TM 55-1520-240-T9-16.3 TROOP WARNING SYSTEM OPERATIONAL CHECK (Continued)9-16.3TASKRESULTTASKRESULT1.2.3.3.1.4.4.1.5.6.7.8.9.10.Check that TROOP ALARM BELL circuitbreaker (1) is closed.Check that TROOP ALARM JUMP LT cir-cuit breaker (2) is closed.Without , check that red dome lights incabin and ramp area are not on. If reddome lights are on, momentarily set the CAB &RAMP LTS switch (3) to ALL/OFF.With , check that red dome lights in cab-in and ramp area are not on. If red domelights are on, set CABIN AND RAMPLIGHTS CONTROL switch (3.1) to OFF.Without , check that lights in mastercaution panel (4) are bright. If not, setmaster caution DIM/BRIGHT switch toBRIGHT.With , set PLT INST lights control (4.1)to OFF.Press and release RED TROOP JUMP LTSlight (6),Press and release GREEN TROOP JUMPLTS light (7).Set TROOP JUMP LTS switch (8) to RED.Without , momentarily set CAB & RAMPLTS switch (3) to RED ON. With , setCABIN AND RAMP LIGHTS CONTROLswitch (3.1) to RED.Without , momentarily set CAB & RAMPLTS switch (3) to ALL OFF. With,setCABIN AND RAMP LIGHTS CONTROLswitch (3.1) to OFF.Without , momentarily set CAUTIONLIGHTS BRIGHT-DIM switch (5) to DIM.If circuit breaker is open, close it. If it opens again,go to task 9-16.4.If circuit breaker is open, close it. If it opens again,go to task 9-16.5.If red lights remain on, go to task 9-15.3.If lights do not come on bright, go to task 9-18.3Light (6) shall momentarily come on red. If not, go totask 9-16.6.Light (7) shall momentarily come on green. If not, goto task 9-16.7.Red lights on forward and aft troop warning boxes(9 and 10) and red TROOP JUMP LTS light (6) shallcome on bright. If not, go to task 9-16.8. With ,if red lights come on dim, replace PLT INST lightscontrol (4.1).Red lights on forward and aft troop warning boxes(9 and 10) shall change from bright to dim. If not, goto task 9-16.9.Red lights on forward and aft troop warning boxes(9 and 10) shall change from dim to bright. If not,replace jump light relay.Red TROOP JUMP LTS light (6) shall change frombright to dim, If not, go to task 9-16.10.10.1.11.11.1.12.13.14.15.16.17.18.19.With , set PLT INST lights control (4.1)to D I M .Without , momentarily set CAUTIONLIGHTS BRIGHT-DIM switch (5) toBRIGHT.With , set PLT INST lights control (4.1)to OFF.Set TROOP JUMP LTS switch (8) toGREEN.Without , momentarily set CAB & RAMPLTS switch (3) to RED ON. With , s etCABIN AND RAMP LIGHTS CONTROLswitch (3.1) to RED.Without , momentarily set CAB & RAMPLTS switch (3) to ALL OFF. With, s etCABIN AND RAMP LIGHTS CONTROLswitch (3.1) to OFF.Without , momentarily set CAUTIONLIGHTS BRIGHT-DIM switch (4) to DIM.With , set PLT INST lights control (4.1)to D I M .Without , momentarily set CAUTIONLIGHTS BRIGHT-DIM switch (4) t oBRIGHT. With, set PLT INST lightscontrol (4.1) to OFF.Set TROOP JUMP LTS switch (8) to OFF.Set TROOP ALARM switch (11) to O N .Set TROOP ALARM switch (11) to OFF.Red TROOP JUMP LTS light (6) shall change frombright to dim. If not, go to task 9-16.15.Red TROOP JUMP LTS light (6) shall change fromdim to bright. If not, replace troop light dimming re-lay.Red TROOP JUMP LTS light (6) shall change fromdim to bright. If not, replace troop light dimming re-l a y .Red lights on forward and aft troop warning boxes(9 and 10) shall go out and green lights shall comeon bright. Green TROOP JUMP LTS light (7) shallcome on bright. If red lights are still on and greenlights are out, go to task 9-16.11.Green lights on forward and aft troop warning boxes(9 and 10) shall change from bright to dim, If not, goto task 9-16.12.Green lights on forward and aft troop warning boxes(9 and 10) shall change from dim to bright. If not,replace jump light relay.Green TROOP JUMP LTS light (7) shall change frombright to dim. If not, go to task 9-16.13.Green TROOP JUMP LTS light (7) shall change fromdim to bright. If not, replace troop light dimming re-lay.Green lights on both troop warning boxes (9 and 10)and green TROOP JUMP LTS light (7) shall go out. Ifnot, replace TROOP JUMP LTS switch (8).Alarm bells on the forward and aft troop warningboxes (9 and 10) shall sound. If not, go to task 9-16.14.Both alarm bells shall stop.FOLLOW-ON MAINTENANCE:TM 55-1520-240-23:Battery disconnected.Electrical power off.Hydraulic power off.END OF TASKChange 69-283
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