Question: how to test jhd162a lcd?
Answer: 1) VSS=gnd ,VCC-5v, VEE-5v directly ,LED+ -5v, LED- - gnd directly and data pins respectively . 2)VSS=gnd ,VCC-5v ,VEE- 10k POT ,LED+- 5v through 330OHM ,LED- - gnd directly and data pins respectively.