SB-061 TS-180S Trouble Sheet 12-18-79 ALC deflection low Replace D21 on IF unit from 7.1 to 9.0V zener. Readjust all ALC pots. IF #2 OUtput low Bridge R77 position, replace R78 with R77 470 ohms. See TKC service Bulletin. RX Noise (OSC CAR leakage) Shorten L31, L33 leads as much as possible. Increase NB effectiveness Replace L31, L33 for 33 uh to 27uh, with SHORT leads. RX noise from strong signals Replace L30 10uh on the IF with self shielding type (new part L40-1035-21). TX audio distortion Adjust T15 on the IF approx 1/2 turn back, readjust all ALC pots up. 10 M PLL unlock change: R77 from 6.8 K to 4.7 K ohm, R94 from 8.2 K to 6.8 K ohm on the PLL unit. TX audio distortion Adjust 10 W bias for 150ma, 100w bias for 100ma. Unlocked all bands Check L2, (Q2 B+) in the PLL unit. FM'ing with DFC See service bullein of 9/10 for L12, L13 change and add resistor and shield. 40 Mlow alc, See bulletin 9/14 change C14, 17. JEB/yn (c) 8979TKC