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I am a vintage hifi collector. No way to fix that device without the appropriate service manual...thanks to your site I got it and every thing is easier now. I got the manual right after ordering: fast cheap accurate ... thank you
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Wonderful job clear. Qick fantastic. These people are really good. If even a problem arise they are wonderful assisting you. These scheme is so net despite this is a very old TV. Thank you for everything!!!!!!!!
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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
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Block diagram,play rec block diagram,adjusments, it's a very good well done repair manual.
ELECTRICAL ADJUSTMENT
TUNER C.B
FFE801
3
6
IC BLOCK DIAGRAM IC, BU4094BCF
TP6
4
L772 TP1 L981
L771
TP3 TP2 1/3 TP4
IC771 TP5
4
< TUNER SECTION >
1. Clock Frequency Check Settings: � Test point: TP2 (CLK IC771 pin30) Method: Set to AM 1710kHz and check that the test point becomes 2160kHz±45Hz. 2. AM VT Check Settings: � Test point: TP1 (VT) Method: Set to AM 1710kHz and check that the test point is less than 8.5V. Then set to AM 530kHz and check that the test point is more than 0.6V. 3. AM IF Adjustment Settings: � Test point: TP5, TP6 L772 .............................................. 450kHz 4. AM Tracking Adjustment Settings: � Test point: TP5, TP6 � Adjustment location: L981 (1/3) Method: Set to AM 999kHz and adjust L981 so that the test point becomes maximum. 5. FM VT Check Settings: � Test point: TP1 (VT) Method: Set to FM 87.5MHz, 108.0MHz and check that the test point is more than 0.5V (87.5MHz) and less than 8.0V (108.0MHz). 6. DC Balance/Mono Distortion Adjustment Settings: � Test point: TP3, TP4 � Adjustment location: L771 � Input level: 60dB Method: Set to FM 98.0MHz and adjust L771 so that the voltage between TP3 and TP4 becomes 0V±0.04V. Next, check that the distortion is less than 1.3%.
IC, M62431FP
PRACTICAL SERVICE FIGURE
< TUNER SECTION >
<FM SECTION> Signal to noise ratio: Distortion: (Input: 60dB) Stereo separation: Intermediate frequency: <AM SECTION> Sensitivity: (S/N 20dB) Signal to noise ratio: (Input: 74dB) Distortion: Intermediate frequency: More than 62dB (at 98.0MHz) Less than 2.0% (at 98.0MHz) More than 22dB (at 98.0MHz) 10.7MHz
Less than 60dB (at 600kHz) Less than 58dB (at 1000/1400kHz) More than 36dB (at 1000kHz) Less than 1.5% (at 1000kHz) 450kHz
IC, M62439SP
35
36
$4.99 AVD55 AIWA Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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