Adjustment - Kenwood FZDA07ELEF2 Service Manual

● X05-615
Item
1. Check power
q Check output voltage at the power supply unit. TP119: 8.0±0.16V
supply voltage
q Connect the frequency counter between TP121 and TP124 (GND)
2. Adjustment of
w Make connection between TP122 and TP124 (GND)
diversity free-run
e Tune VR100 to set the frequency to 15.734±0.1kHz
frequency VR100
r Reset TP122 to "OPEN" after the tuning
q Apply TV antenna input terminal the 9ch color bar and RF signal of
70dBµ
3. TV and Stereo
w Set the voice modulation frequency to 1kHz, the modulation frequency
Adjustment of
shift to ±25kHz and the mode only to stereo Rch
separation VR300
e Connect the oscilloscope to TP305 and TP311 (GND) and tune the
VR300 to get the minimum output amplitude
q Apply TV antenna input terminal the 9ch color bar and RF signal of
30dBµ
4. TV S-meter
w Audio signal shall not be modulated
adjustment VR302
e Connect the DC voltmeter between TP312 and TP313 (GND) and tune
VR302 to get 1.80±0.05V

ADJUSTMENT

Adjustment Method and Adjustment Values
FZDA07ELEF2/EREF2/MRHF2
Conditions
• No signal: Can use RF signal of 9CH,
color bar and 70dBµ
• Antenna input = No signal
• Frequency counter
• TV signal generator
• TV audio multiple signal generator
• 30dBµ shall be measured with the
terminal impedance of 75Ω
• PS ratio = 6dB
• TV signal generator
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