I have been flying the 747 since 1984 and certainly on the classic we had a drill to partially open the main deck doors for smoke removal once depressurised - doors 4 if i remember correctly. The door handle was then held in place by tying rope around it. I now fly the 744F and cannot remember if the pax version had the same drill as the classic but I believe it did. I remember practicing the procedure one year in the cabin trainer. Of course the -F doesn't have a door 4 so it is irrelevant.
As the following QRH drill shows a door open light is a non event if the pressurisation is operating correctly.
Condition: Main deck entry door not closed and latched
condition sensed.
PRESSURIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CHECK
Check pressurization system for normal operation. If
pressurization system indicates normal operation,
continue normal flight.
DOOR ENTRY L 1, 5
The smoke removal procedure (below - for 744F) is a lot more complicated and requires an immediate landing if the smoke persists. Having read a statistic that no aircraft has survived more than 15 minutes with a genuine fire on board, the drill is somewhat hypothetical as with wait times to see if the smoke dissipates it would doubtless take a lot longer than 15 minutes!
SMOKE/FUMES/FIRE ELECTRICAL
Condition: Electrical smoke/fumes/fire identified.
OXYGEN MASKS (If required). . . . . . . . . . . . . . . . . . . . . . . .ON
CREW COMMUNICATIONS (If required). . . . . . . . ESTABLISH
FLIGHT DECK FAN SWITCH. . . . . . . . . . . . . . . . . . . . . . . .OFF
[Removes flight deck fan as a possible source of smoke/fumes.]
If smoke/fumes/fire source known:
ELECTRICAL POWER (Affected equipment) . . . .REMOVE
If practical, remove power from affected equipment by
switch or circuit breaker in flight deck or upper deck.
If smoke/fumes/fire persists or source unknown:
UPPER DECK READING LIGHTS. . . . . . . . . . . . . . . . . . .ON
Instruct supernumeraries to turn on upper deck
reading lights.
[Prepares upper deck reading lights before removing power from utility
busses. Removing power from utility busses results in loss of upper
deck lighting except for passenger signs and reading lights.]
PASSENGER SIGNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON
[Prepares cabin lighting before removing power from utility busses.]
UTILITY POWER SWITCHES (Both). . . . . . . . . . . . . . . .OFF
[Removes electrical power from possible sources of smoke/fumes.
Removes equipment cooling supply fan as a possible source of
smoke/fumes.]
If smoke/fumes/fire persists or source unknown: (continued)
If center wing tank pump switches ON:
LEFT CENTER WING TANK PUMP SWITCH. . . . . . .OFF
Do not turn the Left Center Wing Tank Pump switch
ON if the FUEL OVD CTR L message displays.
[Override pumps 2 and 3, commanded on by center wing tank pump
failure, return to armed after approximately five minutes.]
MAIN PUMP 1 AND 4 SWITCHES . . . . . . . . . . . . . . .OFF
When the FUEL LOW CTR R message displayed:
MAIN PUMP 1 AND 4 SWITCHES . . . . . . . . . . . . . .ON
RIGHT CENTER WING TANK
PUMP SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
If the FUEL OVD CTR R message displays in cruise:
RIGHT CENTER WING TANK
PUMP SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . .ON
MAIN PUMP 1 AND 4 SWITCHES. . . . . . . . . . .OFF
When the FUEL LOW CTR R message displayed:
MAIN PUMP 1 AND 4 SWITCHES. . . . . . . . . .ON
RIGHT CENTER WING TANK
PUMP SWITCH . . . . . . . . . . . . . . . . . . . . . . .OFF
Resume normal fuel management.
Do not accomplish the following checklists:
ELEC UTIL BUS L, R
FUEL OVRD 2, 3 FWD
FUEL PRESS CTR L
FUEL PUMP 2, 3 FWD
Plan to land at the nearest suitable airport.