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
Summary of Contents for DR165
Page 57: ...3 64 3 65 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE ...
Page 58: ...3 66 3 67 2 MAIN P C BOARD BOTTOM SIDE ...
Page 59: ...3 68 3 69 3 I O P C BOARD TOP VIEW BOTTOM VIEW 4 JUNCTION P C BOARD TOP VIEW BOTTOM VIEW ...
Page 77: ...4 17 2 DISC SPECIFICATION 3 DISC MATERIALS 1 DVD ROM Single Layer Dual Layer ...
Page 102: ......
Page 103: ...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 ...
Page 104: ...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 ...
Page 105: ...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 ...
Page 107: ...4 50 4 51 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...