Pioneer FX-MG8517ZT/UC, Service Manual

Page: 77 / 112

77
FX-MG8517ZT,MG8817ZT
FM ADJUSTMENT
Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.)
S1:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.)
S2:STEREO MOD., 1kHz, L or R=60%(40.5kHz+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.
FM SSG Displayed Adjustment Adjustment Method
No.
Frequency(MHz)
Level(dBf)
Frequency(MHz)
Point (Switch Position)
TUN Volt
1 ••••• ••••• 108.0 L5 DC V Meter(1) : 6.0V
Center 1 98.1 M 65-85 98.1 L52 Center Meter : 0
Meter
IFT 1 98.1 M 5-15 98.1 T31 mV Meter(1) : Maximum
RF Trimmer
1 106.1 M 5-15 106.1 TC3 mV Meter(1) : Maximum
ANT 1 98.1 M 5-15 98.1 TC1,TC2 mV Meter(1) : Maximum
Trimmer
RF Coil
1 89.9 M 5-15 89.9 L6 mV Meter(1) : Maximum
RF Trimmer
1 106.1 M 5-15 106.1 TC3 mV Meter(1) : Maximum
RF Coil
1 89.9 M 5-15 89.9 L6 mV Meter(1) : Maximum
RF Trimmer
1 106.1 M 5-15 106.1 TC3 mV Meter(1) : Maximum
Separation
1 98.1 S 65 98.1 VR101 mV Meter(1) : Maximum
ARC
1 98.1 S 38 98.1 VR154 mV Meter(1) : Separation 5dB
Separation
Interstation
1 98.1 M 65 98.1 ••••• mV Meter(1) : AdB
Noise 2
98.1 M
-
∞
98.1 VR151 mV Meter(1) : A-20dB
Search
1 98.1 M 33 98.1 VR156 DC V Meter(2) : more than 3.5V
Sensitivity
2 98.1 M 32 98.1 VR156 DC V Meter(2) : 0V
3 Repeat steps 1 and 2 until the adjustment standards are satisfied.
RBDS SL ADJUSTMENT
FM SSG Displayed Adjustment Adjustment Method
No.
Frequency(MHz)
Level(dBf)
Frequency(MHz)
Point (Switch Position)
TUN Volt
1 104.1 S2 35 104.1 VR251 DC V Meter(3) : 1.75V+0.05V
-0.35V
DOLBY NR ADJUSTMENT
No. Test Tape Adjustment Point Adjustment Method
(Switch Position)
1 NCT-150 VR301(Lch),VR302(Rch) mV Meter(2) : –8.24dBm(300mV)±1dB
(400Hz,200nwb/m) (DOLBY NR Switch : OFF)