SERVICE PARTS INFORMATION 4
Inverter PCB
Filter PCB
Check Filter PCB -2
Check Filter PCB -1
Check Filter PCB -3
Replace defective electric
parts.
Replace Inverter PCB
Replace Inverter PCB
Replace Inverter PCB
YES
YES
Electric parts check
Replace Filter PCB
Replace Filter PCB
NO
YES
YES
NO
PCB pattern and parts on PCB defective?
04-87
(2) Replace blown fuse.
(3) Disconnect all the connection wires between the Filter PCB - Inverter PCB.
(4) Is there a short between L- N?
Check Inverter PCB -1
(5) Is there a open between the two ends of the resistance R385 or R386?
(6) Is there a short between wire :W380 and terminal TM394.
YES
YES
Check Inverter PCB -3
YES
(8) Disconnect the connection wires (2) between the Inverter PCB and ACTPM
(9) Is there a short between the wires of step (8)?
Replace Inverter PCB
YES
NO
NO
Check Inverter PCB -4
(10) Disconnect the connection wires (8-pin connector)
between the Inverter PCB - Main PCB.
(11) Is there a short between Inverter PCB side connector pins 1-2 and 2-3?
Inverter PCB side short circuit
Replace Inverter PCB
Filter PCB side short circuit
Replace Filter PCB
YES
Check Inverter PCB -5
(12) Disconnect the connection wires (3-pin connector)
between the Inverter PCB - Filter PCB.
(13) Is there a short between Inverter PCB side connector
pins 1-3 and Filter PCB side connector pins 1-3?
Turn on the power.
(14) Reconnect all the connection wires disconnected up to (1)-(13) to their original places.
(15) Turn on the AC power.
If the LED of the Inverter PCB does not light or blink, replaces the Inverter PCB-Filter PCB.
NO
NO
NO
Check Inverter PCB -2
(7) Is there a open between each terminals of Diode D380 or D381.
NO
NO
(1) Using a tester, measure the resistance value of both ends of the fuses (P501). (*Cannot be checked visually.)
Is Fuse (45A/500V) open?
Are the following parts defective?
ACTPM
Choke Coil
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