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Probably it never existed a 1081 official service manual from Commodore, it's look more like a NAPCEC service manual & diagrams compilation of the 1084 series and his variants, like the nap6523, 8cm505, 1084S, 1084P and obviously the 1081. It's more complete than other scans and the quality of the scans also are far superior. It has two circuit diagrams variants of the 1081, mono and stereo versions. It doesn't include a diagram for the Philips CM8500 or CM8501, they look like the 1081 but they are slightly different.
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Rapid, clear well done as all the scheme I downloaded from this site. Great job very functional and very useful
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Great copy of the manual, has all information required for servicing,
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I work at an authorized service center and I can tell if a manual is as it should be. This one is. It may be a scan, but a very good one at that. The interesting part for me was the curcuit diagram which was scanned at high quality, making it as good as the original. I will definitely be back as a customer. I need not say this, but I will: the price was the best. Thank you owner-manuals.com .
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really a very good manual even sometimes the quality is no so good as before still very readible and very very useful!
ELECTRICAL ADJUSTMENT-4/4 (EZ MODEL)
< TUNER SECTION >
1. MW IF Adjustment L007 ............................................................ 1400/1404kHz 2. MW VT Adjustment Settings: � Test point: C39+ � Adjustment location: L004 Method: Set to MW 1602/1710kHz adjust L004 so that the test point becomes 5.6V±50mV. 3. MW Tracking Adjustment L003 ....................................................................... 603kHz TC051 ................................................................... 1404kHz 4. FM VT Adjustment Settings: � Test point: C39+ � Adjustment location: L006 Method: Set to FM 108MHz adjust L006 so that the test point becomes 6.0V±50mV. 5. FM Tracking Adjustment L005 ..................................................................... 87.5MHz 6. LW VT Adjustment Settings: � Test point: C39+ � Adjustment location: L051 Method: Set to LW 290kHz adjust L051 so that the test point becomes 4.60V±50mV. 7. LW Tracking Adjustment L003 ....................................................................... 153kHz TC001 ..................................................................... 288kHz 9. Wow Flutter Check Settings: � Measuring equipment: Wow flutter meter � Test tape: TTA-100 (3KHz) � Test point: PHONES jack (J201) � Adjustment location: SFR of deck C.B section 1) Connect the PHONES jack (J201) of the machine to the wow flutter meter. 2) Set the indicator of the wow flutter meter to the JIS and the mode to W & F (or RMS or UN WTD). 3) Play back the test tape (TTA-100) and confirm that the wow flutter is 0.35 % or less. 10. Head Azimuth Adjustment Settings: � Measuring equipment: Oscilloscope � Test tape: TTA-320 � Test point: PHONES jack (J201) � Adjustment location: Screw for the head azimuth adjustment 1) Connect the channel 1 probe of the oscilloscope to the R ch and the channel 2 probe to the Lch respectively. 2) Set the V mode of the oscilloscope to the ADD mode. 3) Play back the test tape (TTA-320) and adjust the head azimuth using the screw for the head azimuth adjustment so that the waveform of the oscilloscope maximizes. 4) After adjustment, lock the screw with the locking paint (bondlock) (1600B).
< CD SECTION >
11. Focus BIAS Adjustment Settings: � Test CD: TCD-782 � Test point: C441 (RF OUT) C433- (VREF) � Adjustment location: SFR430 Method: Play back the test CD track 2 and so that the output level is DC 0mV±10mV.
< DECK SECTION >
8. Tape speed Adjustment Settings: � Measuring equipment: Wow flutter meter � Test tape: TTA-100 (3KHz) � Test point: PHONES jack (J201) � Adjustment location: SFR of deck C.B section 1) Connect the PHONES jack (J201) of the machine to the wow flutter meter. 2) Play back the test tape (TTA-100) and adjust the SFR of the motor for 3,000 KHz±20 Hz.
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