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Apple 5260, 5280 manual Adjustments Power Supply Adjust control R828 so

Models: 5260 5280

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Troubleshooting Install Symptom Charts Chassis/Wiring Harness Warranty Cuda Chip Reset Diagnostics Light Meter Setup External Video Connector Battery

Page 214

5260 and 5280 Adjustments

Power Supply - 31

3 Adjust control R828 so

R828

that the voltmeter reads

110 VDC.

Page 213 Page 215

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Apple 5260, 5280 manual Adjustments Power Supply Adjust control R828 so

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Contents

Power Macintosh/Performa 5260, 5280 Series Basics System Overview 5260/120 Service Strategy Ordering Warranty and AppleCare Diagnostics Design for Serviceability User Controls Internal Expansion Connections Intelligent Device Electronics IDE Hard Drive Processor Direct Slot PDS Video-In Card Mpeg Card TV Tuner Module TV/FM Radio Tuner Card Page Page Page External Video Connector Apple Presentation System Cuda Chip CRT and Degauss Frame Front View Rear View Panel 5260/5280 Logic Board Speciﬁcations Processor CPU Memory Disk Storage Interfaces Sound Output TV Tuner Devices Sound and Video Sound Generator Built-in Video Monitor Timings 640x480 Resolution At 60 Hz Monitor Timings 640x480 Resolution At 66.67 Hz Monitor Timings 800x600 Resolution At 60 Hz Monitor Timings 800x600 Resolution At 72 Hz External Video Connector Optional Electrical Weight Physical Temperature Environmental Troubleshooting General First Checklist Symptom Charts System System Page Audio Page Video Page Page Screen Page Page Page Floppy Drive Page Hard Drive XXX CD-ROM Drive Page Page Peripheral Cannot Page Miscellaneous Screen Page Page Take Apart Drive and Control Bezel Page Replacement Note Insert Floppy Drive Page Page Page CD-ROM Drive Page Page Replacement Note Retain Front Panel Control Board Page Replacement Note Using a Replacement Note Tilt Replacement Note Door Take Apart Door Remove the two security Screws Swing the door down until it snaps closed Logic Board Page Page Page Replacement Note Verify Replacement Note Align Rear Housing Page Page ±Warning This step Front Bezel Page Replacement Note Guide Internal Microphone Take Apart Internal Microphone LIft off the microphone Rear EMI Shield Page Page Page Speakers Page Take Apart Speakers Tilt the speaker Remove it Take Apart Speakers Take Apart Hard Drive Page Replacement Caution Some Page TV Tuner Page Page Power Supply Page Page Page Page Video Board Page P901 2PIN P902 1PIN Analog Shield Page Page Analog Board Page Page Page Take Apart Analog Board Microphone Connector Fan Page Page Tilt/Swivel Base Page Tabs at the front of the tilt CRT Page Page Page Take Apart CRT Chassis/Wiring Harness Page Upgrades TV or TV/FM Tuner Page Page Simm Upgrade Page Communications Card Installation Upgrades Communications Card Installation Through Replacement Note If you Insert the card connector UpgradesExternal Video Connector Upgrades External Video Connector Upgrades External Video Connector Upgrades External Video Connector Insert the slotted metal Upgrades External Video Connector Insert the connector end Page Installation L2 Cache LC PDS Card Additional Procedures Battery Verification Additional Procedures Battery Verification Replacement Page Cuda Chip Reset Logic Board Reset Page Additional Procedures Logic Board Reset Page Adjustments Light Meter Setup Model R77Page Page Page Model L-248 Model Geometry 5280 Adjustments Geometry Horizontal Shift Vertical Shift Horizontal Size Vertical Size Focus Convergence YHC Control YV Control Geometric Distortion Pincushion Control E/W Keystone Control R438 Video 5280 Adjustments Video Following adjustments Run Display Service Utility Gray Bars Test Pattern R437 Adjust the Screen Screen 5280 Adjustments Video Run Display Service R910 R940 Gray Bars Test Pattern 5280 Adjustments Video Open the Screen control If the screen shows a Run Display Service Utility All-White Screen Test Pattern R500 Sub-Brightness Control 5280 Adjustments Power Supply 5280 Adjustments Power Supply Adjust control R828 so Exploded View Exploded View

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