| PLL UNIT |
| |
| (1) PLL Reference
Oscillator Adjustment |
| |
| Set the MR switch to
off, and connect a frequency counter to pin 9 of Q2041. Adjust TC2002
for a reading of exactly 3.2 MHz on the counter. |
| |
| (2) PLL Local
Alignment |
| |
| a. |
Connect the RF probe of a VTVM to
pin 1 of J2005. Adjust T2005 and T2006 for a
maximum meter reading on the VTVM (typical value: 100-200 mV RMS). |
| |
| b. |
Connect a frequency counter to pin
1 of J2005. Adjust TC2001 for a reading of exactly 47.6 MHz on the
counter. |
| |
| (3) VCV Line
Adjustment |
| |
| a. |
Connect the DC probe of a VTVM to
TP2005 (PLL Unit), and rotate the main dial
to the "1000" position on the analog dial. Adjust T2007 to secure a reading of 7 volts on the VTVM. |
| |
| b. |
Rotate the main dial to the "0"
position on the analog dial. Make certain that the voltage is within the range
of 1 .5 - 2.0 volts. |
| |
| c. |
Connect the VTVM DC probe to
TP2003, and rotate the main dial to the
"1000" position. Set the BAND switch to the 5 MHz. band. and adjust T2004 to secure a reading of 7.4 volts on the VTVM. |
|
|
| d. |
Change the BAND switch to the 12,
20. and 29 MHz band positions, and adjust VCO coil, T2003, T2002,
T2001, respectively, to secure readings of
7.4 volts on the VTVM. |
| |
| e. |
Set the BAND switch to the 21, 13
and 0 MHz band positions, and rotate the main dial to the "0" position on the
analog dial. Make certain that the voltages at TP2003 are within the range of 1.5 - 2.0 volts. |
| |
| MEMORY UNIT |
| |
| (1) M FINE
Adjustment |
| |
| Set the M FINE control
to the 12 o'clock position, and connect a frequency counter to pin 9 of
Q6021. Adjust T6003 for a reading of 8.192 MHz on the counter. |
| |
| (2) VCV Line
Adjustment |
| |
| Initially set the MR
switch in the OFF position, and connect a VTVM to TP6001. Rotate the main dial to the "0" position on the
analog skirt, and push the M button. Then press the MR button. and adjust
TP6001 to secure a reading of 6.6 volts on
the VTVM. |
|
