Ip Board (Inverter) - Samsung 740NW Service Manual
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Also See for 740NW:
- Owner's manual (72 pages) ,
- Manual del usuario (76 pages) ,
- Manual (86 pages)
Table of Contents
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4-4 IP BOARD (INVERTER)
Check any dimming
circuit
Power On
Check the 13V line
1 and 2 pins of FDM0565R
Check Protection
Normal:0.6V~0.8V
1 and 2 pins of FDM0565R
Check Protection
Normal:0.6V~0.8V
No
Check the output current
Check others
No
Yes
No
Yes
No
Yes
No
Yes
4 Troubleshooting
Check the power system
Check the IC drive
Check MOSFET
Check the OVP and OLR
circuits
Check the feedback
system
4-7
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