Apple Multiple Scan 20 Display Spécifications télécharger pdf (Page 22)

Troubleshooting CRT - 10

CRT

If the monitor shuts down shortly after powering up, follow this

procedure to determine if the CRT is defective:

1 Refer to Take Apart to remove the monitor stand, remove the

rear cover, discharge the CRT, remove the EMI shield.

2 With the power off, insert a nonconductive shield (such as a

strip of plastic or cardboard) between the CRT/video board

and the main deflection board to shield both boards from

potential shorts.

Note:

Twisting, bending, or applying force to the CRT/video

board could damage the neck of the CRT. Be sure to pull the

CRT/video board straight off the CRT.

Loosen the mounting screw on the neck clamp.

4 Without disconnecting any cables, pull the CRT/video board

straight off the neck of the CRT (about 3/4 inch) until the

board disconnects from the pins.

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Apple Multiple Scan 20 Display Spécifications Page 22