6-7
5.2 No Backlight
Check CON102 PIN 12 =12V
Check IC201 PIN 11, 12, 19, 20
Check IC201 PIN 3=5V
End no output debug
Check ON/OFF signal
Check IC201 PIN 5=5V+-0.25V
Check adapter
Check Interface board
OK
OK
NG
NG
Check Q201,Q202,ZD203 circuit
NG
NG
OK
Check IC201 PIN 18 triangular wave is
normal
Check Q201, Q202, ZD203 circuit
Check R216, R217, C218, C220, IC201
circuit
Check R216, R217, C218, C220, IC201
OK
OK
OK
NG
NG
Содержание AccuSync LCD72VM
Страница 4: ...AccuSync TM LCD52VM LCD72VM LCD92VM ...
Страница 28: ...AccuSync LCD52VM AccuSync LCD72VM AccuSync LCD92VM User s Manual ...
Страница 122: ...7 7 ...
Страница 128: ...7 13 ...
Страница 150: ...9 4 4 AUDIO BOARD BLOCK DIAGRAM MODEL LCD72VM Line In L R Audio Out L R Speaker Audio Amplifier ST TDA7496L 12V ...
Страница 151: ...10 1 SCHEMATIC DIAGRAM TABLE OF CONTENTS Page MAIN BOARD 10 2 AUDIO BOARD 10 7 KEYPAD BOARD 10 8 POWER BOARD 10 9 ...
Страница 164: ...12 1 Revision Revision New Issue 1st Edition 2004 10 20 REVISION HISTORY ...