(a) Acceptance of goods occurs after the lessee has had a reasonable opportunity to inspect the goods and: (1) The lessee signifies or acts with respect to the goods in a manner that signifies to the lessor or the supplier that the goods are conforming or that the lessee will take or retain them in spite of their nonconformity; or(2) The lessee fails to make an effective rejection of the goods (section 490:2A-509(b) ).(b) Acceptance of a part of any commercial unit is acceptance of that entire unit. Where photo processing machine was not delivered to plaintiff and plaintiff thus did not have a reasonable time to inspect the machine, leasing company did not show that plaintiff agreed to accept the machine before delivery under this section by signing the acceptance certificate.104 Haw. 148 (App.),85 P.3d 1099.