AL2016W Service Guide
Page 3
... UNSTABLE ...21 3. 5VDC OUTPUT POWER IS UNSTABLE...22 4. 5VDC OUTPUT POWER IS UNSTABLE...23 5. PCB LAYOUT ...41 2 INVERTER CIRCUIT ...7 CHAPTER 4- DISPLAY CHECK...16 5. SAFETY PRECAUTIONS ...3 2. Acer Service Manual Table of Contents CHAPTER 1- PRODUCT SAFETY NOTICE...3 3. CIRCUIT THEORY ...5 1. FUNCTIONAL BLOCK DIAGRAM ERROR! ASSEMBLY BLOCK ...11 CHAPTER 5- GENERAL POINTS...12 2. INPUT SIGNAL ...13...
... UNSTABLE ...21 3. 5VDC OUTPUT POWER IS UNSTABLE...22 4. 5VDC OUTPUT POWER IS UNSTABLE...23 5. PCB LAYOUT ...41 2 INVERTER CIRCUIT ...7 CHAPTER 4- DISPLAY CHECK...16 5. SAFETY PRECAUTIONS ...3 2. Acer Service Manual Table of Contents CHAPTER 1- PRODUCT SAFETY NOTICE...3 3. CIRCUIT THEORY ...5 1. FUNCTIONAL BLOCK DIAGRAM ERROR! ASSEMBLY BLOCK ...11 CHAPTER 5- GENERAL POINTS...12 2. INPUT SIGNAL ...13...
AL2016W Service Guide
Page 25
Y es NO Check pow er board Is there 14V voltage on (INL inverter) No R aster Y es LED G reen? Acer 5. NO F501 open Y es Check CN 501~CN 504 are OK NO Restart connect the lamp w ire Y es Check IC501-pin8 voltage is H igh-level ... NO Change U 501, U 502, U 503, U 504 NO Change Q 501, Q 502 Service Manual Change R509, R511, C 519 Check I/F board Change R501, R508, C 515 Check I/F board 24 AL2016W backlight can't be turned on pin13 of IC501?
Y es NO Check pow er board Is there 14V voltage on (INL inverter) No R aster Y es LED G reen? Acer 5. NO F501 open Y es Check CN 501~CN 504 are OK NO Restart connect the lamp w ire Y es Check IC501-pin8 voltage is H igh-level ... NO Change U 501, U 502, U 503, U 504 NO Change Q 501, Q 502 Service Manual Change R509, R511, C 519 Check I/F board Change R501, R508, C 515 Check I/F board 24 AL2016W backlight can't be turned on pin13 of IC501?