LG FPD2200, Service Manual

Page: 18 / 43

- 18 -
2. NO RASTER STATE ON ANALOG SIGNAL
NO RASTER ON ANALOG
SIGNAL
CHECK I/O SYNC OF
74LVC257 (U5)
CHECK THE PERIPHERAL IC OF
D-SUB(J17)
CHECK THE PERIPHERAL IC OF
AD9884(U1, U2)
CHECK THE PERIPHERAL IC OF
PW364A(U7)
CHECK THE PERIPHERAL IC OF
TMDS TRNSMITTER
SIL160(U38)
CHECK AD9884(U1, U2)
I/O SIGNAL
CHECK PW364A(U7)
I/O SIGNAL
CHECK TMDS TRNSMITTER
SIL 160(U38) I/O SIGNAL
CONN(J1) CHECK
POWER CHECK OF 74LVC257(U5) : CHECK IN FRONT OF U39(3.3V)
POWER CHECK OF AD9884(U1, U2) : U24(3.3VAO), U28(PVD-ADCO), L26(3.3VDO),GND
PW364A POWER : IN FRONT OF PW364A
POWER CHECK OF TMDS TRANSMITTER_SIL160(U38) : L46(AVC), L10(SVCC), L11(PVCC1)
L13(PVCC2), GND, PGND1,PGND2
NO INPUT SIGNAL
OUTPUT
OUTPUT
INPUT
NO INPUT SIGNAL
NO INPUT SIGNAL
(REF)
U24 (LM2937) : INPUT(5VA), OUTPUT(3.3VAO)
U28 (LM2937) : INPUT(15V), OUTPUT(PVD-ADCO)
L26 (BEAD-300) : INPUT(3.3V), OUTPUT(3.3VDO)
L46, L10, L11, L13 (BEAD-300)
: INPUT (3.3V)
: INPUT (3.3V POWER SAPERATION)
(AVC, SVCC, PVCC1, PVCC2)