Tuner Adjustment; Measuring Instruments; Dummy Antenna; Test Point - Yamaha RX-V496 Service Manual

TUNER ADJUSTMENT

Measuring Instruments

1) FM signal generator (FM SG)
2) Stereo signal generator (SSG)
3) AM signal generator (AM SG)
4) Distortion meter (DIST. M)
5) AC Voltmeter (ACVM)
6) DC Voltmeter (DCVM)
7) Oscilloscope
8) Low pass filter (YLF-15, fc=15kHz)
9) Oscillator

Test point

AM
SENSITIVITY
ADJ.
FM ANT
GND
AM ANT
MONAURAL
DISTORTION ADJ.
(ANTENNA)
IFT
U, C, R, T models
PK1
FRONT END
T2
PK2
VR1
TP2
16
IC1
VR2
T1
TP1
T3
A, B, G, L
models only
DISCRIMINATOR
BALANCE ADJ.
(FRONT)
RX-V496/RX-V496RDS/HTR-5240/HTR-5240RDS

Dummy antenna

FM dummy antenna
10Ω
E1
FM SG
(50Ω)
E2 (dB) = E1 (dB) -6 (dB)
FM dummy antenna
E1
FM SG
(75Ω)
E2 (dB) = E1 (dB)
AM loop antenna
AM dummy antenna
AM SG
(50Ω)
A, B, G, L models
SIGNAL METER ADJ.
IC2
IC3
T5 T4
CB4
SEPARATION
ADJ.
45Ω
E2
RECEIVER
(75Ω)
E2
RECEIVER
(75Ω)
10KΩ
AM ANT
GND
IFT
Front
Panel
22