Miller Electric Legend AEAD-200-LE - Manual (Page 29)

TM-428 Page 25 Miller Legend
NO
Reinstall cover.
+12 volts dc present?
YES
Engine does not go to weld rpm with
Engine Control switch S2 in Run position.
NO
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 position.
Check circuit breaker CB4, throttle
solenoid TS1 connections and
linkage, and control relay CR2.
Connect meter (DC) between
terminals D (+) and E (–).
Prior to Serial No. JH300534,
move Weld/Power switch S1 to
Weld position.
Control Relays CR3 and CR4 do not
energize at idle rpm (See Section 5 for
CR3 and CR4 information)
Reinstall cover.
NO
YES
+12 volts dc present?
Connect meter (DC) between
terminal A (+) and F (–) prior to
Serial No. JH300534, or B (+) and
F (–) effective with Serial No.
JH300534.
Start engine. Place Engine
Control switch in Run position.
NO
YES
0 (zero) volts dc present?
Check control relays
CR3 andCR4.
Place Engine Control switch S2
in Run/Idle position.
Replace idle
board/module
PC1
Replace idle
board/module
PC1
Replace idle
board/module
PC1
Connect meter (DC) between
terminals C (+) and E (–).