Quick Reference for Standard C510A

Functions
FunctionProcedure
Transfer current memory to VFOFunc+SC
Transfer Call memory to VFOTurn Selector or press Up or Down/*
Fast frequency dialFunc+Selector
VFO reset (memories retained)Hold down Moni while powering up
All resetHold down Func+Moni while powering up
Change CallSelect call, Func+V/M, set frequency, Func+V/M
Change CallSet freq in VFO, Func+V/M, Call, Call, Call
Using My keyFunc+Up/*
Assign My keySet, select function to assign, Func+Up/*, Set
Store memorySet freq in VFO, Func+V/M, select memory, Func+V/M
Erase memorySelect memory, Func+Set, Func+Selector turn
Split modeSet receive frequency, Set, dUP:on, SP (tx Freq), Set
Scanning
Scan typeProcedure
1MHz scanSet frequency in VFO, SC to start, SC to end
Entire bandStart 1MHz scan, Func+SC to scan band (Func+SC toggles band/MHz scan modes)
Program scanSet VFO mode, Func+PS, select program #, enter start freq using numeric keys, enter end freq using numeric keys, SC to end entry. To start scan, set to VFO, Func+PS, select program #, PS to start scan, PS to pause scan, SC to end scan. Numerics can be used while scanning to change pgm #. To change scan range, Func+PS, select pgm #, use Down or Up/* to select start or end freq, and numerics to enter new frequency, SC to end.
Simple program scanSet start memory in VFO, Func+SC, enter end freq with numerics, scan starts. SC to stop scan.
Erase scan rangeFunc+PS, select program #, Func+Set, Func+Selector, SC
Memory scanMemory mode, SC to start/stop scan
Marked memory scanMemory mode, select memory to mark, Set, mm:on, Set To set scan mode, VFO mode, Set, mm:on, Set To start scan, Memory mode, SC to start/stop scan
Memory block scanMemory mode, Func+PS to select memory block, SC To start scan, Memory mode, PS (SC to stop) To change block range, Mem mode, Func+PS, select block, input 3 digits as new start memory address, use Down or Up/* to recall end memory address, input 3 digits for new end address, SC to end To change block during scan, use 2 digits with numerics
Tone Squelch ScanSet frequency, Set, tSq:on (TSQ), CF 100.00, SC to scan
Keys
KeystrokeVFO Mode FunctionMemory Mode Function
Llamp for 5 seconds
Func+Llamp on continuously (until Func+L)
Moniopen squelch (& reverse on repeater)
Func+Monisquelch open continuously (Moni cancels)
PTT+Monitransmit 1750Hz tone burst
Callrecall/cancel the Call memory (different Call in each band)
Func+Callrecall/cancel the DTMF memory
V/Mswitch to Memory modeSwitch to VFO mode
Func+V/Mstore the memoryallows changes to the memory (also Call)
Bandchanges bandsNo function
SCstarts/cancels 1MHz scanstarts/cancels memory scan
Func+SCsets the end frequency of program scantransfers memory contents to VFO
while scanning switches between 1MHz scan and All scan
PSstarts/holds program scan modestarts block memory scan
Func+PSsets range of program scanassigns block during memory scan
PO/FLselects transmitter power level (1W/0.7W high, 0.3W low)
Func+PO/FLsets/cancels frequency lock
Setrecalls/cancells Set mode
Func+SetNo Functionclears the memory or a setting, program scan range or the DTMF memory
Up/*increase frequency or memory address, restarts scan upward
Func+Up/*access the set mode in My key
Downdecrease frequency or memory address, restarts scan downward
Set mode functions:

Here's another quick reference from a ham on the internet.