Ramsey Electronics CB1 CHATTERBOX, User Manual

CB-1 

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 17 

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6. Switch the voice recorder to mode 6 and address 1. Press and hold 
down the start button while talking into the microphone. Release the start 
button when you are done recording. Switch back to mode 1 and press 
the start button. Your message should be audible at the speaker. The 
decimal points of the displays should light as long as you hold the start 
button.   

 
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7. If the preceding step worked fine, try the same thing for all memory 
addresses; you should have a total of five, four second long recording 
areas. When you have saved a message in all five addresses, switch to 
mode 4, address 1 and press start. The unit should now play through all 
messages and keep the decimal point lit regardless of the start button.   

 
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8. You're all set if everything worked up to this point. Try playing around 
a bit to get familiar with the operation of this kit and how a couple of 
addresses can be combined to extend the time of a single message. A  
lot of transistors are at work in this kit and we hope you enjoy it.  Have 
fun!  

 
If any of these steps did not work as described, go to the trouble-shooting 
section of the manual to determine how to resolve the problem.  
 

TROUBLESHOOTING TIPS 

 
PROBLEM:  Neither display lights when powered up, and there is no sound. 
SOLUTION:  Use a multimeter and check to make sure you have 12VDC 
across C15, and that it is of proper polarity. If not, correct the problem by 
reversing the connections to the power supply. If it is OK check to see if you 
have 5 volts across C16. If not, check to make sure that the voltage regulator 
is in the proper direction (it's probably hot by now). If it is oriented correctly, 
turn off power and recheck all of your connections, especially anything that 
might short out the power supply.   
 
PROBLEM:  Neither display lights, but some sound is heard when start is 
pressed.   
SOLUTION:  Most everything is working. Just check everything on the 
display board and the orientation of Q6, Q5, and Q4. Also check for good 
solder connections between the display board and the main board. You may 
also check to make sure there is 5VDC on pins 3 and 4 of U1.  
 
PROBLEM:  One display lights the other does not. 
SOLUTION:  Check the microprocessor for proper orientation. If it is OK 
check C10 and R24 for proper insertion. If you have an oscilloscope you can 
look on pin 15 and 16 for about a 1-2 Mhz waveform.