Disconnect the signal generator and the copper wire between SW1 and BC.
(4) 52.5 MHz Selective Filter. T109
between TP1~7 and ground, and the scope between TP1~ and ground. Set the center frequency of the sweep generator to 52.5 MHz. Adjust T109 to 1116 until the scope screen shows the curve shown in Fig. ~. Disconnect the sweep generator and scope and reconnect the wiring at TP101 After completion of the above procedures make sure that the RF voltage between 1P1 and ground is approximate ly 0.3 to 0.5 volt RMS. It' not, repeat procedure. (5? LOCK Level. VR1~12 Adjust yR102 until the LOCK lamp turns off at any MHz setting of the MHz dial. OSC UNIT P13-1523 U Ml-Iz Setting. 1201 .TC201 Connect the signal generator to antenna connector SW2 and set its frequency to 3.5 MHz. Tune the receiver to the signal generator signal. Adjust 1201 carefully until the LOCK lamp turns off at the center of 3 MI-Iz scale on the MI-Iz dial. Set the signal generator frequency to 27.5 MHz and tune the receiver to this signal. Carefully adjust 'I~C2~1 until the LOCK lamp turns off at the center of 27 MHz scale on the MHz dial. Re~at above procedures until the LOCK lamp turns off at the center of every MHz scale. from 0 to 29 MI-Iz. Disconnect the signal generator. IF AF UNIT P13-1528 41) Main Tuning Dial. T403 TC4~ The following alignment should be done after warm-up of the receiver. Set the dial hair line to the center of the dial window and FINE TUNING control to 12 o'clock position. When the main tuning dial is rotated until it stops over 1000 scale, A mark should be within 5 in/in from the hair line. Set the MODE switch to LSB and Mhz dial to 0. Set the main tuning dial to 1 000. then beat tone will be heard. Adjust T~ for zero beat. Set the main tuning dial to 0 and adjust TC403 for zero beat. Repeat above procedures until the tracking is completed. 42) 2nd IF Tracking. TC401 TC402 Connect the signal generator to the antenna terminal SW2 and sct its frequency to 7.1 MHz. Tune the receiver to the signal from the signal generator. Set the output voltage from the signal generator for S-3 reading on S-meter. Adjust TC401 and TC402 for maximum S-meter reading. Set the sPinal generator to 7.9 Mhz and tune tlw receiver to 7.9 MI-Iz signal. Adjust 1401 and T402 for maximum S-meter reading. Repeat these procedures until the tracking is completed. (3) 3rd IF. 1404 14~ Set the signal genenitor to 7.5 Mhz and tune the receiver to this frequency. Adjust 1404 and '4~S for maximum S-meter reading. Adjust signal level so as not to sat ulate. 4) S-meter Sensitivity, VR40 Set the output levd of the signal generator to 100 dB. And tune the receiver for maximum 5- mcter reading. Adjust VR4~,1 tbr S-meter full scale. Disconnect the signal generator. 5) BFO Frequency, 1406 Connect a frequency counter to TP40~ . Set the MODL switch to LSB. Adjust 1406 for 457 kI-Iz on the frequency counter reading. Set the MODE switch to USB!CW and adjust TC404 fbr 453 kIIz. |