manualshive.com logo in svg

Blackbox KV7118SA, User Manual, Page: 60 / 72

Share
Download
Blackbox KV7118SA User Manual Download Page 60

59

CHAPTER 5: Troubleshooting

5.2 Calling Black Box

If you determine that your ServSwitch Elite is malfunctioning, do not attempt to alter
or repair the unit. It contains no user-serviceable parts. Contact Black Box Technical
Support at 724-746-5500.

Before you do, make a record of the history of the problem. We will be able to

provide more efficient and accurate assistance if you have a complete description,
including:

• all information displayed in the 

VERSION

window (see Section 4.2.2).

• the nature and duration of the problem.

• when the problem occurs.

• the components involved in the problem—that is, what type of computers,

what type of keyboard, brand of mouse, make and model of monitor, etc.

• any particular application that, when used, appears to create the problem or

make it worse.

• the results of any testing you’ve already done.

5.3 Shipping and Packaging

If you need to transport or ship your ServSwitch Elite:

• Package it carefully. We recommend that you use the original container.

• Before you ship the unit back to Black Box for repair or return, contact us to

get a Return Authorization (RA) number.

Summary of Contents for KV7118SA

Page 1: ... 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Dr Lawrence PA 15055 1018 World Wide Web www blackbox com E mail info blackbox com Copyright 2002 Black Box Corporation All rights reserved Customer Support Information R R R R AUGUST 1998 ...

Page 2: ...d need an economical alternative to keeping two monitors keyboards and mice on your desk Or do you need to share dozens of computers including a mix of IBM PC RS 6000 Apple Macintosh Sun Microsystems and SGI compatibles among multiple users with different access levels Does your switch have to sit solidly on a worktable and use regular everyday cables Or does it have to be mounted in an equipment ...

Page 3: ...are either registered tradmark or trademarks of Microsoft Corporation in the United States and or other countries SGI is a registered trademark of Silicon Graphics Inc Sun Microsystems is a registered trademark of Sun Microsystems Inc Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners DISCLAIMER The information in this manual is subject to cha...

Page 4: ...rence in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Shielded cables must be used with this equipment to maintain compliance with radio frequency energy emission regulation...

Page 5: ...rt ist Der vorschriftsmäßige Betrieb mancher Gerät z B Meßsender kann allerdings gewissen Einschränkungen unterliegen Beachten Sie deshalb die Hinweise in der Bedienungsanleitung Dem Bundesamt für Zulassungen in der Telekommunikation wurde das Inverkehrbringen dieses Geräts angezeigt und die Berechtigung zur Überprüfung der Serie auf die Einhaltung der Bestimmugen eingeräumt ...

Page 6: ...ato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante 8 Servicio El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación Todo otro servicio deberá ser referido a personal de servicio calificado 9 El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso La colocac...

Page 7: ...ir una antena externa deberá ser localizada lejos de las lineas de energia 16 El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación 18 Servicio por personal calificado deberá ser provisto cuando A El cable de poder o...

Page 8: ...ocedure 20 3 4 1 Placing the Unpowered Switches 20 3 4 2 Cascading Switches Optional 20 3 4 3 Connecting the Console Equipment 23 3 4 4 Connecting the Computers 26 3 4 5 Connecting the Power 27 3 5 Initial Power Up Turning On the System 28 4 Operation and Configuration 30 4 1 Basic Operation 31 4 1 1 Switching Between Computers 31 4 1 2 Checking Port Computer Status 35 4 2 Higher Level Operation a...

Page 9: ...etting Security Options 53 4 3 Resetting the ServSwitch Elite 56 4 4 Making Connections Under Power 56 4 5 Power Outage Recovery 56 5 Troubleshooting 57 6 1 Common Problems 57 6 2 Calling Black Box 59 6 3 Shipping and Packaging 59 Appendix A Keyboard Commands for the On Screen Display 60 Appendix B Upgrading the Firmware 61 Appendix C RS 6000 Handling 63 Appendix D Interface Pinouts 64 D 1 IBM PC ...

