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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
Mi spiace per non poter scrivere in inglese... ma sono veramente soddisfatto del servizio offerto. Grazie..!!
The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
Quick site processing. A complete and very useful manual with all details. Thank you!
Das Service Manual war von der ersten bis zur letzten Seite sehr informativ und hilfreich. Die Darstellung aller Teile war klar und der Text gut lesbar.
Vielen Dank, das war nicht der letzte Download bei ownner-manuals.com.
3-4-2. Normal Audio System Adjustment â¢ Make adjustment in the SP mode, unless otherwise specified. Use a normal VHS cassette for an adjustment tape. â¢ Set AUDIO MONITOR to normal. [Adjustment Sequence] 1. 2. 3. 4. ACE Head Adjustment E-E Output Level Check Frequency Responce Check Overall Level Characteristic and Distortion Factor Check 5. Overall S/N Check 1. ACE Head Adjustment Refer to the service manual of VHS MECHANICAL ADJUSTMENT VI. 2. E-E Output Level Check Purpose: Confirm that the output level against the reference input is within the specification. Mode Signal Measurement point Measurement equipment Specified value E-E L, R: 400 Hz, â7.5 dBs Audio output terminal Audio level meter â7.5 Â± 2 dBs
4. Overall Level Characteristic and Distortion Factor Check Purpose: Check the record level, play level, and distortion factor against the reference input. Mode Signal Measurement point Measurement equipment Specified value REC and PB (SP mode) 400 Hz, â7.5 dBs Audio output terminal Audio level meter and distortion factor meter Playback level: â7.5 Â± 4 dBs Distortion factor: 4% or less
PARTS ARRANGEMENT DIAGRAM FOR ADJUSTMENTS
MA-325 BOARD (Side A)
Confirmation Method: 1) Supply an audio signal of 400 Hz, â7.5 dBs simultaneously to both L and R channels of Audio Line Input. 2) Make recording 3) Play back a recorded portion. 4) Confirm that a playback level is â7.5 Â± 4 dBs. 5) Confirm that a distortion factor is within 4%. 5. Overall S/N Check Purpose: Confirm that the S/N is within the specification. Mode Signal Measurement point Measurement equipment Specified value REC and PB (SP mode) Short Audio output terminal Audio noise meter â46.0 dBs or less
Confirmation Method: 1) Simultaneously input a signal of 400 Hz, â7.5 dBs to both L and R channels of Audio Line Input. 2) Confirm that the audio output level is â7.5 Â± 2 dBs. 3. Frequency Responce Check Purpose: Confirm that the frequency characteristic is within the specification. Mode Signal Measurement point Measurement equipment Specified value REC and PB (SP mode) 400 Hz, â30.0 dBs 7 kHz, â30.0 dBs Audio output terminal Audio level meter 1 Â± 4 dB
Confirmation Method: 1) Connect both L and R channels of audio line input to the GND. 2) Start recording. 3) Play the recorded part to confirm that the noise is below â46.0 dBs.
SR-718 BOARD (Side A)
VIDEO SYSTEM ADJUSTMENT
RV201 6V ADJ
Tape path adjustment must have been completed. Confirmation Method: 1) Supply a signal of 400 Hz, â30.0 dBs to both L and R channels of Audio Line Input. 2) Connect the audio level meter to the Audio Line Output. 3) Adjust the attenuator so that the audio level meter will indicate â30.0 dBs. 4) Make recording in the SP mode. 5) Set an audio line input signal to 7 kHz and make recording. 6) Playback a recorded portion, and measure output levels at 400 Hz and 7 kHz. 7) Confirm that the 7 kHz playback output level within a range of the 400 Hz playback output level 1 Â± 4 dB.
VCO Oscillation Frequency Adjustment (MA-325 Board) Purpose: Adjust to set the character position on the screen. Mode Signal Measurement point Measurement equipment Adjusting Element Specified value E-E Color bar Pin @Â§ of IC401 Oscilloscope (DC mode) CT401 2.75 Â± 0.05 V
VDD = 5.0V 1H
2.75Â±0.05V GND = 0V