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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.
Adjustments
1. TAPE SECTION
Output Level Measurement Point R-CH
Output Level
Input Point Scope 47 kohm VTVM
Input Level Measurement Point L-CH 47 kohm
Test Tape be used
Tape MTT-111N MTT-114N MTT-5511 Contents 3 KHz 10 KHz Blank Use Tape Speed Adjustment Head Azimuth Adjustment Record Frequency Property
1. 2. 3. 4. 5. 1. 2. 3.
HEAD ADJUSTMENT (AZIMUTH) 10KHz test tape(example: MTT-114N) must be used for this adjustment. Connect to VTVM or oscilloscope to the headphone jack or speaker terminal. Press the play button. Adjust the azimuth by using a screw driver to maintain the max. L&R output voltage. Adjust tape A(1), tape B(2) respectively, Please secure the azimuth position by using locking paint. RECORDING BIAS OSCILLATOR FREQUENCY ADJUSTMENT Connect the frequency counter to TP603, GND. Press the REC button. Adjust L603 to obtain 80 KHz±100Hz
Step Item TAPE ALIGNMENT CHART Reference Value Test Tape Adjust Point 3,015~3,025Hz Normal 1 Tape Speed Adjustment High 2 3 Azimuth Adjustment Recording Bias Oscillator Frequency Adjustment 3,000~3,010Hz MTT-111N RV601 MTT-111N RV601 Test Point Line Out L/R Channel Line Out L/R Channel Shorted TP601, TP602 Line Out L/R Channel TP603,GND Adjust with frequency counter connected. Note Confirm Wow & Flutter is within 0.35% Confirm Tape Speed of end position after adjustment at tape start position Confirm High speed after normal speed adjustment FIG. FIG.1 FIG.1
5,820~6,180Hz Maximum Level Phase:Within90° 80 KHz±0.5
MTT-111N MTT-114N MTT-5511
-----Head Screw L603
FIG.1 FIG.2,3,4 FIG.1
Test Tape : MTT-111N(3kHz) MTT-5511(Blank) Set
Frequency Counter
Adjust with Frequency Counter Connected
Output Level Measurement Point
Forward Side
Reverse Side
FIG. 1 : Tape Speed & Record Bias Oscillator Frequency Adjust Circuit
L-CH Peak within 1 dB R-CH Peak within 1 dB
FIG. 2 : Tape Azimuth Adjust Location (Record/Playback Head)
Test Tape MTT-114N (10kHz) L-CH Oscilloscope
Set
V
H
Screw Angle
Output Level Measurement Point Screen Pattern
L-CH Peak
R-CH Peak
Screw Angle
In Phase 45 Good
90
135
180
Wrong
FIG. 3 : Tape Azimuth Adjust Head Screw & Waveform
-4-
FIG. 4 : Tape Azimuth Adjust Circuit & Waveform
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