Bosch LTC 8555 Manual de instrucciones descargar pdf (Pagina 34)

30 en | Troubleshooting Allegiant Keyboards

F.01U.127.290 | 2.0 | 2009.03 Instruction Manual Bosch Security Systems, Inc.

9 Troubleshooting

9.1 General

Problem Possible Causes

No Power Indication – If powered from a non-modular type Allegiant, try another

keyboard port on the Allegiant. The port may have failed.

– If powered from a modular type Allegiant, check the fuse on

main Allegiant power supply. Try another keyboard port.

– If powered from a separate power source, check power source

or main AC supply of power source.

– If power source is confirmed to be OK, the keyboard may have

an internal failure. Swap suspect keyboard with a known good

keyboard.

LED Displaying Flashing dashes – If the login feature is enabled, the keyboard may be logged off.

(User LED lit and OFF LED lit)

– If the login feature is not enabled, or the keyboard port is

logged in, there is likely a data communication error. Test the

keyboard cable in another keyboard port. Swap the suspect

keyboard with a known good keyboard. Try another keyboard

data cable. Check keyboard data cable connections.

– If using RS-232 protocol models with a dial-up modem link, the

keyboard may be waiting for the operator to dial a phone

number and establish communication with the Allegiant.

Non-operating Key or LED Digit – If a key does not seem to be working, verify that the attempted

function is applicable to the device being controlled, or the

switcher’s current situation.

– Key or LED may be defective. Run the User Function 1 test

described in section below.

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Bosch LTC 8555 Manual de instrucciones Pagina 34