Pioneer CDX-FM653, Service Manual

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CDX-FM653
• Note :
This mechanisms is detects the height of the stage using slide-variable resistance.
To absorb dislocation of the stage height caused by differences in the mechanism and the CD core unit, adjustment
must be made for each CD-mechanism module using a variable resistor.
Normally, readjustment is not needed, as this has been adjusted at the factory. However, adjustment of elevation is
required according to the procedure explained below if an elevation error has occurred or if the CD core unit has
been removed.
• Purpose :
To adjust and confirm whether or not elevation operates correctly.
• Adjustment Method :
• Measuring Equlpment: Oscilloscope, One L.P.F.
• Measuring Points :
EREF, EPVO
• Setting : Without a magazine in Test mode
With the mechanism placed upside-down (Place the CD mechanism module so that the CD
core unit is above.)
• Confirmation Procedure
1. Enter Test mode.
2. Press key P.MODE to enter Mechanism Test mode.
3. Press key RANDOM twice to specify the amount of movement.
6.3 ADJUSTMENT OF ELEVATION WHEN THE CD CORE UNIT HAS BEEN REMOVED
FOR MAINTENANCE
-
Adjustment When Error Code 60 is Displayed Because of Malfunctioning Elevation
TRACK FUNCTION
' "
TRACK FUNCTION
72 00' 00"
EREF
EPVO
Oscilloscope
CD CORE UNIT
L.P.F.
47k
Ω
1
µ
F
Examples of display
TRACK FUNCTION
72 00' 02"
TRACK FUNCTION
72 00' 01"
The amount of movement
changes each time key
RAN-
DOM is pressed.
maximum movement
i
Key RANDOM
i
during movement
i
Key RANDOM
i
minimum movement
TRACK FUNCTION
72 00' 00"
i
i
Key RANDOM