Daewoo DDT-14H9ZZF(14"), Service Manual, Page: 62 / 116

61
TROUBLESHOOTING
In case of no operation after the
power transmit ment of DVD-Player
SET.
Is 5V constant?
(Check LP03)
YES
NO
NO
NO
YES
Is 3.3V constant? (Voltage Check
LP09, LP10, RP01, RP03, IP02 )
Is 2.5V constant?
(Voltage Check IP01, LP04, RP02, RP04)
Change LP03
Change LP09, LP10,RP01, RP03,
IP02
Change IP01, LP04, RP02, RP04
NO
YES
Is X-TAL oscillated?
(Check XC01 oscillation waveform)
Change XC01
2 . MPEG B/D
A. DEBUGGING
Is RESET IC operating?(After approx.
200ms from the power transmit, check
whether IC02 output turns into HIGH)
YES
NO
NO
NO
YES
YES
Has FRASH-ROM code loaded
appropriately? (Check whether the
READ operation of FLASH-ROM is
completed within 2 seconds.)
Is LOGO screen
displayed?
Initial operation completed
LOGO screen displayed
Change IC02
Rewriting FLASH-ROM
Check and change
RC47,RD01,RD02,RD03,RD04,LP08
YES