Sony icf 28 service manual

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Ð 3 ÐÐ 4 Ð 0 dB = 1µV [FM] Setting: Band switch: FM [AM] Setting: Band switch: AM ¥ Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. ¥ Remove FM antenna in FM adjustments. Adjustment Location: FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L3 86.5 MHz (64.0MHz) CT3 109.5 MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L2 86.5 MHz (64.0MHz) CT2 109.5 MHz AM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L4 520 kHz CT4 1,750 kHz AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L1 600 kHz CT1 1,400 kHz AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T1 455 kHz CABINET (REAR) ASSY Note: Follow the disassembly procedure in the numerical order given. SECTION 2 DISASSEMBLYSECTION 3 ELECTRICAL ADJUSTMENTS ( ): East European model FM RF signal generator 22.5 kHz frequency deviation by 400 Hz signal Output level: as low as possible +– level meter speaker terminal set FM antenna terminal 4 W 0.01 mF AM RF signal generator 30% amplitude modulation by 400 Hz signal Output level: as low as possiblePut the lead-wire antenna close to the set. +– level mete r speaker terminal set 4 W CT3 L3FM Frequency Coverage Adjustment CT4 L4 AM Frequency Coverage Adjustment FM Tracking Adjustment L2 CT2 FM Antenna in AM Tracking Adjustment L1 CT1 IC1 Speaker in T2 T1 AM IF Adjustment [MAIN board] (Component Side) POINTER SETTING 6 cabinet (rear) assy 8 lug, 3 2 two claws 1 claw 9 telescopic antenna 5 claw !Á INLET board 3 lid, battery cas e 4 six screws (BTP3 ´ 14) !¼ two screws (P3 ´ 10) 7 screw (P2.6 ´ 8) 5 Mount the pointer 3 two claws 3 claw 2 knob (TUNE) 1 Turn CV1 fully in the arrow direction. 6 Insert the pointer to the knob (TUNE) fitting the concave position of the pointer to the convex position of the knob (TUNE). 4 chassis