Sun Microsystems 60

Chapter 8 Major Subassemblies 8-29

9. Disconnect the DC switch assembly power connector from motherboard connector

J3504 (FIGURE8-18).

FIGURE8-18 DC Switch Assembly Cable Routing

10. Remove the DC switch assembly power cable from the cable routing clips.

11. Remove the front panel (FIGURE 8-19):

a. Remove the front panel bezel.

b. Remove the front panel nameplate and light pipe.

c. Using a number 2 Phillips-head screwdriver, remove the four screws securing

the front panel to the chassis.

d. Remove the front panel from the chassis.

DC power connector

J3504

DC power cable routing

Contents

Main Page Contents Page Page Page Page Page Page Page Figures Page Page Page Tables Page Preface How This Book Is Organized UNIX Commands This document may not contain information on basic UNIXcommands and procedures. See one or more of the following for this information: Typographic Conventions Shell Prompts AaBbCc123 Page Related Documents Accessing Sun Documentation Online Ordering Sun Documentation Page Page Product Description Page 1.1 I/O Devices 1.2 System Unit Features Page 1.3 System Unit Components Note confirm a part number prior to ordering a replacement part. Page Page SunVTS Overview 2.1 SunVTS Description 2.2 SunVTS Operation Power-On Self-Test 3.1 POST Overview 3.2 Pre-POST Preparation 3.2.1 Setting Up a Tip Connection Note 3.2.2 Verifying the Baud Rate Note 3.3 Initializing POST 3.4 Maximum and Minimum Levels of POST 3.4.1 diag-level Variable Set to max Page Page Page Page Page Page 3.4.2 diag-level Variable Set to min Page Page Page 3.4.3 POST Progress and Error Reporting Note Page 3.5 Bypassing POST 3.6 Additional Keyboard Control Commands Note 3.7 System and Keyboard LEDs 3.8 Initializing Motherboard POST Note Note Note Page Troubleshooting Procedures 4.1 Power-On Failure 4.2 Video Output Failure 4.3 Disk Drive or CD-ROM Drive Failure Note 4.4 Power Supply Test Note Page 4.5 DIMM Failure 4.6 OpenBoot PROM On-Board Diagnostics test probe-scsi watch-net watch-clock 4.6.1 watch-clock 4.6.2 watch-net and watch-net-all 4.6.3 probe-scsi and probe-scsi-all 4.6.4 test alias name, device path, -all Note 4.6.5 UPA Graphics Card Note 4.7 OpenBoot Diagnostics 2. Verify that the OBDiag screen is displayed (CODE EXAMPLE 4-7). 3. At the ok prompt, type: obtest. 4. Verify that the OBDiag menu is displayed (CODE EXAMPLE 4-8). 4.7.1 PCI/Cheerio 4.7.2 EBus DMA/TCR Registers 4.7.3 Ethernet 4.7.4 Keyboard 4.7.5 Mouse 4.7.6 Floppy 4.7.7 Parallel Port 4.7.8 Serial Port A Note 4.7.9 Serial Port B The serial port B diagnostic is identical to the serial port A diagnostic. Note serial port B. 4.7.10 NVRAM 4.7.11 Audio 4.7.12 SCSI The SCSI diagnostic validates both the SCSI chip and the SCSI bus subsystem. or serial port B. 4.7.13 All Above The all above diagnostic validates the system unit. Page Page Page Safety and Tool Requirements 5.1 Safety Requirements 5.2 Symbols Caution Caution Caution 5.3 Safety Precautions 5.3.1 Modification to Equipment 5.3.2 Placement of a Sun Product 5.3.3 Power Cord Connection 5.3.4 Electrostatic Discharge 5.4 Tools Required Power On and Off 6.1 Powering On the System Unit Note 6.2 Powering Off the System Unit Caution Internal Access Note 7.1 Removing the Side Access Cover 7.2 Attaching the Wrist Strap Caution 7.3 Replacing the Side Access Cover Page Page Major Subassemblies 8.1 Power Supply 8.1.1 Removing the Power Supply Caution 8.1.2 Replacing the Power Supply Note 8.2 PCI Fan Assembly 8.2.1 Removing the PCI Fan Assembly 8.2.2 Replacing the PCI Fan Assembly 8.3 Hard Drive Bay With SCSI Assembly 8.3.1 Removing the SCSI Drive Bay Page 8.3.2 Replacing the SCSI Drive Bay Note 8.4 Cable Assemblies Note 8.4.1 Removing the Peripheral Power Cable Assembly 8.4.2 Replacing the Peripheral Power Cable Assembly 8.4.3 Removing the Diskette Drive Cable Assembly 8.4.4 Replacing the Diskette Drive Cable Assembly 8.5 EMI Filler Panels 8.5.1 Removing an EMI Filler Panel 8.5.2 Replacing an EMI Filler Panel 8.6 Chassis Foot 8.6.1 Removing the Foot 8.6.2 Replacing the Foot 8.7 Speaker Assembly 8.7.1 Removing the Speaker Assembly 8.7.2 Replacing the Speaker