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)

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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.