Circuit Diagrams - Epson Perfection 1670 Photo Service Manual

EPSON Perfection 1670 Photo/Perfection 1270
panel
A
SW1
1
R9 0
BUTTON1
3
SW2
4
1
R10 0
BUTTON2
3
SW3
1
R11 0
BUTTON3
3
SW4
1
3
R12 0
BUTTON4
3
VCC
7102-XX
R8 0
9
8
7
6
2
5
4
3
2
1
J1
C6 C1 C2 C3
0.01U M 47P 47P 47P
1
A
APPENDIX
B
4
2
4
2
4
2
4
2
VCC
HOMESENSOR
VCC
BUTTON4
BUTTON3
BUTTON2
BUTTON1
D1
C5
C4
5.6V
47P
47P
B
C
VCC
R3
10K
R4
10K
Q1 Q2
1 1
2N3904 2N3904
C

Circuit Diagrams

D E
VCC VCC
R6 R5
2K
150
U1
LTH-301-07
HOMESENSOR
R7
10K
VCCVCC
R2 R1
150
150
LED2
GREEN/RED
D E
Revision B
4
3
2
1
45