Thanks. Here is my list for the UBCD436PT.
2 + 9 + CHAN MOD = MEMORY CLEAR
CHAN MOD + 1 = LCD / Keypress test
CHAN MOD + 2 = LCD Contrast Adjustment
CHAN MOD + 4 = Tone Out Test
CHAN MOD + 9 = Clock Reset
SYSTEM + 1 = Close Call Test (Knob controls band)
SYSTEM + 2 = USB Serial Test
SYSTEM + 4 = Load Test Data 144MHz
SYSTEM + 5 = LCD Brightness
SYSTEM + 6 = Load Test Data 163MHz
SYSTEM + 7 = Trunking Test
SYSTEM + 8 = NWR-SAME Test
SYSTEM + 9 = Load Scan Test Data