Pioneer CX-3195 Service-Handbuch - Seite 17

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1.4 POWER SUPPLY AND LOADING BLOCK

For the power supply for this system, the VD (7.5 ± 0.5 V) and the VDD (3.3 ± 0.165 V), which are supplied from the

motherboard, are used. The two power supplies, the VD mentioned above (for the drive system), and the VDD (for the LSI:

3.3 V), are used in this system.

The CPU of the LSI controls ON/OFF with "CONT", except for Load/Eject of the CD driver. For ON/OFF of the Loading

drive, no particular control terminals are available, but the input signal "LOEJ" assumes an equivalent role. Also, the LCO

output switches LOADING MODE and CARRIAGE MODE with "CLCONT".

CN901

PGND

GND

VDD

Fig.1.4.1 Power supply/loading system circuit block

CLCONT

Fig.1.4.2 Loading/carriage mode shift

LCOP

IC301

MOTOR

BA5839FP

LCOM

Loading Mode

CLCONT

43 5

3.3VDD

S903 S905 S904

Carriage Mode

Loading Mode

CX-3195

IC201

PE5547A

S901