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3-4
Replace X101
Check IC308 power and
other circuits
LG LOGO not displayed
at POWER : ON.
IC308 - 8 : HIGH?
( /E5_RST )
RESET IC202 - 26 : check
signal? (/FCS0 )
Check IC313 signal flow
X101 : Clock oscillated?
( 13.5 MHz )
NO
NO
NO
YES
YES
Check IC202 power and
other circuits
YES
Check SMPS
NO
Check DRIVE power?
5V, 12V
Check ATAPI Interface
connector J301
YES
3. SYSTEM Circuit
4. DISC not recognized.
Содержание RH4820W
Страница 40: ...3 41 3 42 2 E5 BGA POWER UART2 CIRCUIT DIAGRAM E5 BAG POWER UART2 ...
Страница 43: ...3 47 3 48 5 1394 ETHERNET CONNECTOR CIRCUIT DIAGRAM 1394 ETHERNET CONNECTOR ...
Страница 44: ...3 49 3 50 VIDEO IN OUT 6 VIDEO IN OUT CIRCUIT DIAGRAM ...
Страница 45: ...3 51 3 52 7 AUDIO IN OUT CIRCUIT DIAGRAM AUDIO IN OUT ...
Страница 46: ...3 53 3 54 8 I O MICOM CIRCUIT DIAGRAM SR17208A I O MICOM ...
Страница 47: ...3 55 3 56 9 TUNER VIDEO IN OUT CIRCUIT DIAGRAM SR17209A TUNER VIDEO IN OUT 3 9K 3 9K ...
Страница 48: ...3 57 3 58 10 FRONT CIRCUIT DIAGRAM HDD VDR_FRONT ...
Страница 54: ...3 69 3 70 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE LOCATION GUIDE ...
Страница 55: ...3 71 3 72 2 MAIN P C BOARD BOTTOM SIDE LOCATION GUIDE ...
Страница 56: ...3 73 3 74 3 I O P C BOARD LOCATION GUIDE 4 JACK P C BOARD LOCATION GUIDE LOCATION GUIDE LOCATION GUIDE ...
Страница 57: ...3 75 3 76 5 FRONT P C BOARD LOCATION GUIDE 6 KEY P C BOARD ...
Страница 58: ...3 77 3 78 7 POWER P C BOARD LOCATION GUIDE ...
Страница 88: ...3 108 4 IC302 uPD76f0047 MICOM Pin Assignment ...
Страница 93: ...3 113 3 Main Clock2 for IC302 20MHz GND LEVEL X301 IC302 PIN 13 4 SDRAM Clock GND LEVEL MCLK IC201 PIN 35 ...
Страница 110: ......
Страница 112: ...3 132 3 133 2 DSP CIRCUIT DIAGRAM No Power No operation DSP IC RESET IC SDRAM R259 0Ω ...
Страница 114: ...3 136 3 137 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...