Pioneer KEH-P7850 Service Manual page 37

FM ADJUSTMENT
Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.)
S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.)
NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow
the circuits to stabilize.
No.
Frequency(MHz)
1 •••••
TUN Volt
IF 2 98.1 M
3 98.1 M
ANT Coil
4 98.1 M
RF Coil
IFT 5 98.1 M
ARC 6 98.1 S
DOLBY B NR ADJUSTMENT
No. Test Tape
1 NCT-150
(400Hz,200nwb/m)
FM SSG Displayed
Level(dBf)
Frequency(MHz)
•••••
60 100
—
5
5
5
40
Adjustment Point
VR301(Lch),VR302(Rch)
Adjustment
Point
108.0 L5
98.1 T51
98.1 L2
98.1 L4
98.1 T31
98.1 VR154
mV Meter(2) : –6dBs±1.0dB
(DOLBY NR Switch : OFF)
KEH-P7850
Adjustment Method
(Switch Position)
DC V Meter(1) : 6V
Center Meter : 0
mV Meter(1) : Maximum
mV Meter(1) : Maximum
mV Meter(1) : Maximum
(STEREO MODE)
mV Meter(1) : Separation 5dB
(STEREO MODE)
Adjustment Method
(Switch Position)
37