LG ADJUSTMENT free download

File name ADJUSTMENT.pdf

ADJUSTMENTS This set has been aligned at the factory and normally will not require further adjustment. As a result, it is not recommended that any attempt is made to modificate any circuit. If any parts are replaced or if anyone tampers with the adjustment, realignment may be necessary. ADJUSTMENT & TEST POINT L21 (FM IF ADJUSTMENT) L140 VR298 (RECORD BIAS (MOTOR SPEED ADJUSTMENT) ADJUSTMENT) Figure 1. Main P.C. Board -8- TUNER ADJUSTMENT Item Test Point Adjustment Adjust for DC Voltage IC102 , pin L21 0V 50mV Electronic FM Antenna OSCILLOSCOPE Terminal Signal Generator 26 , 28 PIN Unit GND Figure 2. Tuner(S curve) Adjustment Connection Diagram TAPE DECK ADJUSTMENT 1. AZIMUTH ADJUSTMENT Deck Mode Test Tape Test Point Adjustment Adjust for Remark Speaker Forward:Righthand Side Screw Playback MTT-114 Head Screw R/L Maximum Terminal Reverse:Lefthand Side Screw Electronic Dual-trace Voltmeter synchroscope Head Speaker Playback Mode Terminal L out L ch