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Test equipment required:
|
Power Supply: 13,8 V |
Frequency Counter |
DC Voltmeter |
Oscilloscope |
|
Step |
Condition |
Adjustment |
Procedure |
|
1 |
CH: 40 |
L12 |
Connect DC Voltmeter to TP2 ( R122). Adjust L12 for 6 V +/- 0.1 V on DC Voltmeter. Confirm 2 V on CH 1 Band A. |
|
2 |
CH: 19 |
L13 |
Connect Oscilloscope to TP3. Adjust L13 for maximum reading on Oscilloscope. |
|
3 |
CH: 19 |
L14 |
Connect Frequency Counter to TP3 (R73). Adjust for 16.490MHz +/- 20Hz on Frequency Counter. |
|
4 |
CH: 19 |
L15 |
Connect Frequency Counter to TP3 (R73). Adjust for 16.4925MHz +/- 20Hz on Frequency Counter. |
|
5 |
CH: 19 |
L16 |
Connect Frequency Counter to TP3 (R73). Adjust for 16.4875MHz +/- 20Hz on Frequency Counter. |
|
6 |
CH: 19 |
L24 |
Connect Frequency Counter to TP4 (R104). Adjust for 10.6975MHz +/- 20Hz on Frequency Counter. |
|
7 |
CH: 19 |
L23 |
Connect Frequency Counter to TP4 (R104). Adjust for 10.6925MHz +/- 20Hz on Frequency Counter. |
|
8 |
CH: 19 |
L15 |
Connect Frequency Counter to TP5 (R82). Adjust for 10.695MHz +/- 20Hz on Frequency Counter. |
Test equipment required:
|
Power Supply: 13,8 V |
Frequency Counter |
DC Voltmeter |
Oscilloscope |
|
50 ohm RF Dummy Load |
LF SSG |
|
Step |
Condition |
Adjustment |
Procedure |
|
1 |
Band C, Channel 19 |
VR10 |
Disconnect the PCB-834 from Check Point of Main PCB and connect DC Ammeter to TP8 +, TP6 -. Adjust for 50mA on DC Ammeter. |
|
2 |
Same as STEP 1 |
VR9 |
Connect AS Ammeter to TP8 +, TP7 -. Adjust to obtain the current 80mA. |
|
3 |
Same as STEP 1 |
L42 |
Connect PCB-834 to Check Point of main PCB. Connect RF Power Meter, RF VTVM and Oscilloscope to Dummy Load. Set VR8 Max. Turn core of L42 ClockWise to maximum at the bottom. |
|
4 |
Same as STEP 1 |
L41 L43 L49 |
Adjust coils for maximum indication. While then, keep output voltage under 25V by adjusting LF SSG |
|
5 |
Band E, Channel 40 |
L42 |
Set E-band Ch. 40, adjust for maximum reading and then set A-band Ch. 1 and adjust for minimum difference from Band E Ch. 40. |
|
6 |
Band E, Channel 19 |
L30 |
Adjust L30 to obtain the maximum indication on the RF VTVM. |
|
7 |
Same as STEP 6 |
VR8 |
Adjust VR3 to obtain RF output of 32.4V on RF VTVM. |
|
8 |
Same as STEP 1 |
VR5 |
Adjust VR5 to obtain the minimum carrier leakage between USB and LSB. |
|
9 |
Band E, Channel 19 |
VR11 |
Adjust VR11 to obtain RF carrier power of 10Watt on RF Power Meter. |
|
10 |
Band C, Channel 19 |
VR7 |
Adjust for the needle of Bilt-in Meter to blank zone of TX Power meter. |
|
11 |
Same as STEP 10 |
VR12 |
Adjust VR12 to obtain 90% (negative) modulation. |
|
12 |
Band C, Channel 19 |
VR4 |
Connect Deviation Meter. Adjust for 3kHz Deviation on DeviationMeter. |
|
13 |
Band C, Channel 19 |
VR3 |
Set AF SSG to 50% Modulation, then add 16dB. Adjust VR3 to 100% modulation indication on the Tranceiver meter. |
|
14 |
Band C, Channel 19 |
VR6 |
Adjust Transmitter Frequency for 27.185MHz +/- 100Hz on Frequency Counter. |
Test equipment required:
|
Power Supply: 13,8 V |
Frequency Counter |
DC Voltmeter |
Oscilloscope |
|
RF SSG |
8 ohm DUMMY LOAD |
Connect oscilloscope across LF DUMMY LOAD at External Speaker.
|
Step |
Condition |
Adjustment |
Procedure |
|
1 |
Band C, Channel 19 |
Set RF SSG to 27.185MHz with 30%, 1kHz modulation. |
|
|
2 |
Same as STEP 1 |
L6 |
Turn the core of L8 to ClockWise maximum at the bottom. |
|
3 |
Same as STEP 1 |
L5 L7 L8 L9 |
Adjust coils for maximum reading on oscilloscope |
|
4 |
Same as STEP 1 |
L6 |
Set RF SSG to 26.965MHz. Adjust for maximum reading on oscilloscope. Then turn 1/4 turn AntiClockWise. |
|
5 |
Same as STEP 1 |
VR1 |
Set the RF SSG to 100uV output with no modulation. Adjust VR1 to obtain "S-9" on transceiver`s meter. |
|
6 |
Same as STEP 1 |
VR2 |
Adjust VR2 to turn off the squelch circuit when RF SSG RF output comes up to 1000uV |
|
7 |
Same as STEP 1 |
L3 |
Set RF SSG to 5uV. Connect oscilloscope to TP-1 (D2) so that adjust for maximum reading. |
|
8 |
Same as STEP 1 |
L4 |
Set the RF SSG to FM, 1kHz, 1.5kHz deviation, 1 mV output. Adjust L4 to obtain the maximum indication on oscilloscope |
