2-12
LEFT CHANNEL
GROUND
RIGHT CHANNEL
Figure No. 2.6 Backplane connections at J14
4. Since the function of the front panel 03 button is now changed to format 05 and the
aux button now selects Dolby Digital, an adhesive label is included to re-label the
front panel.
Clean the area of the front door around the format selection buttons with alcohol to
remove any greasy film that may be present and would interfere with good adhesion
of the label to the door. Remove the label backing material and carefully position the
sticker and press it onto the panel. Press it firmly over the entire area to ensure good
adhesion.
5. Remove the Cat.No.243 from the CP55 and modify the programming of the control
matrix.
a. Locate the line of diodes labeled “F1.” First remove diodes D29 and D33 from
the card.
b. Add two diodes as shown in Figure 2.7. The holes for the anode end of the new
diodes may be filled with solder. Use a solder removing tool to clear these
holes before installing the new diodes. Make sure the polarity is as shown
below on the added diodes.
