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Wolfgang Sundhaus
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Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
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I was very skeptical of this website, I have never downloaded manuals before. I put it on the AMEX and payed through Paypal to ensure protection. I got the manual exactly as described and now I can replace the filter capacitor for this amp. Great Price, others selling for 12.99 or more and this is the same manual. I will search out this website for other manuals. Thank you
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Manual was reasonably easy to follow. I am not an engineer or know much about electronics but with the manuals help I was able to figure out the problem, identify the part required for the repair. Replacement part cost around $30. Whilst replacing the part I was telling myself, "this aint gonna work cos it seems far too easy". Took about 15 minutes to do and my plasma TV works a treat. Would never have been able to do this without the service manual.
XM-4060GTX SECTION 3 ELECTRICAL ADJUSTMENT
Bias Adjustment
Note : The Bias adjustment should be performed only if any of Q109 and Q110 for RV104, Q209 and Q210 for RV204, Q309 and Q310 for RV304, and Q409 and Q410 for RV404 are replaced. Setting :
stabilized power supply digital voltmeter
B+, REM terminals
set
+ _
GND terminal
test points
Procedure: 1. Rotate variable resistors RV104 (FRONT L-CH), RV204 (FRONT R-CH), RV304 (REAR L-CH) and RV404 (REAR R-CH) full clockwise as seen from the pattern side to minimize the bias current. 2. The input signal is with no signal. 3. Connect the stabilized power supply between B+ and REM terminals and gradually increase the voltage to 14.4 V while checking for any abnormal current. 4. Adjust RV104 (FRONT L-CH), RV204 (FRONT R-CH), RV304 (REAR L-CH) and RV404 (REAR R-CH) so that the digital voltmeter connected between the respective test points reads 6±1 mV. RV Ref. No. RV104 RV204 RV304 RV404 Test points TP11 and TP12 TP21 and TP22 TP31 and TP32 TP41 and TP42
5. After this adjustment, verify that the current value of the stabilized power supply is 1.4 to 1.8 A. Adjustment Location :
� MAIN BOARD (CONDUCTOR SIDE) � RV304 BIAS ADJUSTMENT (REAR L-CH) TP41 TP31TP32 TP42 TP12 RV404 BIAS ADJUSTMENT (REAR R-CH) TP11 RV104 BIAS ADJUSTMENT (FRONT L-CH) TP21 RV204 BIAS ADJUSTMENT (FRONT R-CH) TP22
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