For a "NO BLEEDS TAKEOFF" on the B737;
1. APU Bleed Valve open;
2. Engine Bleed Valves closed;
3. Isolation Valve Switch closed;
4. Pack Switches - Both On (The right pack receives no bleed air from engine number 2 as the bleed air valve is closed, nor air from the APU as the isolation valve is also closed.
Engine driven generators are powering their respective generator buses thus no issue there.
Company procedures vary as to reconfiguring the bleeds for normal operation after takeoff.
With the above said, every takeoff is a pressurized takeoff.