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K
Service Source
Power Macintosh 7100 Series
Power Macintosh 7100/66, 7100/66AV,
7100/80, 7100/80AV
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K Service Source Basics Power Macintosh 7100 Series
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Basics Power Macintosh System Overview - 1 Power Macintosh System Overview PowerPC microprocessors are a family of processors built on reduced instruction-set computing (RISC) technology. RISC processors streamline the internal workings of computers. Whereas traditional (complex instruction-set computing, or CISC) processors contain a wide variety of instructions to handle many different tasks, RISC processors contain only those instructions that are used most often. When a complex i
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Basics Power Macintosh System Overview - 2 Previously, RISC technology had been used only in high-end workstations and commercial database servers. With the introduction of Macintosh PowerPC computers, Apple succeeded in bringing RISC technology to personal computing. Key Points Three key points to remember about a PowerPC processor- based Macintosh system: It's a Macintosh; it's compatible; it offers tremendous performance. Apple's PowerPC computers feature the same user interface a
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Basics Power Macintosh System Overview - 3 Compatibility is not limited just to applications. INITs, CDEVs, drivers, and other Macintosh utility software also work on PowerPC processor-based Macintosh systems. So do AppleTalk devices (such as printers), SCSI devices (such as hard drives and scanners), ADB devices (such as mice, trackballs, and keyboards), and other Macintosh cards and peripherals. The primary operating system for PowerPC processor- based Macintosh computers is System 7
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Basics Power Macintosh System Overview - 4 of the fastest 68040- and 80486-based personal computers, the real promise of PowerPC technology is that it enables Apple and other developers to deliver new software capabilities on Macintosh systems that were previously available only on high-end workstations. Troubleshooting Tips When troubleshooting Power Macintosh systems, keep in mind the following: 1 If a Power Macintosh system does not power up, you should first attempt to reset the
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Basics Power Macintosh System Overview - 5 provided in the Symptom Charts section of the Troubleshooting chapter under the “System” topic heading. 3 If a Power Macintosh system has bad RAM SIMMs installed, you will not hear death chimes. Instead, a dialog box will appear alerting you to the fact that a bad RAM SIMM has been detected. Additional troubleshooting information is provided in the Symptom Charts section of the Troubleshooting chapter under the “System” topic heading. 4 If t
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Basics Power Macintosh System Overview - 6 5 The Power Macintosh AV systems use the same logic board as the non-AV versions. The only difference is that the AV versions have the Power Macintosh AV Card installed in the PDS slot. The Power Macintosh 7100/66 and 7100/80 systems must have a video card installed in the PDS slot. These systems use the Power Macintosh 2 MB Video Card. A missing card can result in a system that won't boot or a system that crashes.
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Basics HDI-45 Pinouts - 7 HDI-45 Pinouts This section includes an illustration of the HDI-45 connector and a table containing the pinout descriptions. Figure: HDI-45 Connector on the Logic Board
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Basics HDI-45 Pinouts - 8 Table: HDI-45 Pinouts Pin Description 1 Analog audio ground 2 Audio input shield 3 Left channel audio input 4 Right channel audio input 5 Left channel audio output 6 Right channel audio output 7 Reserved 8 Monitor ID sense line 1 9 Monitor ID sense line 2 (continued)
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Basics HDI-45 Pinouts - 9 Pin Description 10 Green ground (shield) 11 Green video output (75Ω) 12 Video input power ground 13 Power for camera +5 V 14 Reserved 15 Reserved 16 Reserved 17 Reserved 18 Monitor ID sense line 3 19 S-video input shield 20 S-video input luminance (Y) (continued)
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Basics HDI-45 Pinouts - 10 Pin Description 21 S-video input chroma (C) 22 Reserved 23 Reserved 24 Reserved 25 Reserved 26 Red ground (shield) 27 Red video output (75Ω) 2 28 I C data signal 2 29 I C clock signal 30 Reserved 31 Monitor ID (continued)
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Basics HDI-45 Pinouts - 11 Pin Description 32 Monitor ID 33 Vertical sync signal 34 Composite sync signal 35 ADB power +5 V 36 ADB ground 37 ADB data 38 Keyboard switch 39 Reserved 40 Reserved 41 Monitor ID 42 Horizontal sync signal (continued)
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Basics HDI-45 Pinouts - 12 Pin Description 43 Video sync ground 44 Blue ground (shield) 45 Blue video output (75Ω)
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Basics Rear Panel Connectors - 13 Rear Panel Connectors The figure on the following page shows the rear panel of a Power Macintosh 7100 computer with a 2 MB Video Card installed. The AV version of the Power Macintosh 7100 would have a Power Macintosh AV Card installed instead of the 2 MB Video Card. In addition to a DB-15 connector, the AV Card includes an S-Video Input and an S-video Output port.
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Basics Rear Panel Connectors - 14 DB-15 Sound In Ethernet Sound Out Power On SCSI ADB Modem HDI-45 Video Printer Power Macintosh 7100 Rear Panel
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Basics Logic Board Connectors - 15 Logic Board Connectors The figure on the following page shows a Power Macintosh 7100 Series logic board.
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Basics Logic Board Connectors - 16 DRAM SIMMs Power On/Off Switch SCSI Ethernet AV Display Connector Serial Ports ADB Sound In Sound Out 601 L2 Cache 601Soldered PDS Slot DRAM 4 MB ROM Power Macintosh 7100 Logic Board
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K Service Source Specifications Power Macintosh 7100 Series
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Specifications Processor - 1 Processor CPU Built-in MMU and FPU 32K of on-chip cache memory 7100/66: 66 MHz PowerPC 601 RISC microprocessor Requires system software version 7.1.2 or later 7100/80: 80 MHz PowerPC 601 RISC microprocessor Requires system software version 7.5 or later Note: To run System 7.5 on the Power Mac 7100/80, you must install enabler version 1.1.1 or later. This version of the system software, which ships with the unit, requires Finder version 7.1.5. You can
