JVC KD-SX780
Circuit Diagrams

KD-SX8250/KD-SX780 5

Block diagram

CD Mechanism CN601 CD PICKUP UNIT

1

MECHA.SWITCH

SYSTEM CONTROLLER IC701

ENC 1,2

VOLUME JOG EN601 REMOCON

BUS0~3 BUCK,CCE,RST CD SERVO CONTROL IC521 CD L/R

AUX L/R

E.VOLUME

Changer

CN251 CN701

2-1

only for KD-SX8250

A B C
SPINDLE FEED RF AMP IC501 RF TE FE

SW1~2 SPINDLE/FEED MOTOR SPINDLE FEED TRACKING FOCUS LOADING MOTOR

VOL CL VOL DA CD LPF IC571 CD L/R
SUB CE SUB MUTE SUB WOOFER IC251 IC252

REMOTE CONTROL RECEIVER IC602 KEY0~2 OPERATION SW. S601~S617 LCDDA LCDCLK LCDCE

2

CN501 SW1~4 LOADING LM BTL DRIVER IC561

CHANGER CONTROL CH L/R IC771 E.VOL IC301 TU L/R FM/AM TUNER TU1 AM/FM J1 IC341,441 L/R-CH LINE AMP
only for KD-SX8250
AUX JACK J601

LCD DRIVER IC601 S1~S68 COM1~3 LCD1

3

FMO MO TRO FOO POWER AMP. IC351

FRONT L/R REAR L/R

Front P.C.B

FRONT L FRONT R REAR L REAR R

J771 Main P.CC LINE OUT J931

CN901

4