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Power Macintosh 7100 Series
Power Macintosh 7100/66, 7100/66AV, 7100/80, 7100/80AV

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Basics
Power Macintosh 7100 Series

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 instruction is needed, a RISC processor builds it from a combination of basic instructions. RISC processors are designed to execute these basic instructions extremely quickly. The performance gains achieved by speeding up the most-used instructions more than compensate for the time spent creating less-used instructions.

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 processorbased Macintosh system: It's a Macintosh; it's compatible; it offers tremendous performance. Apple's PowerPC computers feature the same user interface as their 680x0-based predecessors. Users can mix RISCbased and 680x0-based Macintosh systems on the same network and exchange files and disks between them. In addition, users can run both 680x0 and native PowerPC applications on the same Power Macintosh system simultaneously.

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 processorbased Macintosh computers is System 7. The operating system has been optimized for the highest performance on the PowerPC processor. This optimization of System 7 benefits applications written for 680x0 systems as well as those developed specifically for PowerPC processor-based systems. And while PowerPC-based Macintosh systems running native applications offer two to four times the performance

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

2

If a Power Macintosh system does not power up, you should first attempt to reset the logic board. Instructions are provided in the Additional Procedures chapter.

With Power Macintosh computers, you must install noncomposite RAM SIMMs only, and the RAM SIMMs must be installed in like pairs (that is, the same size and speed). Additional troubleshooting information is

Basics

Power Macintosh System Overview - 5 provided in the Symptom Charts section of the Troubleshooting chapter under the "System" topic heading.

3

4

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. If the system hangs shortly after installing a new NuBus card, contact the vendor to verify that the card is compatible with the Power Macintosh system or to see if there is a software upgrade available. If the NuBus card is an Apple manufactured product, refer to the Service Tech Info Library for more information.

Basics 5

Power Macintosh System Overview - 6 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.

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

Basics

HDI-45 Pinouts - 8

Table: HDI-45 Pinouts Pin 1 2 3 4 5 6 7 8 9 Description Analog audio ground Audio input shield Left channel audio input

Right channel audio input Left channel audio output Reserved Right channel audio output Monitor ID sense line 1 (continued) Monitor ID sense line 2

Basics Pin 10 11 12 13 14 15 16 17 18 19 20 Description Green ground (shield)

HDI-45 Pinouts - 9

Green video output (75) Video input power ground Power for camera +5 V Reserved Reserved Reserved Reserved Monitor ID sense line 3 S-video input luminance (Y) (continued) S-video input shield

Basics Pin 21 22 23 24 25 26 27 28 29 30 31 Description

HDI-45 Pinouts - 10

S-video input chroma (C) Reserved Reserved Reserved Reserved Red ground (shield) I 2C data signal Reserved

Red video output (75) I 2C clock signal Monitor ID

(continued)

Basics Pin 32 33 34 35 36 37 38 39 40 42 41 Description Vertical sync signal ADB power +5 V ADB ground ADB data Monitor ID

HDI-45 Pinouts - 11

Composite sync signal

Keyboard switch Reserved Reserved

Horizontal sync signal (continued)

Monitor ID

Basics Pin 43 44 45 Description Video sync ground Blue ground (shield)

HDI-45 Pinouts - 12

Blue video output (75)

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.

Basics
DB-15

Rear Panel Connectors - 14

Power On

SCSI

Ethernet HDI-45 Video

ADB Modem Printer

Sound In Sound Out

Power Macintosh 7100 Rear Panel

Basics

Logic Board Connectors - 15

Logic Board Connectors
The figure on the following page shows a Power Macintosh 7100 Series logic board.

Basics
Power On/Off Switch SCSI Ethernet

Logic Board Connectors - 16
DRAM SIMMs

AV Display Connector Serial Ports ADB Sound In Sound Out 601 L2 Cache 601 Soldered PDS Slot DRAM 4 MB ROM

Power Macintosh 7100 Logic Board

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Specifications
Power Macintosh 7100 Series

Specifications

Processor - 1

Processor
CPU
Built-in MMU and FPU 32K of on-chip cache memory 66 MHz PowerPC 601 RISC microprocessor Requires system software version 7.1.2 or later 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 verify that you have the correct Finder version installed by using the "Get Info" command.

