Sharp 21FL94 Service Manual - Page 24

21FL94 24 ADJUSTMENT ITEM ADJUSTMENT POSITION M04, M05 SEPARTION ADJUSTMENT STEP RANGE 0~63 CONTROL I2C BUS CONTROL PRE-ADJUST REQUIREMENT CONTENT INPUT CONDITION OPTION SET UP, BUS SET UP, VCO ADJ, RF-AGC, MS-LEVEL, MTS-VCO, FILTER STEREO SIGNAL SIGNAL 1,: MODULATION 30%, L-CH ONLY, NR-ON, 300Hz SIGNAL 2,: MODULATION 30%, L-CH ONLY, NR-ON, 3kHz RF INPUT OUTPUT IC 3001 39 PIN 1) INPUT SIGNAL 1, ADJUST BUS DATA OF M04 UNTIL THE OF 39 PIN BECOME MINIMUM LEVEL. 2) INPUT SIGNAL 2, ADJUST BUS DATA OF M05 UNTIL THE AC VOLTAGE OF 39 PIN BECOME MINIMUM LEVEL. 3) REPEAT STEP 1) AND 2). SET THE SOUND VOLUME TO MAXIMUM THEN MAKE SURE THE READING FROM THE SPEAKER TERMINAL MUST BE OVER THE SPEC AS SPECIFIED BELOW. ADJUSTMENT PROCEDURE [CHECKING SPEC] OVER 25 dB (CHECKING SPEC : OVER 20 dB) HISTORY SYMBOL REVISED CONTENT, OF REVISION 24-1 24-2