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TROUBLESHOOTING 

 

 

Testing the 
system with 
all connected. 

Use a volt/ohm meter set to DC Voltage. Measure from ground to each color wire, 
of  the 

MCU

  (Master  Controller)  going  out  to  the  light.  The  voltage  should  read 

between  8  to  10  Volts  DC,  when  the  point  pad  is  activated.  If,  for  example,  you 
want to check the elevation, measure on the RED and WHITE when the Point pad 
is pressed 

to „down‟. There should be 8-10 V on one of these wires. 

 

 

Motion is OK, 
but no light 

Disconnect the 

YELLOW

 and 

GREEN

 wires (in the 6-wire wiring harness leading 

out of the Master Controller) and connect the 12V battery test wires to the 

yellow

 

and 

green

 wires 

LEADING TO THE LIGHT

. If the lamps do not light up, check the 

continuity  of  the  yellow  and  green  wires  and  any  splices  or  terminal  connections 
through the harness to the searchlight. If the continuity tests OK, the bulbs must be 
checked. Do the following: 

Please do not try to test the bulbs with a tester/ohm meter as you would a normal 
incandescent house bulb. Remove (without touching the bulb with your hand)  the 
bulb  from  the  socket  and  connect  the  leads  to  a  6V  battery  to  test  them.  If  the 
bulbs test good, check for corrosion on the brush assembly mounted at the bottom 
of the housing, or on the slip ring assembly mounted in the base. 

If there is corrosion on either the brush or  slip ring assemblies,  gently clean it off 
with a 

fine

 wire brush or sanding paper and wipe clean with rubbing alcohol. If the 

slip ring assembly is pitted, it will need to be replaced.  

If  the  brush  and  slip  ring  are  OK,  and  the  lamps  light  up  when  connected  to  the 
battery, the 

MCU

 (Master control unit) needs to be replaced.  

 

No up and 
down, 
everything 
else is OK 

Disconnect the 

RED

 and 

WHITE

 wires (in the 6-wire wiring harness leading out of 

the Master Controller) and connect the 12V battery test wires to the 

red

 and 

white

 

wires 

LEADING TO THE LIGHT

. The light should move either up or down. If you 

change  the  POLARITY  it  should  move  the  other  way.  If  this  happens  without  a 
problem, the 

MCU

 (Master control unit) is faulty and needs to be replaced. If not, 

do the following: 

Summary of Contents for RCL 100

Page 1: ...Page 1 RCL 100 Troubleshooting Breakdown List ...

Page 2: ...ded 3 Wiring guide 3 Pointpad Master controller compatibility 5 12V 24V 5 Searchlight and Wiring Diagram 6 Breakdown procedure 7 8 Slip ring and Planet gear assembly 9 Rotation motor assembly 10 Troubleshooting the light 12 14 Parts List 15 ...

Page 3: ... Rags 2 Phillips Screwdriver Length of wires 2 with crocodile clips on each end to connect to battery 12V Battery or Power Supply 3 5Amp capability Wiring Guide YELLOW Lamp power GREEN Lamp power RED Elevation motor WHITE Elevation motor BLACK Rotation motor BROWN Rotation motor ...

Page 4: ...t Black Spot Right Other RCL 100 Point Pads 75 ohm TV Coaxial Cable 75 ohm TV Coaxial Cable T Connector or Optional 75 Ohm Splitter for Multiple RCL 100 Point Pads Ground Blue Orange Note Wiring must be in accordance with this diagram Improper wiring will damage components 12 VDC or 24 VDC Master Controller in line 15 amp fuse Power Source Fuse ...

Page 5: ...r and will function properly if the individual modules are in working condition URP 100 URC 100 101 yes URP 101 URC 100 101 yes URP 102 URC 101 yes URC 102 URP 101 yes URP 100 URC 102 no URP 102 URC 100 no 12V 24V Lights The difference between a 12V light and a 24V light is ONLY the rating of the bulb If one wants to convert the light from one voltage to another the bulbs need to be replaced 12V P...

Page 6: ...Page 6 ...

Page 7: ...collar and carefully lift the head off the base To remove the complete Front Frame assembly from the head of the light remove the front frame and glass assembly Loosen the two lock nuts from the hex studs and turn out the two studs sufficiently to slide the assembly out ...

Page 8: ...Page 8 Pull the Front Frame assembly out of the searchlight Complete Reflector elevation motor assembly ...

Page 9: ...ntacts mounted in the head of the light RED WHITE UP AND DOWN GREEN YELLOW RIGHT AND LEFT View of the two plastic gears driven by the Rotation motor and the contact assembly that transfer the voltage from the slip ring to the bulbs and elevation motor 3 RED 1 WHITE 2 GREEN 4 YELLOW Planet Gear Contact assembly ...

Page 10: ...Page 10 Rotation motor It is actually an assembly that consists of a motor and a gearbox with spindle gear GEARBOX MOTOR ...

Page 11: ...hm meter as you would a normal incandescent house bulb Remove without touching the bulb with your hand the bulb from the socket and connect the leads to a 6V battery to test them If the bulbs test good check for corrosion on the brush assembly mounted at the bottom of the housing or on the slip ring assembly mounted in the base If there is corrosion on either the brush or slip ring assemblies gent...

Page 12: ...ght If you change the POLARITY it should move the other way If this happens without a problem the MCU Master control unit is faulty and needs to be replaced If not do the following Remove the four screws underneath the head of the light to loosen the protection cover Gently lift the head from the base in order to view the two plastic gears by turning the head upside down to see them If they are in...

Page 13: ...r reading then the coax cable is ok and it is recommended that the point pad and MCU be sent in for testing and possible replacement Extending the coaxial cable Please be sure to use RG 59 coaxial cable if there is a need to extend the coax between the Point pad and the Master Controller or if the existing cable is damaged and needs to be replaced Maximum cable length between the Master controller...

Page 14: ...ight to Technical Service ACR Electronics Inc 5757 Ravenswood road Fort Lauderdale Fl 33312 Please add a memo with what needs to be done refurbishment sender company name full return address and contact number of a person that can OK a quote on the complete refurbishment of the light ...

Page 15: ...P RING HRMK 2100 HOUSING HRMK 2101 FRONT FRAME HRMK 2102 PROTECTION COVER HRMK 2103 U TYPE BASE HRMK 2200 FRONT FRAME GASKET HRMK 2202 O RING SMALL HRMK 2203 O RING LARGE HRMK 2300 BRUSH ASSEMBLY HRMK 2500 REFLECTOR HOLDER HRMK 2501 SOCKET HOLDER HRMK 4100 FRONT FRAME ASSEMBLY HRMK 4200 ELEVATION MOTOR HRMK 4300 ROTATION MOTOR 9283 3 COMPLETE MASTER CONTROLLER POINT PAD AND COAXIAL CABLE SET 1927 ...

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