User's Manual
Theory of Operation
TDS 310, TDS 320 & TDS 350 Service Manual
3Ć11
%."" +*0.+( (&*"/ 0+ )1(0&,("4"./ *! /"(" 0 0%" ,+0 &*,10 +.
3&,". 2+(0$" 0+ " ."! %" *(+$ 2+(0$" 0 0%" 3&,". +# 0%" ,+0 /"(" 0"!
&/ ,,(&"! 0+ 0%" #.+*08,*"( ,.+ "//+. %&/ 2+(0$" &/ !&$&0&6"! *! 0%"
)+1*0 *! !&." 0&+* +# %*$" #.+) 0%" ,."2&+1/(5 /0+."! 2(1" &/
( 1(0"! %" %*$" &*#+.)0&+* &/ /"*0 0+ 0%"
%" #.+*08,*"( ,.+ "//+. $"*".0"/ %" %&$% ("2"( &/
,,.+4&)0"(5 *! 0%" (+3 ("2"( &/ 0 $.+1*!
Switches 7
%" #.+*08,*"( /3&0 %"/ *! )"*1 /3&0 %"/ ." ..*$"! &* * ..5 +#
"&$%0 .+3/ *! +(1)*/ %"* /3&0 % (+/"/ +*" .+3 (&*" +**" 0/ 0+
+*" +(1)* (&*" 0%.+1$% * &/+(0&+* !&+!" +),("0" / * +# 0%"
#.+*08,*"( /3&0 %"/ +*/&/0/ +# /"00&*$ (( "&$%0 .+3 (&*"/ (+3 &* /"-1"* "
*! ,".#+.)&*$ * "&$%08 +(1)* / * 0+ %" ' #+. %*$" #.+) 0%" /00"
/0+."! &* 0%" #.+*08,*"( ,.+ "//+. +3 &0/ &* 0%" +(1)*8(&*" !0 0"(( 0%"
#.+*08,*"( ,.+ "//+. 0%0 /3&0 % &/ (+/"!
LEDs and Power Supply 7
%" / ." ..*$"! &* $.+1,/ +# "&$%0 %"5 ." +**" 0"! "03""* 0%"
+10,10/ +# 8&0 (0 % %"* 0%" *""!/ 0+ 01.* ,.0& 1(.
+* +. +## &0 /"*!/ +))*! 0+ 0%" #.+*08,*"( ,.+ "//+. &*!& 0&*$
3%0 0+ !+ 0+ 0%" *! 3%& % +*" 0+ %*$" %" #.+*08,*"( ,.+ "//+.
+*2".0/ 0%" &!"*0&#& 0&+* *1)". 0+ 0%" !!."// 3&0%&* 0%" (0 %
%" +3 +(0$" +3". 1,,(5 &/ /3&0 %&*$ ,+3". +*2".0". 0
/1,,(&"/ ,+3". 0+ (( 0%" &. 1&0.5 &* 0%" +/ &((+/ +,"
%" +3 +(0$" +3". 1,,(5 !+"/ *+0 %2" )&* ,+3". /3&0 % %"
ON/STBY /3&0 % (+ 0"! +* 0%" #.+*0 ,*"( +*0.+(/ (( 0%" ,+3". 0+ 0%"
+/ &((+/ +," "4 ",0 0%" /0*!5 &. 1&0/ &* 0%" +3 +(0$" +3". 1,,(5
%" +*&0+. //")(5 !&/,(5/ (( &*#+.)0&+* 32"#+.)/ 0"40
$.0& 1("/ *! ,& 0+$.,%/ 0 $"*".0"/ 0%" %&$% 2+(0$"/ *" "//.5 0+
!.&2" 0%" !&/,(5 01" 0 (/+ +*0&*/ 0%" 2&!"+ ),(&#&". %+.&6+*0(
+/ &((0+. *! 0%" 2".0& ( *! %+.&6+*0( 5+'" !.&2". &. 1&0.5
%" 5 ,&4"( ./0". / * 0%+!"8.5 01" !&/,(5 %/ 6
#.)" *! '6 (&*" .0"/ %&/ !&/,(5 &. 1&0.5 &/ /&)&(. 0+
0"("2&/&+* )+*&0+.
Inputs, Video, and Vertical DeflectionĂĂ
%" 7 ."$1(0+. &/ 0%.""80".)&*( ."$1(0+.
A20 Low Voltage
Power Supply
A26 Monitor
Assembly