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There are currently no product reviews.
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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.
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Hard to find manual was ready the next day. Scans were very legible (including schematics). All the essential parts of the service manual were present (adjustment procedure, schematics, and parts list). It would have been nice if the rest of the manual was included (disassembly procedure, theory of operation, etc.).
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The Service Manual for the Kenwood KR-V55R provided by owner-manuals.com was as described/advertised. The contents provided the necessary information to effect a diagnosis of the unit. The schematics above all else was instrumental in tracing the the signal flow from component to component.
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This manual was the factory original. Excellent value and contained all the details I needed. Easy dowwnload provided the information when I needed it.
DVP-CX985V
4-11-4. The product itself is defective. � If MB does not have any problem, The board other than MB board is defective or connection is defective or optical pickup block is defective or mechanism deck is defective 1. FL display does not light when the POWER button is pressed. 1-1. Check the EVER -11V (pin-2), EVER +11V (pin-qd), EVER +3.3V (pin-qa), SW +5V (pin-qs) voltage at CN201 of the power supply block If voltage is abnormal. t The power supply block is defective. 1-2. Check if the fuse on the power block has blown of not. If the fuse has blown t Replace the fuse. 1-3. Check the P-CONT (pin-1) at CN205 of the AV board when the POWER button is pressed. If it remains at �L�, t The signal line has the defective soldering or it is shortcircuited with other signal lines or capacitor or resistor is defective or IFCON is defective or connection between the power supply block and the AV board is defective, or connector installation is defective, or the power supply block is defective. 1-4. Check if the button is kept depressed in the IFCON self mode. If the button is kept depressed. t The front panel is defective, or PANEL-L board is defective. 1-5. Check PON_CHECK (pin-og) of IFCON (IC1003) on the PANEL-L board. If it is 0.5 V or more. t The power supply is defective, or PANEL-L board is defective. 1-6. Check FL1001 (pin-1 & pin-rj) on the PANEL-L board. If no voltage supply t DC/DC converter (T1081) defective, or the PANEL-L board is defective. 2. FL display light once and becomes not light when POWER button is pressed. 2-1. Check CN201 voltage of the power supply block when the FL display light on. If voltage is abnormal. t The power supply block is defective, or the PANEL-L board is defective, or MB board is defective. 2-2. Check XFRRST (pin-2) at CN102 on the MB board. If it is fixed to �L�. t The signal line has defective soldering, or is short-circuited with other signal lines, or parts are defective.
2-3. Check XIFBUSY (pin-3), XIFCS (pin-4), SI0 (pin5), SO0 (pin-6) and SC0 (pin-7) at CN102 If they are fixed to �H� or �L�. t The signal line has defective soldering, or is short-circuited with other signal line, or parts are defective, or SYSCON (IC104) is defective If they change between �L/H�. Connector installation is defective, or the PANEL-L board is defective, or SYSCON (IC104) is defective. If they stay in the center voltage. Poor connection of flexible wiring board such as it is inserted in an angle diagonally, or defective soldering, or is short-circuited with other signal line. 2-4. Check PON_CHECK (pin-og) of IFCON (IC1003) on the PANEL-L board. If rise-up time from 0.5 V to 1.5 V or more takes longer time, or it does not exceed 1.5 V or more. t The PANEL-L board is defective. 3. Both picture and audio are not output. Connection between the power supply block and the AV board is defective, or connection between the AV board and the MB board is defective, or connector installation is defective, or AV board is defective. 4. Picture is not normal. (Block noise or others appear.) The MB board AVD (IC403) or SDRAM (IC404, IC405) is defective, or ARP & SERVO (IC301) is defective.
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