Honeywell MX7 Tecton Reference Manual page 346

To get this 5250 Key / Function
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9-12
Press these Keys in this Order
Shft 3
Orange R
Shft 4
Blue R
Orange T
Shft 5
Orange Y
Shft 6
Orange U
Shft 7
Orange O
Shft 9
Orange P
Shft 0 (zero)