Yamaha DSP-AX1/RX-V1 - FM Adjustment; Pre-Adjustment Steps and Diagrams

DSP-AX1/RX-V1
DSP-AX1/RX-V1
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■ TUNER ADJUSTMENTS (RX-V1 only)
● Measuring Instruments
FM signal generator (FM SG)
Stereo signal generator (SSG)
AM signal generator (AM SG)
Distortion meter (DIST. M)
AC voltmeter (ACVM)
DC voltmeter (DCVM)
Oscilloscope
Low pass filter (YLF-15, fc=15kHz)
Oscillator
● Dummy antenna
AM SG
(50Ω)
AM dummy antenna
50Ω
10KΩ
AM ANT
GND
● Test point
FRONT END
IC2
IC3
IC1
PK2
T2
T3T5T4
CB4
VR1
VR2
FI3
T1
TP1
TP2
AM ANT GND FM ANT
SIGNAL METER
ADJ.
AM SENSITIVITY
ADJ.
SEPARATION ADJ.
DISCRIMINATOR
BALANCE ADJ.
MONAURAL
DISTORTION
ADJ.
IFT
FM SG
(50Ω)
E1
FM dummy antenna
60Ω
10Ω 45Ω
E2
RECEIVER
(75Ω)
E2 (dB) = E1 (dB) -6 (dB)
FM SG
(75Ω)
E1
FM dummy antenna
E2
RECEIVER
(75Ω)
E2 (dB) = E1 (dB)