Fisher & Paykel MR730 Manual De Usuario

54

Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001

Check 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