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Excellent manual, detailed, very useful! Exactly what I needed, I'd recommend it to all who need it. Although images are scanned easily readable and explicit. A valuable tool product at a price more than modest, take it with confidence and you will not regret it!
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Clear and complete service manual. Easy now to restore my old Kenwood KD-1500.
Thanks a lot.
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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.
SECTION 1 ELECTRICAL ADJUSTMENTS
TUNER UNIT SECTION
� Use the following equipment for the electrical adjustment. Equipment 1 Monitor TV (XVM-6100, etc.) 2 Spectrum analyzer 3 TV signal generator 4 Digital voltmeter 5 Oscilloscope 6 Audio analyzer 7 DC power supply 8 Frequency counter Equipment Connections Connect the test equipment as shown in the figure below (unless otherwise instructed) and perform the adjustment.
DC power supply
TRAP Adjustment Procedure: 1. With the Power off, input the output of TG to TP30 (with DC cut by a capacitor (0.01 µF)). 2. Connect a spectrum analyzer to TP31 (with DC cut by a capacitor (0.01 µF)). 3. Adjust T1 so that the waveform peak is 40.9 MHz ± 50 Hz. 4. Adjust T2 so that the waveform peak is 31.9 MHz ± 50 Hz. 5. After this adjustment, open TP30 and TP31. (Disconnect the spectrum analyzer.)
T1= 40.9 MHz T2= 31.9 MHz
TV SG
ANT IN set
RF out
POWER (CN4)
VCO Adjustment Procedure: 1. No connection to ANT IN. (no signal state) 2. Connect a resistor (10 k�) between TP33 and +9 V (TP35). 3. Connect a spectrum analyzer to TP34 (with DC cut by a capacitor (0.01 µF)). 4. Adjust T3 so that the waveform peak is 38.9 MHz ± 1 kHz. 5. After this adjustment, open TP34. (Disconnect the spectrum analyzer.)
Setup during Adjustment Use the video signal obtained from the TV signal generator as the alignment signal, and check that this signal is within video output signal standards.
white (approx. 100%)
0.7 V 0.3 V 0.3 V red horizontal sync. signal burst signal (flat)
38.9 MHz
AGC Adjustment Procedure: 1. Set the TV SYSTEM switch to 1. 2. Input a color bar signal of E8ch (196.25 MHz) and 66 dBµV (75 � OPEN). 3. Connect the digital voltmeter to TP42. 4. Adjust VR1 so that reading on the digital voltmeter is 6.0 ± 0.1 V. AFT Adjustment Procedure: 1. Input a color bar signal of E8ch (196.25 MHz) and 74 dBµV (75 � OPEN). 2. Connect the oscilloscope to TP102. 3. Adjust T3 untill the waveform on the oscilloscope is 2.5 Vp-p.
Color bar signal from TV signal generator
Connection points: Refer to page 4. Adjustment points: Refer to page 4.
2.5 Vp-p 0V
Note: Small peaks (dips) coming out from the top of the waveform are unacceptable.
�2�
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