Siemens RL-854 manual Troubleshooting, Problems and Possible Causes Solutions

Page 35

RL-854 Radio Control Unit

 

Type I, Style A

Troubleshooting

6. Troubleshooting

WARNING: Allow only qualified personnel to perform the following tasks. Observe and follow the safety instructions in this document and all other related documentation.

WARNING: Make sure power to the RL-854 has been disconnected before attempting to service the radio control unit.

Refer to Table 7. This section provides troubleshooting information for the RL-854 Radio Control unit.

Table 7. RL-854 Radio Control Unit Troubleshooting

Problems and Possible Causes

Solutions

Problem: No Timer Lamp

 

Defective lamp

Replace lamp.

Defective motherboard

Repair or replace motherboard.

Bad contacts on decoder board

Clean contacts.

Problem: Timer light is on but relay fails to function

 

properly

 

Defective relay

Swap with spare relay and test; replace if necessary.

Problem: One or more relay(s) remain powered

 

Defective relay

Replace relay.

Defective decoder board

Repair or replace decoder board.

Problem: One or more relay(s) fail to power

 

Defective relay

Replace relay.

Defective relay socket

Replace socket.

Bad contacts on decoder board

Clean contacts.

Defective decoder board

Repair or replace decoder board.

Problem: No carrier lamp

 

Defective lamp

Replace lamp.

Defective antenna

Check antenna and antenna lead.

Defective lamp socket

Replace socket.

Low sensitivity

Increase sensitivity by turning pot2 on receiver board

 

clockwise.

Defective receiver board

Replace or repair receiver board.

Wrong frequency

Check for proper frequency setting on receiver PCB.

Problem: No power lamp

 

No power

Check power source.

Defective lamp

Replace lamp.

Blown fuse

Replace fuse.

Defective motherboard

Repair or replace motherboard.

Problem: No fast time when timer test switch is in FAST

 

position

 

Bad contacts on decoder board

Clean contacts.

Defective decoder board

Repair or replace decoder board.

 

Continued on next page

 2001 Siemens Airfield Solutions, Incorporated

96A0027L

Page 30

All rights reserved

Issued 5/01

 

Page 34 Page 36
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Page 34 Page 36
Contents RL-854 Radio Control Type I, Style a Rev Description EC No Checked Approved Date Record of ChangesTable of Contents List of Figures Warranties Disclaimers RL-854 Radio Control Unit Type I, Style a Safety Safety SymbolsIntended Use Safety Symbols contd Qualified PersonnelOperation InstallationAction in the Event of a System or Component Malfunction Maintenance and RepairIntroduction DescriptionHeater Radio Controller Power Handling CapabilityIntroduction contd Options Receiver Equipment Specification DataMain Assembly CabinetEquipment Specification Data Number Part Description Quantity Description Part NumberIntensity Control Radio Control RestrictionsInterfacing Radio Controller Clicks Intensity Control contdPeriods Microphone Clicks General Theory of OperationMain Assembly contd Interface Panel Interface Panel contd Automatic Radio Control Other L-821 Configurations Installation Unpacking Installing Standard RL-854Contd Tighten jam nuts against the hub to secure the radials Assembling AntennaAssembling Antenna Safety Precautions Installing AntennaMounting Antenna Installing RL-854PR Radio ControllerOperation Incremental Relay Option Installing RL-854PR Radio Controller contdDecoder PCB Controls Controls and IndicatorsStartup Procedures IndicatorsStartup Procedures contd Startup Procedures contd Maintenance Introduction Switch Receiver Frequency SettingProblems and Possible Causes Solutions TroubleshootingDescription Part Number Troubleshooting contdParts Using the Illustrated Parts List RL-854 Radio Control Unit Part Numbering SystemHeater RL-854 Main Assembly Parts ListType RL-854 Motherboard Assembly Parts List RL-854 Main Assembly PartsRL-854 Motherboard Assembly Parts List contd DS1 RL-854 Control Board and Fuse Assembly Parts ListItem No Description Part Number Optional PartsRF Frequency Switch Settings for Frequency Control of Receiver PCBA-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 A-10 A-11 A-12 A-13 A-14 A-15 A-16
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