42
&
Service Manual
• Parts side of KEY PCB
000
451-373
TUBE/60'COMBO
CONDENSER
/US MET
AL
DYNAMIC
/BRIT
ST
ACK
D
BC
A
ROOM
HALL
PLA
T
E
D
ELA
Y
T
O
STEREO BUSS
INPUT
EQ
PEAK A
PEAK D
PEAK C
PEAK B
STEREO BUSS
LEVEL
REVERB
/DELA
Y
TIME
ST
ORE
UNDO/REDO
TIME BASE SEL
POWERFUL
15/16 W
A
V FILE
BRIGHT
BOUNCE
NA
TURAL
RHYTHM GUIDE
CONTRAST
DIRECT
LOCA
TE
RECORD
REWIND
F FWD
PLA
Y
ST
OP
PLA
Y
MODE
B/OUT
A/IN
AUT
O
PUNCH
6
5
4
3
2
1
78
13/14
15/16
9/10
11
/1
2
MASTER
EFFECT
PA
N
SEND
REC SEL
POWER
451373
PCB,KEY
,MR-16HD
LF
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
C36
C37
C38
C39
C40
C41
C42
C43
C44
C45
C46
C47
C48
C49
C50
C51
C52
C53
C
54
C55
C56
C57
C58
C59
C60
C61
C62
C63
C64
C65
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D1
1
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D33
D34
D35
D36
D37
D38
D39
D40
D41
D42
D43
D44
D45
D46
D47
D48
D49
D50
D51
D52
D53
D54
D55
D56
G
R
D57
G
R
D58
G
R
D59
G
R
D60
1
2
29
30
17
1
16
2
J3
35
1
Q1
Q2
Q3 Q4
Q5
Q6
Q7
Q8
R1
R2
R3
R4
R5
R6
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
1
R45
1
R46
1
R47
1
R48
1
R49
1
R50
1
R51
1
R52
1
R53
1
R54
1
R55
1
R56
1
R57
1
R58
1
R59
1
R60
R61
R62
R63
R64
R65
R66
R67
R68
1
R69
R70
1
R71
R72
R73
R74
R75
S1
S2
S3
S4
S5
S6
S7
1A
2B
3C
S21
S9
S10
S
11
S12
S
13
S14
S
15
S16
S17
S
18
S19
S
20
S22
S
23
S24
S25
S
26
S27
S8
S33
S34
S35
S36
S37
S
38
S39
S
40
S41
S
42
S43
S
44
S45
S
46
S47
S48
S49
S50
S51
S52
S53
S54
9
1
U1
1
11
U2
1
11
U3
1
11
U4
1
11
U5
8
1
U6
1
U7
1
U8
1
U9
1
U10
1
U11
1
U12
1
U13
1
U14
9
1
U15
9
1
U16
9
1
U17
9
1
U18
W1
W2