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I'm happy. Good quality. Very helped me with my work..............................
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This is the second Manual I have ordered from owner-manuals, I give it five stars because it is exactly what I expected given the age of the equipment. So the contents look a bit aged and the pictures a bit grainy, it fulfills my needs and I am glad I can still get hold of them.
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thank u so much for this manual that was so cheap that i thought it was a scam but i gambled anyway because it was too good of a deal to pass up and behold,the manual has everything and details of everything even the screws and im still amazed and very happy with my manual .so take my word and jump on it before they realize how cheap they selling thier manuals..thank you so much for taking time to read my thoughts
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I do not have very much to say.
The price is quite covenient, delivery was better as promised (about 12 ours, against the specified 24 hours if I remember well), and the quality of the PDF is more than acceptable.
The Service Manual of Sansui R30 itself is also satisfactory: good graphic for schematics and layouts, simple and well structured.
Giovanni Bianchi
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Happy to find finally a schematic for this amplifier. The schematic is of good quality, the pcb layout is useless: all is black. Never the less, it is very easy to find the components on the board using the schematics.
4 Troubleshooting
4-2 No Video
Power indicator is green
Does the clock pulse appear at Pin 81, 83 and 84 of IC201?
No
5
Does the H-sync pulse appear at Pin 94 of IC201?
No
6
7
Does the pulse appear at Pin 9 of IC106 or Pin 1 of IC105? Yes
No
Yes Yes Replace IC201.
Replace IC106. Replace IC104 (SOG) or check R102 and Pin 13 of CN201 No Check IC201 and IC401.
9
10
Does the sync pulses appear at Pins 20 and 22 of IC303?
No
11
1
Does the sync pulses appear at Pins 34 and 39 of IC303? Yes
Yes
Replace IC303 or check its related circuit.
Do the sync pulses appear at Pins 25 and 26 of IC304?
2
3
No
8
Do the sync pulses appear at Pins 141 and 142 of IC301? Yes
No
Replace IC301 or check its related circuit.
Yes
Replace IC304 and IC305 or check its related circuit.
Do the waveforms appear at Pins 1 and 16 of CN301? Yes Replace LCD Panel
4
No
Replace IC304 and IC305 or check its related circuits.
4-2
SyncMaster 470STFT
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