Cables to Go KNV108D Troubleshooting, Symptom, Possible causes Recommended solutions, the Master

Page 15
Troubleshooting:

Troubleshooting:

Ensure that all cables are well seated. Check that keyboard/mouse cables are not swapped. Label and bundle the cables for each computer to avoid confusion when connected to the KVM Switch.

Symptom

 

Possible causes Recommended solutions

No OSD screen

.No power to KVM Switch

.Establish power by turning on

 

 

 

 

 

 

 

 

computers, wait, press left CTRL

 

 

 

.Loose monitor

 

keys several times.

 

 

 

connection

 

 

.Reconnect monitor

 

 

 

Monitor not multi-sync

 

.Use multi-sync monitor

Keyboard error

.Loose keyboard

 

.Make sure keyboard cables are

on boot

 

connection

 

 

Well seated

Master/slave

 

.Improper

 

installation

.Make sure slave’s CONSOLE is

does not work

procedures

 

 

connected to Master’s PC 1~ PC

 

 

 

 

 

 

 

 

8 port

 

 

 

 

 

 

 

 

.Press and hold the 1 and 2

 

 

 

 

 

 

 

 

push buttons to initiate K/M reset

 

 

 

 

 

 

 

 

.Remove any possible power

 

 

 

 

 

 

 

 

supply to the slave (unplug all

 

 

 

 

 

 

 

 

cables), before connecting it to

 

 

 

 

 

 

 

 

the Master

Keyboard

 

.The computer was in

 

.Press both SHIFT keys

strokes shifted

shifted state when last

 

 

 

 

switched

 

 

 

 

The and

.All PCs

are

off or

only

.Turn computers on.

keys

do

not

one

PC

is

turned

on.

 

work in Manual

Scan

mode

works

for

.Press any other key to abort

Scan

 

 

power-on computers only

Manual Scan mode.

 

 

 

.Scan type is eye mark

.Set proper Scan type in OSD

 

 

 

selected but no PC is eye

and determine which PCs are

 

 

 

mark selected in OSD.

eye mark selected, do it in OSD.

Auto Scan does

.All PCs

are

off or

only

.Turn on computers

not switch

PC

one

PC

is

turned

on.

.Set proper Scan Type in OSD

and

KVM

Scan

mode

works

for

and determine which PCs are

Switch

beeps

power-on computers only

eye mark selected, do it in OSD.

from

time

to

.Scan type is

eye mark

.Press left CTRL key twice to

time

and

red

selected but no power-up

abort Auto Scan mode.

indicator

 

PC is eye mark selected

.Press any front button to select

flashes

 

in OSD.

 

 

 

a PC, and Auto Scan stops.

28

Double OSD

 

 

.Improper slave

 

 

 

.Press push buttons 1 and 2

images at

 

 

 

connection procedure.

 

down for 2 seconds to activate

cascade

 

 

 

 

 

 

 

 

 

 

K/M RESET.

 

 

configuration

 

 

 

 

 

 

 

 

. Remove any possible power

 

 

 

 

 

 

 

 

 

 

 

 

supply to the Slave (unplug all

 

 

 

 

 

 

 

 

 

 

 

 

cables), before connecting it to

 

 

 

 

 

 

 

 

 

 

 

 

the Master.

 

 

OSD

menu

is

.OSD

menu

 

has

fixed

.Use

<F4>:More\Position

to

not

at

 

the

resolution

and

its

size

select

UL

or UR.

OSD menu

proper position

 

varies

due

 

to

computer

may appear near

the middle of

 

 

 

 

 

VGA resolution changes.

the screen when

LL or LR

is

 

 

 

 

 

 

 

 

 

 

 

 

selected.

 

 

 

Computer

 

can

.Loose mouse adapter

 

.Secure the mouse adapter to

not use

serial

 

 

 

 

 

 

 

computer’s COM port

 

mouse

 

 

 

 

.Incorrect mouse adapter

.Use

only the mouse adapter

 

 

 

 

 

 

 

 

 

 

 

 

comes with the unit

 

 

Can not select a

.Improper

Master

 

unit

.Only Master ports PC1~PC8 can

computer

 

 

 

connection

 

 

 

 

 

be connected to slaves.

 

connected

to

a

.Improper

 

slave

 

unit

.Connect slave CONSOLE port to

slave

 

 

 

 

connection

 

 

 

 

 

PC1~PC8 ports of the Master

 

 

 

 

 

 

.Too

many

levels

 

of

.Only one level of slave units is

 

 

 

 

 

slaves

 

 

 

 

 

 

allowed.

Pop up OSD again to

 

 

 

 

 

 

 

 

 

 

 

 

check if Master recognizes the

 

 

 

 

 

 

 

 

 

 

 

 

slave

connection.

Look

for

 

 

 

 

 

 

 

 

 

 

 

 

triangle mark and the number

 

 

 

 

 

 

 

 

 

 

 

 

before it.

 

 

 

The

 

KVM

.Computers do not supply

.Make sure a power adapter with

Switch

fails

to

enough power.

 

 

 

minimum of 9V 500mA output

function

 

 

 

 

 

 

 

 

 

 

rating is firmly connected to the

occasionally.

 

 

 

 

 

 

 

 

 

power jack.

 

 

29

Image 15
Contents Overview One-Console KVM SwitchesTwo-Console KVM Switches IntroductionAutomatic Mouse Conversion FeaturesExtra features for On-Screen Display model More features for multi-access modelsFigure 1 A single KVM Switch configuration ConfigurationsSingle KVM Switch Configuration Cascade Master/Slave ConfigurationInstallation Device ConnectionFigure 3 Master console connection Figure 4 Master computer connection Initial Power-UpReplace Master Console Devices Adhesive Rubber FootOptional Rack Mount Accessories Figure 6 Attaching rack mount bracketFigure 7 Assembling rack cable support K/M RESET Multimedia ModuleOperation Front Panel Push ButtonsOSD On-Screen-Display Operation KNV104D,KNV108D,KNV116D,KNV2108D,KNV2116DFigure 9 OSD screen illustration Audio Stick Ready PC In Scan mode, scan through power-onAuto Scan Manual ScanCH Display Scan RateKeyboard Speed Hotkey MenuHot-key commands Figure 12 Cascaded 8-port KVM Switches Cascade ConfigurationConnection Figure 11 Cascaded 4-port KVM SwitchesFor OSD model Multi-access KVM SwitchChange Configuration while Running ConnectionsAppendices ConfigurationSpecifications Operationthe Master TroubleshootingSymptom Possible causes Recommended solutionsLimited Warranty