1. No Power
No Power
Check CN1
+5V
Yes
Change Power
Board
NO
Check U1=3.3V
Q7,Q8,Q9,Q13=
1.8V==1.8V
Change
U1,Q7,Q8,Q9,
Q13
NO
Check Short Of
Main Board
No
Yes
Check
Y1=24MHz
NO
Change Y1
Yes
Check U3 Pin
15,16 Clock
NO
Change U3
RU Software
ISP
Change U3
Yes
Check U3
Pin 24 level
Change U3
NO
Check Bottom
Board
Chapter 4
TROUBLE SHOOTING
Summary of Contents for T230H - Bmidh Wide Touch Screen Display
Page 18: ...PCB CONDUCTOR VIEW Button Board ...
Page 19: ...Main board ...
Page 20: ...Power board ...
Page 21: ...ARM Board Top Side ...
Page 22: ...ARM Board Bot Side ...
Page 23: ...Camera L Board Top Side ...
Page 24: ...Camera L Board Bot Side ...
Page 25: ...Camera R Board Top Side ...
Page 26: ...Camera R Board Bot Side ...
Page 34: ...Rear View Top View ...
Page 35: ...Side View unit mm ...
Page 52: ...EXPLODED DRAWING ...
Page 64: ...POWER BOARD_1 ...
Page 65: ...POWER BOARD_2 ...