Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
ELECTRICAL SYSTEM MLC165-1 SERVICE/MAINTENANCE MANUAL
3-16
Published 05-26-17, Control # 238-02
Checking Electrical Inputs/Outputs (Using
the Test Board)
Troubleshoot components on the main display, system
diagnostic screen first. Perform additional testing with the
Electrical Test Kit at universal nodes or Manitowoc Unit
Tester at all nodes. The Electrical Test Kit or Manitowoc Unit
Tester can be ordered from your Manitowoc dealer.
The breakout test kit provides a breakout of the node signals
to easily probed terminal connections. Each node connector
(2) Figure 3-20 on page 3-16
is keyed uniquely and requires
a matching keyed test board assembly (3) from the Electrical
Test Kit.
The output terminals of the electrical test board assembly (3)
are labeled A through V, corresponding to node connector
(2) pin numbers.
I/O node and pin numbers are contained in the Test Volt
tables.
To probe a fault at a universal node with the Electrical Test
Kit:
1. Shutdown the engine and turn the engine key switch to
off.
2. Determine which signal contains the suspected fault.
3. Disconnect the node cable (1) from the node connector
(2) containing the signal of the suspected fault.
4. Connect the electrical test board assembly (3) between
the node connector (2) and disconnected node cable
(1).
5. Turn the engine key switch to on and activate the
suspected fault.
6. Use a multimeter (4) and needle test probes (5) to probe
signals at the test board assembly (3) as needed in
conjunction with toggling node outputs.
Figure 3-20. Test Board Setup
M100824
Item Description
1 Node Cable
2 Node Connector
3 Test Board Assembly
4 Multimeter
5 Needle Test Probes

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English