求翻译：如仪器发生不计数的问题，可按检验键（CHECK）。如计数，说明计数笔坏。如仍不计数，说明仪器本身有问题，若发现故障，请不要随意拆卸，应请有经验的技术人员检修，或由本厂检修。是什么意思？

If the instrument does not count problem, test keys (CHECK). As count, description count is bad. If they do not count, shows that the instrument itself questions, if failure, do not disassemble, experienced technical staff overhaul should be requested, or by a factory overhaul.