3M 478DA (D-15) Owner's Manual
Contents
1. microphone Defective menu sign speaker Printed on 50 recycled paper including 10 post consumer waste Printed in U S A 3M 1997 January 78 6912 0660 7 Rev A Troubleshooting Guide Model 481 BA D 20 6 Channel Intercom System Introduction The Model 481 is a 6 channel intercom system that is typically used to provide communication between store counters and pump islands in self service gas stations convenience stores and truck stops SP 206A Problem Isolation Procedure Use the troubleshooting table on the following pages to help isolate the problem 1 2 3 4 5 Start at the top of the table and work down to the bottom For each symptom listed determine if it applies to the situation If a symptom does apply check v the box adjacent to the symptom Read across the table to the possible causes and corrections listed in the middle and right columns Investigate these possible causes and implement the corrections Possible causes are listed in the order in which they are most likely to occur If none of the possible causes and corrections applies to the situation call 3M Media InTouch and review the checked symptoms with the technical support staff Technician Troubleshooting Guide Model 481BA D 20 SP 205A Figure 1 Operating Controls Power Switch Provides power to mainstation Power Indicator Light Indicates power is on and the system is ready to operate Volume Control Adju2. Detect to Main signal too low Adjust R6 to increase signal level Defective analog board Check and replace analog board Defective logic or analog board Check and replace logic or analog board Check and replace analog board Replace microphone Replace menu sign speaker Defective analog board Defective internal microphone Defective menu sign speaker Printed on 50 recycled paper including 10 post consumer waste Printed in U S A 3M 1997 January 78 6912 0637 5 Rev A
3. Troubleshooting Guide Model 478DA D 15 Single Intercom System Introduction The Model 478DA is a single channel intercom system that is used for point to point communication applications The system includes a visible audible presence alert and the capability of multiple units communicating with the same loudspeaker SP 211A Problem Isolation Procedure Use the troubleshooting table on the following pages to help isolate the problem 1 Start at the top of the table and work down to the bottom 2 For each symptom listed determine if it applies to the situation 3 Ifa symptom does apply check v the box adjacent to the symptom 4 Read across the table to the possible causes and corrections listed in the middle and right columns 5 Investigate these possible causes and implement the corrections Possible causes are listed in the order in which they are most likely to occur If none of the possible causes and corrections applies to the situation call 3M Media InTouch and review the checked symptoms with the technical support staff Technician Troubleshooting Guide Model 478 D 15 SP 212A Figure 1 Operating Controls 1 Controls application of power to the system Power Indicator Light Indicates power is applied to the system Volume Controt Adjusts the internal speaker listen audio level Standby Touch Switch Silences intercom audio to eliminate pickup of undesired background noise and reconnects optiona
4. ce analog board speaker mic or analog board No outbound audio Defective logic board or Check and replace logic touch pad board or touch pad Power Indicator Light green is ON TALK Indicator Light red is OFF when TALK SWITCH is pressed No outbound audio Defective speaker mic or Check and replace analog board speaker mic or analog board Power Indicator Light green is ON TALK Indicator Light red is ON when TALK SWITCH is pressed The VEHICLE Indicator Alert volume too low Check and adjust alert Light yellow blinks but volume control on analog vehicle detection tone does board not sound Defective analog or logic Check and replace analog or board logic board Continued Technician Troubleshooting Guide Model 481BA D 20 The VEHICLE Indicator Defective call switch Check and replace call Light yellow is OFF and the switch Defective analog or logic Check and replace analog or board logic board Unit will not return to standby Defective logic board Check and replace logic mode when STANDBY board vehicle detection tone does not sound Switch is pressed Unit will not come out of Defective logic board Check and replace logic standby mode board Outbound audio distorted Defective analog board Check and replace analog board Defective internal Replace microphone microphone Defective outside speaker Replace speaker Printed in U S A 3M Media InT
5. iring speaker menu mic or wiring e Power Indicator Light green is ON e LISTEN Indicator Light green is ON Defective analog board Check and replace analog board Inbound audio distorted Defective menu speaker Check and replace menu menu mic or wiring speaker menu mic or wiring Defective analog board Check and replace analog board No outbound audio Power No AC power to the unit Check power supply Indicator Light green is transformer or wall outlet OFF Defective analog board Check and replace analog board No outbound audio Defective logic board or Check and replace logic e Power Indicator Light touch pad board or touch pad green is ON e TALK Indicator Light red is OFF when TALK SWITCH is pressed continued Technician Troubleshooting Guide Model 479 D 30 No outbound audio Power Indicator Light green is ON TALK Indicator Light red is ON when TALK SWITCH is pressed With car on loop VEHICLE Indicator Light yellow is ON but vehicle detection tone does not sound With car on loop VEHICLE Indicator Light yellow is OFF and vehicle detection tone does not sound Outbound audio distorted Food Services Trade Department 3M Center Building 551 1E 02 St Paul MN 55144 1000 Defective menu speaker menu mic or wiring Check and replace menu speaker menu mic or wiring Defective analog board Check and replace analog board Vehicle
