2 ADJUSTMENTS AND CHECKS
2-1 Equipment Requried
~ AM Standard Signal Generator (AM SSG)~ Audio Generator
~ FM Standard Signal Generator (FM SSG)~ Stereo Modulator
~ Oscilloscope~ Distortion Meter
~ AC Voltmeter~ DC Voltmeter
Note : Disconnect external FM antenna prior to adjustment.
2-2 Adjustment Locations
FD1
SVR03
IF COILEC1
SVR01
JW10
SVR02
OSC COILANT COIL
R17 (Pattern Side)
TUNER PCB
2-3 AM Adjustment
~ Output of signal generator should not be greater than necessary to obtain an optimum output reading.
~ Signal generator modulation : 30%
~ Signal frequency : 400Hz
~ Modulation frequency : 600kHz, 1000kHz, 1400kHz [US,C] / 603kHz, 999kHz, 1404kHz [E,UK,K]
SIGNAL GENERATORSET FREQUENCYEQUIPMENTADJUSTMENT
ITEMADJUST FOR
SETTINGSETTINGCONNECTIONPOINTS
520kHz / 1710kHz 520kHz / 1710kHz
520kHz : 1.2 ? 0.1V
[US,C][US,C]JW10
1. Tunning VoltageOSC COIL1710kHz : 7.0? 8.5V
522kHz / 1611kHz 522kHz / 1611kHz DC Voltmeter
1611kHz : 7.2? 8.5V
[E,UK,K][E,UK,K]
TAPE PLAY terminal
600kHz [US,C]600kHz [US,C]
2. IF TrackingAC VoltmeterIF COILMaximize audio output
603kHz [E,UK,K]603kHz [E,UK,K]
Oscilloscope
TAPE PLAY terminalMaximize audio output
600kHz [US,C]600kHz [US,C]
3. RF TrackingAC VoltmeterANT COILRepeat LOW,HIGH
603kHz [E,UK,K]603kHz [E,UK,K]
Oscilloscopefrequency
TAPE PLAY terminal
600kHz [US,C]600kHz [US,C]
4. Seek LevelAC VoltmeterSVR03Tuned on point
603kHz [E,UK,K]603kHz [E,UK,K]
Oscilloscope
? 3? |