C1
B4
A2
C2
B3
B2
C3
D3
B2
C4
D2
C2
C7
E3
B3
C8
E3
A3
C9
F4
A4
C10
F3
B4
C11
D4
A3
C12
E4
A3
C13
D4
B3
C14
E4
C3
C15
F4
B3
C16
F4
B3
C17
E4
A3
C18
E4
B3
C19
D4
C2
C20
D4
B2
C21
D3
B3
C22
D2
C3
C23
G4
A4
C24
F4
A4
C25
G4
B4
C189
F3
C4
C202
B4
A2
C203
B2
C2
C204
C3
B3
C218
A4
J2
C219
B4
G2
C220
B4
E2
C221
B4
C2
C226
G3
B5
C227
G4
B4
C239
G4
B4
C250
F3
B4
C251
F4
A4
CR1
C3
B3
CR2
C4
A3
CR5
E3
C4
CR6
E3
A4
CR7
B3
B2
CR8
H4
A4
CR9
H3
A5
CR53
F3
C4
CR68
E3
C4
CR69
E4
B4
J1
A3
A1
J2
A3
A1
J3
A3
C1
K1
B3
B1
P1
E5
K1
Q1
C3
C2
Q2
C3
A2
Q3
E4
A3
Q4
E3
C3
Q5
D3
B3
Q6
D4
A3
R1
C3
A2
R2
C3
C2
R3
C4
A2
R4
C4
A2
R5
C3
B2
R6
C2
C2
R7
C3
A2
R8
E2
B3
R9
D2
B3
R10
E2
C3
R11
D3
B3
R12
E3
C3
R13
E3
A3
R14
D3
A3
R15
D3
A3
R16
E3
A3
R17
E4
A3
R18
E4
A4
R19
E3
B4
R20
F4
A4
R21
F3
B4
R22
B4
A2
R23
B3
B2
R24
C3
B2
R25
D3
A3
R26
D3
A3
R27
E3
C3
R28
E4
B3
R29
D2
B3
R30
D2
B3
R31
C3
A3
R32
D3
B3
R33
F4
A4
R37
F3
B4
R39
G2
B5
R40
G2
B5
R41
G3
B4
R42
G3
B4
R43
H3
F5
R44
H2
F5
R45
F3
C4
R46
G4
B4
R47
G3
C4
R48
G3
B5
R49
G3
C4
R301
C3
B2
R302
C3
A2
TP1
E3
B4
U1A
F3
B4
U1B
F3
B4
U2A
G3
B4
U2B
G4
B4
Main Board Schematic Diagram <3>
Component Locator Chart
ECO 422
A2 Main Board. Partial A2 also shown on Schematics 1, 2, 4, and 5.
Summary of Contents for ECO 422
Page 4: ......
Page 6: ......
Page 14: ...General Safety Summary viii ECO 422 ...
Page 16: ...Service Safety Summary x ECO 422 ...
Page 17: ...Getting Started ...
Page 18: ......
Page 31: ...Operating Basics ...
Page 32: ......
Page 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Page 43: ...Specifications ...
Page 44: ......
Page 52: ......
Page 53: ...Theory of Operation ...
Page 54: ......
Page 62: ...Theory of Operation 4 8 ECO 422 ...
Page 63: ...Performance Verification ...
Page 64: ......
Page 84: ...Performance Verification 5 20 ECO 422 ...
Page 85: ...Adjustment Procedure ...
Page 86: ......
Page 88: ...Adjustment Procedure 6 2 ECO 422 ...
Page 89: ...Maintenance ...
Page 90: ......
Page 101: ...Options ...
Page 102: ......
Page 104: ...Options 8 2 ECO 422 ...
Page 105: ...Replaceable Electrical Parts ...
Page 106: ......
Page 140: ...Replaceable Electrical Parts 9 34 ECO 422 ...
Page 141: ...Diagrams Circuit Board Illustrations ...
Page 142: ......
Page 145: ......
Page 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
Page 148: ...ECO 422 ...
Page 166: ...ECO 422 ...
Page 167: ...Replaceable Mechanical Parts ...
Page 168: ......
Page 174: ...Replaceable Mechanical Parts 11 6 ECO 422 ...
Page 175: ......
Page 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
Page 177: ......