4-2
ELECTRICAL TROUBLESHOOTING GUIDE
Are the pin 44 of
5V, pin41 of 12V
respectively after the power cable
connecting?
Reset or Power Check.
Check the power(5V/12V) short.
Repair the SMPS Block
Check the LIC401(3.3V regulator IC).
Check the LIC201, LIC121.
Does the pin #1
(Reset) of LIC271 change 0V to 3.3V
at the power supply initial input
mode?
<Power>
Is the pin 5 of LIC401 3.3V?
<Reference>
1.65V(VREF) : Check pin113 of LIC121?
2.2V(HDVREF): Check pin78 of LIC121
NO
NO
YES
YES
YES
YES
Are the LX201 oscillating?
Check the LX201(16.9MHz).
Check the LIC201.
NO
Check the LIC401.
NO
Check the LIC121.
NO
Check it after connecting the power cable
only on interface cable for NO Reset or
Power ON.
YES
OK
Содержание RH1777
Страница 27: ......
Страница 43: ...3 45 3 46 2 SMPS 2 CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T W NTSC ...
Страница 44: ...3 47 3 48 3 MPEG CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 45: ...3 49 3 50 4 FLASH DDR CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 46: ...3 51 3 52 5 RESET 1394 JEPG CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 47: ...3 53 3 54 A B C D E F G H I J K L M N O P Q R S T 6 ATAPI MEMORY CARD CIRCUIT DIAGRAM ...
Страница 50: ...3 59 3 60 9 DECODER CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T W NTSC ...
Страница 51: ...3 61 3 62 10 TIMER CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 56: ...3 71 3 72 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 57: ...3 73 3 74 2 I O P C BOARD TOP VIEW ...
Страница 58: ...3 75 3 76 BOTTOM VIEW 2 I O P C BOARD ...
Страница 59: ...3 77 3 78 3 POWER P C BOARD ...
Страница 61: ...3 81 3 82 6 HDMI P C BOARD OPTIONAL PARTS TOP VIEW BOTTOM VIEW ...
Страница 62: ......
Страница 79: ...4 17 2 DISC SPECIFICATION 3 DISC MATERIALS 1 DVD ROM Single Layer Dual Layer ...
Страница 104: ......
Страница 105: ...4 42 4 43 CIRCUIT DIAGRAMS 1 DSP CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 106: ...4 44 4 45 2 RF CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 107: ...4 46 4 47 3 DRIVE CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...
Страница 109: ...4 50 4 51 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Страница 110: ...4 52 4 53 2 MAIN P C BOARD BOTTOM VIEW ...