![background image](http://html1.mh-extra.com/html/viewsonic/q9-1/q9-1_service-manual_1020582038.webp)
CHK OSD
U7 pin6,24,25
(PUSH KEY SWITCH)
CHK U7
pin 73~94
RETURN
DPWBN5625T8-CHA
Debug Procedure
JP1,
+12V&+5V
INPUT
Does the
screen
Display??
Solution with
No display
(2)
NO
Display
ok ?
YES
Lost some
bits
of RGB??
YES
NO
CHK R66(R ),
R63(G),R60(B)
C37
,
C34
,
C24
NO
35
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
Q9-1_Q9b-1
Summary of Contents for Q9-1
Page 18: ...15 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 20: ...3 Special application 17 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 21: ...18 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 22: ...19 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 46: ...43 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 52: ...11 PCB Layout Diagrams IF board 49 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 53: ...50 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 54: ...51 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 55: ...52 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 57: ...54 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 58: ...55 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 59: ...56 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 60: ...Key board SOLDER 57 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 61: ...DRILL 58 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 62: ...COMP SILK 59 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 63: ...Top 60 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 64: ...SOLDERMASK 61 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...
Page 65: ...Top Mask 62 ViewSonic Corporation Confidential Do Not Copy Q9 1_Q9b 1...