Page 10: ...es an adapter such as our product code FA211 Mouse IBM PS 2 compatible two button Microsoft IntelliMouse or Logitech PS 2 compatible 2 or 3 button Interfaces Video VGA Keyboard and mouse IBM PS 2 compatible Resolution Up to 1024 x 768 noninterlaced Maximum Distance 12 ft 3 6 m of extension cabling to any attached keyboard monitor and mouse 50 ft 15 2 m of extension cabling to any attached CPU or c...

Page 11: ...se KV7118SA 1 set KV7148FA 4 sets MTBF 100 000 hours calculated Temperature Tolerance 50 to 104 F 10 to 40 C Humidity Tolerance 5 to 90 noncondensing Enclosure Cold rolled steel Power Input 100 to 120 VAC or 200 to 240 VAC at 50 to 60 Hz from utility power outlet through detachable power cord and IEC 320 male inlet Consumption 30 watts maximum Size KV7118SA 1 8 H 1U x 17 W x 10 8 D 4 4 x 43 2 x 27...

Page 12: ...tem 6000 RS 6000 or HP9000 compatible computers With one 4x8 KV7148FA model users at up to four user consoles can access any of up to eight such computers Both versions are enclosed in space efficient cases to save space on your desktop or in your rack 1U 1 8 4 4 cm high for the single user model 2U 3 5 8 9 cm high for the 4x8 model And you can attach as many as eight slave units of either version...

Page 13: ... PC AT keyboard ports and RS 232 serial mouse ports 2 2 2 IMPROVED VIDEO QUALITY The ServSwitch Elite supports standard display adapters and high resolution video Specifically they support analog VGA SVGA and XGA video as well as with the RS 6000 KV7160A or HP9000 KV7170A Converter Kit respectively RS 6000 or HP9000 video The Switch can drive video at a maximum resolution of 1024 by 768 pixels acr...

Page 14: ... with an RJ 45 plug is available on a special quote basis When you connect it to the Switch s rear panel AUX connector it can take the place of the keyboard for the purpose of selecting computers on the Switch Contact Black Box Technical Support for more information 2 3 Possible System Configurations ServSwitch Elites can be used in various system configurations to meet the needs of organizations ...

Page 15: ...2 A single 4x8 Switch system Monitor Monitor Console 1 Console 4 Keyboard Keyboard Mouse Mouse Keyboard Mouse and Video Extension Cables CPUs 4x8 SERVSWITCH ELITE KV7148FA Monitor SINGLE USER SERVSWITCH ELITE KV7118SA Keyboard Mouse CPUs Keyboard Mouse and Video Extension Cables ...

Page 16: ... ports on the master primary unit as shown in Figure 2 3 on the next page for the single user model or Figure 2 4 on page 16 for the 4x8 model Multiple slave Switches can be cascaded from the master in this manner For more information on cascaded systems see Section 3 4 2 Figure 2 3 A cascaded single user Switch system Monitor MASTER SINGLE USER SERVSWITCH ELITE SLAVE SINGLE USER SERVSWITCH ELITE ...

Page 17: ...ELITE Figure 2 4 A cascaded system with a 4x8 Switch master Monitor Monitor Console 1 Console 4 Keyboard Keyboard Mouse Mouse Keyboard Mouse and Video Extension Cables CPUs MASTER 4x8 SWITCH SLAVE SINGLE USER SWITCH ...

Page 18: ...ot connected to any port For example suppose the user at Console A has selected computer port 3 and the user at Console B has selected port 6 If Console A s user tries to select port 6 the request will be ignored and Console A will lose its connection to port 3 becoming disonnected from all of the computer ports until its user selects another If this is OK with you go on to Section 3 3 But if you ...

Page 19: ...f or cabinet failure causing equipment damage and possibly personal injury When you do connect the ServSwitch Elite to a power source connect it only to the type of power supply specified on the unit s housing Do not exceed the current or voltage capacity of the Switch or of your site s circuits Overloaded power sources extension cords etc pose fire and shock hazards Take these steps to rackmount ...

Page 20: ...19 CHAPTER 3 Installatiom Figure 3 1 Rackmounting the single user Switch with the RMK19E kit Figure 3 2 Rackmounting the 4x8 Switch with the RMK19E4 kit ...

