Komatsu 830E-AC Shop Manual page 460

4. Make sure that the directional control lever is in
PARK and the rest switch is in the REST position.
5. Turn control power switch (1, Figure 3-1) and the
key switch ON.
6. Connect the serial communication cable from the
PTU to the TCI port (DIAG3) on the DID panel
located on the back wall of the operator cab.
Click START > Programs > GEOHVPTU_2.0 >
AC TOOLS > wPTU AC v21.01
Select "Normal" mode {enter}
Type password "ok75e" {enter}
Click "LOGIN to wPTU Toolbox".
Under "Real Time", double-click "TCI Real Time
Data".
Verify that the analog values and highlighted
functions are similar to the TCI Real Time Data
screen in Figure 3-15.
7. Exit the TCI Real Time Data screen. Leave the
engine running and the PTU connected to the TCI
port for the loadbox test.
E3-30
FIGURE 3-14. PSC ANALOG INPUTS SCREEN
AC Drive System Electrical Checkout Procedure
(Version 21 Software)
Loadbox Test
Verify that the control cabinet doors are closed and
locked before performing the following tests.
DANGEROUS VOLTAGES ARE PRESENT INSIDE
THE CONTROL CABINET WHEN THE ENGINE IS
RUNNING.
1. Jumper fan clutch control circuit 22FO @ TB32 to
ground to lock the fan in full on condition.
2. With the engine running, move the GF cutout
switch to the NORMAL (up) position.
3. Turn the rest switch OFF.
Under "Test", double-click "Self Load Engine
Test".
Click "Enter LDBX".
Verify that the values are similar to the initial Self
Load Engine Test screen in Figure 3-16.
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