2-103
MAIN SET TROUBLESHOOTING
B
System part OK.
Check IC150, IC151, IC153
and SMPS board.
Assemble properly.
Replace IC506
(Nand Flash).
Replace X501.
Menu “Home” display
on monitor OK?
“LG Logo”
display on monitor
OK?
A
1.2 V/ 1.5 V/
3.3 V OK?
Proper
assemble MAIN
and FRONT board
OK?
IC506
NF_ALE, NF_CLE
OK?
X501
27.00 MHz
OK?
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
Check X101 and IC101.
Replace IC500 BCM7632
or IC502, IC503 (DDR3).
Reset &
UART RX,TX
OK?
NO
YES
YES
YES
Summary of Contents for LHB976
Page 15: ...1 14 MEMO ...
Page 129: ...2 114 3 VIDEO PART 100 FULL COLOR BAR COMPOSITE 9 COMP_Y 10 COMP_Pb 11 COMP_Pr 12 11 12 10 9 ...
Page 130: ...2 115 HPD_TX 13 DDC_SDA 14 DDC_SCL 15 TXC 16 15 14 16 13 4 HDMI PART ...
Page 131: ...2 116 5 MICOM AND MPEG I F PART BCM_nRESET 17 18 19 17 MICOM_UART_RX2 18 MICOM_UART_TX2 19 ...
Page 161: ...2 176 2 175 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN SET P C BOARD 1 1 MAIN P C BOARD TOP VIEW ...
Page 162: ...2 178 2 177 MAIN SET P C BOARD MAIN P C BOARD BOTTOM VIEW ...
Page 164: ...2 182 2 181 MAIN SET P C BOARD 1 3 AMP P C BOARD TOP VIEW BOTTOM VIEW ...
Page 169: ...3 2 MEMO ...
Page 172: ...3 7 A700 2 SPEAKER SECTION 2 1 CENTER SPEAKER EXPLODED VIEW ...
Page 174: ...3 9 A600 2 3 REAR SPEAKER EXPLODED VIEW ...
Page 175: ...3 10 A900 2 4 PASSIVE SUBWOOFER EXPLODED VIEW ...
Page 189: ...4 12 2 DRIVE IC R2A30209SP SPINDLE MOTOR AND 6CH ACTUATOR DRIVER 2 1 Block Diagram ...
Page 193: ...4 16 MEMO ...