Alinco DX-70, Service Manual

Page: 81 / 116

item
Measurement
Adjustment
Equipment Unit
Terminai Unit Parts
Method
VC01
Frequency
PD1 = 1.2V Freq. Counter
VC01
CN90
1-3
175MHz or above
PDU4.3V
155MHz or below
VC02
Frequency
PDU1.5-4V Freq. Counter VC02
CN90
2-4
VC02 freq.: 71 MHz
Attach the VCO to PLL, then adjust the unit after installing the PLL to the unit.
VC02
Lock range
f=7.100MHz Digital tester PLL TP7
Check 1.5V-4V
VC01
Lock range
f=7.0999MHz
TP6 1V-3V
(«7.1000MHz 3V-4.3V
VC03
Lock range
U0.1500MHz
TP0
VC03 TC961
2.5V
When the voltage is
f=10.4999MHz TC961
6.45V or below, adjust
the unit to 6.5V again.
(6.45V-7.0V)
f=10.5000MHz
TC962
2.5V
When the voltage is
1*21.4999MHz TC962
6.45V or below, adjust
the unit to 6.5V again.
(6.45V-7.0V)
(=21.5000MHz TC963 2.5V
f-29.9999MHz Check
6.5V or below
2nd LO
Level
(=7.100MHz Oscilloscope TP4 PLL
L711
L712
Turn the coils to the
max. repeatedly.
1st LO
Level
(=7.100MHz
TP5
L709
L710
Turn the coils to the
max. repeatedly.
(=7.100MH
z
L706
L707
L708
Turn the coils to the
max. repeatedly.