I was given a cobra 757 and do not know what the codes are it will say x1 and beep and others .is there a list of codes so i will know what is going on and do i have to program this to work in my area.
X stands for wide band radars(easy to detect,lots of false alarms) K/Ka stands for pulse band radars(similar signal has auto doors) W,L stands for laser detection (very little false signals) Ku stands for signal most used on speed cameras V stands for radar detectors detector Have in mind that you can only lower your speed 20-30 km/h in city zones, and up to 50 km/h on highway.This depends on car,brakes and You.
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Here is a list of beep codes, this may help determine the problem wit your system. 1. Keyboard 2. System Board1-4-X Error detected in first 64 KB of RAM.1. Memory Module 2. System Board2-1-1, 2-1-21. Run Setup 2. System Board2-1-X First 64 KB of RAM failed.1. Memory Module 2. System Board2-2-21. Video Adapter (if installed) 2. System Board2-2-X First 64 KB of RAM failed.1. Memory Module 2. System Board2-3-X1. Memory Module 2. System Board2-4-X1. Run Setup 2. Memory Module 3. System Board3-1-X DMA register failed.1. System Board3-2-4 Keyboard controller failed.1. System Board 2. Keyboard3-3-4 Screen initialization failed.1. Video Adapter (if installed) 2. System Board 3. Display3-4-1 Screen retrace lest detected an error.1. Video Adapter (if installed) 2. System Board 3. Display3-4-2 POST is searching for video ROM.1. Video Adapter (if installed) 2. System Board41. Video Adapter (if installed) 2. System BoardAll other beep code sequences.1. System BoardOne long and one short beep during POST. Base 640 KB memory error or shadow RAM error.1. Memory Module 2. System BoardOne long beep and two or three short beeps during POST.(Video error)1. Video Adapter (if installed) 2. System BoardThree short beeps during POST.1. See "System board memory" on page 62. 2. System BoardContinuous beep.1. System BoardRepeating short beeps.1. Keyboard stuck key? 2. Keyboard Cable 3. System Board
By Codes do you mean the X, K and Ka signals that the unit is reporting? If so, those are the 3 bands used for police radar. X is the oldest and not used very much. K is also an older band. Ka however is the newer band and the most used for speed tracking.
The x-band is the considered a "trash band". It picks up things like automatic doors at supermarkets and such. About every radar detector made has an X band for non-police radar. There is no way to turn this band off on the XRS-757.
Holding down the dim button for 2 seconds turns the V alert on/off
Holding down the city button for 2 seconds turns the Spectra on/off
Holding both city and dim together for 2 seconds turns K and Ku band on/off.
There are 2 options for power plugs that can be purchased from Cobra for the 757. The straight 12V power cord is listed under item number: 420-030-N-001 and the coiled 12V power cord is listed under item number: 420-026-N-001. Both can be purchased from Cobra by calling their order line at: 773-889-3087 or visiting www.cobra.com
I called cobra support(777-889-3087) and it was around $6 plus shipping for a replacement speaker. the correct phone number for cobra support is 773-889-3087 and can be found on their website.
Cobra was very courtious and I also got my replacement speaker for my XRS-9500.!