16 May 93

Symptom: MGTC-20, DXTC-20, DXTH-20 – ERROR CODE F7

Solution: MULTIPLE SOLUTIONS

Cause: MODULE TEMPERATURE PROTECTION

Remarks:

DESCRIPTION:

THIS IS A IPM OVERTEMPERATURE PROTECTION.

REPAIR:

1) CHECK THE CONDITION OF THE IPM AND THE HEAT SINK. IF THERE IS A LOOSE CONNECTION, PLEASE FIX IT

2) CHECK IF THE IPM IS ABNORMAL OR NOT