FM Sensitivity Adjustment
SSG.FREQ. FREQ.SETTING ADJUST.POINT REMARK
90MHZ 90MHZ L102 MAX. OUTPUT
106MHZ 98MHZ C161 MAX. OUTPUT
FM Stereo Separation Check
fc fs Main Pilot Level Spec
98.0MHZ 1KHZ 53% 10% 66dB Normal : 25dB Limit : 20dBNormal : 25dB Limit : 20dB
FM Seek Stop Check
fc fs Dev Level Spec.
Seek Stop 98MHZ 1KHZ 40KHZ 23-30dB
Output Output Level
FM ANT.
GND SET
FM SSG OSCILLOSCOPE VTVM
Figure 1-3 FM Stereo Separation AND Seek Stop Cheparation AND Seek Stop Ch
eck
AM (MW) SectionAM (MW) Section
AM (MW) IF Adjustment
IF GENERATOR 450KHZ
Frequency 999KHZ
Adjustment Point T102 AM IF COIL
Maximum output (Figure 1-4)
60cm AM ANT
T102
IF GENERATOR
450KHZ SET
OSCILLOSCOPE
Figure 1-4 AM IF Adjustment
MW Tuning Voltage (VT) Check
522KHZ : 0.9V+/-0.1V Spec.
1611KHZ : 7.25V+/-0.5V
Adjustment Low(522KHZ) VT Basic , Adjust T105(OSC)Low(522KHZ) VT Basic , Adjust T105(OSC)
RF Adjustment(Figure
1 Low Frequency(594KHZ), High Frequency(1404KHz),Usable Senc. (S/N 20dB) < 60dBLow Frequency(594KHZ), High Frequency(1404KHz),Usable Senc. (S/N 20dB) < 60dB
2 Adjust T104(MW ANT), Gain Adjust T104(MW ANT), Gain Output Max.
3 Adjust C162 Gain Output Max.
60cm AM ANT
AM SSG
450KHZ SET
Speaker terminal
VTVM Oscilloscope
Figure 1-5 MW RF. Adjustment
Seek Stop Check
fc fs Dev Level Spec.
999KHZ 400 HZ 30% 40-70dB
AM (LW) Section
Tuning Voltage (VT) Check
144KHZ : 1.0V +/- 0.2V Spec.
290KHZ : 6.0V+/-0.5V
Adjustment Low (144KHZ) VTLow (144KHZ) VT Basic , Adjust T106(OSC)
RF Adjustment
1 Low Frequency (170KHZ), High Frequency(270KHz),Usable Senc. (S/N 20dB) < 68dBLow Frequency (170KHZ), High Frequency(270KHz),Usable Senc. (S/N 20dB) < 68dB
2 Adjust T103 (LW ANT), Gain Output Max.
3 Adjust C183 (LW ANT), Gain Output Max.
Seek Stop Check
fc fs Dev Level Spec.
212KHZ 400KHZ 30% 40-70dB
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