Bosch LTC 8555 Manual de instrucciones descargar pdf (Pagina 53)

Bosch Security Systems | December 8, 2004

LTC 8100, LTC 8200, LTC 8300 Series | Instruction Manual | Troubleshooting

17.0 TROUBLESHOOTING

Allegiant systems are designed to perform reliably for long periods of time. All circuitry consists of state of the art

components designed around a single bay concept. If troubleshooting becomes necessary, follow these guidelines:

Problem Description/Solution

System Checkout

Front panel power LED is not lit. • Check the main AC supply source.

Green STATUS LED on front panel is not blinking

and BATTERY LED is off.

• Remove power from unit for 30 seconds. Apply power and verify that the STATUS

LED is blinking. If still not functional, seek service.

• If Red BATTERY LED is lit, replace microprocessor board batteries. Follow

procedure outlined in Maintenance Information Section.

Keyboard Checkout

No keyboard display indicators. • Check interconnect cable for cut or broken wires between the keyboard and the

main bay and replace cable if necessary.

• Relocate keyboard connector on the bay to another keyboard input port.

• Replace keyboard.

Keyboard indicators lit but keyboard is inoperative. • Verify that the keyboard is loggedon to the system (if logon feature is enabled).

• Check interconnect cable for cut or broken wires between the keyboard and the

main bay and replace cable if necessary.

• Relocate the keyboard connector on the bay to another keyboard input port.

• Replace the keyboard.

Limited keyboard functions. • If possible, perform local the keyboard test described in Section 13, KEYBOARD

USER FUNCTIONS to verify operation of all keys. If this local test cannot be performed,

replace the keyboard.

• LTC 8059/00 MCS for Windows package users or LTC 8850/00 GUI software

users should refer to lockout tables to determine if the problem is related to user

restriction tables. If table settings are verified and no discrepancies are found,

replace the keyboard.

Keyboard Joystick not centered. • If the analog joystick of the system keyboard becomes un-centered due to normal

wear, it can be recalibrated. If using the IntuiKey keyboard, go to the Keyboard

Control menu and press Joystick Auto Calibrate. If using the LTC 8555 Series

keyboard, refer to User Function 1 procedure.

Video Monitor Display Checkout

No video display on any monitor. • Verify proper CPU operation as described above under System Checkout.

No video display on some monitors. • Verify that an operational camera is selected on suspect monitors.

• Confirm that the monitor is operational.

• Check the monitor coax connections.

• Verify that the coax connection is to the correct monitor output on the rear of the

bay.

Poor video on monitor. • Check the monitor for proper termination.

• Check operation of a known good camera, directly to monitor.

Partial or no on-screen alphanumeric display. • Check user-selectable brightness feature (via User 5 Function) and then verify that

alphanumeric display has been enabled (via User 6 Function). Position the overlay

with User 4 Function.

Time and Date portion of the on-screen display

alternates with ?? ?? ??, and the LED on the front

panel indicates a low battery condition.

• Replace CPU batteries.

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Bosch LTC 8555 Manual de instrucciones Pagina 53

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