It does not start, gives one long beep (about 2-3 seconds) silence and beep again

Not knowing what brand makes it tough, most of the time if you push any key it should silence it.

send the detector back and have it replaced,
The CO sensor will not alarm to levels of CO below 30 ppm and will alarm in the following time range when exposed to the corresponding levels of CO: 70 ppm CO Concentration 60 - 240 minutes 150 ppm CO Concentration 10 - 50 minutes 400 ppm CO Concentration 4 - 15 minutes The alarm shall include a piezoelectric horn that is rated at 85 decibels at 10 feet. When the unit detects carbon monoxide, the alarm pattern will be four (4) short beeps - followed by five (5) seconds of silence - followed by four (4) short beeps. The unit shall incorporate 2 LED's. A green LED will be illuminated to indicate the alarm is operating properly when plugged into an outlet, and will flash every 10 seconds when on backup battery power. A red LED will flash to indicate that carbon monoxide has been detected until the device is reset or CO is eliminated or will flash to indicate low battery or alarm malfunction. The unit shall at a minimum meet the requirements of CAN/CSA 6.19-01. It shall also include a 10-year manufacturer's limited warranty or

Test/Reset Button - Tests the unit for proper operation. Resets the carbon monoxide alarm.
• Tamper Resist Feature - If activated, unit goes into constant alarm mode if it has been unplugged or has come loose from the outlet.

A beep tone will activate when selecting the HWS buzzer
alarm.
The alarm beep will become shoter and shoter every
15 seconds for one minute followed by one minute silence
before repeating the cycle.
The HWS alarm will sound for one hour until turning off by
pressing the Power button. Press the Power button whilst
the alarm is activated will cancel the alarm for 24 hours.
1. The HWS buzzer alarm can be set either radio is on or
off.
2. Press and release the HWS buzzer alarm button
, the symbol will flash.
3. During the symbol flashes, long pressing the
button for more than 2 seconds followed by a beep
and display Hour digit will flash.
4. Rotate Tuning Control to select required alarm hour,
then press time set button again. The minute
digit will then flash.
5. Rotate Tuning Control to select required alarm minute,
the press time set button again to complete HWS
buzzer alarm setting.
6. Press and hold down buzzer alarm button for
more than 2 seconds followed by a beep to switch on
or off the HWS buzzer alarm.
Display will appear when buzzer alarm has
been set.

Solution for Fax1360, if this does not work please let me know as this process should be the same.

Recording an outgoing message (OGM) on an external TAD 7

Timing is important in recording this message. The message sets up the ways to handle both manual and automatic fax reception.

a Record 5 seconds of silence at the beginning of your message. (This allows your machine time to listen for the fax CNG tones of automatic transmissions before they stop.)

b Limit your speaking to 20 seconds.

c End your 20-second message by giving your Fax Receive Code for people sending manual faxes. For example: 'After the beep, leave a message or send a fax by pressing *5 1 and Start.'

Recommendation: recommend beginning your OGM with an initial 5-second silence because the machine cannot hear fax tones over a resonant or loud voice. You may try omitting this pause, but if your machine has trouble receiving, then you must rerecord the OGM to include it.

Christy

Is it fixed yet?

your mobo might be broken. Try to uptate or recover bios. it can be done when changing jumpers on mobo. read mobo book for excat settings

TAKE YOUR DDR CARDS OUT ,, AND SWITCH THEM,, ,,IF THAT DOESNT WORK TRY WITH ONE AT A TIME,, GOOD LUCK

Beep Codes:

click this link: http://www.intel.com/support/motherboards/desktop/sb/cs-010249.htm

Emma:

Is there a reset button on it? If so, press that. There are also sequences of buttons which one has to push to reset it. These are kept secret. Try pressing Hi Temp and Heated Dry, turn loose and press again within Five seconds. Or turn off the electricity and see if that resets it

here is a list of packard bell beep codes with meanings
http://www.uktsupport.co.uk/pb/mb/phnxcode.htm
Hope it helps you