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6.2 NO DISPLAY
No
Display
Check LED Color
Check Power
region
Refer to NO POWER
trouble shoot flow char
Check IO cable is
connect OK ?
Amber
Dark
Check I/P signal is in
pwr saving state?
Yes
Check X101 Crystal
12MHz is working?
Amber & Green
Check I104 is OK ?
Press Power key
ON/OFF is OK ?
(See LED is green or
dark.)
Check uP I104
Reset is Ok ?
No
Change
I104
Yes
Check Reset circuit
C117,D113,Q101
No
Yes
Press "1" key if OSD
menu is on display ?
Yes
Check Keypad
pcb is OK ?
No
Check if
Inverter is Ok ?
Yes
Check Power
region with no
backlight
No
Yes
Check X102 Crystal
24.576MHz is
working ?
Change X102
No
Check I101
Pin#46,47 data bus
have signal
Change I101 LCD
controller IC
No
Yes
Check panel Powers
VLCD_3V3
VLCD_12V (XG08
Panel Only)
correct
Yes
Change LCD panel
Yes
No
Green
42
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VE510s-4_VE510b-4
Summary of Contents for VE510b-4
Page 70: ...11 2 MAIN PCB BOTTOM VIEW 67 ViewSonic Corporation Confidential Do Not Copy VE510s 4_VE510b 4...
Page 71: ...11 3 CON PCB TOP VIEW 69 ViewSonic Corporation Confidential Do Not Copy VE510s 4_VE510b 4...
Page 72: ...11 4 CON PCB BOTTOM VIEW 69 ViewSonic Corporation Confidential Do Not Copy VE510s 4_VE510b 4...
Page 74: ...11 6 POWER PCB BOTTOM VIEW 71 ViewSonic Corporation Confidential Do Not Copy VE510s 4_VE510b 4...