Manitowoc Published 10-01-2012, Control # 045-08 3-5
777 SERVICE MANUAL ELECTRIC SYSTEM
3
B-04 89ZA DI-4 Left Side Counterweight Limit 12 VDC Nominal I/O 1 J6-10
B-05 89ZB DI-5 Right Side Counterweight Limit 12 VDC Nominal I/O 1 J6-11
B-06 89W DI-6 Block Up Limit 10 VDC Nominal I/O 1 J6-12
B-07 89U DI-7 Rear Drum Maximum Bail Limit 12 VDC Nominal I/O 1 J6-13
B-08 89S DI-8 Rear Drum Minimum Bail Limit 12 VDC Nominal I/O 1 J6-14
B-09 89S2 DI-9 Crane Mode Select 12 VDC Nominal I/O 1 J6-15
B-10 89T2 DI-10 Crane Mode Confirm 12 VDC Nominal I/O 1 J6-16
B-11 89ZZ DI-11 Maximum Boom/Luffing Angle Limit Bypass 12 VDC Nominal I/O 1 J6-17
B-12 89R DI-12 Boom Maximum Up Limit 12 VDC Nominal I/O 1 J6-18
B-13 89Q DI-13 Boom Maximum Down Limit 12 VDC Nominal I/O 1 J6-19
B-14 89W1 DI-14 Luffing Jib Maximum Up Limit 10 VDC Nominal I/O 1 J6-20
B-15 89S1 DI-15 Luffing Jib Maximum Down Limit 10 VDC Nominal I/O 2 J8-07
B-16 89R3 DI-16 Hydraulic Fluid Level 0 VDC Low Level; 12 VDC High Level I/O 2 J8-08
B-17 89S3 DI-17 Hydraulic Fluid Temperature 0 VDC above 180°F; 12 VDC below 180°FI/O 2 J8-09
B-18 89T3 DI-18 Engine Oil Pressure 8 PSI (switch on) I/O 2 J8-10
B-19 89U3 DI-19 Engine Coolant Temperature 0 VDC below 210°F; 12 VDC above 210°F I/O 2 J8-11
B-20 89ZD DI-20 Left Front Drum Clutch Switch 12 VDC Nominal I/O 2 J8-12
B-21 89X2 DI-21 Rear Drum Free Fall Enable 12 VDC Nominal I/O 2 J8-13
B-22 89ZE DI-22 Right Front Drum Clutch Switch 12 VDC Nominal I/O 2 J8-14
B-23 89M DI-23 Front Drum Free Fall Enable 12 VDC Nominal I/O 2 J8-15
B-24 89P DI-24 Rated Capacity Indicator/Limiter 12 VDC Nominal I/O 2 J8-16
B-25 89L DI-25 Limit Bypass 12 VDC Nominal I/O 2 J8-17
B-26 89J DI-26 Display Scroll Up 12 VDC Nominal I/O 2 J8-18
B-27 89ZF DI-27 Set-up Remote Boom Up 12 VDC Nominal I/O 2 J8-19
B-28 89ZG DI-28 Set-up Remote Boom Down 12 VDC Nominal I/O 2 J8-20
B-29 89L3 DI-29 Front Drum Pawl In 12 VDC Nominal I/O 3 J10-07
B-30 89M3 DI-30 Rear Drum Pawl In 12 VDC Nominal I/O 3 J10-08
B-31 89ZH DI-31 Left Rear Drum Clutch Switch 12 VDC Nominal I/O 3 J10-09
B-32 89T1 DI-32 Auxiliary Drum Pawl In 12 VDC Nominal I/O 3 J10-10
B-33 89K DI-33 Display Scroll Down 12 VDC Nominal I/O 3 J10-11
B-34 89Q3 DI-34 Seat Switch 12 VDC Nominal I/O 3 J10-12
B-35 89L1 DI-35 High Speed Travel Switch 12 VDC Nominal I/O 3 J10-13
B-36 89ZJ DI-36 Right Rear Drum Clutch Switch 12 VDC Nominal I/O 3 J10-14
B-37 NC Key Receptacle Insert 12 VDC Nominal
C-01 8P1 — 12 VDC System 12 VDC Nominal
C-02 0 — System Ground 0 VDC
C-03 8P1 — 12 VDC System 12 VDC Nominal
C-04 0 — System Ground 0 VDC
C-05 80A AO-S1 Front Drum Pump Control (Servo Driver 1)
0 to 2.8 ± 10% (110 Ma ± 10%) VDC Up;
0 to -2.8 ± 10% (-110 Ma ± 10%) VDC Down
I/O 1 J6-41
C-06 81A AO-S2 Rear Drum Pump Control (Servo Driver 2)
0 to 2.8 ± 10% (110 Ma ± 10%) VDC Up;
0 to -2.8 ± 10% (-110 Ma ± 10%) VDC Down
I/O 1 J6-42
C-07 80E DO-1 Front Drum Band Brake 12 VDC Nominal I/O 1 J6-21-22
C-08 81E DO-2 Rear Drum Band Brake 12 VDC Nominal I/O 1 J6-23-24
C-09 82EU DO-3 Boom Up Enable 12 VDC Nominal I/O 1 J6-25-26
C-10 84E DO-4 Travel Parking Brake 12 VDC Nominal I/O 1 J6-27-28
C-11 82ED DO-5 Boom Down Enable 12 VDC Nominal I/O 1 J6-29-30
C-12 8P1 — 12 VDC System 12 VDC Nominal
C-13 0 — System Ground 0 VDC
Pin # Wire # I/O # Description
Test Voltage
(DC unless otherwise specified)
Connection
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