Assembly 8.8 DC Switch Assembly 8.8.1 Removing the DC Switch Assembly Page Page Page Page Page Page Caution Note Page Page Page 8.8.2 Replacing the DC Switch Assembly Caution Note Caution Page Page 8.9 CPU Fan Assembly 8.9.1 Removing the CPU Fan Assembly 8.9.2 Replacing the CPU Fan Assembly 8.10 Shroud Assembly 8.10.1 Removing the Shroud Assembly 8.10.2 Replacing the Shroud Assembly Page Storage Devices 9.1 Hard Drive 9.1.1 Removing a Hard Drive 9.1.2 Replacing a Hard Drive 9.2 Removable Media Assembly Drive Note 9.2.1 Removing the RMA Page 9.2.2 Removing the CD-ROM Drive or Any X-Option Tape Drive Page 9.2.3 Replacing the CD-ROM Drive or Any X-Option Tape Drive Note 9.2.4 Removing the Diskette Drive 9.2.5 Replacing the Diskette Drive Note 9.2.6 Replacing the RMA Page Motherboard and Component Replacement 10.1 CPU Module 10.1.1 Special Considerations for Systems With 450 MHz CPU Modules 10.1.2 Removing the CPU Module Page 10.1.3 Replacing the CPU Module 10.2 NVRAM/TOD 10.2.1 Removing the NVRAM/TOD Note 10.2.2 Replacing the NVRAM/TOD Note 10.3 PCI Card 10.3.1 Removing a PCI Card Page 10.3.2 Replacing a PCI Card Note 10.4 UPA Graphics Card 10.4.1 Removing the UPA Graphics Card Caution 10.4.2 Replacing the UPA Graphics Card Note 10.5 DIMM Caution Note 10.5.1 Removing a DIMM Caution Page 10.5.2 Replacing a DIMM Note 10.6 Audio Card 10.6.1 Removing the Audio Card Page 10.6.2 Replacing the Audio Card 10.7 Motherboard Caution Note 10.7.1 Removing a Motherboard Note Page Page 10.7.2 Replacing a Motherboard Note Page Note Illustrated Parts List Page Page Page Product Specifications A.1 Physical Specifications A.2 Electrical Specifications A.3 Environmental Requirements Page Signal Descriptions B.1 Keyboard/Mouse and Serial Ports A and B B.1.1 Keyboard/Mouse Connector B.1.2 Serial Port A and B (RS-423/RS-232) Connectors equipment( Page B.2 Twisted-Pair Ethernet Connector Caution B.3 UltraSCSI Connector 18 134 35 68 134 35 68 Page Page B.4 Audio Connectors B.5 Parallel Port Connector 113 25 14 Page B.6 Media Independent Interface Connector 120 21 40 120 21 40 Page B.7 UPA Graphics CardConnector Page Page Functional Description C.1 System Unit Page C.1.1 UPA Interconnect C.1.2 System Controller C.1.3 PCI Bus Note C.1.3.1 PSYCHO+ ASIC C.1.3.2 Symbios 53C876 SCSI Controller C.1.4 EBus2 Devices C.1.4.5 Audio C.1.5 UltraSPARC II Processor C.1.6 Memory System Caution Note Page Page C.1.6.1 DIMM C.1.6.2 Memory System Timing C.1.7 Graphics and Imaging C.1.7.1 Graphics Card Features C.1.7.2 Graphics Card Performance C.1.8 Peripherals C.1.8.1 CD-ROM Drive C.1.8.2 Diskette Drive SuperIO Diskette Drive Interface Supported Features Diskette Drive Connectors Diskette Drive Signals C.1.8.3 Hard Drives C.1.9 Other RMA Storage Device X-Options C.1.10 Keyboard and Mouse, Diskette, and Parallel Port C.1.10.1 Keyboardand Mouse Port C.1.10.2 Diskette Port Note C.1.10.3 Parallel Port Parallel Port Cables Electrical Characteristics C.1.11 Serial Port Serial Port Components Serial Port Functions EIA Levels Synchronous Rates Asynchronous Rates Slew Rate and Cable Length C.1.12 Ethernet C.1.12.1 Automatic Negotiation C.1.12.2 External Transceivers C.1.12.3 External Cables Note C.1.12.4 Connectors C.1.12.5 MII Power (Cheerio ASIC) C.1.13 Audio Card and Connector Page C.1.14 SCSI C.1.14.1 Host Adapter C.1.14.2 Supported Target Devices C.1.14.3 External Cables Note C.1.14.4 Internal SCSI Subassembly C.1.14.5 SCSI ID Selection C.1.15 ASICs C.1.15.1 K9+ Note C.1.15.2 Marvin C.1.15.3 Cheerio C.1.15.4 PSYCHO+ C.1.15.5 FBC C.1.15.6 RISC C.1.16 SuperIO C.2 Power Supply Note C.2.1 Control Signals C.2.1.1 Remote Enable PowerOn and PowerOff C.2.1.2 On/Off Functionality Page Turningthe System Unit Off Note C.2.1.3 System Unit Power Budget CPU Modules PCI Cards Memory System Mass Storage Devices C.2.2 Built-In Speaker C.2.3 Standard System Facilities C.3 Motherboard Page C.4 Jumper Descriptions ** C.4.1 Serial Port Jumpers C.4.2 Flash PROM Jumpers C.5 Enclosure C.5.1 Enclosure Basics Note C.5.2 Enclosure Features C.6 Environmental Compliance C.7 Agency Compliance C.8 Energy Star Software Support Page Page Glossary Page Page Page Index