Motorola 660AV User Manual

K

Service Source

Centris 660AV/Quadra

660AV

K

Service Source

Basics

Centris 660AV/Quadra 660AV

Basics Overview - 2

Overview

This manual includes
complete repair procedures
for the Centris 660AV and
Quadra 660AV shown at left.

Figure: Centris 660AV and Quadra 660AV

K

Service Source

Specifications

Centris 660AV/Quadra 660AV

Specifications Processors - 1

Processors

Processor

Addressing

Direct Memory Access (DMA)

Motorola 68040
25 MHz
Built-in paged memory management unit (PMMU), floating point

unit (FPU), and 8K memory cache

32-bit registers
32-bit address/data bus

A Peripheral Subsystem Controller (PSC) provides direct

memory access (DMA) between the 68040 buses and
peripheral devices

Specifications Processors - 2

Digital Signal Processor (DSP)

AT&T DSP3210 32-bit floating-point digital signal processor
Supports real-time tasks such as speech recognition, audio

compression, and analog modem signal processing.

Specifications Memory - 3

Memory

RAM

ROM

PRAM

8 MB (4 MB soldered DRAM plus 4 MB SIMM) standard,

expandable to 68 MB
72-pin SIMMs
70 ns access time

1 MB soldered on logic board

256 bytes of parameter memory

Specifications Memory - 4

VRAM

Clock/Calendar Calendar

1 MB (two banks of 512K VRAM soldered on board)

Maximum pixel depths for graphics:

• 12-inch RGB (512 x 384) 24 bits per pixel

• 13/14-inch RGB (640 x 480) 16 bits per pixel

• 12-inch monochrome (640 x 480) 8 bits per pixel

• 15-inch portrait (640 x 870) - 8 bits per pixel

• 16-inch RGB (832 x 624) - 16 bits per pixel

• 19-inch RGB (1024 x 768) - 8 bits per pixel

• 21-inch monochrome (1152 x 870) - 8 bits per pixel

• 21-inch RGB (1152 x 870) - 8 bits per pixel

• VGA (640 x 480) - 16 bits per pixel

• SVGA (800 x 600) - 16 bits per pixel

CMOS custom chip with long-life lithium battery

Specifications Disk Storage - 5

Disk Storage

Floppy Drive

Hard Drive

CD-ROM

1.4 MB Apple SuperDrive

3.5 in., internal 80 or 500 MB hard drive

Optional internal 5.25 in. CD-ROM drive

Specifications I/O Interfaces - 6

I/O Interfaces

Expansion Slot

SCSI

Apple Desktop Bus

Expansion Slot

Internal expansion slot supports either NuBus, processor-direct

slot (PDS) card, or digital audio/video expansion (DAVE) card

(with appropriate adapter)

One SCSI port; DB-25 connector
Supports a maximum of six external devices (internal SCSI

devices include the computer, which is always device 7)

Two Apple Desktop Bus (ADB) ports for keyboard, mouse, and

low-speed input devices; mini DIN-4 connectors

Internal expansion slot supports either a processor-direct slot

card or 7-inch NuBus card (with appropriate adapter)

Specifications I/O Interfaces - 7

Serial

High-Performance Serial Port (Modem Port)

Ethernet

Two RS-232/RS-422 serial ports
One mini DIN-8 port
One mini DIN-9 high performance modem port

230.4 Kbps maximum

Supports connection to analog, PBX, ISDN, facsimile (FAX), and

data telephone lines
Provides full-duplex telephone I/O at up to 14.4 Kbps
AppleTalk and V.22, V22.bis, V.29, and V.32 modem protocols

supported
Supports Apple HiPPort protocols

0.92 Mbps maximum, clocked externally

One Ethernet port; AUI-15 connector

Specifications I/O Interfaces - 8

Audio

Video

Composite Video

S-video

One 16-bit stereo output port; one 16-bit stereo input port;

stereo mini phone jack connectors
Sample rates up to 48 kHz (44.1 kHz standard rate)
Uses the digital signal processor (DSP) chip
Supports stereo audio from internal CD drive

Video monitor port; DB-15 connector
Supports Apple monitors (up to 16 bits), NTSC, and PAL monitors
Supports VGA and SVGA monitors (with adapter cables)

