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M2500

CIRCUIT BOARDS

CONTENTS MASOUT1 Circuit Board ...................................... 34 MASOUT2 Circuit Board ....................................... 35 MASOUT3 Circuit Board ....................................... 36 METER1 Circuit Board ......................................... 37 METER2 Circuit Board ......................................... 37 METER3 Circuit Board ......................................... 37 CTRL 1/5 Circuit Board ........................................ 38 CTRL 2/5 Circuit Board ........................................ 38 CTRL 3/5 Circuit Board ........................................ 38 CTRL 4/5 Circuit Board ........................................ 38 CTRL 5/5 Circuit Board ........................................ 38 IN1 Circuit Board .................................................. 40 IN2 Circuit Board .................................................. 42 IN3 Circuit Board .................................................. 44 IN4 Circuit Board .................................................. 46 IN JK Circuit Board ............................................... 47 IN PAN Circuit Board ............................................ 47 ISRT 1/6 Circuit Board .......................................... 48 ISRT 2/6 Circuit Board .......................................... 49 ISRT 3/6 Circuit Board .......................................... 49 ISRT 4/6 Circuit Board .......................................... 48 ISRT 5/6 Circuit Board .......................................... 48 ISRT 6/6 Circuit Board .......................................... 48 MAS1 1/2 Circuit Board ........................................ 48 MAS1 2/2 Circuit Board ........................................ 48 MAS2 1/2 Circuit Board ........................................ 52 MAS2 2/2 Circuit Board ........................................ 52 MAS3 1/2 Circuit Board ........................................ 54 MAS3 2/2 Circuit Board ........................................ 54 MAS4 Circuit Board .............................................. 56 MAS PAN Circuit Board ........................................ 56 ST1 Circuit Board ................................................. 57 ST2 Circuit Board ................................................. 58 ST3 Circuit Board ................................................. 59 ST4 Circuit Board ................................................. 60 STJK 1/2 Circuit Board ......................................... 60 STJK 2/2 Circuit Board ......................................... 60

Note : See parts list for details of circuit board component parts.

33

M2500

MASOUT1 Circuit Board

to METER1 -CN104

MATRIX OUT (5, 1) AUX/GRP OUT (A11/G6, A7/G1) GRP/AUX OUT (G5/A11, G1/A7) AUX OUT (3)

CN321: (AUX OUT 326) MAS2-CN205 (AUX/GRP OUT A7/G1~A10/G4) MAS2-CN206 (AUX/GRP OUT A11/G5~A14/G8) MAS2-CN207 (GRP/AUX OUT G1/A7~G4/A10) MAS3-CN308 (GRP/AUX OUT G5/A11~G8/A14) MAS3-CN309 (MATRIX OUT 1~4) MAS1-CN101 (MATRIX OUT 5~8) MAS1-CN102

MATRIX OUT (6, 2) AUX/GRP OUT (A12/G6, A8/G2) GRP/AUX OUT (G6/A12, G2/A8) AUX OUT (4)

MATRIX OUT (7, 3) AUX/GRP OUT (A13/G7, A9/G3) GRP/AUX OUT (G7/A13, G3/A9) AUX OUT (5)

MATRIX OUT (8, 4) AUX/GRP OUT (A14/G8, A10/G4) GRP/AUX OUT (G8/A14, G4/A10) AUX OUT (6)

Component side

Pattern side
MASOUT1 : 3NA-V230710
1

34

M2500

MASOUT2 Circuit Board
AUX OUT 1 to MAS2 -CN204

AUX OUT 2

Component side

Pattern side
MASOUT2 : 3NA-V230710
1

35

M2500

MASOUT3 Circuit Board
MONITOR OUT (L) ST OUT (L) to METER 2-1, 2-2-CN104 to MAS3-CN310 (ST OUT) to MAS3-CN321 (MON1)

MONITOR OUT (MONO/C) ST OUT (MONO/C)

MONITOR OUT (R) ST OUT (R)

Component side

Pattern side
MASOUT3 : 3NA-V431500

36

M2500

METER1 Circuit Board

to METER

to MASOUT1 MASOUT2-CN331

to GOOSE NECK

to INSERT to METER

Pattern side

Component side METER2-1 Circuit Board

to METER NC

to MASOUT3 -CN331

to ISRT to GOOSE & METER NECK

Pattern side Component side

METER2-2 Circuit Board

to METER NC
METER1: 3NA-V431480 METER2-1: 3NA-V431490 METER2-2: 3NA-V431490
2 1 1

to MASOUT3 -CN331

to ISRT to GOOSE & METER & NECK

Component side

Pattern side

37