if cash received then cash is debit while if cash is paid then cash is credit with other account towards which payment made or amount received.
Debit cash / bankCredit equipment
Debit reserve accountCredit cash / bank
[debit] cashcredit accounts receivable
Debit refund accountCredit cash / bank
debit cashcredit accounts receivable
debit advancescredit cash / bank
debit cash accountcredit bank account
[debit] wages expensescredit cash / bank
Debit wages expensesCredit cash / bank
debit services costcredit cash
Debit cash / bankCredit equipment
Debit reserve accountCredit cash / bank
[debit] cashcredit accounts receivable
Debit refund accountCredit cash / bank
debit cashcredit accounts receivable
debit cash / bankcredit accounts receivable
Debit cash / bankCredit paid in capital