5 21 5 20 SERVICE MANUAL 5M21 5M20 Alignment Procedure The 5M21 and the 5M20 are of DC amplifier configuration unlike conventional AC amplifiers Therefore the following items should be noted in case of the alignment procedure Don t think the same 1 2 3 4 5 6 Position 1 2 3 4 Position 1 2 3 procedure as that for the AC amplifier can be
SERVICE MANUAL OLID STATE STEREO INTEGRATED AMPLIFIER L 4 Idle Adiustment 1 Detach the fuses from the fuseholders 401 fixed on PD1257 2 Connect a DC amperemeter to each fuseholder 401 Print terminal is positive 3 Adjust VR4OL to obtain 50mA reading on the meter l minute after turning the Power Switch on This is for Lch 4 Same procedures from 1 to 3 should be taken on F501 of 1258 against Rch DC Offset Adjustm