Daewoo DLV-26C3SMBS, Service Manual

Page: 18 / 54

Hardware Troubleshooting : SMPS
-18-
'CHECKING FLOW ABOUT INFERIOR SMPS' (MODEL NAME : FEL-42C1)
PAGE : 2/2
3. 5V's Out-put voltage is measured too high or low.
A. Checking open and short of IC7.
B. Checking open and short of R24, R25.
C. Checking open and short of IC6.
4. 5V's Out-put voltage is work with intermittent mode.
A. Is R5's condition good from open and short?
YES : changing R5. NO : Checking 1.3 and 1.4 items.
(Checking open and short of MAIN BOARD if that 1, 3 and 1.4 items are no problem.)
5. Out-put voltage(DC12v, 24v, 30v) is measured too high.
A. Checking open and short of IC5.
B. Checking open and short of R44, R43.
C. Checking open and short of IC4.
6. Out-put voltage(DC12v, 24v, 30v) is measured too low.
A. Checking open and short of IC5.
B. Checking open and short of R44, R43.
C. Checking 2.3 item.