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DISPLAY /STBY PSHBTN/MUTE PSHBTN/L MTR/R MTR
6
7
8
9
10
J1:1
1
J1:2
1
J2:1
1
J2:2
1
L MET -
J3:18
LMET-
5
L MET +
J3:19
LMET+
5
R MET -
J3:4
RMET-
5
R MET +
J3:3
RMET+
5
FR IR
J3:8
FR IR
5
INP B
J3:22
INP B
5
INP A
J3:23
INP A
5
CAR B
J3:1
CAR B
5
CAR A
J3:2
CAR A
5
VFD CS
J3:11
5
VFD CS
VFD CL
J3:10
5
VFD CL
3.3V
NO PUSH
2.2V
MUTE
VFD DA
J3:12
VFD DA
5
1.17V
CARTRIDGE KNOB
0V
INPUT KNOB
PB DET
J3:5
PB DET
5
MET LTS
J3:20
5
MET L TS
PAN LTS
J3:21
5
PAN LTS
FP RST
J3:6
FP RST
5
+5VFD
J3:13
5
+5VFD
J3:14
+3.3VBU
J3:9
5
+3.3VBU
GND
J3:15
2
5
DGND
STBY
J3:7
STBY
5
RXD
J3:16
2
5
FR ONT TXD
5
J13
1
TXD
J3:17
FRONT RXD
5
51
INP UT
4
5
IR1
OUT
Vs
GND
+3.3VBU
S1
R2
150
C1
C2
10µF
.1µF
+3.3VBU
U1
Vcc
4
GND
R3
6.81k
MP1
DS1
RING
FROM EXT DB9 - 3 (TXD)
TIP
TO EXT DB9 - 2 (RXD)
GND
EXT DB9 - 5 (GND)
CA RT RIDGE
6
4
6
7
5
7
S2
R4
475k
1
2
+3.3VBU
D1
R5
150
C4
.1µF
C3
10µF
+3.3VBU
U2
1
Vcc
4
2
GND
751912 SCH 2 OF 2
6
DISPLAY
J4:2
MUTE PB
8
6
J4:4
J4:8
8
6
J4:6
+3.3VBU
R8
2.74k
R6
12.1k
J5:2
STBY PB
7
6
J5:4
J5:8
7
6
J5:6
52
8
MUTE PUSHBUTTON
J6:5
J6:7
S3
MUTE
J6:1
J6:3
J7:5
J7:7
STANDBY/ON
J7:1
J7:3
7
STBY PUSHBUTTON
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