Tuner Adjustments - JVC RC-BX33SL Service Manual

RC-BX33SL

TUNER ADJUSTMENTS

use a plastic screw driver for adjustments.
Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter
Supply voltage :
Speaker impedance :
Function switch :
a. AM Adjustment
ste Adjusting Tuning
circuit Frequency
1 IF 1000 KHz
(455 / 465KHz)
2 Tuning 520KHz
3 Coverage 1640/1740 KHz
4 600 KHz
5 1400 KHz
b. FM Adjustment
ste Adjusting Tuning
circuit Frequency
1 IF
(10.7 MHz) 98.0 MHz
2 Tuning 87.4 MHz
3 Coverage 108.3 MHz
4 90.0 MHz
5 Tracking 106.0 MHz
1-12
DC 12.0 V
8 OHMS
RADIO
BAND SELECT SWITCH : AM
Input Connection
Measurement input
AM Sweep Loop
Generior ANT
-- --
AM Signal Loop
Generior ANT
BAND SELECT SWITCH : FM
Input Connection
Measurement input
FM Sweep TP4(H)
Generator TP3(E)
-- FM ANT.
FM Signal FM ANT
Generator TP1 (E)
TP2(H)
.
Output Connection Adjustment
Measurement output parts
TP4(H)
Oscilloscope
TP8(E)
TP4(H)
Oscilloscope PVC4
TP8(E)
MW COIL
TP4(H)
Oscilloscope PVC3
TP8(E)
FM Dummy Antenna : 75 ohm unbalance
Output Connection Adjustment
Measurement parts
output
TP4(H)
Oscilloscope
TP8(E)
TP4(H)
Oscilloscope PVC2
TP8(E)
TP4(H)
Oscilloscope PVC1
TP8(E)
Oscilloscope
T105
(Non-adjustment)
T102
Maximum
Oscilloscope
T104
T106
(Non-adjustment)
L104
L103 Confirm with being
near by effective
sensitivity