Johnson & Johnson ETHICON ENDO-SURGERY HARMONIC 300, Service Manual

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47
GEN04
Chapter 12 - Hardware Troubleshooting
Procedures
The following sections contain flowcharts that outline procedures to help determine whether the problem that is
occurring is due to a high-level component failure or a failure associated with the Generator Board. Before executing
any of these procedures, remove the Generator’s cover, attach a known good instrument or test tip and power the unit
up. Note: All specifications are +/-10% unless otherwise specified.
Hand Piece Assembly Receptacle Continuity Test
1
Power down the unit and remove the power cord.
2 Disconnect the wire harnesses from connectors J3 and J4.
3 Measuring between the Hand Piece Receptacle on the front panel and the Generator Board wire
harness connectors, test the continuity of each of the wires according to the pinout table below
(use Figure 12-4 as a reference):
PCB Connector Connector Wire Receptacle Pin
J3 Red 1
Yellow 2
Orange 3
Green 4
J4 Brown 5
Black 6
Blue 7
4 If any of the wires measure as “open”, replace the Hand Piece Receptacle
Assembly.
5 Upon visual inspection, if any receptacle pins appear worn, corroded, or loose, replace the Hand Piece Receptacle
Assembly.
Fig. 12-4 Pinout Table