JVC RC-W305 Service Manual page 6

RC-W305
TUNER ADJUSTMENTS
Use a plastic screw driver for adjustments.
Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
Set of unit
Supply voltage : DC 9.0V
Speaker impedance :8 ohms
Standard output : 50 mW
Function switch : RADIO
a. Parts Location
TC102
TC103
TC104
T106
T105
T104
b. MW Adjustment
Adjusting
Step
Circuit
Connect AM sweep
1 IF generator to loop
ANT.
Tuning Connect AM SG to
2
coverage
3
Connect AM SG to
4
Tracking
loop ANT
5
c. SW Adjustmen t
Adjusting
Step
Circuit
1 Tuning Connect AM SG to
2 coverage FM ANT & D105(-)
3 Connect AM SG to
Tracking
4 FM ANT &D105(-)
d. SW Adjustmen t
Adjusting
Step
Circuit
1 Tuning Connect AM SG to
2 coverage FM ANT & D105(-)
3 Connect AM SG to
Tracking
4 FM ANT &D105(-)
T101
Band switch : MW
Connections
lnput Output
Connect sweep
generator to IC101
(18)PIN(A)
Connect VTVM to
loop ANT speaker terminals.
Connect VTVM to
speaker terminals
Band switch : SW1
Connections
lnput Output
Connect VTVM to
speaker terminals.
Connect VTVM to
speaker terminals.
Band switch : SW2
Connections
lnput Output
Connect VTVM to
speaker terminals.
Connect VTVM to
speaker terminals.
TC101 T108
T107
T102 T103
C3
Position of
SG
Tuning dial
Frequency
455KHz Low
515 KHz Low end
1640 KHz High end
600 KHz 600 KHz
1400 KHz 1400 KHz
SW Dummy antenna : 75 ohms unbalance
Position of
SG
Tuning dial
Frequency
5.8 MHz Low end
15.4 MHz High end
7.0 MHz 7.0 MHz
12.0 MHz 16.0 MHz
SW Dummy antenna : 75 ohms unbalance
Position of
SG
Frequency Tuning dial
14.8 MHz Low end
22.4 MHz High end
15.0 MHz 15.0 MHz
22.0 MHz 22.0 MHz
6
XL-SV320SL/SV305GD
XL-SV308BU
L103
L102
C2
C4 C1
VTVM
Adjustment
Oscilloscope
T102
Max.
T104
TC102
MW ANT COIL
Max.
PVC101-C3
VTVM
Adjustmen
Oscilloscope
T105
Max.
TC103
T107
Max.
TC101
VTVM
Adjustmen
Oscilloscope
T106
Max.
TC104
T108
Max.
PVC101-C4