HP 1652B Getting Started Manual page 710

Disassembling
Use the following steps to disassemble the keyboard assembly.
the Keyboard
Assembly
10.
Disconnect the Rotary Pulse Generator
(RPG)
cable from the PC board on
the keyboard assembly.
11. Separate the PC board, keypad, and keyboard panel/label.
RPG CABLE
Note 3
II
\ H3
KNOB
\
\
RIBBON CABLE
KEYPAD
KEYBOARD PANEL/LABEL
01653EO6
BOARD
Figure 6D-5. Exploded view of the Keyboard Assembly
12. The knob is force fitted on the
RPG
shaft. To remove the knob, pull it
straight off.
13. Remove the 3/8-inch nut from the RPG.
14. Remove the RPG from the keyboard panel.
15. The keyboard label uses a self-stick adhesive. If the label must be removed,
carefully peel it off.
16. Replace the keyboard assembly by reversing this procedure.
When you reinstall the top cover, insert the four screws on the sides of the cover
first while making sure the cover fits into the grooves of the instrument cabinet.
Then insert the six screws in the top of the cover.
HP1
6528/16538
Service Manual
Assembly Removal and Replacement
6D-9