Battery Replacement
Before you begin, remove the top cover. 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...
Replacement Note The
LC 475 and Quadra 605 use the same logic board replacement. The Quadra 605 requires a jumper to connect the pins at location J1 8. Quadra 605 service replacement logic boards do not include the jumper. Install a jumper on the pins at location J1 8 on the Quadra 605 service replacement logic board
Sound and Video
Sound Monaural, 8-bit sound input at 11 or 22 kHz LC, LC II, LC III Monophonic, 8-bit sound generator supplying same signal to both channels of stereo equipment LC 475 and Quadra 605 Stereo output capability Video LC and LC II provide built-in support for many monitors, Apple High-Resolution Monochrome Monitor AppleColor High-Resolution RGB Monitor Macintosh 12-Inch RGB Display Macintosh 12-Inch Monochrome Display LC III, LC 475 and Quadra 605 provide up to 16-bit support on 12-, 13-, and...
Fan
Caution Review the ESD precautions in Bulletins Safety. Note A Macintosh LC 475 upgrade kit upgrades a Macintosh LC II or III to a Macintosh LC 475. The upgrade kit includes a Macintosh LC 475 logic board and product ID labels. Note The upgrade kit does not include a connecting grounding spring. You must order this part separately. Before installing the upgrade logic board, install the connecting grounding spring on the audio ports of the board, with the arms of the spring facing out. 2 Install...
LC II Upgrade
Before you begin, remove the following Caution Review the ESD precautions in Bulletins Safety. Note A Macintosh LC II upgrade kit upgrades a Macintosh LC to a Macintosh LC II. The upgrade kit includes a Macintosh LC II logic board and cover. 1 Install the Macintosh LC II logic board. 2 Install the customer's SIMMs into the new logic board. Replacement Note After replacing the fan speaker assembly, install the Macintosh LC II top cover. Make sure that the connections to the sound-out and sound...
Builtin Video
Screen is dark, audio and at least one drive operate, fan runs, and LED is lit 1 Adjust brightness on monitor. 2 Try monitor with another Macintosh computer. 4 Replace monitor. Troubleshoot defective monitor. See Symptom Charts in appropriate monitor manual. 7 Replace logic board. Retain customer's SIMMs. Screen is dark, audio and drive do not operate, but fan runs and LED is lit 1 Remove expansion card, if present. 3 Disconnect hard drive and floppy drive. 4 Replace SIMMs. Refer to Memory...
Peripherals
Works with internal or external SCSI device but does not work with both 1 Verify that SCSI select switch on external device is set to different priority from internal. 2 Verify that both ends of external SCSI device are terminated. 3 Replace terminator on external device. 4 Verify that terminator is installed on internal SCSI drive. 3 If mouse was connected to keyboard, connect mouse to rear ADB port and disconnect keyboard. If mouse works, replace keyboard. 4 If mouse does not work in any ADB...
LC to LC III Upgrade
Before you begin, remove the following Caution Review the ESD precautions in Bulletins Safety. Note A Macintosh LC III upgrade kit includes LC III logic board, bottom case, top cover, power supply, speaker, fan, and floppy drive carrier. Note You will use only a few parts from the original LC in upgrading an LC to an LC III. The following procedures explain how to remove the LC parts and install them into the LC III upgrade unit. 1 Remove the Macintosh LC floppy drive and floppy drive cable....
Error Chords
2 Perform SIMM verification on replacement logic board. 3 Replace logic board. Retain customer's SIMMs. 2 Perform SIMM verification on replacement logic board. 3 Replace logic board. Retain customer's SIMMs. Error chord sounds during startup Macintosh LC Eight-tone error chord sounds during startup LC II III 475 Quadra 605 Four-tone error chord sounds during startup Macintosh LC II Disconnect hard drive power cable and hard drive data cable and reboot system. If startup sequence is normal, run...
Replacement Note The 1
replacement logic boards for the LC 475 and the Quadra 605 do not include grounding connectors. You must remove the grounding connector from the defective board and install it on the replacement board. There are two versions of grounding connectors, a foam grounding pad and a connecting grounding spring. You may encounter either version on LC 475 and Quadra 605 logic boards. Install the foam grounding pad on the audio ports of the replacement logic board with the rough side of the pad facing...
LC Ethernet Upgrade
Before you begin, remove the top cover. Caution Review the ESD precautions in Bulletins Safety. Note The finished goods LC Ethernet Card package includes the LC Ethernet Card and standoffs. If you order service parts, you must order the standoffs separately from the card. 1 Insert the short standoff in the hole on the corner near the connector end of the card. 2 Insert the long standoff in the hole on the center edge of the card. Caution Failure to install the standoffs can cause the computer...