512 Mb max); Memory interleaving not
supported
Cache 1MB Level 2
SCSI SCSI-2, 5 MB/sec data transfer rate, built-in; UltraSCSI, 20 MB/sec data transfer
rate via Adaptec PCI card (supports the internal hard drive only)
Serial Ports High speed GeoPort-compatible 9-pin modem and printer ports
Network Built-in Ethernet AAUI port; Built-in Ethernet 10 Base-T port;
LocalTalk serial connection via modem or printer port
Bus Expansion Three PCI expansion slots (one slot filled with Adaptec UltraSCSI card)
Floppy Drive One 3.5-inch, 1.4MB floppy disk drive. Supports MacOS, Windows, DOS, OS/2
and ProDOS disk formats.
Video Internal video on PCI Riser card: 3D ATI Xclaim GT chip set
2MB or 4MB VRAM; Mac/SVGA connections
Audio 16 bit, 44.1 KHz Stereo in/out connections (microphone port requires line-level
input, such as AppleÕs Plaintalk Microphone); Built-in speaker
ROM Removeable Apple ROM
Case style Low Profile
Drive Bays One front accessible, full-height 5.25-inch drive bay
Dimensions 16.8"(W) X 4.4"(H) X 16"(D); 21 lb (9.5 kg)
Power Supply 145W, 100V-240V (Domestic/International manual switching)
PowerCenter Pro LP Specifications
PowerCenter Pro LP Specifications

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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.
NN
NNoo oott ttee ee
: 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.
Preventing ESD (Electrostatic Discharge) - There are two means by which a technician can maintain a
ground and eliminate ESD:
¥ wear an ESD wrist strap that is grounded to the computer
¥ power down the computer, but leave the CPU power cord plugged into the wall socket; touch the
metal case of the power supply to ensure complete static discharge before service.
Do not wear loose clothing or jewelry that may become caught in the components inside of the
computer case.
Make sure that the work environment is free from excessive moisture. Any moisture on the components
of the computer may cause damage.
For Your Safety
For Your Safety
If you need further assistance, please call:
1-800-708-6227

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The CUDA Reset button is a small red button located on the Main Logic Board. Depressing this button
resets the CUDA Microcontroller Chip. This chip is responsible for the following functions:
¥ Turns system power on and off
¥ Manages system resets from various commands
¥ Maintains parameter RAM
¥ Manages the Apple Desktop Bus (ADB)
¥ Manages the real-time clock
¥ Lets an external signal from either Apple GeoPort serial port control system power
It is rarely necessary to reset CUDA, but many problems that appear to be hardware related can be fixed
by doing so. Resetting CUDA will not harm the machine in any way. Some of the most common reasons
to reset CUDA are:
¥ After adding RAM, the machine will not boot, RAM does not show up in the memory control panel,etc.
¥ Machine will not power up
¥ Machine powers up, but does not chime or boot
¥ A serial port remains inaccessible even after booting without extensions, resetting parameter RAM, etc.
¥ Machine will power down for no apparent reason
¥ After adding any hardware to the inside of the machine
Resetting CUDA
1. Shut down the computer and disconnect all external devices, but leave the power cable plugged in to
ground the computer.
2. Remove the cover ( refer to Chassis Cover Removal/Installation on page 6).
3. Touch the metal chassis of the machine. This will dissipate static electricity into ground.
4. Locate the CUDA Reset button (
refer to MLB Diagram on page 5).
5. Press the CUDA Reset button for a few seconds.
6. Reboot, and verify resolution of the problem you wanted to solve.
NN
NNoo oott ttee ee::::
Resetting the CUDA will cause some system settings to default to factory settings.
CUDA Reset
CUDA Reset
CUDA Reset

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MLB DIAGRAM
MLB DIAGRAM
MLB Diagram
MLB

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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. Locate and remove the three screws on the back of the computer that affix the case to the back of the
machine.
(see Figure 1: Removing the chassis cover on page 6).
3. Slide the cover towards the back of the machine and lift off.
Installing the Chassis Cover
1. Standing at the front of the machine, place the front edge of the cover under the front bezel with the
back edge tilted toward you.
2. Place the back end of the cover down and slide the cover forward.
3. Screw the thumb screws into the appropriate holes in the rear of the machine and reconnect the
cables to the back of the machine.
Chassis Cover Removal/Installation
Chassis Cover Removal/Installation
Figure 1: Removing the chassis cover
thumb screws
Chassis Cover