Input port; RCA phono connector
Output port; RCA phono connector

Input port; DIN-7 connector
Output port; DIN-4 connector

Specifications I/O Devices - 9

I/O Devices

Keyboard

Mouse

Microphone

Standard, extended, or adjustable keyboard connected through two

ADB ports
Maximum power draw for all ADB devices: 500 mA
Keyboard draws 25-80 mA

ADB Mouse II; mechanical tracking optical shaft or contact

encoding (low power)
Draws up to 80 mA

Optional electret, omnidirectional microphone
Microphone output voltage is 4 mV peak to peak at normal value
Mini phone plug connector

Specifications Sound and Video - 10

Sound and Video

Sound Generator

Video

Enhanced Apple sound chip (EASC), including four-voice wave

table synthesis and stereo sampling generator capable of

driving stereo mini phone-jack headphones or stereo

equipment

Built-in VRAM video support for all Apple monitors (requires an

adapter for 21 in. monitors)
Supports many types of NTSC, PAL, VGA

Specifications Electrical - 11

Electrical

A/C Line Voltage

Frequency

Power

100-240 VAC

50-60 Hz
86 W

CMOS custom chip with long-life lithium battery

Specifications Physical - 12

Physical

Dimensions

Weight

Height: 3.4 in. (8.5 cm)
Width: 16.3 in. (41.5cm)
Depth: 15.6 in (39.7 cm)

14.0 lbs (6.4 kg) (weight varies based on internal devices

installed)

Specifications Environmental - 13

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

Altitude

10-40° C (50-104 ° F)

-40 to 47° C (-40 F to 116.6° F)

Operating: 10-90% (noncondensing)

0-10,000 ft. (3,048 m)

K

Service Source

Troubleshooting

Centris 660AV/Quadra 660AV

Troubleshooting General/ - 1

General

The Symptom Charts included in this chapter will help you
diagnose specific symptoms related to your product. Because cures
are listed on the charts in the order of most likely solution, try
the first cure first. Verify whether or not the product continues to
exhibit the symptom. If the symptom persists, try the next cure.
(Note: If you have replaced a module, reinstall the original module
before you proceed to the next cure.)

If you are not sure what the problem is, or if the Symptom Charts
do not resolve the problem, refer to the Flowchart for the product
family.

For additional assistance, contact Apple Technical Support.

Troubleshooting Symptom Charts/Error Chords - 2

Symptom Charts

Error Chords

One-part error
chord sounds during
startup sequence

Two-part error chord
sounds during
startup sequence

1 Disconnect SCSI data cable and hard drive power cable.

Reboot system. If startup sequence is normal, run Macintosh
Hard Disk Test and replace hard drive, if necessary.

2 Disconnect floppy drive cable connector and reboot system. If

startup sequence is normal, replace floppy drive.

3 Replace logic board. Retain customer’s SIMMs.

1 Replace DRAM SIMMs.
2 Replace logic board. Retain customer’s SIMMs.
3 Perform DRAM SIMM verification on replacement logic

board.

Troubleshooting Symptom Charts/System - 3

System

Does not power on,
screen is black, fan is
not running, and LED
is not lit

Clicking, Chirping, or
thumping

1 Check cables.
2 Plug monitor directly into wall socket and verify that

monitor has power.
3 Remove third-party RAM and cards.
4 Replace power cord.
5 Replace power supply.
6 Replace logic board. Retain customer’s SIMMs.

1 Replace power supply.
2 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts/System

(Continued)

- 4

System shuts down
intermittently

System
intermittently
crashes or locks up

System

1 Make sure air vents are clear. Thermal protection circuitry

2 Replace power cord.
3 Check battery. Refer to “Battery
4 Verification” in Additional Procedures.
5 Replace power supply.
6 Replace logic board. Retain customer’s SIMMs.

1 Verify that system software is correct version.
2 Disconnect external SCSI devices.
3 Verify that application software is known-good.
4 Replace SIMMs.
5 Replace logic board. Retain customer’s SIMMs.
6 Replace power supply.

(Continued)

may shut down system. After 30 to 40 minutes, system

should be OK.

Troubleshooting Symptom Charts/Floppy Drive - 5

Floppy Drive

Audio and video
present, but internal
floppy drive does not
operate

Disk ejects, display
shows icon with
blinking “X”

1 Replace disk with known-good.
2 Verify that all external SCSI devices
3 are disconnected.
4 Replace floppy drive cable.
5 Replace floppy drive.
6 Replace logic board. Retain customer’s SIMMs.
7 Replace power supply.

