2-105
MAIN SET TROUBLESHOOTING
Optical function
Portable function
Update new wireless,
μ
-COM firmware.
Update new wireless,
μ
-COM firmware.
IC201
pin6 OPT_IN signal
OK?
CN253
pin6, 8 audio L/R
OK?
Check JK203 or replace.
Check CN902, JK902.
YES
YES
YES
YES
YES
NO
NO
IC201
pin26 ~ 29 I2S signal
OK?
IC401
Pin23, 24, 26, 27, 29, 30
signal OK?
CN401
pin13, 14, 15 signal
OK?
IC401
Pin23, 24, 26, 27, 29, 30
signal OK?
CN401
pin13, 14, 15 signal
OK?
Check IC201 or replace.
Check IC401 or replace.
Check IC404 or replace.
Check IC401 or replace.
Check IC404 or replace.
YES
YES
YES
YES
NO
NO
NO
NO
NO
1-5. NO AUDIO OUTPUT
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 ...