Black Box ServSwitch manual Your monitor display is fuzzy

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MATRIX SERVSWITCH™

Your monitor display is fuzzy.

A. Check the settings of your monitor, especially the sharpness control.

B. If you can’t solve the problem by changing the monitor settings, you might have run cable too far; maximum distance of original Serv type CPU or User Cable (not including Expansion Cable) from any CPU to the shared monitor, keyboard, and mouse is 25 ft. (7.6 m)—or less, if you are using SVGA video. You might need to upgrade from original Serv cables to coaxial cables that carry the video signal better. If you are already using coax cables, you might need to add Station Extenders (our product codes AC253 etc.) or CAT5 KVM Extenders (our ACU1000 and ACU3000 series of product codes); call Black Box for technical support. See Section 3.2.3 and Appendix B.

Your video is not synchronized or is the wrong color.

A. Check the settings of your monitor, especially the sync or color controls.

B. Your monitor might not be capable of synching to the selected video resolution or frequency (refresh rate). Try a lower resolution or frequency or a more powerful monitor.

C. There might be a sync mismatch between a CPU and the monitor; for example, perhaps the CPU is sending video with composite sync or sync on green and the monitor only accepts horizontal or vertical sync. Change the settings of the CPU or monitor so that the two are compatible. If this is not possible, swap in a different monitor that can handle all of your CPUs’ synchronization types.

D. If the video problem is not centered on the monitor itself, check the monitor cable and the video strand of the CPU Cable. Tighten any loose connections.

E. If no cable connectors are loose, begin swapping your cables one at a time. If the problem goes away when you substitute a cable, the old cable is probably defective.

F. If swapping cables doesn’t solve the problem, try plugging the CPU into a different CPU port on the Matrix ServSwitch. If the problem goes away when the CPU is connected to a different port, the old port is probably defective.

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Contents SW741A-R3 SW742A-R3 SW743A-R3 SW761A-R3 SW762A-R3 SW763A-R3 SW741A-R3 SW742A-R3 SW743A-R3 SW761A-R3 SW762A-R3 SW763A-R3 Welcome to the ServSwitchTM FamilyMatrix Servswitch European Union Declaration of Conformity Matrix Servswitch NOM Statement Contents Table of Contents Matrix Servswitch Appendix Hardware SpecificationsMaximum SpecificationsPower Temperature ToleranceWeight Maximum AltitudeComplete Package IntroductionUpgradability FeaturesCompatibility SecurityOn-Screen Display Technology FlexibilityFront Panel Front panel of a 2 x 16 Matrix ServSwitch SW743A-R3Panel Label Description Right/Green CPU PowerLeft/Red Select Rear Panel Designation Connector DescriptionKVM 1 See SectionRS-232 N Equipment Requirements Cable RequirementsQuick Setup Guide Installation and PreconfigurationCpus Installation and Preconfiguration Matrix Servswitch Keyboard mapping by the Matrix ServSwitch Monitor Video quality vs. distance for original Serv cables Video quality vs. distance for coaxial cables Important Note Installation ProcedureRackmounting Optional Connecting Cpus Connecting Other Matrix Servswitches Optional Powering UP the Switches Switching and Accessing the Display from the Keyboard Expansion Module and its input and output ports Daisychaining Matrix ServSwitchesBus topology Ring topology Power-Up Procedure Diagnostic screen Ports see Section Diagnostic Messages DescriptionSection Main Program Error Kernel ErrorSram Error Configuration Checksum ErrorKernel is bad, load new kernel through serial port Error reason Hit space bar within 5 seconds to get serial options menu Initial Configuration Initially Configuring Multiple Daisychained Units CPU Ports KVM Full ConfigurationUsing the Menu Saving configuration changes Configure password Configuring the SystemStarting computer number PC keyboard delayMaximum computer PC keyboard rateMenu color scheme Sun keyboard language multiplatform models onlyScreen saver Screen saver timePosition Background color, text colorFadeout Computer Number Configuring ComputersComputer Name Keyboard Bus Configuring User StationsKVM Name ResolutionStart ProfilePassword Configuring User DefinitionsUser name Configure Profile Configuring User ProfilesName AccessConnect Scan ShareLogout Group n where n = 1 through Configuring GroupsComputer Group Name Status PowerComputers SlotUser VerStatus Logging On-Screen Functions, Same-Port Users, and Connection ModesStatus Control Room Connection-Status MessagesReasons for connection failure Disconnect-status message Reasons for disconnection User Stations Attached to Same-Numbered Ports A 6-user-by-8-computer Matrix ServSwitch/ServShare system Connection Modes Connection dynamics between users Command Summary Keyboard CommandsKeyboard Commands Display CPU List Ctrl Esc Display Configuration Menu Ctrl F12Switch to the Previous Port in Sequence Ctrl Switch to the Next Port in Sequence Ctrl +Switch to the Prior Port Ctrl ← or Ctrl Backspace Select Computer Ctrl xxxx EnterDisplay User-Station Status Ctrl D Reset Ctrl RLog Out Ctrl L Disconnect Ctrl QSend Null Byte to PS/2 Type Mouse Ctrl N Reset/Enable Mouse in Windows NT and Unix Ctrl OStart Scan Ctrl S Identify Firmware Revision CtrlEnd Scan Ctrl Pass This Command Through Ctrl X or Ctrl TabBasic Setup Establishing a Serial Connection Using the Serial PortsSerial Options Menu Using the Serial PortsEnter the starting cpu number → Waiting for file Receive failed Try again Y/N Sending flash program code to system Flash programming Option 8. Exit and Restart Unit Common Problems Troubleshooting Characters that you type come up wrong or missing You can’t switch ports from the keyboardAn IBM compatible computer’s mouse driver doesn’t load You can’t seem to scan or switch to certain ports at allYour PS/2 mouse gets out of sync You can’t access all the functions of your mouseYour mouse doesn’t move the pointer/cursor Your video is not synchronized or is the wrong color Your monitor display is fuzzyMatrix ServSwitch doesn’t work with your IBM ThinkPad Matrix ServSwitch doesn’t work with your docking stationYour on-screen display is not synchronized Shipping and Packaging Calling Black BoxDerived from hardware Appendix a Nvram Factory Defaults100 Appendix B Cable Product Codes 102 103 Appendix C Pinout of Serial Ports Key Pressed on Scan Code LK461 Keyboard Appendix D The LK461 KeyboardSetting the RING/BUS Jumper Jumper JP1 on Expansion Modules Appendix E Installing Modules Matrix ServSwitchSwapping In an Expansion Module Swapping In a Terminator Module Not Recommended Appendix F Rackmounting Matrix ServSwitch Figure F-1. Rackmount assembly Page Page

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