1 Replace disk with known-good system disk.
2 Replace internal floppy drive cable.
3 Replace internal floppy drive.
4 Replace logic board. Retain customer’s SIMMs

Troubleshooting Symptom Charts/Floppy Drive

(Continued)

- 6

Floppy Drive

Does not eject disk 1 Switch off computer. Hold mouse button down while you

switch computer on.
2 Replace floppy drive cable
3 Replace internal floppy drive.
4 Replace logic board. Retain customer’s SIMMs

Attempt to eject disk,
but doesn’t

1 Push disk completely in.
2 Reseat floppy drive bezel and drive so bezel slot aligns

correctly with drive.
3 Eject disk manually.
4 Replace floppy drive.

(Continued)

Troubleshooting Symptom Charts/Floppy Drive

(Continued)

- 7

MS-DOS drive does
not recognize disk
formatted on 1.4 MB
drive

Internal floppy drive
runs continuously

Floppy Drive

1 To read and write files with either MS-DOS or 1.4 MB drive,

format all disks with MS-DOS drive first.
2 Verify the software is loaded.

1 Replace disk with known-good system disk.
2 Remove external SCSI devices.
3 Replace internal floppy drive cable.
4 Replace internal floppy drive.
5 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts/Video - 8

Video

Screen is black, audio
and at least one drive
operate, fan is
running, and LED is
lit

1 Adjust brightness. See Adjustments chapter in appropriate

monitor manual.
2 Check cables.
3 Verify that monitor is switched on.
4 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome To Macintosh”

appears.
5 Replace video cable.
6 Replace monitor. Refer to appropriate monitor manual to

troubleshoot defective monitor.
7 Replace video card, if present
8 Replace SIMMs.
9 Replace logic board. Retain customer’s SIMMs.
10 Replace power supply.

Troubleshooting Symptom Charts/Video

(Continued)

- 9

Screen is black, audio
and drive do not
operate, but fan is
running and LED is lit

Partial or whole
screen is bright and
audio is present, but
no video information
is visible

Video

1 Remove peripherals and cards.
2 Remove expansion card.
3 Replace DRAM SIMMs. See Memory
4 manual.
5 Replace power supply.
6 Replace logic board.

1 Replace monitor. Refer to appropriate monitor manual to

2 Replace video cable.
3 Replace video card, if installed.
4 Clear parameter RAM. Hold down <Command> <Option> <P>

5 Replace logic board. Retain customer’s SIMMs.

(Continued)

troubleshoot defective monitor.

<R> during startup but before “Welcome To Macintosh”

appears.

Troubleshooting Symptom Charts/Hard Drive - 10

Hard Drive

Internal hard drive
will not operate;
drive doesn’t spin

Drive does not appear
on the desktop

1 Replace SCSI data cable.
2 Replace hard drive.
3 Replace power supply.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify that there are no duplicate SCSI device addresses.
2 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome To Macintosh”

appears.
3 Verify that drive is initialized. If it isn’t, use “HD SC Setup”

to initialize drive.
4 Replace SCSI data cable.
5 Replace hard drive.

Troubleshooting Symptom Charts/Hard Drive

(Continued)

- 11

Works with internal
or external SCSI
devices but not with
both

Hard Drive

1 Verify that there are no duplicate SCSI device addresses.
2 Replace terminator on external device.
3 Replace external SCSI data cables.
4 Refer to appropriate manual to troubleshoot defective

external device.

(Continued)

Troubleshooting Symptom Charts/CD-ROM drive - 12

CD-ROM drive

CD-ROM drive does
not accept a compact
disc

Macintosh does not
display CD-ROM
drive icon

Compact disc won’t
eject from the drive

1 Exchange disc (if disc is dirty or damaged).
2 Verify that CD-ROM carrier is installed properly.
3 Replace CD-ROM drive mechanism.

1 Verify that CD-ROM extension is in System Folder.
2 Replace SCSI data cable.
3 Replace CD-ROM drive mechanism.
4 Replace logic board.

1 Manually eject the compact disc.
2 Press the eject button behind the front bezel (if it is

accessible).
3 Replace the CD-ROM drive mechanism.

Troubleshooting Symptom Charts/Peripheral - 13

Peripheral

Cursor does not move 1 Check mouse connection.

