REV C
Section 4 • Repair Procedures
June 2005
4 - 22
TMZ-34/19
Part No. 52075
5-3
Connector Circuit Board
The connector circuit board connects the wire
harness to the CPU circuit board using several
cables. From serial number T3498-001 to
T3499-769, the connector circuit board is equipped
with a replaceable 5 amp fuse.
How to Remove
the Connector Circuit Board
1 Disconnect the battery pack from the machine.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
2 Tag and disconnect the wire harness
connectors from the ground control box.
3 Remove the four lid retaining fasteners from the
ground control box. Open the lid.
4 Tag and disconnect all wiring from the
connector circuit board.
Component damage hazard.
Electrostatic discharge (ESD) can
damage printed circuit board
components. Maintain firm contact
with a metal part of the machine
that is grounded at all times when
handling printed circuit boards OR
use a grounded wrist strap.
5 Remove the connector circuit board mounting
fasteners and remove the connector circuit
board.
5-2
CPU Circuit Board
The CPU circuit board controls all machine
functions.
How to Remove
the CPU Circuit Board
1 Disconnect the battery pack from the machine.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
2 Remove the four lid retaining fasteners from the
ground control box. Open the lid.
3 Tag and disconnect all wiring from the CPU
circuit board.
Component damage hazard.
Electrostatic discharge (ESD) can
damage printed circuit board
components. Maintain firm contact
with a metal part of the machine
that is grounded at all times when
handling printed circuit boards OR
use a grounded wrist strap.
4 Remove the CPU circuit board mounting
fasteners and remove the CPU circuit board.
GROUND CONTROLS
