Need Fluke 177 True RMS multimeter service manual

Hello all
My fluke 177 dead before two days. When it dwitch on, nothing in the display. I just try to trace all track and components.... and get an analog section circuit.
I find out that there is one voltage, -2.5 volt is missing...
I need some more details about the circuit diagram and components.
So please help me to fix the problem and back to life to my multimeter....

Thank you so much and have a nice day....
Manoj Soorya

By today 80 people have look at you question and no one has a repair manual.
I don't think you are going to find one.
This is all I can find:
https://assets.fluke.com/manuals/175_____umeng0000.pdf
and it will not help.

I have some more informations with photos.....I am using mobile this time...I will upload the details later....

Trying to get some more extra details.....


Thank you.....