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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.).
 ;
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.
2-4. White Balance Adjustment on Servicing
2-4-1. White Balance Adjustment
Input the 10 STEP signal to INPUT-A, and observe the chromaticity of each luminance. When varying the chromaticity of each luminance, perform the following adjustments. 1) MID Mode of INPUT-A 1. 2. 3. 4. Input the 100 IRE FLAT FIELD signal to INPUT-A. Measure the chromaticity (x, y). Input the 80 IRE FLAT FIELD signal to INPUT-A. Adjust the chromaticity (x, y) to the values measured in step 2, by the GAIN R and B of W/B MID mode. 5. Set the INPUT signal to the 30 IRE FLAT FIELD signal. 6. Adjust the chromaticity (x, y) to the values measured in step 2, by the BIAS R and B. 7. Repeat above steps 3 to 6 until the chromaticity become the following values. x ± 0.002, y ± 0.004 (The x and y are the values measured in step 2.) 2) HIGH Mode of INPUT-A 1. Input the 80 IRE FLAT FIELD signal to INPUT-A. 2. Set the GAIN G to MID mode value at �_20� with the HIGH mode of the W/B. 3. Set the BIAS R, G and B that are equal to MID mode values. (Set the BIAS R, G and B to the same as MID mode values.) 4. Input the 30 IRE signal to INPUT-A. 5. Adjust the chromaticity (x at 0.284, y at 0.298) values by the BIAS R and B of W/B HIGH mode. 6. Input the 80 IRE signal to INPUT-A. 7. Adjust the chromaticity (x at 0.284, y at 0.298) values by the GAIN R and B. 8. Repeat above steps 4. to 7. until the chromaticity become the following values. x: 0.284± 0.002, y: 0.298± 0.004
3) LOW Mode of INPUT-A 1. Input the 80 IRE FLAT FIELD signal to INPUT-A. 2. Set the GAIN R that is equal to MID mode value. (Set the GAIN R to the same as MID mode value.) 3. Set the BIAS R, G and B that are equal to MID mode value. (Set the BIAS R, G and B to the same as MID mode value). 4. Input the 30 IRE signal to INPUT-A. 5. Adjust the chromaticity (x at 0.313, y at 0.329) values by the BIAS R and B of W/B LOW mode. 6. Input the 80 IRE signal to INPUT-A. 7. Adjust the chromaticity (x at 0.313, y at 0.329) values by the GAIN G and B. 8. Repeat above steps 4 to 7 until the chromaticity become the following values. x: 0.313± 0.002, y: 0.329± 0.004 4) MID/HIGH/LOW Mode of VIDEO 1. Input the VIDEO signal of NTSC or PAL. 2. Set the BIAS R, G and B and GAIN R, G and B of MID, HIGH and LOW mode of W/B that are equal to the values of corresponding items in INPUT-A. (Altogether 18 items) 3. Set the GAIN G only of MID mode of W/B value at �_16� in INPUT-A.
2-5. Tilt Adjustment
n Do not put the unit upward and downward in the vertical direction for more than ten seconds. 1. 2. 3. 4. 5. 6. 7. 8. Set the Factory mode to �Device Adjust/OTHER�. Set the adjuster in contracted position. Then, enter the X TILT value to C0. Set the unit upward in vertically. Then, enter the X TILT value to C1. Set the unit downward in vertically. Then, enter the X TILT value to C2. Save the each values of C0, C1 and C2 described in step3, 5 and 7.
2-8
VPL-HS10
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