GE GA000100, Service Manual

Page: 169 / 802

GE H
EALTHCARE
D
IRECTION
GA091568, R
EVISION
5 VIVID E9 S
ERVICE
M
ANUAL
Chapter 4 - General procedures and Functional checks 4 - 33
4-2-9-4 Preparations
To get access to the trackball for cleaning, you must perform the following steps:
1.) Power down the system.
2.) Disconnect the mains power cable from the wall outlet.
3.) Disconnect all probes and external I/O cabling.
4.) Remove the Operator Panel, Upper
5.) Remove the Operator Panel, Lower and place it on a clean surface with the front down.
Follow these links if you need more information:
• 4-2-2 "Power shut down" on page 4-8.
• 8-6-7-2 "Remove the Upper OP Panel/Touch Panel Assembly" on page 8-99.
• 8-6-16-2 "Remove the Operator Panel, Lower" on page 8-125.
CAUTION
ENERGY CONTROL AND POWER LOCKOUT FOR VIVID E9.
WHEN SERVICING PARTS OF THE SYSTEM WHERE THERE IS EXPOSURE TO VOLTAGE
GREATER THAN 30 VOLTS:
1. TURN OFF THE BREAKER.
2. UNPLUG THE SYSTEM.
3. MAINTAIN CONTROL OF THE SYSTEM POWER PLUG.
4. WAIT FOR AT LEAST 20 SECONDS FOR CAPACITORS TO DISCHARGE AS THERE ARE NO
TEST POINTS TO VERIFY ISOLATION.
Beware that the Main Power Supply and Back End Processor may be energized even if the
power is turned off when the cord is still plugged into the AC Outlet.
WARNING WARNING
DO NOT TOUCH ANY BOARDS WITH INTEGRATED CIRCUITS PRIOR TO TAKING THE
NECESSARY ESD PRECAUTIONS.
1. ALWAYS CONNECT YOURSELF, VIA AN ARM-WRIST STRAP, TO THE ADVISED
ESD CONNECTION POINT LOCATED ON THE REAR OF THE SCANNER (NEAR THE
POWER CONNECTOR).
2. FOLLOW GENERAL GUIDELINES FOR HANDLING OF ELECTROSTATIC SENSITIVE
EQUIPMENT.
Signed Date
TAG
&
LOCKOUT