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Very fast service, best quality of the service manual and the schematics
 ;
This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
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Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
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This schema available for me in good condition. I would highly recommend.
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Thanks for this "hard to find" service manual.
I apreciate the good quality of scanning and the pages scanned in A3 format.
5
6
7
8
A
K
IC401 (Pin 4) IC201 (Pin 6) Is there a LR clock ? Yes IC201 (Pin 77) BCKO Is there abnormality at the parts and patterns in the path? Yes IC401 (Pin 9) Is there a bit clock ? Yes IC401 (Pin 2) No No No Is there abnormality at the parts and patterns in the path? No Replace IC401.
Check the following points when the source is compression or DVD-A. SDTO Is there abnormality at the parts and patterns in the path?
Is there No a audio data (with Sch source)?
No
Failure in 2nd DSP block, Go to Step 9. Is there abnormality at the parts and patterns in the path?
B
Is there No a audio data (with Sch source)? Yes IC201 (Pin 5) CDTO
No Replace IC401.
Failure in 2nd DSP block, Go to Step 9.
Is there a bit clock ? Yes IC201 (Pin 7)
No
Is there abnormality at the parts and patterns in the path?
No Replace IC401. Is there No a audio data (with Cch source)? Yes IC401 (Pin 10) Is there abnormality at the parts and patterns in the path? No
C
FDTO Is there abnormality at the parts and patterns in the path?
Failure in 2nd DSP block, Go to Step 9.
Is there a audio data ? Yes IC401 (Pin 3)
No
No Is there No a audio data (with Cch source)? Yes IC201 (Pin 4) BDTO
D
Failure in 2nd DSP block, Go to Step 9.
Is there abnormality at the parts and patterns in the path?
No
Replace IC401.
Is there a audio data ? Yes
No
Is there abnormality at the parts and patterns in the path?
No Replace IC401. Is there No a audio data (with SBch source)? Yes IC401 (Pin 11) Is there abnormality at the parts and patterns in the path? No
IC401 (Pins 25,24) FLO, FRO
Failure in 2nd DSP block, Go to Step 9. Is there abnormality at the parts and patterns in the path?
Is there a analog audio output? Yes
No Check the parts and patterns (short-circuit) in the path including the DSP assy and others. No Replace IC401.
Is there No a audio data (with SBch source)? Yes
No
Replace IC401.
E
Is there a analog audio output at CN402-pins 7 and 5? Yes Is not there poor contact in CN402-pins 7 and 5? Yes
No Check the parts and patterns in the path on the DSP assy.
IC401 (Pins 22,21) SLO, SRO
Is there a analog audio output (with Sch source)? No Replace CN402. Yes
No
Check the parts and patterns (short-circuit) in the path including the DSP assy and others. No Replace IC401.
F
L
VSX-2016AV-S
5 6 7 8
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