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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
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the manual is great and especially hard to find... thanks for the great service and having a hard to find manuel_
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hat alles sehr gut geklappt. Das Servicemaual ist gut zu verwenden. Die Pläne und Schrift
ist klar und leserlich. Außerdem preiswert. Grüße an alle Hifi-Bastler
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I got the manual quickly after the payment was transfered (1 day). The manual was exactly what i needed and the updates via e-mail were great. Thanx!
3. 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, �7.5 dBs Audio output terminal Audio level meter and distortion factor meter Playback level: �7.5 ± 2 dBs Distortion factor: 1% or less
2-4-2. Normal Audio System Adjustment � Make adjustment in the SP mode, unless otherwise specified. Use a normal VHS cassette for an adjustment tape. � Set AUDIO MONITOR to normal. (ED7/ED8) [Adjustment Sequence] 1. ACE Head Adjustment 2. E-E Output Level Check 3. Frequency Responce Check 4. 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, �7.5 dBs Audio output terminal Audio level meter �7.5 ± 3 dBs
Confirmation Method: 1) Supply an audio signal of 400 Hz, �7.5 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 �7.5 ±2 dBs. 5) Confirm that a distortion factor is within 1%. 4. 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 �67.5 dBs or less
Confirmation Method: 1) Simultaneously input a signal of 400 Hz, �7.5 dBs to both L and R channels of Audio Line Input. 2) Confirm that the audio output level is �7.5 ± 3 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, �30.0 dBs 7 kHz, �30.0 dBs Audio output terminal Audio level meter 1 ± 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 �67.5 dBs.
Tape path adjustment must have been completed. Confirmation Method: 1) Supply a signal of 400 Hz, �30.0 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 �30.0 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 ± 4 dB.
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