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There are currently no product reviews.
 ;
have download a number of manuals todate , most are excellant, one or two sometimes a little difficult to read but a least avaialable, great site .
Brad.
;
Excellent had everything I wanted, very happy with purchase
 ;
This service is relatively cheap, document is fast available, schematic is readable.
Thanks.
;
So far I´m a satisfied customer. I have only downloaded "TECHNICS SX-KN470 Service Manual" maybe I will use it later.
Best regards
Peter
;
Good manual. It is complete and of high quality, both text and graphics. The schematics are with the original big size, so it can be viewed or printed without any loss of resulution and sharpness.
21KF-80C
NO PICTURE, NO SOUND
Does the noise level increase at max. Contrast, Brightness and Sound
Noise increase but . No signal is received.
No snow noise.
Check the tuner supply voltage LB must be approx 5V. BT must be approx. 32V, and CH preset data check.
Does noise or signal appear at pin40 of IC801?
Does noise or signal appear at pin38 of IC801?
Check IC801and its related circuit.
Check the Tuner AGC at TP201.
Does noise or signal appear at pin23 and 24 of IC801?
Check Q401, Q402 and its related circuit.
Check pin38 of IC801.
Check pin27 of IC801, Tuner and related circuit.
Check pin1,2 of SF201, Tuner and related circuit.
Check pin37 of IC801and related circuit.
NO SOUND
Does signal appear at pin6 of IC302 / 303?
Check IC3001and its related circuit.
Does signal appear at pin2 of IC302 / 303?
Check Speaker.
Check IC302 / 303 and peripheral circuit.
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