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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.
and overviews
6
Fault finding trees, diagrams and overviews
START
Remark : In normal operation the Red LED lights in half intensity and in standby-mode the LED lights in full intensity
L9.1E
17
6
Fault finding trees, diagrams
Connect a pattern generator to the arial input. Set Patt.gen. to 475,25 MHz, colourbar, stereosound, PAL B/G (for France SECAM l). Put the Mainsswitch : on. In normal conditions the set will start with the Red LED blinking for one second in full intensity, one time then after a few seconds more in half intensity while the picture and sound will appear.
1111 Does the red LED blink for one second in full intensity, one time ?
Yes Yes No
Does the red LED light in full intensity continuously ?
No
Is the Power supply hicking ?
No
Any secondary voltage present ?
No
(A1); <P1> present?
Yes
No
Check/Replace (A1); SW0231,F1500,D6505 Note: If F1500 is defective, then also check R3503
Yes
1713
111D Do picture and sound appear properly ?
Yes No
A
Yes
Ensure communication with the RC, Check/Replace (A8);IC7680 Put the set into the Service Default Mode either via the DST or by pressing the buttons on the RC in the following order :062596<MENU>, or via the service pins An error code is indicated by the blinking LED via the SDM. n-times blinking means error n. See also chapter 5.5 for detailled information
The load of the power supply is too high. Isolate each branch of the load one by one, until the hicking disappear. Continue with the fault finding for the branch, which causes the overload. The branches are: (A1); AudioSupply +VBATT MainSupply Vaux
Check (A7); <C1>,<C4(reset)> 3V3, Check/Replace TS7603,TS7604 IC7600 X1660 (A8);LED6690
1111 (A1); <P2> startpuls present?
No
(A1);<P3> Voltage present?
Yes
No
Check/Replace (A1); D6540,C2540,D6510, R3510,R3529
Yes
111A Check/Replace (A1); IC7520 R3525
1111 Check/Replace (A1); TS7518,L5552
No
(A1); voltage on TR5545 pin9 present ?
Yes
111A Check/Replace (A1); L5540,D6540,C2540 Vaux,F1572,L5573,D6560 IC7581 Note 1: IRIS SYMPTOM CODE 111A
Set is OK Check / correct Options list via CSM see chapter 5.5 of this manual for details
No
1 Is there an error indication ?
11
A
Condition code
Main symptom code
Extended symptom code
Yes
B
Note 2: (A1) means Drawing A1 <P1> means Test point P1
CL 86532104_034.eps 190299
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