JVC MX-GB5 - Service and Support Information; Finding Authorized Service Centers

(No.MB160)1-33
4.1.2 AM (MW), LW, SW1, SW2 adjustment
Circuit
to be
Adjusted
Measuring Instrument &
Arrangement
Step
S.S.G
Frequency
Radio dial
Setting
Adjusting
Point
Adjust for
1 522kHz 522kHz MW OSC
Adjust for 1.0V±0.1V at the low.
(IR117)
2 1611kHz
MW OSC
AM
(MW)
RF 1 594kHz 594kHz MW ANT Maximum out
INTER FREQ
1 455kHz 522kHz TL2 Maximum out
OSC Fig.4
1 146kHz LW OSC
LW
2 290kHz
RF
1 150kHz 150kHz LW ANT
OSC Fig.4
1 2.3MHz SW1 OSC
SW1 2 7.3MHz -
RF
1 3.5MHz 3.5MHz SW1 ANT
OSC Fig.4
1 9.5MHz SW2 OSC
SW2
2 26.1MHz
-
RF
1 10MHz 10MHz SW2 ANT
OSC
Connect AM signal
generator to loop
antenna,VTVM AND
oscilloscope
(Fig.4)
Check for 7.0V±1.0V at the high.
(IR117)
1611kHz
LW OSC
Adjust for 2.0V±0.1V at the low.
Check for 7.0V±1.0V at the high.
Maximum out
Adjust for 1.0V±0.1V at the low.
Check for 8.5V±1.0V at the high.
Maximum out
Adjust for 1.5V±0.1V at the low.
Check for 8.0V±1.0V at the high.
Maximum out