2 Inspect inside of mouse for buildup of dirt or other

contaminants. Clean mouse if necessary.
3 If mouse was connected to keyboard, connect it to computer

ADB port instead. If mouse works, replace keyboard or ADB

cable.
4 If mouse does not work in any ADB port on computer, replace

mouse.
5 Replace logic board. Retain customer’s SIMMs.

Cursor moves, but
clicking mouse
button has no effect

1 Replace mouse.
2 Replace logic board. Retain customer’s SIMMs.

Troubleshooting Symptom Charts/Peripheral

(Continued)

- 14

Cannot double-click
to open application,
disk, or server

No response to any
key on keyboard

Peripheral

1 Remove duplicate System files from
2 hard drive.
3 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> during startup but before “Welcome to Macintosh”

appears.
4 If mouse was connected to keyboard, connect mouse to

computer ADB port instead. If mouse works, replace

keyboard or ADB cable.
5 If mouse does not work in any ADB port on computer, replace

mouse.
6 Replace logic board. Retain customer’s SIMMs.

1 Check keyboard connection to ADB port.
2 Replace keyboard cable.
3 Replace keyboard.
4 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts/Peripheral

(Continued)

- 15

Known-good serial
printer will not print

Known-good printer
on a network will not
print

Peripheral

1 Verify that system software is correct version.
2 Make sure Chooser and Control Panel settings are correct.
3 Replace printer interface cable.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify that system software is correct version.
2 Make sure Chooser and Control Panel settings are correct.
3 Refer to Networks manual.
4 Replace logic board. Retain customer’s SIMMs.

(Continued)

Troubleshooting Symptom Charts/Miscellaneous - 16

Miscellaneous

No sound from
speaker

Sound from external
video source does not
record or play
through speakers

1 Verify that volume setting in Control Panel is 1 or above.
2 Check speaker cable.
3 Replace speaker.
4 Replace logic board. Retain customer’s SIMMs.

1 Verify that audio cable connects sound source to sound input

port when using S-video.
2 Check speaker cable.
3 Replace speaker.
4 Replace logic board. Retain customer’s SIMMs.

K

Service Source

T ak e Apart

Centris 660AV/Quadra 660AV

Take Apart Top Cover - 1

Top Cover

Tab

Tab

Top Cover

No preliminary steps are
required before you begin
this procedure.

1 Press up on the tabs at

the back of the top cover.

2 Tilt the back of the top

cover and remove the top
cover.

Take Apart Power Supply - 2

Power Supply

Power Supply

Before you begin, do the
following:

• remove the top cover.

• Review the ESD
precautions in Bulletins/
Safety.

Take Apart Power Supply - 3

1 Remove the screw that

secures the power
supply.

Power Supply

Take Apart Power Supply - 4

Power Supply

Tab

2 For easier access to the

power supply, release
the floppy drive
mounting tabs. Slide the
floppy drive forward a
few inches.

Floppy
Drive

Take Apart Power Supply - 5

3 If a CD-ROM drive is

CD-ROM Audio Cable

present, disconnect the
SCSI data cable and CD­ROM drive power cable
from the CD-ROM drive.

4 Disconnect the CD-ROM

audio cable.

CD-ROM
Drive Power

SCSI Data Cable

Cable

Take Apart Power Supply - 6

5 Remove the CD-ROM

drive EMI shield.

CD-ROM EMI Shield

Take Apart Power Supply - 7

6 Press up on the tab and

slide out the CD-ROM
drive.

Tab

Take Apart Power Supply - 8

Main

Power Cable

CD-ROM

Drive Power

7 Disconnect these power

supply cables:

• Main power cable
from the logic board

• Hard drive power
cable from the hard
drive

• CD-ROM drive power
cable from the CD­ROM drive (if
installed)

Hard Drive

Power Cable

Take Apart Power Supply - 9

8 Slide the power supply

forward slightly.

Power Supply

Take Apart Power Supply - 10

9 Tilt the front of the

power supply and lift it
out of the computer.

Power
Switch

Replacement Note:

Move the
floppy drive forward. Press
the actuator toward the back
of the computer to properly
seat the power switch in the
actuator.

Take Apart Logic Board - 11

Logic Board

Logic Board

Before you begin, do the
following:

• Remove the top cover

• Remove the Power supply

• Review the ESD

precautions in Bulletins/
Safety.

