Complete service manual, good quality scan, great buy !
Text excerpt from page 1 (click to view)
SERVICE MANUAL
Model 6620LDT and 6620LDG have A version and non-A version types. This service manual is for the 6620LDT and 6620LDG non-A verion models. For the A version models, suffix A is printed to the model number as 6620LDT A and 6620LDG A on the Rating Label, and for the non-A version models, suffix A is not printed to the model number. Refer to the Rating Label on the back of the unit to make sure model types.
