![background image](http://html1.mh-extra.com/html/viewsonic/a90f-1/a90f-1_service-manual_1020116013.webp)
F
d)
Discharges the remaining static
electricity by shorting CRT anode to
ground. Then remove the FBT anode
connector.
e) Remove the PC main board from the
chassis guide of the front cover. (Fig4-6)
4.CRT Removal
a) CRT is supplied as ITC.
b) Remove 4 screws (F) from the front cover
(Fig4-7) to move the CRT
CAUTION: Do not lift the CRT by the neck.
(Fig 4-5)
(Fig 4-6)
(Fig 4-7)
F
F
F
ViewSonic Corporation
10
Confidential – Do Not Copy
A
9
0f+-1
Summary of Contents for A90f+ 1
Page 57: ...12 PCB Layout ViewSonic Corporation 54 Confidential Do Not Copy A90f 1...
Page 58: ...VIDEO PWB 0414 ViewSonic Corporation 55 Confidential Do Not Copy A90f 1...
Page 59: ...KEY CONTROL PWB 0488 ViewSonic Corporation 56 Confidential Do Not Copy A90f 1...
Page 60: ...MAIN BOARD 13 Schematic Diagrams ViewSonic Corporation 57 Confidential Do Not Copy A90f 1...
Page 61: ...VIDEO ViewSonic Corporation 58 Confidential Do Not Copy A90f 1...
Page 62: ...KEY CORTROL ViewSonic Corporation 59 Confidential Do Not Copy A90f 1...
Page 63: ...POWER SUPPLY CKT ViewSonic Corporation 60 Confidential Do Not Copy A90f 1...
Page 64: ...MCU CONTROL CKT ViewSonic Corporation 61 Confidential Do Not Copy A90f 1...
Page 65: ...Time Base DeflectionCKT ViewSonic Corporation 62 Confidential Do Not Copy A90f 1...
Page 66: ...H V DYNAMIC FOCUS CKT ViewSonic Corporation 63 Confidential Do Not Copy A90f 1...
Page 67: ...14 Exploded Diagram ViewSonic Corporation 64 Confidential Do Not Copy A90f 1...