Page 21: ...ystem the Switch connected to the main console s becomes the master or primary Switch a layer of slave or secondary Switches are connected to the master Switch s computer ports One master can accommodate eight slaves thus on a system with eight computers connected to each of the eight slaves the users on the master Switch s console s can access 64 computers One thing you have to remember in a casc...

Page 22: ... video extension cable into the associated HD15 female VGA connector You might want to bundle and label these cables for easy identification For your cascade connections we suggest that you start with CPU port One on the master Switch and use progressively higher numbered ports as necessary NOTE Later once you ve finished installing your ServSwitch Elite system and it s operational you ll be able ...

Page 23: ...itch CPU ports remain logically numbered 1 through 8 Slave Switch CPU ports become logically numbered 1 1 through 1 8 Keyboard Mouse and Video Extension Cables CPU Port 1 Console Port Master Switch CPU ports remain logically numbered 1 through 8 Slave Switch CPU ports become logically numbered 1 1 through 1 8 Keyboard Mouse and Video Extension Cables CPU Port 1 Console Port ...

Page 24: ... Cable is shown in Figure 3 8 on page 25 it is available in a 10 foot 3 m and 30 foot 9 m lengths but we don t recommend trying to run console side extension cabling farther than 12 ft 3 6 m in ServSwitch Elite applications because 18 ft 5 5 m is all the farther some keyboards and mice can be from the Switch and still operate If any of your keyboard mouse or monitor cables have different connector...

Page 25: ...e ServSwitch Elite 4x8 To Monitor To Monitor From CPU 3 s Video Port From CPU 2 s Video Port Power Inlet Power Inlet Power Switch Power Switch To CPU 3 s Keyboard Port To CPU 2 s Keyboard Port To CPU 3 s Mouse Port To CPU 2 s Mouse Port From Keyboard From Keyboard From Mouse From Mouse Auxiliary Auxiliary ...

Page 26: ...PTER 3 Installatiom Figure 3 8 The User Extension and CPU Extension Cables HD15 Central video strand Keyboard and mouse strands molded to sides Cross section 9 22 9 cm 10 25 4 cm 6 Pin mini DIN 6 Pin mini DIN ...

Page 27: ... 3 Run the video extension cable from the CPU s video port to the video connector of the same CPU port on the Switch When you re finished you might want to bundle and label these cables for easy identification If your computer has different keyboard mouse or video port connectors or if it uses sync on green video some adapters and special cables are available from us as stock items and some are av...

Page 28: ...ve finished installing your ServSwitch Elite system and it s operational you ll be able to connect additional computers to the Switch while the system is on When you power up a newly connected CPU the Switch will recognize it and you should be able to select it right away Whenever you make these kinds of changes to the system you should save its hardware configuration settings If you do not save t...

Page 29: ...keyboard monitor or mouse If the Switch is OFF however the PCs will probably either hang crash or boot into an abnormal state NOTE Later once your ServSwitch Elite system is fully installed and operational the Switch will help your computers recover from power outages All of the computers attached to a Switch that are designed to reboot themselves automatically without user intervention will do so...

Page 30: ... monitor should display the number of the CPU port it s connected to in a status flag box that looks something like this If the monitor doesn t display rev level info or a status flag check to make sure that it s plugged in turned on and connected to the Switch The 4x8 model will not make any automatic port selections consoles A B C and D will be deselected not connected to any CPU port at startup...

Page 31: ...the current screen is used to initiate the Switch s on screen menus and port switching process instead To print a screen displayed by a computer attached to the system you ll have to press Print Screen twice if the computer is attached to a single or master Switch or four times if the computer is attached to a slave Switch In cascaded systems this Print Screen keypress activates the menus and port...

Page 32: ...t or changed settings returns to next higher level menu Esc escape If pressed while typing in a new value or at a subsidiary menu aborts any changes in progress and returns to next higher level menu If pressed at a high level menu exits the on screen display Numeric keypad Always in the numeric state even if the Num Lock LED on the keyboard indicates otherwise Caps Lock Disabled use the Shift key ...

Page 33: ...r and the computers are named COMPUTER1 COMPUTER2 and so on 4 1 1 SWITCHING BETWEEN COMPUTERS Switching computer ports electrically disconnects your console s keyboard mouse and monitor from the currently connected computer and connects them to the newly selected computer In the ServSwitch Elite 4x8 s factory default cooperative state if another console is already connected to the selected compute...