Take Apart Logic Board - 12

Note:

Standoff with Internal Screw

The logic board is

secured with two screws.

1 Using a long Phillips

screwdriver, remove
the screw from the
center of the standoff.

2 Remove the standoff.

3 Remove the Phillips

screw from the front
edge of the logic board.

Phillips
Screw

Take Apart Logic Board - 13

Floppy
Drive
Cable

Speaker

Cable

LED Cable

4 Disconnect these cables

from the front edge of
the logic board:

• Floppy drive cable

• Speaker cable

• LED cable

• CD-ROM audio cable
(if present)

5

Note:

Lift the front edge
of the logic board to
make removing the
floppy drive cable
easier.

Take Apart Logic Board - 14

Video-out cable

Video-in cable

SCSI Data Cable

6 Disconnect these cables

from the back edge of the
logic board:

• Video-out cable

• Video-in cable

• SCSI data cable

Take Apart Logic Board - 15

7 Remove the EMI shield

from the hard drive bay
and from the CD-ROM
bay, if the CD-ROM
drive is installed.

CD-ROM

EMI Shield

Hard Drive EMI Shield

Drive

Take Apart Logic Board - 16

8 Release the tab to unlock

the hard drive or CD­ROM, if installed.

9 Slide forward the hard

drive and CD-ROM
drive, if installed.

Tab

Take Apart Logic Board - 17

10 Slide the logic board

Logic Board

about 1/2 inch toward
the front of the
computer.

Take Apart Logic Board - 18

11 Remove the logic board.

12

Logic Board

Replacement Note:

the hard drive and

Slide

optional CD-ROM drive
forward a bit to allow
room for the logic
board. Connect the floppy
drive cable before
securing the logic board.

Take Apart Floppy Drive - 19

Floppy Drive

Floppy Drive

Before you begin:

• remove top cover.

• Review the ESD
precautions in Bulletins/
Safety.

Take Apart Floppy Drive - 20

Floppy
Drive

Tab

1 Press the tabs outwards

and slide the floppy
drive forward a few
inches.

Tab

Take Apart Floppy Drive - 21

2 Disconnect the floppy

drive cable.

Note:

You can easily

reach the floppy drive

Floppy
Drive
Cable

cable connector when the
floppy drive is forward.

3 Slide out the floppy

drive.

Take Apart Hard Drive - 22

Hard Drive

Hard Drive

Before you begin:

• remove top cover.

• Review the ESD
precautions in Bulletins/
Safety.

Take Apart Hard Drive - 23

SCSI Data Cable

Hard Drive
Power Cable

1 Disconnect the SCSI data

and hard drive power
cables from the hard
drive.

Take Apart Hard Drive - 24

2 Remove the hard drive

EMI shield.

Hard Drive EMI Shield

Take Apart Hard Drive - 25

3 Press down on the tab

and slide out the hard
drive.

Tab

Take Apart CD-ROM Drive - 26

CD-ROM Drive

CD-ROM Drive

Before you begin:

• remove the top cover.

• Review the ESD
precautions in Bulletins/
Safety.

Take Apart CD-ROM Drive - 27

CD-ROM Audio Cable

SCSI Data Cable

1 Disconnect the SCSI data

cable and CD-ROM drive
power cable from the
CD-ROM drive.

2 Disconnect the CD-ROM

audio cable.

CD-ROM
Power
Cable

Take Apart CD-ROM Drive - 28

3 Remove the CD-ROM

drive EMI shield.

CD-ROM EMI Shield

Take Apart CD-ROM Drive - 29

4 Press up on the tab and

slide out the CD-ROM
drive.

Tab

Replacement Note:

Be sure
to remove the CD-ROM drive
from the carrier prior to
returning the drive to Apple.

Take Apart Internal Chassis and Speaker - 30

Internal Chassis

Internal Chassis

Support Post

Internal Chassis

Rail and

Metal Tab

Tab

and Speaker

Before you begin: remove
the following:

• Remove the top cover

• Remove the power supply

• Remove the floppy drive

• Remove the hard drive

• Remove the CD-ROM

drive (if installed)

• Remove the logic board

• Review the ESD

precautions in Bulletins/
Safety.

