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...
Hard Drive 1
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. .- .Power Cable . --. JiiiT .- .Power Cable . --. JiiiT 1 Disconnect the hard drive data cable from the logic board. 2 Disconnect the hard drive power cable from...
Cover
No preliminary steps are required before you begin this procedure. Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. 1 Using a Torx screwdriver, remove the four case screws. Using a case spreader or pull-apart tool, separate the cover from the chassis. 2 Carefully lift the cover and set it aside. Awarning The edges of the metal chassis may be sharp....
PowerSweep Board
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. Using a Torx screwdriver, remove the screw that secures the ground wire to the upper corner of the CRT. Carefully pull off the video board from the neck of the CRT. Note If sealant...
Logic Board
Remove the memory expansion board Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. Remove the following cable connectors from the logic board Hard drive data cable if present 2 Grasp the logic board by the...
Fan
Remove the power sweep board Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. 1 Using a small, stump-handled Phillips screwdriver, remove the two screws that mount the fan to the chassis.
Battery Replacement
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. Awarning If handled or discarded improperly, the lithium battery in the computer could explode. Review battery handling and disposal instructions in Bulletins...
Classic II Upgrade
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap Never use a grounding wriststrap until after discharging the CRT. Note A Macintosh Classic II upgrade kit upgrades a Macintosh Classic to a Macintosh Classic II. The upgrade kit includes a Classic II logic board, a Classic II...
Video Continued
2 Replace logic board. Retain customer's SIMMs. 2 Replace logic board. Retain customer's SIMMs. Vertical bars or stripes are displayed 2 Replace logic board. Retain customer's SIMMs.
Battery Verification
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. Probe discarded improperly, the computer could explode. Review battery handling and disposal instructions in Bulletins Safety. 1 Set the voltmeter range to thel 0 volts DC scale. 2...
m 1
Remove the power sweep board Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. 1 Remove the three Torx screws from the corners of the CRT. 2 Carefully lift the CRT free from the bezel. Note The CRT yoke...
Chassis Front Bezel
Remove the power sweep board Remove the memory expansion board Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. 1 Remove the four Torx screws from the front bezel. Remove the three Torx screws from the corner of the CRT, and remove the CRT.
Macintosh Classic Fuse
Awarning This product contains high voltage and a high-vacuum picture tube. To prevent serious personal injury or equipment damage, review CRT safety and discharge instructions in Bulletins Safety. Caution To prevent ESD damage to components, wear a grounding wriststrap. Never use a grounding wriststrap until after discharging the CRT. Using a fuse puller or small flat-blade screwdriver, carefully remove the fuse from its holder.