7100/66:

7100/80:

Specifications

Memory - 2

Memory
RAM
8 MB RAM soldered on logic board, expandable to 136 MB via 4 SIMM sockets on logic board (using pairs of same size, 80 ns or faster, 72-pin noncomposite SIMMs); 16 MB configuration has two 4 MB SIMMs installed Note: SIMMs must be installed in pairs of the same size and speed. Install noncomposite SIMMS only.

ROM

4 MB installed on SIMM socket

Specifications

Memory - 3

VRAM
7100/66 & 7100/80: 7100/66AV & 7100/80AV: 1 MB, expandable to 2 MB using four 256K VRAM SIMMs 2 MB

Cache
7100/66: 7100/80: 32K of on-chip cache; optional 256K level 2 cache available 32K of on-chip cache; 256K level 2 cache standard CMOS custom chip with long-life lithium battery

Clock/calendar

Specifications

Disk Storage - 4

Disk Storage
Hard Drive
7100/66: 7100/80: 250 MB or 500 MB hard drive 500 MB or 700 MB hard drive

CD-ROM
7100/66: 7100/66AV: 7100/80 & 7100/ 80AV: Optional internal CD-ROM drive Internal AppleCD 300i Plus CD-ROM drive Internal AppleCD 300i Plus CD-ROM drive standard on some models and optional on others

Specifications

Disk Storage - 5 1.4 MB Apple SuperDrive Manual Insert

Floppy Drive

Specifications

I/O Interfaces - 6

I/O Interfaces
SCSI
One SCSI port; DB-25 connector Supports a maximum of six external devices (five when internal CD-ROM is installed) Two RS-232/RS-422 LocalTalk/GeoPort serial ports; mini DIN9 connectors (backward compatible with mini DIN-8 connectors) One Apple Desktop Bus (ADB) port; mini-Din-4 connector Maximum power draw 500 mA; maximum of three devices total One built-in AUUI-15 Ethernet port

Serial

Apple Desktop Bus

Ethernet

Specifications

I/O Interfaces - 7 One processor-direct slot (PDS); 182-pin connector Three NuBus slots support standard size cards; 96-pin Euro-DIN connectors 16-bit stereo in and out Sample rates of 48, 44.1, 24, and 22.05 kHz Input/output line level: 1 V peak-to-peak Input/output signal-to-noise ratio (SNR): 82 dB with no audible discrete tones Bandwidth: 20 Hz­20 kHz (± 2 dB) at 44.100 kHz sample rate THD+N (total harmonic distortion plus noise): less than 0.05%, measured 20Hz­20 kHz with a 1-Vrms sine wave input

Expansion Slot NuBus

Sound

Specifications

I/O Interfaces - 8 One HDI-45 DRAM-based video port on logic board supports direct connection to Apple AudioVision monitors and with optional HDI-45 to DB-15 adapter supports 12", 13", 14", 15" portrait, 16", and 17" monitors Also has a Power Macintosh 2 MB Video Card with one DB-15 VRAM-based video port that supports 12", 13", 14", 15" portrait, 16", and 17", 20", and 21" monitors Also has a Power Macintosh AV Card with the following: one DB15 VRAM-based video port that supports 12", 13", 14", 15" portrait, 16", and 17", 20", and 21" monitors; one S-video/ composite input port; and one S-video composite output port Note: Only one monitor can be attached to the card at one time (that is, either through the DB-15 port or the S-video port).