Note:

The chassis is secured

to the bottom cover by two

Take Apart Internal Chassis and Speaker - 31

tabs at the front of the unit,

Internal Chassis

two rail and tab sets at the
sides of the unit, support
posts at the back of the
chassis, and hidden brackets
that slide into the bottom
cover.

1 Press up on one of the

front tabs while lifting
the support post.

2 Repeat this step on the

other side until the
internal chassis slides
easily toward the back
of the computer.

3 Press down and slide the

chassis toward the back

Take Apart Internal Chassis and Speaker - 32

of the computer.

4 Remove the chassis.

Note:

The LED cable,
floppy drive cable,
speaker and speaker
cable are not shipped
with the replacement
internal chassis.

Take Apart Internal Chassis and Speaker - 33

5 Turn the chassis over.

6 Remove the floppy drive

Speaker Cable

cable and the LED cable.

7 Remove the speaker

cable from its routing
guides.

LED Cable

Floppy Drive Cable

Take Apart Internal Chassis and Speaker - 34

Torx Screw

Speaker

8 Remove the two torx

screws from the
speaker.

9 Lift out the speaker.

Take Apart Internal Chassis and Speaker - 35

Bottom Cover

Internal Chassis

Metal Tab

Rail

Replacement Note:

Place
the internal chassis on the
floor of the bottom cover
with the front of the chassis
about 3/4 inch from the
front of the cover. Align the
side rails with the metal
tabs and slide the rails
under the metal tabs.

Take Apart Internal Chassis and Speaker - 36

Replacement Note:

carefully aligning the side
rails, push down firmly on
the chassis and slide it
toward the front of the unit.
The tabs will snap into
place.

After

Take Apart Bottom Cover - 37

Bottom Cover

Bottom Cover

Before you begin: remove
the following:

• Remove the top cover

• Remove the power supply

• Remove the floppy drive

• Remove the hard drive

• Remove the CD-ROM

drive (if installed)

• Remove the logic board

• Remove the internal

chassis

• Review the ESD

precautions in Bulletins/
Safety

Take Apart Bottom Cover - 38

1 Shift the actuator toward

the back of the unit.

2 Squeeze together the tabs

on the shaft of the

Actuator

actuator.

3 Remove the actuator.

Tab

Tab

Take Apart Bottom Cover - 39

4 Lift out the insulator

sheet.

Insulator Sheet

Replacement Note:

There is only one correct
position for the
insulator sheet. Match
the notches on the sides
of the insulator sheet
with the corresponding
metal stops.

Take Apart Bottom Cover - 40

5 Using a screwdriver,

I/O Panel

release the tabs on the
upper-rear edge of the

Tabs

bottom cover.

6 Push out the I/O panel.

Tabs

K

Service Source

Upgrades

Centris 660AV/Quadra 660AV

Upgrades Expansion Cards - 1

Expansion Cards

Expansion Card Slot

Before you begin, do the
following:

• Remove the top cover.

• Review the ESD

precautions in Bulletins/
Safety.

Upgrades Expansion Cards - 2

Expansion Port Cover

1 Remove the expansion

port cover from the back
panel.

Upgrades Expansion Cards - 3

Expansion Card

Adapter Card

2 Loosely connect the

expansion card
connector to the adapter
card connector.

Note:

Be sure to fit the
adapter card pin into the
expansion card hole.

3 Gently press the

connectors together.

Upgrades Expansion Cards - 4

4 Insert the connector on

the bottom of the
adapter card into the
expansion slot.

Note:

Make sure that the
tab on the side of the

Adapter
Card Tab

Adapter
Card
Connector

Bottom Case
Slot

Expansion Slot

adapter card slides into
the slot on the side of the
bottom case.

Upgrades Expansion Cards - 5

5 Attach the thumbscrews.

Thumbscrews

Upgrades CD-ROM Drive Upgrade - 6

CD-ROM Drive

CD-ROM Drive Bay

Upgrade

Before you begin, do the
following:

• Remove the top cover.

• Review the ESD
precautions in Bulletins/
Safety.

Upgrades CD-ROM Drive Upgrade - 7

1 Remove the blank CD-

ROM drive bezel from
the top cover.

2 Install the slotted CD-

ROM drive bezel in the
top cover.

Slotted CD-ROM

Drive Bezel

Upgrades CD-ROM Drive Upgrade - 8

3 Pry off the metal 5.25”

drive bay shield.

