(a)
Make sure the green CARGO FWD 1, CARGO AFT 1, and CARGO FWD 2 squib test lights on the SQUIB TEST Control Panel come on.
(b)
Make sure the CARGO AFT 2 squib test light stays off.
S 866-174
(9) Release the TEST switch.
(a) Make sure the CARGO FWD 1, CARGO AFT 1 and CARGO FWD 2 squib test lights go off.
S 426-176
(10) Do the Squib Electrical Connection procedure to connect the
electrical connector, D4420, to the AFT squib of bottle 2.
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S 866-177
(11) On the SQUIB TEST Control Panel, P61, push and hold the test switch.
(a) Make sure the green CARGO FWD 1, CARGO FWD 2, and CARGO AFT 1 and CARGO AFT 2 squib test lights on the SQUIB TEST Control Panel come on.
S 866-179
(12) Release the TEST switch.
(a) Make sure the green CARGO FWD 1 and 2, CARGO AFT 1 and 2 squib test lights go off.
S 866-311
(13) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11J2, INSTRUMENTS EICAS CMPTR LEFT
(b)
11J29, INSTRUMENTS EICAS CMPTR RIGHT
TASK 26-23-01-716-178
3. Forward Cargo Heat Stops After the FWD ARMED Switch Activation Check
____________________________________________________________________
A. Access
(1)
Location Zones
121 Forward Cargo Compartment (Left)
122 Forward Cargo Compartment (Right)
211/212 Flight Compartment
(2)
Access Panels
821 Forward Cargo Compartment Door
B. Do a check of the Forward Cargo Heat Stops after FWD ARMED Switch Activation
S 866-212
(1) Make sure that these circuit breakers on the P11 panel are closed:
(a)
11N1, INSTRUMENT AND PANEL AISLE STAND
(b)
11N12 or 11N17, FAN CONTROL FWD CARGO or CARGO HEAT FAN FWD
(c)
11S15, AIR/GND SYS 1
(d)
11S19, AIR/GND SYS 2
S 866-213
(2) Make sure that this circuit breaker on the P70 panel is closed:
(a) 70B8, FWD CARGO FAN
S 866-214
(3) Open these circuit breakers on the P6 panel and attach DO-NOT-CLOSE tags:
(a)
6H5, FIRE EXTINGUISHING CARGO BTL 1
(b)
6H6, FIRE EXTINGUISHING CARGO BTL 2
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(4) S 746-215Make sure the FWD Cargo Fire ARMED switchlight is OFF on the aft pilot's control stand, P8.
(5) S 886-216If the temperature in the Forward Cargo Compartment is above 50°F, do one of the following steps to decrease the temperature control switch to 50°F maximum by:
NOTE:____ The Temperature Control Switch can be found below the Forward Cargo Heating Intake Duct.
(a) (b) Use an ice pack to cool the Temperature control Switch.Insert a jumper between pins 1 and 2 of the electrical connector D2252 on the Temperature Control Switch.
(6) S 716-217Take your hand and feel the air intake at the inlet (STA 844, WL177, LBL 40) to make sure that the FWD Cargo Compartment heating fan starts.
(7) S 866-218Push the FWD Cargo Fire switch on the APU/CARGO Fire Control panel, P8. (a) Make sure the FWD ARMED switchlight is ON. (b) Make sure the EICAS message, FWD CARGO FAN, shows on the lower display. (c) Make sure the FWD Cargo compartment heating fan stops.
(8) S 866-219Push the FWD Cargo Fire switch and release. (a) Make sure the FWD ARMED switchlight is OFF. (b) Make sure the FWD Cargo Compartment heating fan starts.
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