Jun,1999 SC-8850 1 2 3 4 5 6 7 8 9 10 10 10 10 11 11 11 11 12 12 12 12 13 13 13 13 14 14 14 14 15 15 15 15 16 16 16 16 17 17 17 17 18 18 18 18 19 19 19 19 20 20 20 20 21 21 21 21 22 22 22 22 23 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 27 27 27 27 28 28 28 28 A[0..21] D[0..15] X R D X W R L X P 0 CS X P 1 CS L S P C S X P 0 WAIT X P 1 WAIT X P 0 I NT X P 1 I NT TG A[0..21] D[0..15] A[0..21] D[0..15] X W R L X R D X P 0 C S X P 1 C S L S P C S X P 0 W A I T X P 1 W A I T X P 0 I N T X P 1 I N T CPUPERI CIRCUIT DIAGRAM ／回路図 ／回路図 ／回路図 ／回路図 MAIN BOARD ASSY 1/6 (71344723) A B C D E F G H I J K L M N O P Q R S T U 14 CPUPERI TG A[0..21] A[0..21] A[0..21] D[0..15] D[0..15] D[0..15] X W R L X W R L X R D X R D X P 0 C S X P 0 CS X P 1 C S X P 1 CS L S P C S L S P C S X P 0 W A I T X P 0 WAIT X P 1 W A I T X P 1 WAIT X P 0 I N T X P 0 I NT X P 1 I N T X P 1 I NT X P I N I X P I N I S E T W D S E T W D ST V O L S W V O L S W R L S P M U T E L S P M U T E X DA M U T E DA M U T E X R S T X U C S 0 X U C S 1 MEMORY USB A[0..21] A[0..21] ST ST R R X X D[0..15] D[0..15] X R D X W R L X R D X W R L C S 0 C S 0 C S 3 C S 3 X U C S 0 X U C S 1 W P 1 6 W P 1 6 W P 8 W P 8 R A S R A S C A S H C A S H C A S L C A S L R D W R R D W R F R DY F R DY P C C K P C C K U I N T 0 U I N T 0 U I N T 1 U I N T 1 G P 0 G P 0 G P 1 G P 1 A[0..21] D[0..15] X W R L X R D X P 0 C S X P 1 C S L S P C S X P 0 W A I T X P 1 W A I T X P 0 I N T X P 1 I N T X P I N I S E T W D V O L S W L S P M U T E DA M U T E X R S T X U C S 0 X U C S 1 C S 0 C S 3 W P 1 6 W P 8 R A S C A S H C A S L R D W R F R DY P C C K U I N T 0 U I N T 1 G P 0 G P 1 A[0..21] ST R X D[0..15] X R D X W R L X U C S 0 X U C S 1 P C C K U I N T 0 U I N T 1 G P 0 G P 1 D[0..15]