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Removing the Front Bezel Cover
1. Remove the chassis cover ( refer to Chassis Cover Removal/Installation on page 6).
2. Remove the floppy disk drive. ( refer to Removing the Floppy Disk Drive on page 24).
3. Remove the screw located behind the front of the chassis. It is centered under the top lip of the chassis
against the 5.25-inch drive bay.
4. Disengage the top three tabs that secure the bezel to the front of the computer
(see Figure 2:
Disengage Bezel Tabs
on page 7). All three of these tabs must be disengaged before the front bezel can
be removed. The tabs are located on the inside of the chassis frame:
¥ one is on the left end of the chassis (flat)
¥ one is on the right end of the chassis (round)
¥ one is at the top edge and located immediately to the left of the floppy drive cutout. (flat)
The top of the front bezel will disengage and rotate forward. Gently pull the bezel directly forward to
disengage the remaining bottom 3 tabs. The bezel will then lay face down directly in front of the chassis.
5. Disengage the wiring between the chassis and the front bezel.
Front Bezel Removal/Installation
Front Bezel Removal/Installation
Figure 2: Disengage
Bezel Tabs
bezel tabs (on back of bezel)
Front Bezel

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Installing the Front Bezel
1. Connect the bezel wires to their respective ports on the main logic board.
2. Line up the bottom three tabs and push them in until they click. Lift the top edge of the bezel and line
up the tabs. Press the top edge of the front bezel until the tabs click into place..
3. Install the floppy drive (
refer to Floppy Disk Drive Removal/Installation on page 24).
4. Replace the chassis cover ( refer to Chassis Cover Removal/Installation on page 6).

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NN
NNoo oott ttee ee::::
All DIMMs must be 168-pin, fast-paged mode, 60-nanosecond RAM access time or faster. The
PowerCenter has four DIMM slots near the front on the motherboard. DIMMs may be installed in
any slot.
Removing RAM
1. Remove the chassis cover ( refer to Chassis Cover Removal/Installation on page 6).
2. Locate the DIMM(s) you would like to remove
(see Figure 3: on page 9). Loosen the desired DIMM
module by reaching in and pushing down on the small lever at the end of the DIMM slot. (see Figure 4:
Removing RAM on page 9). The DIMM should pop loose from the slot at the lever end.
3. Grasp the DIMM module on each end and evenly pull the module up and out of the slot.
Installing RAM
1. Hold the module (with the contacts down) with one hand at each end. Notice that there are two
notches in the contact edge of the DIMM module.
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 10). When properly seated, the contacts on the bottom should not be visible.
RAM Removal/Installation
RAM Removal/Installation
Figure 3:
DIMM slot
location
Figure 4: Removing RAM
DIMM Slots
RAM

CONFIDENTIAL 10
NN
NNoo oott ttee ee:::: DonÕt force the DIMM module into the slot; if the MLB starts bending significantly, pull the
DIMM out, reposition it, and try again. If the DIMM module is seated correctly, the lever at the
end of the DIMM slot should be completely raised.
3. Reset the CUDA (refer to CUDA Reset on page 4).
4. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
Figure 5: Installing RAM
CPU

CONFIDENTIAL 11
Removing the CPU
1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
2. Remove the retaining clips that secure the CPU to the support beam.
3. Place both hands on either side of the CPU card and lift up. Sometimes a gentle rocking motion from
end to end (not side to side) will make it easier to remove the CPU card.
Installing the CPU
1. Hold the CPU card (contacts facing down) with one hand at each end. Notice that there is a notch in
the contact edge of the CPU card.
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 in the slot.
(see Figure 9: CPU removal on page 11). When properly seated, the contacts on the bottom should not
CPU Removal/Installation
CPU Removal/Installation
Figure 9: CPU removal CPU retainer clips
CPU

CONFIDENTIAL 12
be visible.
NN
NNoo oott ttee ee:::: 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. Replace the retaining clips that secure the CPU to the support beam.
4. Reset the CUDA (refer to CUDA Reset on page 4).
5. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).

CONFIDENTIAL 13
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).
NN
NNoo oott ttee ee:::: 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 11).)
3. Place both hands on either side of the L2 cache card and lift up. Because the L2 cache is held in by a
tight pressure fit, sometimes a gentle rocking motion from end to end (not side to side) will make it
easier to remove the cache card.
Installing the Cache
1. Hold the L2 cache card (contacts facing down) with one hand at each end. Notice that there are
notches in the contact edge of the L2 cache card.
2. Lower the L2 cache card squarely into the slot so that the notches in the L2 cache card line up with the
notches in the slot. Slide the contacts straight into the slot and make sure the contacts are firmly
seated. When properly seated, the contacts on the bottom should not be visible.
NN
NNoo oott ttee ee:::: DonÕt force the L2 cache card into the slot; if the MLB starts bending significantly, pull the L2
cache card out, reposition it, and try again.
4. Reset the CUDA (refer to CUDA Reset on page 4).
5. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
Cache Removal/Installation
Cache Removal/Installation
CPU

