Icom_IC-2KL_adjust.pdf
ICOM IC-2KL ADJUSTMENT PROCEDURE IC-2KL INSTRUMENT TEST ADJUSTMENT CONDITIONS REQUIRED UNIT POINT UNIT PARTS HOW TO ADJUST READING INITIAL Connect IC-2KL to the RIF exciter MAIN R44 MAXIMUM CLOCKWISE SETUP (RF INPUT, ALC, PTT, ACC, etc). MAIN R36 MAXIMUM CLOCK WISE Connect IC-2KL output to a MAIN R18 TURN R18 AND ADJUST STARTING dummy load. Connect IC-2KL to FROM MAXIMUM COUNTER- the power supply IC-2KLPS. CLOCKWISE IDLE Lift center tap lead from L4 and Ammeter (1 A) Power F1 PA1 R9 PA1 ADJUST R9 (ON PA-1) FOR 200 ma CURRENT insert an ammeter. supply regulator PA2 R9 PA2 REPEAT ABOVE FOR PA-2 unit Vc METER Meter switch: Vc Multimeter Vc meter MAIN R40 ADJUST R40 TO INDICATE THE SAME Connect multimeter to fuse (F1) VOLTAGE AS SHOWN ON THE MULTIMETER PROTECTION Meter switch: PRO Dummy Load PRO R1 ADJUST ALC ADJUSTMENT POT (R1) CENTER OF PRO CIRCUIT Set mode to RTTY and transmit meter FOR CENTER OF PRO ZONE (Vc=50) ZONE full power 14MHz .MAIN R44. ADJUST R44 GRADUALLY UNTIL THE PROTECTION PROTECTION CIRCUIT ACTIVATES CIRCUIT THRESHOLD VSWR Short the cathode of D2 to ground. Dummy Load FIL C54 Adjust C54 for minimum Minimum Connect a multimeter to pin3 on J2 of the FIL unit. Set mode to RTTY and Transmit full power a14 MHz. Remove the short Power Meter Switch : PRO. RF Power Meter Antenna MAIN R1 ADJUST ALC ADJUSTMENT POT (R1) Center ALC Zone Set the mode to RTTY and connector FOR CENTER OF ALC ZONE transmit full power 14 MHz R18. ADJUST R18 FOR 500W. REPEAT BOTH ADJUSTMENTS SEVERAL TIMES POWER Meter Switch : PRO. Dummy Load Meter R11 ADJUST R11 FOR 500W 500W METER Set the mode to RTTY and transmit full power 14 MHz IC METER Meter Switch: Ic. Dummy Load Meter MAIN R41 ADJUST R41 TO READ THE SAME CURRENT OF THE Remove fuse F1 and insert an CURRENT AS THE AMMETER AMMETER Ammeter IC PROTECT Meter Switch: Ic. Dummy Load Meter MAIN R36 ADJUST R36 FOR 23 AMPS 23 AMPS Install a 20 ohm 100W resistor between ground and the end of R2 opposite from F1.Set the mode to RTTY and transmit 100w/1.9 MHz (Remove the 20 ohm resistor after adjustment). 7/25/1999 As compiled by AB40J and K9NX
