4–16 Component Test Procedures
Publication 1336 IMPACT-6.8 – November, 2002
The Thermistor and Thermostat are wired in series on a harness
connected to the Control Board.
Figure 4.9
Thermistor
Thermistor
To Control
Board J1
Inverter Bay w/o Cabinet
AB1095
Main Heat Sink
To Thermostat
(SCR Heat Sink)
SCR Heat Sink
Control Board
J1
!
ATTENTION: Wear a wrist-type grounding strap
when servicing 1336 IMPACT drives. Failure to
protect drive components against ESD may damage
drive components. Refer to Electrostatic Discharge
Precautions in Chapter 3, Access Procedures.
1. Referring to Opening the Drive Enclosure in Chapter 3, Access
Procedures, remove power and check for zero voltage in the
drive.
Test 5 – Testing the
Thermistor and
Thermostat
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