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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
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IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
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Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
SECTION 5 MECHANICAL ADJUSTMENTS
� Precaution 1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback head pinch roller erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head magnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, appiy 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 Torque Meter CQ-102C Meter Reading 2.95 � 6.86 mN�m (30 � 70 g�cm) (0.42 � 0.97 oz�inch) 0.15 � 5.39 mN�m (1.5 � 5.5 g�cm) (0.021 � 0.076 oz�inch) more than 5.89 mN�m (more than 60 g�cm) (more than 0.83 oz�inch) more than 5.89 mN�m (more than 60 g�cm) (more than 0.83 oz�inch)
HCD-NEZ3/NEZ5 SECTION 6 ELECTRICAL ADJUSTMENTS
DECK SECTION 0 dB=0.775 V
1. Demagnetize the record/playback head with a head demagnetizer. 2. Do not use a magnetized screwdriver for the adjustments. � Test Tape
Tape P-4-A063 Signal 6.3 kHz, -10 dB Used for Azimuth Adjustment
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note: Remove the cover (azimuth) before this adjustment.
FWD Back Tension
CQ-102C
FF
CQ-201B
REW
CQ-201B
� Tape Tension Measurement
Mode FWD Tension Meter CQ-403A Meter Reading more than 100 g (more than 3.53 oz)
Procedure: 1. Mode: Playback
test tape P-4-A063 (6.3 kHz, �10 dB)
HEAD PHONE board PHONES jack (J500) level meter
set
+ �
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