Page 34: ...igned names they will be shown in alphabetical order Type in the computer s slave s name or the first portion of its name on the keyboard 3 Press Enter to make your selection For example to select the computer connected to Port 2 when the menu is ordered by port number you would press and release Print Screen then 2 then Enter Each time you switch computer ports the Switch first reconfigures your ...

Page 35: ...th seven computers ordered by port number left and name right SERVSWITCH ELITE NAME PORT CENTRALOFC 2 B DOWNTOWN 6 FOREIGN 7 MAGIC 1 SALES A 5 SALES B 4 SALES C 3 D 8 F1 HELP F2 FUNCTIONS SERVSWITCH ELITE PORT NAME 1 MAGIC 2 CENTRALOFC B 3 SALES C D 4 SALES B 5 SALES A 6 DOWNTOWN 7 FOREIGN 8 F1 HELP F2 FUNCTIONS ...

Page 36: ...stem The order in which the computers are listed by port number or by name is determined as described in Section 4 2 8 The status is indicated by the characters in the two right hand columns The third column will contain one of these characters Null blank Either the device attached to this port is turned off or unplugged or there simply isn t any device attached Plus There is a powered computer at...

Page 37: ... keyboard ports see Section 4 2 4 Single user KV7118SA model only Broadcasting to multiple computers in the system see Section 4 2 5 Configuration functions the SETUP submenu Setting up a special scan pattern see Section 4 2 6 Assigning unique names to the computers in the system see Section 4 2 7 Listing computers by name or port number in the on screen windows see Section 4 2 8 Changing the posi...

Page 38: ...or move the mouse The scan stops at the currently connected computer On the ServSwitch Elite 4x8 KV7148FA each of the four consoles can scan the system independently You can scan computer ports controlled by other consoles if those ports are on a master or single Switch however if you try to scan any port on the same slave Switch as a port controlled by another console or if you try to stop the sc...

Page 39: ...VERSION and press Enter the VERSION window will appear Figure 4 2 The VERSION window In this window the keyboard information includes enabled disabled typematic rate LED settings scan mode and keyboard type The mouse information includes enabled disabled sample rate resolution and mouse type Note that the entry for DIP SWITCH F will appear on both single user and 4x8 units but only 4x8 units will ...

Page 40: ...steps 1 Press Print Screen The SERVSWITCH ELITE window appears on the display 2 Press F2 and the FUNCTIONS window appears The Commands menu will be displayed 3 Using the up and down arrow and keys move the highlight bar to SNAPSHOT 4 Press Enter The hardware settings are now saved to memory 4 2 4 RESETTING THE MOUSE AND KEYBOARD PORTS If you want to try to restore the correct keyboard and mouse se...

Page 41: ... keyboards For the mouse to work accurately all systems must have identical mouse drivers identical desktops and identical video resolutions In addition the mouse must be in exactly the same place on all screens Because these conditions are extremely difficult to achieve broadcasting mouse movement to multiple systems might have unpredictable results While broadcast mode is on the status flag will...

Page 42: ...t bar to BROADCAST in the Commands menu 8 Press Enter to activate broadcast mode The on screen display will disappear Type in the keyboard data and or make the mouse movements you want to broadcast When you re finished press Print Screen then F2 then scroll down to BROADCAST in the Commands menu and press Enter to turn broadcast mode off If you want to broadcast to a set of ports that includes sla...

Page 43: ...sted select whether or not you want the computer to receive broadcast keyboard or mouse data Use the up and down arrow and keys to move up and down the port list the right and left arrow and keys to move back and forth between the columns and the or key to toggle between YES and NO 10 Press Enter to save the settings 11 Repeat steps 2 through 10 for every other slave Switch with a port you want in...

Page 44: ...row key to move the highlight bar so that the Setup menu is displayed and its first entry SCAN is highlighted 3 Press Enter The SCAN PATTERN SETUP window appears with the first port position or computer name highlighted In the sample window shown in Figure 4 4 below the Switch s ports are ordered by port number if you have the ports ordered by name instead see Section 4 2 8 the PORT and NAME colum...

