Pioneer xrc 553 sp schematic

Page 1

6-5. SCHEMATIC DIAGRAM - MAIN Section -

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- See page 41 for IC Block Diagrams, See page 43 forWaveIorms.

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Note on Schematic Diagram:

coco.

All capacitors are in uF unless othenMise noted. pF: qu
50 WV or less are not indicated except tor electrolytics and
tantalums.

All resistors are in Q and V4 W or less unless otherwise

specified.
A : internal component.
: panel designation,

: 8+ Line.
E : adjustment for repair.
Power voltage is do 144 V and led with regulated dc power
supply from battery and accessory terminals.
Voltages and waveforms are do with respect to ground un-
der no~signal (detuned) conditions,
no mark : FM
( ) . MW (LW)
[ ] :TAPE PLAYBACK
* : Impossible to measure

|23l29l30l31

XR-6553SP

Voltages are taken with a VOM (Input impedance 10 MO).
Voltage variations may be noted due to normal production
tolerances.

Waveforms are taken with a oscillosoope.

Voltage mriations may be noted due to normal production
tolerances.

Circled numbers reler to waveforms.

Signal path.
D :FM
.MW(LW)

D :TAPE PLAVBACK
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