
16 Disassembly
1.
Use the T15 driver and remove the four screws that attach the front frame (MP18) to the chassis.
2.
Slide the front frame forward about two inches.
3.
Carefully unplug the cable (MP23) from the keyboard plug.
Removing the Front Bezels and Keyboard Plug
The front frame must be removed from the chassis before you can remove the bezel pieces (MP11-12).
Note
The keyboard plug (A3) can only be removed from the front frame after the bottom bezel (MP11) has
been removed.
1.
Insert the slot-head screwdriver into the notch at the bottom of each side bezel (MP12) to remove the bezels.
2.
While applying upward pressure with the screwdriver to clear the latch, pull the side bezel away from the frame. When
the latch clears the bottom bezel (MP11), the side bezel will come right out.
3.
Repeat this procedure for the other side bezel.
4.
When the side bezels have been removed, simply grasp the top (MP10) or bottom bezel (MP11) at either end and pull
the bezels away from the frame. The bezels will snap out of the front frame.
5.
Use the T15 driver to remove the two screws that attach the keyboard plug (A3).
Removing the Rear Subchassis
The cover must be removed from the unit before you can remove the rear subchassis (MP4).
1.
Use the T15 driver and remove the six screws (three on each side) that attach the rear subchassis (MP4) to the chassis.
2.
Slide the subchassis backward about three inches.
3.
Carefully unplug the keyboard cable assembly (MP23) from the subchassis.
4.
Grasp the on/off pushrod (MP13) firmly and unsnap it from the switch located inside the subchassis. Pull the pushrod
straight back from the subchassis to unsnap it.
5.
Remove the rear subchassis from the chassis.
Removing the PC Boards
The rear subchassis must be removed from the unit before you can remove the pc boards (A1, A2).
Observe all standard anti-static procedures when removing the pc boards from the subchassis (see
Chapter 1).
Summary of Contents for 66000A
Page 20: ......
Page 23: ...Troubleshooting 23 Figure 4 1 Overall Troubleshooting Sheet 1 of 7...
Page 24: ...24 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 2 of 7...
Page 25: ...Troubleshooting 25 Figure 4 1 Overall Troubleshooting Sheet 3 of 7...
Page 26: ...26 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 4 of 7...
Page 27: ...Troubleshooting 27 Figure 4 1 Overall Troubleshooting Sheet 5 of 7...
Page 28: ...28 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 6 of 7...
Page 29: ...Troubleshooting 29 Figure 4 1 Overall Troubleshooting Sheet 7 of 7...
Page 30: ...30 Troubleshooting Figure 4 2 Bias Troubleshooting Sheet 1 of 2...
Page 31: ...Troubleshooting 31 Figure 4 2 Bias Troubleshooting Sheet 2 of 2...
Page 32: ...32 Troubleshooting Figure 4 3 ROM Microprocessor Troubleshooting...
Page 43: ...TP 0 TP 1 TP 2 TP 4 TP 5 TP 8 TP 7 TP 9 TP10 TP11 TP12 TP13 COM TP14 TP 3 TP 6...
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