Apple 9500/132, 9500/200, 9500/180MP, 9500/150 manual Cuda Chip

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BasicsThe Cuda Chip - 16

The Cuda Chip

The Cuda is a microcontroller chip. Its function is to

Turn system power on and off

Manage system resets from various commands

Maintain parameter RAM (PRAM)

Manage the Apple Desktop Bus (ADB)

Manage the real-time clock

Many system problems can be resolved by resetting the Cuda chip (see Symptom Charts for examples). Press the red Cuda reset button on the logic board to reset the Cuda chip. (See "Logic Board Diagram" later in this chapter to locate the Cuda reset button.) If you continue to experience system problems, refer to “Resetting the Logic Board” in this Basics chapter.

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Contents Power Macintosh 9500 Series Basics Overview Page Configurations Page PowerPC 604 Microprocessor Multi-Processor Support Peripheral Component Interconnect PCI Dual In-Line Memory Modules DIMMs Page Memory Configurations Page Figure Power Macintosh 9500 Memory Locations Ethernet Support PC Compatibility CardsGeoPort Page Cuda Chip Resetting the Logic Board Page Fast Scsi Rear View Diagram Figure Power Macintosh 9500 Rear Panel Logic Board Diagram Power Macintosh 9500 Logic Board Specifications Processor 9500/120 9500/132 9500/1509500/180MP Memory Interfaces Sound Devices Video Support Disk Storage Hard DriveLine Voltage Frequency Maximum Power ElectricalDimensions PhysicalEnvironmental Troubleshooting General Cleaning Procedure for Card Connectors Symptom Charts Power SupplyError Chords Page System Page System System Page Video Screen Page Floppy Drive Page Page Hard Drive Page Peripherals Page Page Page CD-ROM Drive Miscellaneous Page Take Apart Top Housing Page Top Housing CD-ROM Drive Take Apart CD-ROM Drive Disconnect the Scsi data Page Floppy Drive Take Apart Floppy Drive Disconnect the floppy Replacement Note Be sure Hard Drive Take Apart Hard Drive Disconnect the Scsi data Page Power Supply Power Supply Cable Facing the power supply Chassis support Latch Replacement Note There Speaker Take Apart Speaker Disconnect the speaker Take Apart Page Rear Panel Secure the rear panel to Take Apart Rear Panel Pull out on the rear Processor Card Replacement Note Position PCI/Video Cards Take Apart PCI/Video Cards Important If you are Replacement Note To Logic Board Scsi Take Apart Logic Board Locate the power Page Page Page Page LED Connector Fan Take Apart Fan Disconnect the fan cable From the logic board Fan bracket Replacement Note Hold Upgrades Upgrades PC Compatibility Cards Exploded View Exploded View