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ELECTRICAL TROUBLESHOOTING GUIDE
4. SYSTEM PART
Power on
Main
Board
Timer Board
Check IC150,IC151,
IC152,IC153 and SMPS.
Check SMPS.
“HELLO”
display on LED
OK?
IC501,
IC601,IC602 Vcc
1.2VA,3.3VA,1.5V,
1.1V OK?
5 V
OK?
NO
NO
NO
YES
YES
Check IC501 & CN901.
Replace X501.
Replace IC901
(LED driver).
VCLK,
VDATA, VSTB
OK?
X501
27.000 MHz
OK ?
IC901
data output to LED
OK?
NO
NO
NO
YES
YES
YES
YES
4A
Replace
IC501 MT8560.
Replace LED901.
4B
Содержание BP540
Страница 63: ...3 50 WAVEFORMS OF MAJOR CHECK POINT 1 1 SYSTEM PART 1 IC501 MT8560 X TAL 27 MHz 1 ...
Страница 64: ...3 51 2 SYSTEM PART 2 SYSTEM MEMORY IC601 BA0 2 IC601 WE 3 IC601 CAS 4 IC601 CK 5 2 3 5 4 ...
Страница 65: ...3 52 3 HDMI PART H_SDA 6 H_SCL 7 HDMI_CLK_N 8 HDMI_0_N 9 9 8 7 6 ...
Страница 69: ...3 56 MEMO ...
Страница 77: ...3 72 3 71 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 79: ...3 76 3 75 MEMO MEMO ...
Страница 91: ...4 12 MEMO ...