Memory

DRAM Performa 400 405 410 430 4 MB standard, expandable to 10 MB (100 ns or faster SIMMs) Performa 450 4 MB standard, expandable to 36 MB (80 ns or faster SIMMs) ROM Performa 460 466 467 4 MB standard, expandable to 36 MB (80 ns or faster SIMMs) Performa 475 476 4 MB or 8 MB standard, expandable to 36 MB (80 ns or faster SIMMs) Performa 400 405 410 430 512 K Performa 450 460 466 467 475 476 1MB Performa 400 405 410 430 512K VRAM SIMM Performa 450 512K VRAM SIMM, upgradable to 768 MB Performa...

Battery Replacement

Caution Review the ESD precautions in Bulletins Safety. Awarning If handled or discarded improperly, the lithium battery in the computer could explode. Review battery handling and disposal instructions in Bulletins Safety. 1 Insert a small flat-blade screwdriver into the top of the holder and gently push the screwdriver down until the side tab pushes out. 2 Repeat on the other end and remove the cover from the holder. Grasp the battery and remove it from the holder. Return the battery to Apple...

Macintosh Processor Upgrade

Macintosh Performa 475

Before you begin, remove the following Card in the PDS slot if any Caution Review the ESD precautions in Bulletins Safety. Note The Macintosh Processor Upgrade kit allows 68LC040 computers to switch between a PowerPC 601 processor and a 68LC040 processor. The upgrade board includes the PowerPC 601 processor on board and a socket to accept the customer's 68LC040 processor. Note Refer to the Macintosh Processor Upgrade manual under the Power Macintosh menu for information about specifications and...

Battery Verification

Caution Review the ESD precautions in Bulletins Safety. Awarning If handled or discarded improperly, the lithium battery in the computer could explode. Review battery handling and disposal instructions in Bulletins Safety. 1 Set the voltmeter to the 10 volts DC scale. 2 Hold the positive probe of the voltmeter to the positive end of the battery and the negative probe to the negative end of the battery. 3 If the battery voltage is below 3.0 volts, replace the battery. Refer to Battery...

Speaker

Before you begin, remove the following Caution Review the ESD precautions in Bulletins Safety. 1 Disconnect the speaker cable from the speaker connector on the logic board. 2 Release the plastic latches and lift the speaker from the case. Replacement Note Before reconnecting the speaker cable, thread it through the top two brackets that hold the hard drive in place.

Disk Storage

Floppy Drive Performa 400 405 430 Apple SuperDrive 1.4 MB Floppy Disk Performa 410 Apple SuperDrive Manual Insert Floppy Disk Drive Performa 450 Apple SuperDrive 1.4 MB Floppy Disk Drive Performa 460 466 467 Apple SuperDrive Manual Insert Floppy Disk Drive Performa 475 476 Apple SuperDrive 1.4 MB Floppy Disk Drive or Apple SuperDrive Manual Insert Floppy Disk Drive Performa 400 40 or 80 MB Performa 405 410 80 MB Performa 430 120 MB Performa 450 120, 80 MB Performa 460 80, MB Performa 466 467...

IO Interfaces

Two RS-232 RS-422 serial ports mini DIN-8 connectors Apple Desktop Bus One ADB port mini DIN-4 connector One DB-15 monitor port for built-in video DA-15 connector Sound input port for monaural sound input mini phono plug Performa 475 476 mono sound input port, stereo output port mini phono plug Performa 400 405 410 430 96-pin processor-direct slot PDS supporting 020 030 direct slot expansion card Performa 450 114-pin PDS supporting 020 030 direct slot expansion card Performa 460 466 467 1...

Hard Drive

Locking Tab

Caution Review the ESD precautions in Bulletins Safety. Release the locking tab and disconnect the hard drive power cable from the connector on the logic board. Disconnect the hard drive data cable from the connector on the logic board. 3 Release the two plastic latches on one side of the hard drive and lift the drive slightly. Repeat on the other side of the drive and remove the drive with carrier from the computer. information on removing the hard drive from the carrier and returning drives,...

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...

Processor

Performa 400 405 Motorola 68030 microprocessor 410 430 1 6 MHz 16-bit internal data bus Burst-mode RAM access Performa 450 Motorola 68030 microprocessor 32-bit internal data bus Burst-mode RAM access Coprocessor socket Motorola 68030 microprocessor 33 MHz 32-bit internal data bus Burst-mode RAM access Coprocessor socket Performa 475 476 Motorola 68LC040 microprocessor 32-bit internal data bus Burst-mode RAM access

Floppy Drive

Macintosh Performa 460

Caution Review the ESD precautions in Bulletins Safety. 1 Disconnect the floppy drive cable from the connector on the logic board. 2 Release the two latches at the rear of the floppy drive and remove the drive from the case. Replacement Note Before you install a replacement 1.4 MB SuperDrive, you must remove the clear plastic dust shield, if present. encounter either an Apple SuperDrive or a manual eject floppy drive in some models. Replace floppy drives like for like.

Sound and Video

Monaural, 8-bit sound input at 11 or 22 Khz Monophonic, 8-bit sound generator supplying same signal to both channels of stereo equipment Performa 400, bundled with Performa 405, bundled with Performa 430, bundled with monitor Performa 410, bundled with Performa 450, bundled with monitor Performa 460, bundled with Performa 466 467, bundled monitor Performa 475 476, bundled monitor Performa Display.39 VGA monitor Performa Display.39 VGA monitor Performa Display Plus.29 VGA Performa Display.39 VGA...

Logic Board

Before you begin, remove the following Caution Review the ESD precautions in Bulletins Safety. 1 Disconnect the following cable connectors from the logic board 2 Remove the expansion card if installed . Important In the next step, be sure the power on off button clears the rear panel before you remove the logic board. While lifting the board, do not touch any components or connectors on the back of the logic board. The oil from your skin can harm the connectors. Caution Using your forefingers,...

Symptom Charts

Harddisk Logic Board Circuit Diagram

Retain customer's SIMMs. 3 Perform SIMM verification on replacement logic board. 1 Disconnect hard drive power cable and hard drive data cable and reboot system. If startup sequence is normal, run Macintosh Hard Disk Test and replace hard drive if necessary. 2 Disconnect floppy drive cable and reboot system. If startup sequence is normal, replace floppy drive. 3 Replace logic board. Retain customer's SIMMs. Eight-tone error chord sounds during startup Four-tone error...