Page 45: ... anyway place the highlight bar on the topmost port to be removed and press the Delete key not the Del key on the numeric keypad The highlighted port and all ports below it will be removed from the list 6 Press the down arrow key to move the highlight bar to the next line 7 Repeat steps 5 through 7 as necessary for your remaining computers 8 When you ve finished setting the scan pattern press Ente...

Page 46: ... network for each computer Assign names as follows 1 Press Print Screen The SERVSWITCH ELITE window appears on the display 2 Press F2 and the FUNCTIONS window appears The Commands menu will be displayed Press the right arrow key to move the highlight bar so that the Setup menu is displayed 3 Using the up and down arrow and keys move the highlight bar to NAMES 4 Press Enter The PORT NAMING window a...

Page 47: ...ally be converted to uppercase the digits 0 through 9 and the dash hyphen minus character Press Backspace to delete an incorrect entry or an entry for a device that has been removed from the system Repeat this step as necessary NOTE Before you can name computers attached to a slave Switch you have to tell the master Switch that the slave is in fact a slave see Section 4 2 10 6 Press Enter to save ...

Page 48: ...e To change attributes of the on screen menus take these steps NOTE It is possible when you change the menu attributes to distort the appearance of the menus windows so that they are hard or impossible to read which obviously makes it difficult to correct the problem If this occurs you can reset the ServSwitch Elite to its factory default values for all options accessible through the on screen dis...

Page 49: ...y default value is 640 Height Affects the size of the text in the menus and windows The larger the value the larger the text Possible settings are 1 1 pixel to 63 63 pixels The factory default value is 16 Horizontal Affects the left to right positioning of the menus and windows on the display Possible settings are 1 1 pixel from the far left to 127 127 pixels from the far left which is as far righ...

Page 50: ... value is 0 zero no delay You can increase this delay if you find the window becoming a distraction when you perform simple computer switching operations at the keyboard Order Determines the order in which the computers are listed in the menus and windows numerically by port number the factory default value or alphabetically by assigned name NOTE Before you take a formerly autonomous single Switch...

Page 51: ...he screen none timed or constant Its position on the screen or Its color and opaqueness To change the flag s attributes take these steps 1 Press Print Screen The SERVSWITCH ELITE window appears on the display 2 Press F2 and the FUNCTIONS window appears The Commands menu will be displayed Press the right arrow key to move the highlight bar so that the Setup menu is displayed 3 Using the up and down...

Page 52: ... value is 0 Column Determines the flag s horizontal position on the screen This will always depend on the horizontal position set for the menu windows see Section 4 2 8 The status flag will be displayed where one of the text columns in the windows would be Valid values range from 1 far left column to 25 far right column The factory default value is 1 Color Determines the flag s background color Po...

Page 53: ... through this assignment Assign a device type this way 1 Press Print Screen The SERVSWITCH ELITE window appears on the display 2 Press F2 and the FUNCTIONS window appears The Commands menu will be displayed Press the right arrow key to move the highlight bar so that the Setup menu is displayed 3 Using the up and down arrow and keys move the highlight bar to DEVICES 4 Press Enter The MONITOR SETTIN...

Page 54: ... unauthorized use By engaging the ServSwitch Elite s security features you can lock the keyboard mouse and monitor independently for each console on the 4x8 model requiring users who want to use the console to type a password before the console will resume operating normally You can lock the console manually or you can set the Switch to lock the console after a time delay inactivity timeout expire...

Page 55: ...ght bar will move to REPEAT NEW and you will have to type the password in again to confirm your choice CAUTION Be very careful to memorize your new password or record it in a safe place If you forget or lose your password you will have to call Black Box Technical Support for instructions on how to recover your system If you aren t all that concerned about security but would like to blank the monit...

Page 56: ...s about blanking the monitor screen when the console is locked highlight MODE use the and keys to select either ENERGY or SCREEN Use ENERGY mode with EnergyStar compliant monitors that go into sleep mode power saver state after a period of inactivity elapses in this mode the Switch blanks the monitor by causing it to go into sleep mode Use SCREEN mode with monitors that aren t EnergyStar compliant...

