Komatsu 830E-AC Shop Manual page 440

MEMORY BACKUP BATTERY
REPLACEMENT
The replaceable memory backup battery on the CPU
cards will require replacement if voltage is low when
performing the CPU Battery Checks or if, during truck
operation, an event code appears on the DID panel
display as follows:
Event Number 095 (BBRAM Battery Low)
Event Number 633 (BBRAM Battery Failure)
To replace the battery on either card:
1. With control power OFF, remove the appropriate
card and locate the green plate with the battery
near the card edge. (See Figure 3-3.)
2. Have a replacement
immediate installation. See your truck's Parts
Book for the correct battery part number.
NOTE: To prevent data loss, the new battery must be
installed within five minutes of removal of the old
battery.
3. Remove both screws (2) and (4) that retain
battery assembly (3) to the mounting bocks. Note
the arrow direction (polarity) on the green plate
before removal.
4. Remove the old battery and install the new
battery. Make sure that it is positioned for proper
polarity. Reinstall the screws.
5. Install the card in the appropriate panel slot.
FIGURE 3-2. BATTERY LOCATION
(PSC Panel Shown
1. PSC CPU Card
2. Positive (+) Screw
3. Battery Assembly
E3-10
battery available for
4. Negative (-) Screw
5. Panel Enclosure
AC Drive System Electrical Checkout Procedure
(Version 21 Software)
TCI PROGRAMMING
Make sure that the link voltage is drained down
before servicing the
performing tests.
1. 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.
2. Make sure that the directional control lever is in
PARK and the rest switch is in the REST position.
3. Turn control power switch (1, Figure 3-1) and the
key switch ON.
To program the TCI CPU card:
Click START > Programs > GEOHVPTU_2.0 >
AC TOOLS > wPTU AC v21.01
Select "Normal" mode {enter}
Type password "ok75e" {enter}
Click "Program Panel".
Select the GE Panel to download.
To select the Configuration File, click "Browse",
then "Up One Level", then select the file that
matches your truck's wheels.
Click "Open".
Click "Begin Download".
After the download is complete, click "Exit" when
you see "Press exit to continue".
propulsion system or
10/06 E03018