Manitowoc Published 10-01-2012, Control # 045-08 3-9
777 SERVICE MANUAL ELECTRIC SYSTEM
3
Wire Identification
Wire # Pin # I/O # Description
Test Voltage
(DC unless otherwise specified)
Connection
A-10 AI-8 Spare I/O 1 J5-64
A-11 — Shield
A-29 AI-26 Spare CPU J3-52
A-30 AI-27 Spare CPU J3-54
A-31 AI-28 Spare I/O 3 J9-50
A-32 AI-29 Spare I/O 3 J9-52
A-33 AI-30 Spare I/O 3 J9-54
C-26 DO-12 Spare I/O 2 J8-23-24
C-32 DO-16 Spare I/O 2 J8-31-32
D-05 ECA3 Spare Encoder Channel A3 I/O 2 J8-01
D-06 ECB3 Spare Encoder Channel B3 I/O 2 J8-02
D-26 DO-21 Spare I/O 3 J10-23
D-32 DO-27 Spare I/O 3 J10-33-34
D-33 DO-28 Spare I/O 3 J10-35-36
D-34 DO-29 Spare I/O 3 J10-37-38
D-35 DO-30 Spare I/O 3 J10-39-40
D-36 DO-31 Spare I/O 4 J12-21-22
D-37 DO-32 Spare I/O 4 J12-23-24
E-10 AI-38 Spare I/O 2 J9-60
E-11 AI-39 Spare I/O 2 J9-62
E-12 AI-40 Spare I/O 2 J9-64
E-19 DI-51 Spare I/O 4 J12-15
E-29 AO-3 Spare I/O 3 J10-06
E-33 DO-33 Spare I/O 4 J12-25-26
E-34 DO-34 Spare I/O 4 J12-27-28
E-35 DO-35 Spare I/O 4 J12-29-30
MAG
PU2
E-07 MP2 Spare Magnetic Pick-Up I/O 2 J8-05
NC B-37 Key Receptacle Insert 12 VDC Nominal
NC C-37 Key Cable Plug Insert
NC D-23 Key Cable Plug Insert Keyhole
NC E-31 — Computer 12 VDC
NC E-32 — Computer Ground
RX1 D-16 — RS-232 Receptacle (Receive I/O) CPU J4-02
RX3 D-21 —
2
nd
Computer (Receive I/O)
CPU J4-10
TX1 D-17 — RS-232 Receptacle (Transmit I/O) CPU J4-01
TX2 D-19 — Display - White (Input) Approximately 2.5 VDC CPU J4-05
TX3 D-22 —
2
nd
Computer (Transmit I/O)
CPU J4-09
0 C-02 — System Ground 0 VDC
0 C-04 — System Ground 0 VDC
0 C-13 — System Ground 0 VDC
0 C-22 — System Ground 0 VDC
0 C-31 — System Ground 0 VDC
TX1-0 D-18 — RS-232 Receptacle (Common I/O) CPU J4-03-04
TX2-0 D-20 — Display - Black (Common) CPU J4-07-08
SIG 1 A-34 AI-31 Load Cell 1 0 to10 VDC Nominal CPU J3-56
SIG 2 A-35 AI-32 Load Cell 2 0 to10 VDC Nominal CPU J3-58
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