ER-ADSR-555-01 Rev 3 Assembly Sheet

Parts List

• Note R4 silkscreen is wrong, s/b 1M

Find	Qty	Ref Des	Part Number		Find	Qty	Ref Des	Part Number
1	3	R1, R6, R12, R13	10K (NOTE)		11	3	Q1-Q3	2N3904
2	1	R2	22K		11	1	DS1	LED, 5MM
3	4	R3, R5, R7, R10	4.7K		12	3	RV1, RV2, RV4	A1M
4	1	R4	1M		13	1	RV3	B10K
5	3	R8, R9, R11	100		14	1	U1	TL072
6	5	D1-D5	1N4148		15	1	U2	LM555N
7	1	C1	10nF		16	1	J1	Conn_02x05
8	1	C2	10uF		17	2	J2, J3	PJ-301BM
9	1	C3	1uF
10	3	C4-C6	0.1uF

Notes

Master Timing Cap

• Installed C2 (10uF) in machined contact pins

Decay Fix

• Decay fix details
• 3.3K Resistor on rear of card
  • Could be installed on top of card into the same holes and vertical