CONFIDENTIAL
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NN
NNoo oott ttee ee:::: 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. Disconnect any cables that may be attached to the PCI card.
3. Remove the screw attaching the PCI card to the inside of the chassis.
4. Firmly grasp the PCI card and pull it straight out of the computer laterally. Be careful not to damage any
components that may be protruding through the I/O slot. Sometimes a gentle rocking motion from
end to end (not side to side)will make it easier to remove the PCI card.
Installing PCI Cards
1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
2. Remove the retaining screw of the metal I/O slot cover from the slot you wish to use. (see Figure 10:
Removing PCI slot cover on page 15).
3. Pull the I/O slot cover out the side so that the tongue at the bottom of the cover slides out of the slot in
the chassis.
PCI Card Removal/Installation
PCI Card Removal/Installation
PCI Cards

CONFIDENTIAL 15
4. 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.
5. 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 15). When properly seated,
the contacts on the bottom should not be visible. Secure the PCI card to the chassis with the retaining
screw.
NN
NNoo oott ttee ee:::: DonÕt force the PCI card into the slot; if the PCI riser card starts bending significantly, pull the
PCI card out, reposition it, and try again.
Slot cover screw
PCI slot cover
PCI slot
Figure 10: Removing PCI
slot cover
Figure 11: PCI card
installation
PCI card
Slot cover screw

CONFIDENTIAL
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6. Connect any wires or cables to the PCI card that are necessary for its proper operation.
7. Reset the CUDA (refer to CUDA Reset on page 4).
8. Replace the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
PCI Cards

CONFIDENTIAL
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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 Card Removal/Installation on page 14).
4. Remove the floppy drive (refer to Floppy Disk Drive Removal/Installation on page 24).
5. Remove the two screws that attach the riser card to the support beam.
6. Remove the hex-head screw that secures the support beam to the rear of the chassis.
7. Swing rear end of beam slightly up and out of chassis. Pull beam towards rear of machine to remove.
8. Firmly grasp the PCI riser card and pull it straight out of the computer. Sometimes a gentle rocking
motion from end to end (not side to side) will make it easier to remove the PCI risercard.
Installing the PCI Riser Card
PCI Riser Card Removal/Installation
PCI Riser Card Removal/Installation
Figure 11:
PCI Riser Card
removal

CONFIDENTIAL 18
1. Lower the PCI riser card squarely into the PCI slot so that the notch in the PCI card lines up with the
notch in the PCI slot. Slide the contacts straight into the PCI slot and make sure the contacts are firmly
seated. When properly seated, the contacts on the bottom should not be visible.
2. Replace the support beam. First, fit the forward end of the stabalizer bar into the two small cut-outs in
the front panel of the metal case . Then, swing the bar down, aligning it with the riser card and the
processor card.
3. Replace the screw that attaches the beam to the back panel.
4. Replace the screws securing the PCI riser card to the support beam.
5. Replace the floppy drive (refer to Floppy Disk Drive Removal/Installation on page 24).
6. Reset the CUDA (refer to CUDA Reset on page 4).
7. Install the chassis cover (refer to Chassis Cover Removal/Installation on page 6).

CONFIDENTIAL
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Removing the Adaptec SCSI Card
1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
2. Disconnect any cables that may be attached to the Adaptec SCSI card.
3. Remove the screw attaching the Adaptec SCSI card to the inside of the chassis.
4. Firmly grasp the Adaptec SCSI card and pull it straight out of the computer laterally. Be careful not to
damage any components that may be protruding through the I/O slot. Sometimes a gentle rocking
motion from end to end (not side to side)will make it easier to remove the card.
Installing the Adaptec SCSI Card
1. Remove the chassis cover (refer to Chassis Cover Removal/Installation on page 6).
2. Remove the retaining screw of the metal I/O slot cover from the slot you wish to use. (see Figure 12:
Removing PCI slot cover on page 20).
3. Pull the I/O slot cover out the side so that the tongue at the bottom of the cover slides out of the slot in
the chassis.
Adaptec SCSI Card Removal/Installation
Adaptec SCSI Card Removal/Installation

CONFIDENTIAL
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4. Hold the Adaptec SCSI card (contacts facing down) with one hand at each end. Notice that there is a
notch in the contact edge of the PCI card.
5. Lower the Adaptec SCSI 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 13: Adaptec card installation on page 20). When properly
seated, the contacts on the bottom should not be visible. Secure the PCI card to the chassis with the
retaining screw.
NN
NNoo oott ttee ee:::: DonÕt force the PCI card into the slot; if the PCI riser card starts bending significantly, pull the
PCI card out, reposition it, and try again.
Slot cover screw
PCI slot cover
PCI slot
Figure 12: Removing PCI
slot cover
Figure 13: Adaptec
card installation
PCI card
Slot cover screw
5.25-inch Drive