Installation manual

Dolby
®
Model CP650 Installation Manual
3-1
Chapter 3
Front Panel and Alignment Overview
This chapter describes the features on the CP650 front panel, along with an overview
of the general principles involved in the alignment of Dolby
®
cinema equipment. It is
useful to develop an understanding of why the CP650 is aligned as described in this
manual. If the installer is already familiar with the CP650 and these principles, or is
in a hurry to complete the installation, this chapter may be read later. Continue the
setup procedure beginning with the next chapter.
3.1 The CP650 Front Panel
menu
mute
P1 P2
Front Panel Display
Displays processor condition, operation
mode, and is used to perform alignment
by the service engineer when PC setup
software is not used.
Next Menu Button
Steps through the
menu list.
Select Button
Selects a parameter to change.
The change is made by rotating
the main fader knob.
OK Button
Used to store the
displayed setting in
the CP650 memory.
Mute Button
Fades down and fades up the signal
to all channels without disturbing the
current main fader setting. Flashes
red when activated to fade-down.
Bypass Power Supply Failure
Indicator
Indicates a problem is detected in the bypass
in the power supply.
Level Display
Displays fader setting. Ranges from 0.0 to
10. Normally set to 7.0.
Projector Signal Indicators
P1 and P2 show which projector’s
output is being processed by the
CP650.
Main Fader Knob
Controls sound level and is used for
menu operations and data selection
during setup. The knob rotates
continuously with no end-stops.
Setup Control Panel
Access Door
Opens using the tab on the left-
hand side. Exposes the setup
control panel for use by the service
engineer.
Format Buttons
Used to select the format:
01 Mono
04 Dolby A-Type
05 Dolby SR
10 Dolby Digital
11 External six channel input
U1 User-defined during setup
(normally Format 13)
U2 User-defined during setup
NS Normally Format 60
Nonsync 1,
(can be User-defined)
Power Supply Button
.
When this button is illuminated red, the unit is in
bypass mode, either because bypass mode has
been manually selected (by using the button) or
because a fault has been automatically detected.
In bypass mode, the unit is powered by the built-in
bypass power supply. While the main power
supply is in use, this button is not illuminated, and
the screen and other indicators operate normally
Format 10
Dolby Digital
L M1 0
Figure 3–1 Front-Panel Controls