6. l music message source to the external speaker when unit is not in use The system automatically exits the standby mode with vehicle detection or when the Touch Talk switch is pressed Touch Talk Switch Controls talk listen communications Operator touches switch to talk and cancel alert tone Operator releases switch to listen Indicator Lights Red indicates TALK mode Green indicates LISTEN mode Yellow indicates vehicle presence Yellow light above STANDBY lights and all other lights are extinguished when the system is placed in the standby mode Model 478 D 15 Technician Troubleshooting Guide Troubleshooting Table No inbound audio Power No AC power to the unit Check power supply Indicator Light green is transformer or wall outlet OFF Defective analog board Check and replace analog board No inbound audio Defective logic board or Check and replace logic e Power Indicator Light touch pad board or touch pad green is ON e LISTEN Indicator Light green is OFF No inbound audio Defective menu speaker Check and replace menu menu mic or wiring speaker menu mic or wiring e Power Indicator Light green is ON e LISTEN Indicator Light green is ON Defective analog board Check and replace analog board Inbound audio distorted Defective menu speaker Check and replace menu menu mic or wiring speaker menu mic or wiring Defective analog board Check and replace analog board No
7. ouch 3M 1997 January 3M Center Building 551 1E 02 Printed on 50 recycled paper 78 6912 0634 2 Rev A St Paul MN 55144 1000 including 10 post consumer waste 3M Troubleshooting Guide Introduction The Model 479 is a 2 channel intercom system that is typically used to provide communication between store counters and pump islands in self service gas stations convenience stores and truck stops Problem Isolation Procedure Use the troubleshooting table on the following pages to help isolate the problem 1 2 3 4 5 Start at the top of the table and work down to the bottom For each symptom listed determine if it applies to the situation If a symptom does apply check v the box adjacent to the symptom Read across the table to the possible causes and corrections listed in the middle and right columns Investigate these possible causes and implement the corrections Possible causes are listed in the order in which they are most likely to occur If none of the possible causes and corrections applies to the situation call 3M Media InTouch and review the checked symptoms with the technical support staff Technician Troubleshooting Guide Model 479 D 30 SP 208A Figure 1 Operating Controls Function 1 Controls application of power to the system Power Indicator Light Indicates power is applied to the system Volume Control Adjusts the mainstation internal speaker listen audio level Talk Swi
8. outbound audio Power No AC power to the unit Check power supply Indicator Light green is transformer or wall outlet OFF Defective analog board Check and replace analog board No outbound audio Defective logic board or Check and replace logic e Power Indicator Light touch pad board or touch pad green is ON e TALK Indicator Light red is OFF when TALK SWITCH is pressed continued Technician Troubleshooting Guide Model 478 D 15 No outbound audio Power Indicator Light green is ON TALK Indicator Light red is ON when TALK SWITCH is pressed With car on loop VEHICLE Indicator Light yellow is ON but vehicle detection tone does not sound With car on loop VEHICLE Indicator Light yellow is OFF and vehicle detection tone does not sound Outbound audio distorted 3M Media InTouch 3M Center Building 551 1E 02 St Paul MN 55144 1000 Defective menu speaker menu mic or wiring Check and replace menu speaker menu mic or wiring Defective analog board Check and replace analog board Alert volume control setting too low Check and or increase the Alert volume control setting on bottom of unit Defective analog board Check and replace analog board Defective logic or analog board Check and replace logic or analog board Check and replace analog board Replace microphone Replace menu sign speaker Defective analog board Defective internal
9. sts INCOMING audio level NOTE Volume level adjustments for alert tone and outside speakers are set by the installer Channel Selector Switches 1 6 These switches control talk listen communication for numbered channels Operator touches switch to talk and releases switch to listen Indicator Lights Red indicates TALK mode Green indicates LISTEN mode Yellow steady indicates channel on HOLD Yellow flashing indicates incoming call WAITING Hold Switch Places selected channel in HOLD mode All Call Switch Controls conversation with all channels simultaneously Standby Switch Silences incoming audio to eliminate undesired background noise pickup when unit is not in use Touching any CHANNEL SELECTOR SWITCH releases STANDBY mode Standby Indicator Light Indicates unit is in STANDBY mode Model 481BA D 20 Technician Troubleshooting Guide Troubleshooting Table No inbound audio Power No AC power to the unit Check power supply Indicator Light green is transformer or wall outlet No inbound audio Defective logic board or Check and replace logic R touch pad board or touch pad Power Indicator Light green is ON LISTEN Indicator Light green is OFF No inbound audio Defective speaker mic or Check and replace speaker or analog board analog board Power Indicator Light green is ON LISTEN Indicator Light green is ON Inbound audio distorted Defective speaker mic or Check and repla
10. tches A amp B Control talk listen communication for the respective channel A or B Operator touches switch to talk and releases switch to listen Standby Switch Silences audio to eliminate pickup of undesired background noise when unit is not in use Touching either the Channel A or Channel B Talk Switch releases STANDBY mode Vehicle Detection automatically places the system into the Channel A listen mode Indicator Lights same for Channel A and Red indicates TALK mode Channel B Green indicates LISTEN mode Yellow indicates vehicle presence when used with 3M SODAR or magnetic loop detection system All indicator lights are extinguished when mainstation is in the standby mode Standby Mode Switch AUTO automatic position causes system to switch from Channel A Listen to Standby when there is no vehicle detect signal MAN manual position allows operator to use Channel A without vehicle detection Model 479 D 30 Technician Troubleshooting Guide Troubleshooting Table No inbound audio Power No AC power to the unit Check power supply Indicator Light green is transformer or wall outlet OFF Defective analog board Check and replace analog board No inbound audio Defective logic board or Check and replace logic e Power Indicator Light touch pad board or touch pad green is ON e LISTEN Indicator Light green is OFF No inbound audio Defective menu speaker Check and replace menu menu mic or w
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