![background image](http://html.mh-extra.com/html/lg/dr165/dr165_service-manual_211746020.webp)
3-5
No 5.2V
Is the VCC (5.3V) supplied to Q151
Emitor ?
YES
Check 5.3VA on SMPS Board
NO
Is there about 0V at D153 and Q156
Collector ?
YES
Check Q151 and Replace
NO
Check the ‘PWR CTL H’ signal from
µ-COM
NO
Is there about 5V at R171 and 0.7V at
Q156 Base ?
YES
Check Q156 and Replace
YES
No 5VT
Is the VCC (5.3V) supplied to Q155
Emitor ?
YES
Check 5.3VA on SMPS Board
NO
Is there about 0V at D152 and Q152
Collector?
YES
Check Q155 and Replace
NO
Check the ‘TIMER H’ signal from µ-COM
NO
Is there about 5V at R180 and 0.7V at
Q152 Base?
YES
Check Q152 and Replace
YES
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 ...