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4. Disassembly Instructions
Disassembly Instructions
1.Swivel Base Removal
Face down the monitor(Fig 4-1), press the
stopper then slide lift off the swivel base
from the monitor,
2.Back Cover Removal
a) Remove two screws of the lower side of
the back cover.(Fig4-2),(Fig4-3)
b) Use a small flat bladed screwdriver or a
paper clip insert into the two respective
crevices which located in the seam of
the front & back cover on the top of the
cabinet.
Hold and Push the tool down to release
the snap-on lock, then remove the back
cover. (Fig 4-4)
Caution : When servicing or replacing the
CRT, disconnects the anode and
discharges the anode shield
completely.
As high voltage (25KV) may remain
on the anode for an extended time
after power off.
3.PCB Assembly Remove
a) Unplug two grounding connectors
and the degaussing coil grounding
connector from the CRT drive
shield.
b) Remove CRT drive board from CRT
neck (Fig 4-5).
c) Unplug the DY connector, AC
connector, Degaussing coil
connector and the CRT grounding
connector from the FBT shield.
(Fig 4-1)
(Fig 4-2)
(Fig 4-3)
(Fig 4-4)
4
.
Disassembly Instructions
ViewSonic Corporation
9
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...