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Impeccable, document trรจs complet. Perfect, i get all i need. All schematic are correct. Thanks
The manual is of better quality compared to other. I found it less expensive and therefore it it is the best buy cost vs quality.
I bought the service-manual of the sony ICB-1020(an old transmitter-receiver) at "www.Owners-Manual.com", I found the service-manual for a fairly cheap price(in comparison with other sellers). I filled in some questions, payed the order with Ideal, and within 24 hours I had my service manual. I was very happy:In no time I had my service-manual and everything, but literally everything was noted down in the manual; the electronic scheme, the parts list, etcetera.
A very practical, reference-document.
This comprehesive service maual was greatly appreciated, as was the digital download.
Good en helpfull black and white scanned Srfvice manual of the Philps D8444. Quick service and delivery
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