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Hi ,
Different posts seem to have different ideas on Lighting/Dimming control in a 737ng cockpit.
I need to know how the controls work on a real 737ng.
What controls/dims the Panel (Text) Backlighting on MIP , MCP , THROTTLE , CDU'S , PEDESTAL and OVERHEAD ?
What controls/dims the strip light above the MCP ?
What controls/dims the light under the MCP ?
What controls/dims the lights under the Glarewings ?
Best Regards
Steve
Captains and Centre MIP plus MCP backlighting (text) - dimmer switch on Captains lower sub panel labelled MAIN PANEL (below his PFD, on the same panel as the DU dimmers).
FO's MIP backlighting - dimmer switch on FO's lower sub panel labelled MAIN PANEL (below his PFD, located with DU dimmers).
TQ, CDU's & Pedestal backlighting - dimmer switch at the rear of the pedestal labelled PANEL. The dimmer next to this labelled FLOOD controls a floodlight in the overhead panel that shines onto the TQ.
Overhead backlighting - dimmer switch in centre of the forward overhead panel dims both the FWD & AFT overhead backlighting. The dimmer next to this labelled CIRCUIT BREAKER controls floodlights directed towards the CB panels. As far as I know, the CB panels are not backlit.
Strip light above MCP - dimmer on the Captains lower sub panel labelled AFDS FLOOD
Light under MCP and Glarewings - dimmer on the Captains lower sub panel labelled BACKGROUND
Sean
Captains lower sub panels
http://www.cpflight.com/images/cp_subpanel_front.jpg
FO's lower sub panels
http://www.cpflight.com/images/fo_subpanel_front.jpg
Centre pedestal
http://www.cpflight.com/images/brt737_2.jpg
Sean ,
Great .. that's clear...........
Now I can start to wire it.
Thanks again , Steve
Hi Sean,
at this time I am also working on a dimmer project for a 737NG simulator.
The text in the FCOM sounds like that BACKGROUND controls the backlight of all MIP panels and both MAIN PANEL knobs control the flood light on the MIP.
I found some homecockpit videos and some of the PMDG NGX where you can see the controls work like you described. But I found no video of a real 737NG. May I ask you for the source of your information?
Best regards,
Christoph
Hi Christoph
From the FCOM. I agree that the text in the FCOM is not that clear, but this is how I interpret it.
The BACKGROUND control is for the incandescent lights located under the MCP and in each glare wing, as this shot shows...
Attachment 6337
The MAIN PANEL control is for the MIP backlighting, just like the centre pedestal PANEL control is for it's backlighting and the overhead PANEL control is for it's backlighting.
I think the clues are in the words I've highlighted. I could of course be wrong, and I stand to be corrected should the case be otherwise.
Good luck with your project!
Regards
Sean
Hi Sean,
I found some very good picture on airliners.net that show that you are right!
On one picture you can see the BACKGROUND and FO MAIN PANEL knob in the OFF position but the CPT MAIN PANEL knob in the full right position. The only thing that is active is the CPT and center backlight.
Thank you!
Best regards,
Christoph
Can you please post a link to that photograph?
Sean
Good pic, nice find, thanks.
Also note that the FO's EFIS unit must also be controlled by his own PANEL control, but the Captains controls the MCP.
Sean
Hi,
I thought these might be of interest, being straight from the horses mouth, so to speak :D
Overhead dome:
Attachment 6346
Overhead panel:
Attachment 6347
Pedestal flood :
Attachment 6348
pedestal panel:
Attachment 6349
Main panel:
Attachment 6350
Ah, that's from the CBT! I have it, too, but it couldn't find that part. Where can I find this chapter?
Main panel FO:
Attachment 6351
Captain background :
Attachment 6352
AFDS Flood :
Attachment 6353
Map lights :
Attachment 6354
chart lights :
Attachment 6355
And this concludes our little tour of the cockpit lighting system.
Martin
Sssht, Boeing might not approve. It's from the Internal lighting section.