Repair manual

Exploded View 6
Power/Analog/Video Boards
There are two part numbers for the power/analog/video board for the iMac (Summer
2001) computer because there are two vendors manufacturing the boards. The part
numbers are 661-2465, Ver. 2, HH and 661-2466, Ver. 2, LG. These boards must be
exchanged like-for-like.
The 661-2465 board has a switch at location SW901 that must be set for the type of CRT
tube in the computer. The switch settings are silk-screened on the board near SW901. If the
power/analog/video board or the CRT are replaced, make sure to set the switch to the
appropriate position (either to LG (for the LG CRT) or to CPT (for the CPT CRT)).