Pioneer DEH-42 Servis Kılavuzu - Sayfa 17
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DEH-59,52,525,49,42,425,225,523,323,223
[Function and Operation
[GND forthe analogcircuit.
— CCi'"'CSC*CSCSC'idzC
Output pin for the spindle drive
Output pin for the sled drive
Output pin for the tracking drive
Output pin for the focus drive
Output pin for the focus balance control
Output pin for the tracking balance control
| Supplies current of positive voltage tothe analogcircuit ==
| Switches coefficient banks forthetracking filter, ==
[Pin No. [Pin Name _
BCK
«GND
/O
finputpinfortheEFMsignal
linput pin forthe holdcontrolsignal =
[InputpinfortheRFOKsignal
linputpinforthe MIRRsignal
GND for the analog circuit
The signal input through these pins is digitized to 8-bit by the A/D converter,
7
OLD
7
74,75
VR2,1
which by operation of the assigned register, can be read into the microcomputer
inputs a focus-error signal fromthe RF amplifier ==
inputs a tracking-error signal fromthe RF amplifier
linput pin forthe trackingcomparator,
CCS
| Output point for midpoint potential for the A/D converter for the LSIportion _|
| Supplies current of accurate voltage tothe analogcircuit
==
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IC's marked by* are MOS type.
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25
Be careful in handling them because thty are very
liable to be damaged by electrostatic inducton.
17