Bosch Appliances LTC 8600 Remote Receiver/Driver Functions Inoperative, No Alarm Response

104 en LTC 8600 LTC 8800 Series

22.4Remote Receiver/Driver Functions Inoperative

1.All receiver/drivers and functions inoperative: Verify power LED indicator on Signal Distribution Unit is lit. If not, check fuses on front of main CPU bay power supply. Verify the Code LED indicator flickers when control is activated by the keyboard. If not, replace Signal Distribution Unit.

2.Individual receiver/driver non-operative: Check green LED indicator on fuse bracket in receiver/driver box. This signifies that AC power is applied by the keyboard. If not, check shielded-twisted-pair cable between Signal Distribution Unit and receiver/driver box. Confirm camera address setting in receiver/driver corresponds to same camera number as selected by the keyboard. Perform internal receiver/driver local test to verify operation of receiver/driver circuitry and pan/tilt/zoom wiring.

3.AutoDome series dome cameras are not operating in a variable speed fashion: Verify CPU DIP switch 7 is selected for variable speed mode.

22.5No Alarm Response

1.No system alarms operative: Verify power LED indicator on Alarm Interface Unit is lit. If not, check fuses on front of main CPU bay power supply. Verify the Alarm LED indicator lights and the audible buzzer sounds (if enabled) only when an 'alarm' is applied to the unit. If not, replace Alarm Interface unit.

2.Individual cameras/monitors not responding when alarmed: Ensure desired cameras are properly armed on the appropriate armed monitors in the system. Verify alarming device and cable to Alarm Interface unit intact.

3.Incorrect system alarm response: Verify that the desired alarm response mode has been selected. Refer to the section on Select User Functions for instruc- tions.

22.6CPU Software Version Numbers

During the evolution of the system, there have been various CPU software versions released. In certain troubleshooting cases, Factory Technical Support personnel may ask for the version of the CPU. If it becomes necessary to obtain a CPU soft- ware version number, follow the steps below:

CPUs supplied in systems sold after 1995 (having 1, 2, or 3 8-position DIP switches):

1.Using a system keyboard, an operator with a level 1 priority can enter keyboard User Function 23. Press the [User] key. Enter 23 using the numeric keypad, then press the [Enter] key.

2.The CPU version numbers will be displayed on the overlay of the monitor cur- rently being controlled by the keyboard. Record number for future reference.

Very Old or current CPU Versions (having 1 or 2 8-position DIP switches):

1.Remove the front panel of the main CPU bay by loosening the four corner fas- teners.

2.Turn OFF main AC power switch on power supply.

3.The CPU module is located next to the power supply. Pull out CPU module from the card cage until IC's containing white labels are visible. The white labels con- tain copyright information and software version numbers. Record all numbers from label for future reference.

4.Re-install the CPU module and switch ON main AC power.

5.Re-attach front panel.

Bosch Security Systems, Inc. Instruction Manual F.01U.127.393 2.0 2009.03