Video

7100/66 & 7100/80:

7100/66AV & 7100/ 80AV:

Specifications

I/O Devices - 9

I/O Devices
Keyboard
Standard, extended, or adjustable keyboard Keyboard draws 25­80 mA, depending on model of keyboard ADB Mouse II; Draws up to 10 mA

Mouse Microphone
7100/66:

Optional Apple PlainTalk microphone; unidirectional and optimized for use with speech recognition Apple PlainTalk microphone standard

7100/66AV, 7100/80 & 7100/80AV:

Specifications

Video Display - 10

Video Display
Video Support
System must have the Power Macintosh 2 MB Video Card or Power Macintosh AV Card installed All Power Macintosh 7100 series computers support monochrome, color, VGA, and SVGA formats on the HDI-45 logic board connector, including: · · · · · · · Macintosh 12" Monochrome Display (640 x 480) Macintosh 12" RGB Display (512 x 384) AppleColor High-Res RGB 14" Monitor (640 x 480) Apple AudioVision 14 Display (640 x 480) Macintosh Color Display (640 x 480) Macintosh 15" Portrait Display (640 x 870) Macintosh 16" Color Display (832 x 624)

Specifications

Video Display - 11 All Power Macintosh 7100 series computers also support the following monitors via the DB-15 connector on their respective video cards: · Macintosh 19" Color Display (1024 x 768) · Apple Multiple Scan 20 Display (1280 x 1024) · Macintosh 21" Color Display (1152 x 870) And the AV versions support the following monitors via the DB-15 connector on the Power Macintosh AV Card: · NTSC (512 x 384 and 640 x 480) · PAL (640 x 480 and 768 x 576)

Video Support
(continued)

Specifications

Electrical - 12

Electrical
A/C Line Input Voltage Input Line Frequency Input Power
100­240 VAC; RMS single phase, automatically configured

50­60 Hz

167 W maximum continuous, 230 W peak input (not including monitor power) 112 W continuous output

Power Supply DC Output

Specifications

Physical - 13

Physical
Dimensions
Height: 6.0 in. (152 mm) Width: 13.0 in. (330 mm) Depth: 16.5 in. (419 mm) 24 lb. (11.3 kg) (Weight will vary based on internal devices installed.)

Weight

Specifications

Environmental - 14

Environmental
Operating Temperature Storage Temperature Relative Humidity Altitude
10­40° C (50­104° F)

­40 to 47° C (­40 F to 116.6° F)

5­90% (noncondensing) 0­3,048 m (0­10,000 ft.)

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Troubleshooting
Power Macintosh 7100 Series

Troubleshooting

General/ - 1

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 not resolve the problem, refer to the Flowchart for the product family. For additional assistance, contact Apple Technical Support.

Troubleshooting

Symptom Charts/Power Supply - 2

Symptom Charts
Power Supply
System does not power up 1 2 3 4 Reset logic board. (Refer to Additional Procedures.) Reseat ROM SIMM and cache SIMM. Replace power supply. Replace logic board.

Troubleshooting

Symptom Charts/Error Chords - 3

Error Chords
One-part error chord sounds during startup sequence 1 2 3 Disconnect hard drive power cable and hard drive data cable. Reboot system. If startup sequence is normal, run Macintosh Hard Disk test and replace hard drive if necessary. Disconnect floppy drive cable and reboot system. If startup sequence is normal, replace floppy drive. Replace logic board. Retain customer's SIMMs.

Troubleshooting

Symptom Charts/System - 4

System
Does not power on; screen is black, fan is not running and LED is not lit 1 2 3 4 5 6 7 1 2 Check cables. Plug monitor directly into wall socket, and verify that monitor has power. Reset logic board. (Refer to Additional Procedures.) Reseat ROM SIMM and cache SIMM. Replace power cord. Replace power supply. Replace logic board. Replace power supply. Replace logic board. Retain customer's SIMMs.

Clicking, chirping or thumping

Troubleshooting

Symptom Charts/System (Continued) - 5

System (Continued)
System shuts down intermittently 1 2 3 4 5 Check that air vents are clear. Thermal protection circuitry may shut down system. After 30 to 40 minutes, system should be OK. Replace power cord. Check batteries. Refer to "Battery Verification" in Additional Procedures. Replace power supply. Replace logic board. Retain customer's SIMMs.

Troubleshooting

Symptom Charts/System (Continued) - 6

System (Continued)
System intermittently crashes or locks up 1 2 Verify that system software is version 7.1.2 or later. Verify SIMMs are noncomposite and installed in like pairs (same size/speed). 3 Verify that software is known-good. 4 Verify that software is Power Macintosh compatible (contact developer). 5 Verify that a video card is installed in the PDS slot. 6 Clear parameter RAM. Hold down