IBM 3101 Maintenance Information page 48

SAFETY NOTE: Static charge may be present at the anode lead; using
an insulated jumper wire, momentarily ground the CRT
anode terminal to the CRT mounting screw.
1. Turn power off, and disconnect the video cable.
2. Place the Video element with the screen face down •
. •
3. Remove two plugs and two screws from top of Video element.
4. Remove two white seals and two screws from bottom of element.
5. Release the cable frcm rear cover.
6.
Slide the rear cover off.
7. Discharge the static charge (see SAFETY.NOTE).
8.
Reinstall the rear cover in reverse seguence.
(Align the inside guide to the analog card.)
~ote: Put new white seals over screws on.bottom, if required.
Left--side or right side / plug -is indicated- inside _,.. the
plug;.
I
1. Remove two knobs (Brightness and
Contra~t
knobs).
2.
'
Remove the rear cover.
(Discharge the static charge; see SAFETY NOTE in 4.1~ •.
3. Re~ove the anode lead.
4. Remove carefully the small card connected to CRT socket.
I •
(Do not break
glass;. extension in center of the socket.)
5. Disconnect the four wires from
~he
CRT yoke coil.
(Record or mark the wire color for later soldering.)
6. Remove the cable clamp.
7. Remove two Analog card holding screws.
8. Reinstall the Analog card in reverse sequence.
(Do "Final check and adjustment".)
9. Reinstall the rear cover.
(Align the inside guide to the analog card.)
11/10/79 4-20