IBM 7133 Series Service Manual

Control Panel AssemblyNote: Unless you have a particular reason to do so, do not turn off the using system orthe 7133 when removing or installing the control panel assembly.| This section has two subsections; one is for Models 010 and 020, the other is for Models| 500 and 600. Go to the appropriate subsection.| Control Panel Assembly (Models 010 and 020)| 1 If not already done, remove (if an early type) or open (if a late type) the front cover| (see “Covers” on page 3-2).| 2 Unscrew the captive screw 1.| Note: The control panel assembly on the left-hand side of the diagram is present| on 7133s that have the early type of front cover. The control panel assembly on the| right-hand side of the diagram is present on 7133s that have the late type of front| cover.3 Pull off the control panel assembly 2.Note: If mainline electrical power is present in the 7133, the internal dc power turnson (if previously turned off) when the control panel assembly is removed. The dcpower remains turned on when the control panel assembly is reinstalled.4 Replace parts in the reverse order.3-36 7133 Service Guide