If a miscellaneous member of this plan who is entitled to ordinary disability retirement allowance is not qualified for voluntary service retirement, he or she shall receive an ordinary disability retirement allowance equal to one and one-half percent of his or her final compensation for each year of service. In no event shall said allowance be less than twenty-five (25) percent of his or her final compensation nor shall said allowance, if it exceeds twenty-five (25) percent of his or her final compensation, be greater than the service retirement allowance to which he or she would have been entitled if he or she had remained in the continuous employ of the city until attaining the age of fifty (50) and immediately retired upon attaining said age with the same final compensation as is used to compute his or her disability allowance under this section. If any such miscellaneous member is qualified for voluntary service retirement, he or she shall receive an ordinary disability retirement allowance of an amount equal to the service retirement allowance he or she would have received if he or she had elected to retire from service on the date when he or she is ordered retired for disability, or an ordinary disability retirement allowance equal to twenty-five (25) percent of his or her final compensation, whichever amount is greater. (Prior code § 34.06.615)