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Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
C2 MR700 SERIES FAULT FLOW CHART FOR NO GO CONDITIONCheck Voltage
Rating Of Unit
Open Unit and check if
thermal cut out under
heaterplate has tripped
Reset thermal cut out and find reason
for fault
Check for mains voltage
at Connector J5 on power
board
Check connectors on power
board are in correct locations and
secure, check fuses (F1 - F4),
check voltage on connector J7of
power PCB, mains switch on,
connectors on rear of control
board and continuity of
transformer, connector J8-1& 3
(Primary) and connector J9-1 & 2
+ 3 & 4 (Secondaries).Check
voltage on transformer
secondary J9.
Replace power board
and test
Replace control board
and test
Return unit for repair
Perform calibration and
performance checks as
outlined in Sections 3.0 and
4.0 of the Technical Manual
before re-instatement of unit
Check mains lead and
plug
Repair faulty component
and test
Assemble and test
NO
YES
YES
GOOD
NO
NO
YES
YES
BAD
NO
YES