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As Always you can find here manuals even of difficult TV scheme which are scan in almost perfect way.clear and fast!!!!!
Great work thanks!
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Incredibly clear!!!! Well done, complete and wonderful. It could not better than this!!!!
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Thank You for fast delivery for the sheme.
Everything allright.
Thanks & best regards Franz
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again you did a very good job. It was fast too. Photocopy are really readable and clear
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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.
RXD-501/551/571/A5/701/751/771/A8
ADJUSTMENT
5. Cassette Deck adjustment
No ITEM INPUT SETTING OUTPUT SETTING DECK SETTING ALIGNMENT POINT ALIGN FOR FIG.
Unless otherwise specified, set the respective switches as follows: TAPE : NORMAL DOLBY : OFF PLAY OUT : Lch (X28,CN6 1pin), Rch (X28,CN6 4pin) ø. Cassette mechanism unit (Adjustment of the REC / PLAY head)
0dBs=0.775V
<1>
Demagnetization and cleaning
�
�
Power : OFF Demagnetization,cleaning, PLAY
Demagnetize the REC / PLAY head with the head erasRecording er.Clean the REC / head, erase PLAY head, erase head,capstan head,capstan and pinch roller pinch roller using a cotton swab slightly damped with alcohol. Adjust the output to maximum and adjust the azimuth adjustment screw for the Lissajours waveform pattern of the oscilloRVS scope to become close to a 45° straight line.
<2>
Azimuth of the REC/PLAY head
TCC�153 MTT�114 10kHz, � 10dB
(B)
PLAY FWD
¿. PC BOARD ADJUSTMENT <1> TAPE SPEED(NORMAL) TCC�110 MTT�111 SCC�1727 3kHz (B) PLAY
{
A DECK VR B DECK 5 VR 6
Adjust the tape speed so that 3kHz is obtained at the center of the tape.
¡. PC BOARD ADJUSTMENT A DECK VR 7 (L) VR 8 (R) B DECK VR 1 (L) VR 2 (R)
<1>
PLAYBACK LEVEL
MTT� 150 400Hz
(B)
PLAY
Adjust the playback output to -2.5dBs
<2>
(A) Adjust the AG for the output of BIAS CURRENT the DECK to become 400Hz (-20dB)/12.5kHz (-20dB)
X28, CN6
1 L IN GND
REC (B)
¤
PLAY
VR 3 (L) VR 4 (R)
Record 400Hz and 12.5kHz alternately, and adjust the bias current adjustment potentiometer for the playback levels to become the same.
L OUT
R OUT R IN 5
AC voltmeter
AG
Oscilloscope
AC voltmeter Frequency counter
(A)
(B)
16
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