5.25'' Drive Bay Shield

Upgrades CD-ROM Drive Upgrade - 9

4 Attach the CD-ROM drive

CD-ROM Drive Carrier

carrier to the CD-ROM
drive with four Phillips
screws.

CD-ROM Drive

Upgrades CD-ROM Drive Upgrade - 10

CD-ROM Drive

CD-ROM Drive Carrier

5 Push in the CD-ROM

drive and carrier.

Upgrades CD-ROM Drive Upgrade - 11

Bottom Cover

Tabs

6 Align the slots at the

lower edge of the CD­ROM shield with the
tabs on the bottom cover.

7 Swing up the CD-ROM

shield until it snaps
securely onto the bottom
cover.

Slots

Upgrades CD-ROM Drive Upgrade - 12

8 Connect these cables

CD-ROM

Audio Cable

SCSI Data

Cable

CD-ROM Drive Power
Cable

from the power supply
to the CD-ROM drive:

• CD-ROM audio cable

• SCSI data cable

• CD-ROM drive power
cable

9 Connect the other end of

the CD-ROM audio cable

CD-ROM
Cable Audio

to the logic board.

Upgrades Power Mac Upgrade - 13

Power Mac Upgrade

No preliminary steps are
required before you begin
this procedure.

The Centris 660AV and
Quadra 660AV can be
upgraded to a Power
Macintosh 6100/60 or
Power Macintosh 6100/
60AV. For upgrade
instructions, refer to
Additional Procedures in the
Power Macintosh 6100
manual.

K

Service Source

Additional Procedures

Centris 660 AV/Quadra 660AV

Additional Procedures Battery Verification - 1

Battery

Battery

Verification

Before you begin do the
following:

• Remove the top cover.

Warning:

discarded improperly,
the lithium battery in
the computer could
explode. Review
battery-handling and
disposal instructions in
Bulletins/Safety.

• Review the ESD
precautions in Bulletins/
Safety.

If handled or

Additional Procedures Battery Verification - 2

1 Set the voltmeter to the

10 volts DC scale.

2 Hold the positive probe

of the voltmeter to the

Negative
Probe

positive end of the
battery (marked “+”
on the logic board) and

Positive
Probe

the negative probe to the
negative end of the
battery.

3 If the battery voltage is

below 3.2 volts, replace
the battery. Refer to
“Battery Replacement”
in this chapter.

Additional Procedures Battery Replacement - 3

Battery

Battery

Replacement

Before you begin do the
following:

• Remove the top cover.

Warning:

discarded improperly,
the lithium battery in
the computer could
explode. Review
battery-handling and
disposal instructions in
Bulletins/Safety.

• Review the ESD
precautions in Bulletins/
Safety.

If handled or

Additional Procedures Battery Replacement - 4

1 Using a small flat-blade

screwdriver, pry open
the latch at the end of the
battery holder and lift
off the cover.

Additional Procedures Battery Replacement - 5

2 Grasp the battery and

remove it from the
holder.

3 Return the battery to

Apple for proper
disposal. For battery
packaging and labeling
instructions, refer to
the safety information in
Bulletins/Safety.

K

Service Source

Exploded V ie w

Centris 660AV/Quadra 660AV

Exploded View 1

Exploded View

Top Cover

922-0545

Blank Bezel

922-0358

Slotted CD Bezel

with Caddy

922-0355

Slotted CD Bezel
Caddiless

Power Supply

SCSI Cable

Support
Column

922-0356

Logic Board

661-1704

Insulator Sheet

922-0866

AV Adapter Cables

661-1688

Internal Chassis
922-0359

Floppy
Drive
Cable
922-0351

Speaker
922-0353

LED Cable
922-0354

On/Off Actuator
922-0357

Expansion
Port Cover

922-0902

CD Audio Cable
922-0842

Manual Insert

Floppy Drive

Floppy Drive

Rear

Housing

922-0864

Feet (4)

922-0862

Bottom Cover

922-0806

Hard Drive Carrier

PDS Adapter
NuBus Adapter

661-1719

This is a generic representation of a product family. Configurations may vary.
For number of part with asterisk, see parts list.

Hard Drive*

922-1806

CD-ROM

Carrier

922-0850

Hard Drive

Shield

922-0367

* CD-ROM
Drive

CD-ROM

Shield

922-0826

Carrier

805-0961

Floppy
Shield
922-0826

Blank
Shield