6-2
1. No Display On Screen
Note:
1. If replace “
Main-Board
”, Please re-do “DDC-content” programmed & “White-Balance”.
2. If replace “
Power Board
” only, Please re-do “ WHITE-Balance”
OK
Measured CN201 PIN 5/6= 12V?
Measured CN201 PIN 9/10= 5V?
Measured U102 PIN 50= 3.3V?
Check Correspondent component.
Is there any shortage or cold solder?
OK
Disconnected the Signal cable (Loose the
Signal cable), Is the screen show “Cable Not
Connected”?
Connected the Signal cable again,
Check LED status.
Green
Replace IC104
Flash Rom
NG
Connected the Signal
cable again Check LED
status.
Check Power switch is in Power-on
status, and check if Power switch had
been stuck?
Orange
OK, Keyboard no stuck
Orange
Green
Check the Wire-Harness from CN503
Measured RGB (R106, R107,
R108) H, V Input at U102 PIN 95,
96, Was there have signal?
Check
Correspondent
component
short/open
(Protection Diode)
NG
OK, Wire tight
enough
Check
Panel-Power Circuit
Block
OK, Panel Power OK
Check
U102 Data-output
Block
Replace
Power board
and Check
Inverter
control relative circuit
Re-do White balance adjust
Measured Crystal
X102 (14.318MHz)
OK
Replace
U102 (ZAN3XL)
OK
OK, IC104 data OK
NG
OK
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 ...