长虹RTD2648/84S机芯（OEM）升级与改屏参培训教材

长虹RTD2648/48S机芯有如下机型号：

LED32580/39580/LED32560

LED32920/42920EX

LED32D20/39D20

LED32B2200/39B2200

LED32B2100C/39B2100C

LED32560

LED39990/LED39988/LED39989/LED32K20/LED32K20A/LED39K20A/LED42K20A