Tracking Gain Adjustment - Pioneer PD-X99M Service Manual

PD-xXSSM
specifications
Oscilloscope ee Check items/
ae on eS j j
No. Setting Points Points Adjustment Adjustment procedure
oe aes
TRACKING GAIN ADJUSTMENT (WITHOUT USING AN FTG ADJUSTER)
AF Osc. AF Osc. 1130Hz Connect Oscilloscope to the output terminal of AF os-
output output 0.4Vp-p cillator and adjust its output to 1130Hz and 0.4Vp-p.
terminal control (The oscillator output should be adjusted before the
connection described below.)
Press the TRACK FWD key, PLAY key and PAUSE key
by turns to close all servos.
and
AF Osc.
Adjust VR4 TR.GA (Tracking Gain) so that the Lissa-
output
jous figures become
symmetrical (see photograph
CH-2 7-16),
CN101 pin2
{TR.OT)
Cn101
Pin7 = 100k 2
(TR.IN) |
Pind
(GND) |
Pin2 a
(TA.OT)
Low gain Optimum Gain High gain
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Photograph 7-15
Photograph 7-16
Photograph 7-17
a3