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manual excelente completo , diagramas y esquemas bien presentados y buena calidad de imagen.
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muy buen manual completo de buena calidad de impresion preciso y detallado , muy útil para la reparación.
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The service manual is a good quality scan of the Panasonic NV-850, which is electrically identical to the Philips VR 6920, but mecanically just nearly.
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The service manual is a good quality scan of the Blaupunkt RTV-404, which is electrically and mecanically identical to the Panasonic NV-830.
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completo manual bien detallado y de buena calidad de impresion , se echa en falta los esquemas de placa y parte de algun diagrama.
SECTION 4 MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase head pinch roller rubber belts capstan idlers 2. Demagnetize the record/playback/erase head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement Mode FWD CQ-102C FWD Back tension REV CQ-102RC REV Back tension FF, REW CQ-201B Torque Meter Meter Reading 35 � 80 g � cm (0.49 � 1.11 oz � inch) 1 � 7 g � cm (0.012 � 0.097 oz � inch) 35 � 80 g � cm (0.49 � 1.11 oz � inch) 1 � 7 g � cm (0.012 � 0.097 oz � inch) more than 40 g � cm (more than 0.56 oz � inch)
SECTION 5 ELECTRICAL ADJUSTMENTS
PRECAUTION
1. The adjustment should be performed in the publication. (Be sure to male playback adjustment at first.) 2. The adjustments and measurement should be performed for both L-CH and R-CH. � Switch position DOLBY NR switch : OFF DIRECTION switch : A Standard Input Level Input terminal source impedance input signal level Standard Output Level Output terminal load impedance output signal level Test Tape Type P-4-A100 P-4-L300 WS-48A Signal 10 kHz, �10 dB 315 Hz, 0 dB 3 kHz, 0 dB Used for Azimuth Adjustment PB Level Adjustment Tape Speed Adjustment TAPE OUT (L-CH) 47 k� 0.49 V (� 4 dB) TAPE IN 10 k� 0.49 V (� 4 dB)
0 dB = 0.775 V
� 13 �
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