TM-428 Page 24
Miller Legend
NO
NO
NO
YES
Connect meter (AC) between
terminal G and terminal E.
0 (zero) volts dc
present after 12 to 18 seconds?
Connect meter (DC) between
terminal C (+) and terminal E (–).
0 (zero) volts ac present?
YES
Reinstall cover.
Check for internal
load such as
shorted diode in
Connect a 100 watt light bulb to
100 Hz ac receptacle.
Connect meter (AC) between
terminal G and terminal E.
Minimum of 1 volt ac present?
YES
Disconnect 100 watt light bulb
and meter leads.
Connect meter (DC) between
terminal C (+) and terminal E (–).
+12 volts dc present?
YES
Reinstall cover.
Check connections
to current
transformer CT1.
Engine does not go to power/idle rpm
with no weld load applied.
Engine does not go to weld rpm with
load applied.
NO
main rectifier SR1.
NO
0 (zero) volts dc present?
Connect meter (DC) between
terminal D (+) and E (–).
YES
NO
Connect meter (DC) between
terminal B (+) and terminal E (–).
YES
+12 volts dc present?
Check connections
to Engine Control
switch S2 and
ground connection
(lead 33).
Start engine. Place Engine Control
switch S2 in Run/Idle position.
Check connections
to Engine Control
switch S2.
Start engine. Place Engine
Control switch in Run/Idle position.
Start engine. Place Engine Control
switch S2 in Run/Idle position; Idle
Lock switch S1 in Unlock position.
Check throttle solenoid TS1
linkage.
Check circuit breaker CB4, throttle
solenoid TS1 connections and
linkage, and control relay CR2.
Replace idle
board/module
PC1
Replace idle
board/module
PC1
6-6.
Troubleshooting Flowcharts For Idle Control Board/Module PC1
Содержание Legend AEAD-200LE
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