Page 57: ... a new device the Switch recognizes it and configures it to the settings required by the currently selected computer This feature makes it possible for you to replace failed devices without having to restart the system Whenever you attach new computers or slaves or whenever you swap out the mouse or keyboard you should save the Switch s hardware configuration settings If you do not save the settin...

Page 58: ...efaults see the note on page 47 No video on one particular computer 1 Computer off or unplugged Power up the computer connected to that port 2 Loose video connection Reconnect video cable 3 Defective video cable Replace video cable Can t select computers 1 Computer off or unplugged Power up the computer connected to that port 2 Keyboard did not initialize Reset keyboard and mouse with ServSwitch E...

Page 59: ...ve mouse extension cable Replace cable 3 Using serial port on computer Either install serial mouse adapter kit KV7150 or replace mouse with PS 2 style mouse or mouse compatible with CPU mouse port Mouse behaves erratically Computer left mouse in indeterminate state Reset CPU mouse port see Section 4 2 4 or reset ServSwitch Elite see Section 4 3 Mouse pointer frozen on display Mouse not initialized...

Page 60: ...in the VERSION window see Section 4 2 2 the nature and duration of the problem when the problem occurs the components involved in the problem that is what type of computers what type of keyboard brand of mouse make and model of monitor etc any particular application that when used appears to create the problem or make it worse the results of any testing you ve already done 5 3 Shipping and Packagi...

Page 61: ...or row in the current menu Ø down arrow Moves down one field or row in the current menu Æ right arrow or Tab Moves one field or column to the right wrapping downward at right edge or highlights adjacent menu left arrow or Shift Tab Moves one field or column to the left wrapping upward at left edge or highlights adjacent menu plus Increases or cycles forward the value in the currently highlighted f...

Page 62: ...signals that occurs when the Switch is turned off and will malfunction otherwise 1 Get the tools you will need a small Phillips screwdriver and a chip puller If you don t have a chip puller you can use a small flat blade screwdriver 2 Save the current hardware settings of the ServSwitch Elite system see Section 4 2 3 3 Very important Turn the Switch off unplug its power cord from the AC outlet and...

Page 63: ... to Figure A 1 on the previous page Press firmly to make sure that the chip is seated properly in the IC socket then do one last visual inspection to make sure that all of the pins on the new chip go straight into the socket 7 Replace the access panel screw the screws back in and return the ServSwitch Elite to service If it does not appear to work properly when you hook it back into the system cal...

Page 64: ...n schemes that PCs usually don t In particular the RS 6000 models with 3C3 video ports use a video format called sync on green In this format the composite sync signal and its ground are carried on the same wire s as the green color signal and its ground Any graphics system that uses sync on green will require an adapter in order to be attached to the ServSwitch Elite In the case of the RS 6000 th...

Page 65: ...and very early AT computers to reset the keyboard Contemporary AT compatible computers either do not use it or do not connect it D 2 IBM PC AT Compatible Serial Mouse TIA 574 pinout of EIA TIA RS 232 C D on DB9 DE9 connectors Pin Signal Circuit Signal Signal Name Function Source 1 Received Data Data Mouse 3 Transmitted Data Data Computer 4 Data Terminal Ready Control Computer 5 Signal Ground Groun...

Page 66: ...1 n a n a 3 Ground Ground n a 4 5 VDC Voltage Computer 5 Keyboard or Mouse Timing Computer Clock 6 Reserved1 n a n a 1These pins are normally not used or not connected but some KVM switches not including the ServSwitch Elite use them to carry the RS 232 serial transmit data signal and signal ground respectively in order to be more easily adaptable for use with serial mice and serial mouse ports 1 ...

Page 67: ...omputer 15 ID 36 Control Monitor 1This pin is sometimes not used or not connected 2This pin is sometimes used as a ground 3In standard implementations this pin is not only not connected the space where it would be in the connectors is simply left blank 4This is the ground for all of the non video signals 5In the original VGA standard if the computer senses that Pin 11 is a ground and Pin 12 is not...

Page 68: ...67 CHAPTER ...

Page 69: ...68 SERVSWITCH ELITE NOTES ...

Page 70: ...69 CHAPTER NOTES ...

Page 71: ...70 SERVSWITCH ELITE NOTES ...

Page 72: ...71 CHAPTER NOTES ...

Reviews:

No comments