Tandberg TPA 3006 A Service Manual
This is the 8 pages manual for Tandberg TPA 3006 A Service Manual.
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Extracted text from Tandberg TPA 3006 A Service Manual (Ocr-read)
Page 1
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Page 2
Checking the speaker protection relay - Disconnect speaker load. - Apply 6 to 8 V d.c. with 220 kohm in series (+ and - alternatelv) to R508/R509. The relay should then open. The power supply board seen from the solder side NOTE! lnput FET's 0103/0104 and O203/O2O4 are matched pairs, and should be.replaced with the same group. Each matched pair of transistors needs a spesific value of source resistors (written by hand on the pc board). After replacing the FET's, check for correct current. The voltage across R147 /R247 should be 2.2Y t 0.2 V. All measurements in the amplifier must be made with a probe having minimum 5 kohms. Peak clipping Adjust R1371R237 to minimum tight in LED at slight dipping. 220 kohm +or-8V ' *.4 t,-Et t tHt€_--lq I tu ' frItsor' I -l - a I =5rl 9IYE;- B' o o f,1ot'1fir/l.oI t617 +(!lgc 'fgt4 r&i ;.GII3 ? bEqF\ fl+ffilf R6os T.cRsos-.c5or\l' o.r, - . -10-' ErY 1" ffi*"'%1 /g ,ffiffiF!{i ;;'+;gsHBHHt{ F