The following are the Dip Switch settings based off of MAME 0.180 source code.
 
Use this information at your own risk!  The information was parsed from the MAME source code and could contain errors as to the state, order or descriptions of what the switches do.  If you find an error, please let me know on the Contact Us form and I will work on correcting the issue. 
 
 
 
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Manufactured by Midway, Released in 1993
ROM Version: Mortal Kombat II (rev L1.1)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        ViolenceOff
        Comic Book OfferOff
        BloodOff
        Low BlowsOff
        Attract SoundOff
        Powerup TestOff*
        ViolenceOn*
        BloodOn*
        Powerup TestOn
        Low BlowsOn*
        Comic Book OfferOn*
        Attract SoundOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L1.4)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        Low BlowsOff
        Comic Book OfferOff
        Powerup TestOff*
        Attract SoundOff
        BloodOff
        ViolenceOff
        Low BlowsOn*
        Comic Book OfferOn*
        Attract SoundOn*
        Powerup TestOn
        ViolenceOn*
        BloodOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L2.0)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        ViolenceOff
        Attract SoundOff
        Comic Book OfferOff
        Powerup TestOff*
        BloodOff
        Low BlowsOff
        Attract SoundOn*
        ViolenceOn*
        Comic Book OfferOn*
        Low BlowsOn*
        Powerup TestOn
        BloodOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L2.1)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        Attract SoundOff
        ViolenceOff
        Powerup TestOff*
        Low BlowsOff
        BloodOff
        Comic Book OfferOff
        On*
        Attract SoundOn*
        Low BlowsOn*
        Powerup TestOn
        ViolenceOn*
        BloodOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L3.0)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        BloodOff
        Powerup TestOff*
        ViolenceOff
        Low BlowsOff
        Attract SoundOff
        Comic Book OfferOff
        Low BlowsOn*
        Attract SoundOn*
        Comic Book OfferOn*
        BloodOn*
        ViolenceOn*
        Powerup TestOn
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L3.1 (European))
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        Powerup TestOff*
        Low BlowsOff
        BloodOff
        Attract SoundOff
        Comic Book OfferOff
        ViolenceOff
        Powerup TestOn
        ViolenceOn*
        Comic Book OfferOn*
        Low BlowsOn*
        BloodOn*
        Attract SoundOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L3.1)
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        ViolenceOff
        BloodOff
        Low BlowsOff
        Powerup TestOff*
        Comic Book OfferOff
        Attract SoundOff
        Comic Book OfferOn*
        Powerup TestOn
        ViolenceOn*
        Low BlowsOn*
        BloodOn*
        Attract SoundOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
ROM Version: Mortal Kombat II (rev L3.2 (European))
Print
Dip Switch:DSW
12345678FunctionOption
        Circuit Boards1*
        2
        Bill ValidatorInstalled
        Not Present*
        BloodOff
        Low BlowsOff
        Powerup TestOff*
        Comic Book OfferOff
        Attract SoundOff
        ViolenceOff
        On*
        BloodOn*
        Low BlowsOn*
        Powerup TestOn
        Attract SoundOn*
        Comic Book OfferOn*
Off       Test SwitchOff*
On       On
 Off      CountersOne
 On      Two*
  OnOffOffOffOff CoinageFrench-1
  OnOffOffOffOn French-2
  OnOffOffOnOff French-3
  OnOffOffOnOn French-4
  OnOffOnOffOff French-ECA
  OnOffOnOnOn French-Free Play
  OffOnOffOffOff German-1
  OffOnOffOffOn German-2
  OffOnOffOnOff German-3
  OffOnOffOnOn German-4
  OffOnOnOffOff German-5
  OffOnOnOffOn German-ECA
  OffOnOnOnOn German-Free Play
  OffOffOffOffOff USA-1*
  OffOffOffOffOn USA-2
  OffOffOffOnOff USA-3
  OffOffOffOnOn USA-4
  OffOffOnOffOff USA-ECA
  OffOffOnOnOn USA-Free Play
       OnCoinage SourceCMOS*
       OffDipswitch
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