Manitowoc 777 Service And Maintenance Manual

Reference Only
Manitowoc Published 10-01-2012, Control # 045-08 3-7
777 SERVICE MANUAL ELECTRIC SYSTEM
3
D-19 TX2 — Display - White (Input) Approximately 2.5 VDC CPU J4-05
D-20 TX2-0 — Display - Black (Common) CPU J4-07-08
D-21 RX3 — 2nd Computer (Receive I/O) CPU J4-10
D-22 TX3 — 2nd Computer (Transmit I/O) CPU J4-09
D-23 NC Key Cable Plug Insert Keyhole
D-24 80S AO-1
Front Drum Motor Control Right and Left
Side
0 VDC Up to 1/3 Handle Movement;
0.96 to 2.19 VDC 1/3 to Full Handle Movement
I/O 1 J6-06
D-25 81S AO-2
Rear Drum Motor Control Right and Left
Side
0 VDC Up to 1/3 Handle Movement;
0.96 to 2.19 VDC 1/3 to Full Handle Movement
I/O 2 J8-06
D-26 DO-21 Spare I/O 3 J10-23
D-27 80N DO-22 Front Drum Rotation Indicator 12 VDC Nominal I/O 3 J10-23-24
D-28 81N DO-23 Rear Drum Rotation Indicator 12 VDC Nominal I/O 3 J10-25-26
D-29 82N DO-24 Boom Cylinder Up/Down Indicator 12 VDC Nominal I/O 3 J10-27-28
D-30 87N DO-25 Auxiliary Drum Rotation Indicator 12 VDC Nominal I/O 3 J10-29-30
D-31 88R DO-26 Track Motor (2-Speed) 12 VDC Nominal I/O 3 J10-31-32
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-01 87MA ECA4 Auxiliary Drum Speed Encoder Channel A4 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 2 J8-03
E-02 87MB ECB4 Aux. Drum Direction Encoder Channel B4 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 2 J8-04
E-03 80MARS ECA5
Right Front Drum Shaft Speed Encoder
Channel A5
7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-01
E-04 80MBRS ECB5
Right Front Drum Shaft Direction Encoder
Channel B5
7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-02
E-05 81MARS ECA6
Right Rear Drum Shaft Speed Encoder
Channel A6
7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-03
E-06 81MBRS ECB6
Right Rear Drum Shaft Direction Encoder
Channel B6
7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 3 J10-04
E-07
MAG
PU2
MP2 Spare Magnetic Pick-Up I/O 2 J8-05
E-08 83Q AI-36 Travel Pressure Right Track 1.2 VDC at 300 PSI; 1 VDC at No Pressure I/O 2 J9-56
E-09 84Q AI-37 Travel Pressure Left Track 1.2 VDC at 300 PSI; 1 VDC at No Pressure I/O 2 J9-58
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-13 89D4 DI-45 Hydraulic Filter Alarm 1 12 VDC Nominal (when filter bypassing) I/O 4 J12-09
E-14 89E4 DI-46 Hydraulic Filter Alarm 2 12 VDC Nominal (when filter bypassing) I/O 4 J12-10
E-15 89F4 DI-47 Hydraulic Filter Alarm 3 12 VDC Nominal (when filter bypassing) I/O 4 J12-11
E-16 89G4 DI-48 Hydraulic Filter Alarm 4 12 VDC Nominal (when filter bypassing) I/O 4 J12-12
E-17 89H4 DI-49 Hydraulic Filter Alarm 5 12 VDC Nominal (when strainer is clean) I/O 4 J12-13
E-18 89ZK DI-50 Boom Cylinder Hold 12 VDC Nominal I/O 4 J12-14
E-19 DI-51 Spare I/O 4 J12-15
E-20 82MARS DI-52 Boom Right Cylinder Encoder Channel A7 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 4 J12-16
E-21 82MBRS DI-53 Boom Right Cylinder Encoder Channel B7 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 4 J12-17
E-22 82MALS DI-54 Boom Left Cylinder Encoder Channel A8 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 4 J12-18
E-23 82MBLS DI-55 Boom Left Cylinder Encoder Channel B8 7.5 VDC Plus or 0 VDC Not Moving; 3.5 VDC Moving I/O 4 J12-19
E-24 89Z4 DI-56 Hydraulic Filter Alarm 6 12 VDC Nominal (when filter is bypassing) I/O 4 J12-20
Pin # Wire # I/O # Description
Test Voltage
(DC unless otherwise specified)
Connection

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English