Sony MDX-CA680 service manual Printed Wiring Board KEY Board

MDX-CA680/CA680X

4-15. PRINTED WIRING BOARD – KEY Board –			• See page 28 for Circuit Boards Location.
1	2	3	4	5	6	7	8	9	10	11	12	13

				1	2
A	3	4	4		3	3	4
	2	3		4		4	5
		5	3		2	2
	1	2	5	5		5	6
		6	2		1	1
		1	6			6	1	2	3
			1	6

A	K	4	3
A
	K

B			K	6	5	4
				A
3	4	3	K	A
			4
2	5	2	5	1	2	3
1	6	1	6

	A	K							A	K
									A	K	6	5	4
					3	4	3	4
C	LED902, LED903		K	A	2	5	2	5
			K		1	6	1	6
	A	K		A
					6	1	6	1
				6					1
		6			1	2	5	6		6	1
				1	5			2	2
		5		5	2	3	4	5		5	2
				2	4			3	3
		4		4	3			4		4	3
				3

D

E

F

G

LSW901-911, 914-919		LED900, 901, 913, 914
(CA680)	(CA680X)
		(CA680)	(CA680X)

	3	4	3	4				(Page 36)
	2	5	2	K	A	K	A
• Semiconductor Location				5
				K	A	K	A

				1	6	1	6
Ref. No.	Location	Ref. No.	Location
D902	G-12	LED902	B-1
D903	G-12	LED903	C-1
D904	G-11	LED905	B-4
D906	G-11	LED906	B-11
D908	G-11	LED909	C-11
D971	B-11	LED910	C-4
IC900	F-8	LED913	C-12
		LED914	B-13
IC971	A-11	Q901	F-4
LED900	B-2
		Q902	E-4
LED901	C-2

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