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Thanks for this "hard to find" service manual. This Sony PS212A is a very good turntable that needed to be restored !
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Excellent quality on these manuals. Same as having the original printed manual and incredibly useful when doing a custom install like me. Keep it up on the good work.
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This is an excellent information source. Great quality and tons of info regarding technical service for the Technics SH8065.
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5 stars on this manual since it is the complete version, not the half manual you find free for download all over the web. Good job.
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Thank you very much you are helping me a lot with my preferred hobby!!! this manual of an old TV is going to be very helpful!!!!
You are very honest competent great job very clear and well done!!!!
Matteo
CT-L5
6.2.1 Playback Section
(1) Tape Speed Confirmation
No. 1 Mode PLAY Input Signal/Test Tape NCT-111 (3 kHz) Adjustment Points VR2701 (Main Unit) (Refer to Fig. 6�4) Measurement Points TP R (W183) ( MAIN UNIT) Adjustment Value Remarks FWD adjustment REV Confirmation ( 3000 Hz +60 Hz ) �60
3000 Hz
+10 �10
Hz
(2) Head Azimuth Adjustment
¶ This unit is equipped with auto tape selector. ¶ Do not switch between forward and reverse operation with the screwdriver inserted.
No. Mode Input Signal/Test Tape Adjustment Points Head azimuth adjustment Screw (Fig. 6�4) Measurement Points TP L (W185) TP R (W183) ( MAIN UNIT) Adjustment Value Max. Playback signal level Remarks After adjustment, apply silicon bond to the head azimuth adjustment screw.
1
PLAY
STD-331E test tape (Playback: 10 kHz, �20 dB)
(3) Playback Level Adjustment
¶ Since this adjustment determines playback DolbyNR level, Perform it carefully.
No. Mode Input Signal/Test Tape Adjustment Points L ch R ch Measurement Points TP L (W185) TP R (W183) ( MAIN UNIT) Adjustment Value Remarks
1
PLAY
STD-331E test tape (Playback: 315 Hz, 0 dB)
VR2301 VR2302
�3.7 dBV
6.2.2 Recording Section
(1) Recording Bias Adjustment
¶ After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
No. Mode Input Signal/Test Tape Adjustment Points Measurement Points Adjustment Value Remarks
1
REC/ PAUSE REC = PLAY
Input a 315Hz signal to the AUX � terminal of XC-L5. Load the STD�632 test tape and record/playback the 315Hz and 10kHz signals. (see the Note below)
Input signal level L ch R ch
�23.7 dBV
TP L (W185) TP R (W183) ( MAIN UNIT) Repeat adjustment until playback level of the 10kHz signal is within 0.5dBV ±0.5dB from that of the 315Hz signal.
VR2801 VR2802
2
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
(2) Recording Level Adjustment
No. Mode REC/ PAUSE REC = PLAY Input Signal/Test Tape Input a 315Hz signal to the AUX � terminal of XC-L5. STD�632 test tape and record/ playback the 315Hz signal. Adjustment Points Measurement Points Adjustment Value Remarks
1
Input signal level L ch R ch
�7.7 dBV
TP L (W185) TP R (W183) ( MAIN UNIT) Repeat recording, playback and adjustment until playback level of the 315Hz signal becomes �7.7dBV±0.5dB.
VR2441 VR2442
2
*:
In case of adjustment as a single unit, enter the signal at 13P(RECL) and 15P(RECR) of CN2601(MAIN UNIT). At this time, connect an output buffer amplifier to the oscillator, and then connect a series resistor (180 �) after the impedance has become sufficiently low. (For MPX filter impedance matching)
24
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