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640Razur
27
ENGLISH
The 640R features Control Bus inputs and outputs that
allow un-modulated remote control commands
(positive logic, TTL level) to be received electrically by
the unit. These control commands are typically
generated by custom installation (multi-room) systems
or remote IR receiver systems. The Control Bus sockets
are colour-coded orange.
An IR Emitter Input is also provided that allows modulated IR remote
control commands to be received electrically by the unit. Commands on
this input operate the unit only and are not looped out
demodulated on the Control Bus Output. An RS232 port is
also featured which allows the 640R to be controlled by C.I.
systems.
In addition the unit features 'direct' IR/Control codes as well as toggle
codes for some of their features to simplify programming custom
installation systems. Special direct On/Off and Mute commands can be
accessed on the supplied remote control for teaching into C.I. systems
as follows:
1. Press and hold the Standby/On button on the remote control. The
remote first generates it's standby (toggle) command. Keep the
button held down, after 12 seconds an AV receiver “On” command
will be generated. If the button is kept held down for a further 12
seconds, an AV receiver “Off” command is generated.
Repeat this procedure with the Mute, Sub On/Off, Stereo Mono and
Tuner AM/FM buttons to send On/Off commands. The Tuner AM/FM
button also provides unique FM and AM commands to allow switching to
a specific band.
A full code table and RS232 protocol for this product is available on the
Cambridge Audio website at
www.cambridge-aaudio.com
.
The 640R has a function that preserves the preset memory and other
settings. In the event of a power failure, or if the power cord of the unit
is disconnected from the mains outlet, the back-up memory will
preserve the preset memory for approximately one week. If the power
supply is interrupted for 7 days or longer, the memory settings will be
erased.
If it is desired to reset all settings to their factory defaults (or in the
unlikely event that the unit locks up due to an electrical discharge etc),
with the unit on and out of Standby mode press and hold the DVD and
Analog Stereo Direct buttons on the front panel for three seconds.
“RESET” will appear briefly on the front panel display before returning to
Standby mode.
Reset/Back-up memory
Tuning Mode/Store
DVD Video 1
Stereo
Modes
Dolby Digital/
DTS Surround
Modes
Pro Logic/Neo/
DSP Surround
Modes
Video
Input Type
Audio
Audio
Input Type
Video 2 Recorder 1 Aux CD Recorder 2 7.1 Direct
–+
Analog
Stereo Direct
Tuner FM/AM
Video 3 L R
Digital Processing Options
Custom installation (C.I.) use
Control
Bus
InIn
Emitter
Out
RS232C
A low hum or buzz sound can be heard
Power cords or lighting placed near this product.
Analog inputs not connected securely.
Sound is not audible from one channel
Speaker connections disconnected.
Speaker set to “None” in OSD setup menu.
Sound cuts off when listening to music or there is no
sound even though power is ON
Speaker impedance is less than prescribed for the 640R.
The unit is not adequately ventilated and may be overheating.
Low bass or “phasey” response
Speaker polarity (+/-) of one or more speakers is reversed.
An unusual hissing noise is heard when listening to a
radio broadcast in stereo, but not heard when listening in
mono
A slight noise may be heard because the method used for modulation of
FM stereo broadcasts is different than that used for mono broadcasts.
Aerial quality also effects the level of hiss heard.
Noise is excessive in both stereo and monaural radio
broadcasts
Poor location and/or direction of the antenna.
Transmitting station is too far away.
No sound from the rear speakers
Source being played is not recorded in surround sound.
Speaker/s set to “None” in OSD setup menu.
A stereo mode has been selected.
No sound from the centre speaker
Centre speaker has been set to “None” in OSD setup menu.
A stereo mode has been selected.
No sound from the subwoofer
Sub has been set to ‘Off’ in the OSD setup menu or via the remote.
DTS Neo:6, DD PLII/IIx modes (which have no LFE channel) have been
selected with all speakers set to “Large”.
Remote control is not working
The batteries are flat.
The remote is too far from the receiver or out of the effective range.
No sound from speakers when connected to a digital
input
Audio input type is set to analogue (check display). Press the Audio Input
Type button to switch to digital.
No sound from speakers when connected to an analogue
input
Audio input type is set to digital. Press the Audio Input Type button to
switch to analogue (check display).
Audio input type can also be set in the Input/Output Setup menu of the
OSD.
Troubleshooting