35
5. Power Board
1) No power
Check bridge rectified circuit and F901 circut
1) Check IC901
2) Check R909/D901 circuit
Check CN902 pin4, 5 = 14V
Check start voltage for the pin8 of IC901
Check R904, R932, R933, and Change IC901
Check the auxiliary voltage is bigger than
10V and smaller than 20V
Check Q901, IC903, D905, D906, D907, ZD921, ZD922
Check IC901
NG
NG
OK
Check AC line volt 110V or 220V
Summary of Contents for B203H
Page 1: ...1 Acer B203H Service Guide h t t p w w w w j e l n e t ...
Page 11: ...11 Back light Unit Electrical Characteristics h t t p w w w w j e l n e t ...
Page 12: ...12 Optical Specifications h t t p w w w w j e l n e t ...
Page 13: ...13 Support Timing h t t p w w w w j e l n e t ...
Page 20: ...20 Screen Position Adjustment h t t p w w w w j e l n e t ...
Page 21: ...21 h t t p w w w w j e l n e t ...
Page 23: ...23 eColor Management OSD h t t p w w w w j e l n e t ...
Page 24: ...24 How to Adjust a Setting h t t p w w w w j e l n e t ...
Page 25: ...25 Adjusting the picture h t t p w w w w j e l n e t ...
Page 26: ...26 h t t p w w w w j e l n e t ...
Page 30: ...30 FOR THE V203H AUDIO MODLE 5 The panel h t t p w w w w j e l n e t ...
Page 37: ...37 Connector Information Chapter 5 h t t p w w w w j e l n e t ...
Page 41: ...41 4 Power Board 5 Main Board 6 Audio Board B203H AUDIO h t t p w w w w j e l n e t ...
Page 42: ...42 Schematic Diagram Main Board Chapter 7 h t t p w w w w j e l n e t ...
Page 43: ...43 h t t p w w w w j e l n e t ...
Page 44: ...44 h t t p w w w w j e l n e t ...
Page 45: ...45 h t t p w w w w j e l n e t ...
Page 46: ...46 Power board h t t p w w w w j e l n e t ...
Page 47: ...47 h t t p w w w w j e l n e t ...
Page 48: ...48 Audio board for B203H AUDIO h t t p w w w w j e l n e t ...