6.1. NO POWER
6.2. MCU NO FUNCTION
12V
POWER
STAR
CHECK
5V O/P
T801
CHECK
I902
CHECK
P901~P904
PANEL
CHECK
12V O/P
C823
CHECK F801
D801 C805
CHECK
I801
Q801
CHECK
D823
D822
CHECK I901
Q905, Q911
Q907, Q908
Q909, Q910
CHECK
T901, T902
Y
MAIN
BOARD
5V
12V
CHECK
RESET
CHECK VCC5V
OK?
CHECK I106
PIN41 3.3V?
CHECK
24MHZ PIN15,16
OK?
CHECK
PIN15,PIN16
CLOCK OK ?
CHECK
I106 EVERY TWO
PIN SHORT ?
CHECK
C234.R208,D121
D116,R186
CHECK
L804,D823,D822
OK ?
CHECK
Q103,Q104,D101,
D102,L107
CHECK
X102,C232
C233 OK ?
CHECK TRACE
OK ?
CHECK
KEYPAD
P107 OK ?
N
N
N
N
N
N
ViewSonic Corporation
Confidential – Do Not Copy
VP920-1_VP920b-1
44
Содержание VP920-1
Страница 76: ...8 Exploded View And Exploded Parts List ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 73 ...
Страница 77: ...ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 74 ...
Страница 89: ...11 PCB Layout Diagrams 11 1 MAINPCBTOPVIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 86 ...
Страница 90: ...11 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 87 ...
Страница 92: ...11 5 POWER PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 89 ...
Страница 93: ...11 6 POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP920 1_VP920b 1 90 ...