Pioneer KEH-P424 Service Manual page 36

KEH-P424,P4700,P4750
QQ
3 7 63 1515 0
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.
FM ADJUSTMENT(KEH-P424/X1M/UC,P4700/X1M/UC)
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
FM ADJUSTMENT(KEH-P4750/X1M/ES)
No.
Frequency(MHz)
1 •••••
TUN Volt
IF 2 98.1 M
TE
L 13942296513
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)
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36
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FM SSG Displayed
Level(dBf)
Frequency(MHz)
••••• 107.9
60
5
5
5
40
FM SSG Displayed
Level(dBf)
Frequency(MHz)
••••• 108.0
60
5
5
5
40
Adjustment Point
VR301(Lch),VR302(Rch)
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y
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8
Adjustment
Point
L5
98.1 T51
98.1 L2
98.1 L4
98.1 T31
98.1 VR154
Adjustment
Point
L5
98.1 T51
Q Q
3 6 7 1 3
98.1 L2
98.1 L4
98.1 T31
98.1 VR154
mV Meter(2) : –6dBs±1.0dB
(DOLBY NR Switch : OFF)
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2 9 9 4 2 8
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)
DC V Meter(1) : 6V
Center Meter : 0
1 5 0 5 8 2 9 9 4
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)
m
co
9 9
2 8 9 9