LK11 Engineering Drawings Sep76

This multi-page document is a comprehensive collection of engineering drawings, parts lists, and revision control sheets from Digital Equipment Corporation (DEC), dated 1975, primarily concerning the LK11 ASSEMBLY and its constituent sub-assemblies.

The document is organized as a "DRAWING DIRECTORY - CUSTOMER PRINT SET INDEX" and includes detailed information for:

1. LK11 ASSEMBLY (Pages 1-3, 31):

   • This is the main product, referred to as an "ASSEMBLY, LK11".
   • It comes in variations: LK11-0 (basic LK11), LK11-A (LK11 with LK04-A, a 35' cable assembly), and LK11-B (LK11 with LK04-B, a 15' cable assembly).
   • Its parts list includes a "PUSHBUTTON INT." (M7060), and the "LK04 ASSEMBLY" in various cable configurations.
   • A "Shipping List LK11" (Page 31) details accompanying documentation like packaging instructions, diagnostics, and technical manuals for both LK11 and LK04.

2. M7060 PUSH BUTTON CONTROL (Pages 4-13):

   • This is a sub-assembly of LK11.
   • It is identified as an "ASSEMBLY, PUSH BUTTON CONTROL" and its directory, parts list, revision control, and detailed electrical schematics (e.g., Push Button Register, Lamp Data Register, Interrupt Control, Bus Data Line Transceivers) and printed circuit board layouts are provided.

3. LK04 ASSEMBLY (Pages 14-16):

   • This is another significant sub-assembly, often integrated into LK11.
   • It is an "ASSEMBLY, LK04" also available with 35' (LK04-A) or 15' (LK04-B) cables.
   • Its mechanical and electrical drawings, parts list, and an interconnection diagram show it comprises a base, cover, support switch, "PUSHBUTTON PAD" (5411054), "DC CONVERTER" (W771), and "PUSHBUTTON CABLE".

4. 5411054 PUSH BUTTON PAD (Pages 17-23):

   • This is a sub-assembly of the LK04.
   • It is explicitly named "PUSH BUTTON PAD" and features its own directory, parts list (including switches and lamps), revision control, and detailed electrical schematics (e.g., Push Button Latches, Lamp Control, Push Button Detect) and printed circuit board layouts.

5. W771 5V TO 15V CONV. (Pages 24-29):

   • This is a sub-assembly of the LK04.
   • It is a "5V TO 15V CONV." power conversion module. Its directory, parts list, revision control, and detailed electrical schematics and printed circuit board layouts are included.

6. PUSHBUTTON CABLE (Page 30):

   • A separate drawing provides a wire table for the "PUSHBUTTON CABLE", detailing its connections and color codes.

In essence, the document provides a hierarchical breakdown of the LK11 system, offering comprehensive technical details for its primary components and their internal workings, from high-level assemblies to individual circuit boards and cables.