This manual is very useful because it presents the technical specifications of the cd player, including the manufacturer of the reader, this helps if you need to replace it. It also displays the settings and layout of the circuit.
Text excerpt from page 23 (click to view)
2) The key top of the ER-12KT7 and the ER-22KT7 includes the guide pin. Install the key top so that the guide pin is engaged with the spacer attached to the keyboard frame. (When using 2 x 2 key top installing jig (UKOG-6725BHZZ) for installation) 1) Remove the key label and the key cap from the key top. 2) Attach the key top so that the guide arm is under the jig.
Jig
2. DRIP-PROOF KEYBOARD COVER (GCOVH2486BHZZ)
2-1. Outline
This cover protects both the keyboard and the mode switch from water and others.
2-2. Installation procedure
1) Remove the double-coated tape and affix.
Key top
Guide arm
3) With the jig inserted in the key top, slowly press down the key top until the guide arm is brought into contact with the guide holder A.
Jig Key top Guide arm
Guide arm A
4) Remove the jig under the above condition 3), and press the key top.
5) Check that the key top operates properly. 6) Install the key label and the key cap.
