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 S 755-139
 (4)  ON GUN 004-999 AND AIRPLANES WITH SL 26-9A; after 60 to 90 seconds, make sure these indications occur: (a) The EICAS maintenance message AFT DET FAN shows on the bottom display. This is an indication that the plenum pressure switch and control relay have operated. (b) The EICAS status message CARGO DET AIR does not show on the bottom display. This is an indication that the aft blower 4 (M10465) operates.
 S 865-142
 (5)  Open this circuit breaker on the P70 panel to stop the operation of blower 4 (M10465): (a) 70B13, SMOKE DET BLOWER 4
 S 755-143
 (6)  Make sure the EICAS messages CARGO DET AIR and AFT DET FAN show on the bottom display.
 S 865-160
 (7)  Close these circuit breakers on the P70 panel: (a) 70B12, SMOKE DET BLOWER 3 (b) 70B13, SMOKE DET BLOWER 4
 S 865-144
 (8)  Open for 1 second, and then close these circuit breakers on the P11 panel, to set the system: (a) 11S35, FIRE DET CARGO CONT or CARGO SMOKE BLOWER CONT
 S 755-146
 (9)  Make sure that within 90 seconds, the EICAS message AFT DET FAN or CARGO DET AIR does not show on the bottom display. This is an indication that aft blower 3 (M10464) operates.

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A

757 MAINTENANCE MANUAL
 G. Smoke Test
 S 015-217
 (1)  Open forward and aft cargo doors (AMM 52-34-00/201).
 S 725-152
 WARNING: DO NOT BREATHE THE SMOKE.  IF YOU USE THE
_______USE EYE PROTECTION. VENTILATION SMOKE TUBE, DO NOT LET THE SMOKE TOUCH YOUR SKIN. TOO MUCH SMOKE FROM THE SMOKE TUBE CAN CAUSE CORROSION TO THE MATERIALS IN THE SMOKE DETECTION SYSTEM. IF THERE IS NOT SUFFICIENT AIR MOVEMENT IN THE AREA OR YOU GET RESPIRATORY PROBLEMS, USE AN APPLICABLE RESPIRATOR. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (2)  Do the Smoke test as follows:
 (a)  
Make smoke adjacent to each of the four orifices in the forward cargo compartment, one at time.

 (b)  
For each orifice, make sure a fire indication occurs: 1) The red FWD CARGO FIRE switchlight, on the APU/CARGO fire control panel, (on P8), comes on. 2) The red FIRE light, on the captains instrument panel, P1-3,

 comes on.
 3) The EICAS message FWD CARGO FIRE shows on the top display.
 4) The red master warning lights, on the glareshield panel,
 P7, come on.
 5) The fire bell is heard.

 (c)  
Remove the smoke source.

 (d)  
Make sure that the above fire indications go off when there is no smoke.

 (e)  
Do the smoke test again for the 5 orifices in the aft cargo compartment. The AFT light in the AFT CARGO FIRE switchlight will come on and the EICAS message AFT CARGO FIRE shows on the top display.

 S 025-218
 (3)  
Close forward and aft cargo doors (AMM 52-34-00/201).

 (4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-099
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A
757 MAINTENANCE MANUAL
 LOWER CARGO COMPARTMENT SMOKE DETECTION SYSTEM - CLEANING/PAINTING
__________________________________________________________________
 1.  General_______
 A.  This section contains these procedures to clean the smoke detection system in the cargo compartment:
 (1)  
Cargo Smoke Detector

 (2)  
Cargo Compartment Smoke Detector Tubes

 TASK 26-16-00-107-001
 2.  Clean the Cargo Smoke Detector (Fig. 701)______________________________
 A.  References
 (1)  
AMM 26-16-01/201, Cargo Smoke Detectors - Maintenance Practices

 (2)  
AMM 52-34-00/201, No. 1 and No. 2 Cargo Doors

 (3)  
AIPC 26-16-58 Fig. 1

 (4)  
　
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