Pioneer KEH-M5500 UC Service Manual page 16

FM ADJUSTMENT . rae MOD.: 1kHz,L+R=90% , Pilot=10%
: ES Model
FM SSG(400Hz, 100%) Displayed Adjusting | Adjustment Method
Frequency Point (Switch Position)
Frequency(MHz)| Level(dB » V)
a 98.1 T52 Distortion Meter:Minimum
3 Repeat No. 1-2 alternately so that the center meter indicates the 0 output and
distortion meter indicates minimum output.
a a
2 87.9 Verify that ue V Meter(1)
*(87.5) is 2.140.6
Fro-
nt 3 98.1 Oscilloscope:Optimum
End Symmetry
efe | a]
\o
90
ne
Distortion Meter:Minimum
Rotate T1 jess than £90
Mute
pet [9 a VRIO2 | mV Meer 3am
5dB
PVRS1 | 1 DC V Meter(2):Approx. 5V
ea 14 Verify that DC V Meter
(2) is approx. OV.
Connect collector of Q2 to GND. Connect DC regulated power supply to pin 3 of
FM Front End through resistor(3300.). Add 4.3v from DC regulated power supply.
4 98.1 54 98.1 Verify that DC V Meter
(2) is approx. OV.
AM ADJUSTMENT *( ):ES model when tuning step at 9kHz
AM SSG(400Hz,30% ) Displayed Adjusting Adjustment Method
Na Frequency Point (Switch Position)
Frequency(kHz) | | Level(4B pV) | | Level(4B pV) | V) (kHz)
Tun- 1,710 Verify that DC V Meter
ing *(1,602) (1) is less than 6.5V.
Volt
530 Verify that DC V Meter
*(531) (1) is more than 2.0V.
oa ee T204,205, mV Meter(1):Maximum
(999) ee 206
DOLBY NR ADJUSTMENT
iC, KEH-M580/US,KEH-M5550/ES)
Cassette Tape Adjusting Point Adjustment Method
(Switch Position)
NCT-150(400Hz,200nwb/m) {| VR301(Lch)VR302(Rch) aM NE AE -6dBs + 1dB
DOLBY NR Switch:OFF)
18
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