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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!
Clear and complete service manual. Easy now to restore my old Kenwood KD-1500.
Thanks a lot.
Thanks for this "hard to find" service manual. This Sony PS212A is a very good turntable that needed to be restored !
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.
This is an excellent information source. Great quality and tons of info regarding technical service for the Technics SH8065.
TA-E1 SECTION 2 ELECTRICAL ADJUSTMENTS
IDLING ADJUSTMENT AND OFFSET VOLTAGE CHECK
â¢ Perform this adjustment after replacing CP103 and CP104. â¢ Perform this adjustment more than 10 minutes after supplying the power. Connection:
Digital voltmeter MAIN board TP501 (L-CH), TP502 (R-CH) TP503 (L-CH), TP504 (R-CH)
SECTION 3 DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
BALANCE OUTPUT LEVEL ADJUSTMENT
â¢ Perform this adjustment when replacing CP102. â¢ Perform this adjustment after the idling adjustment Connection:
AF OSC attenuator LINE1 input Set Oscilloscope
MAIN board AC J board LED A board
BALANCED-OUT 2 3 pin
Procedure: 1. Connect the digital voltmeter as shown above. 2. Adjust RV501 (L-CH) and RV502 (R-CH) of the MAIN board so that the digital voltmeter reads 50 mV Â±5 mV. (Idling adjustment) Measuring Point L-CH R-CH TP501 to TP503 TP502 to TP504 Adjusting Point RV501 RV502 Adjusting Value 50 mV Â± 5 mV 50 mV Â± 5 mV
Procedure: 1. Connect as shown above. 2. Rotate the INPUT SELECTOR knob, and set the input source to LINE 1 . 3. Set the input level so that the oscilloscope waveform level becomes approx 3 V. 4. Adjust RV401 (L-CH) and RV402 (R-CH) so that the two waveform levels on the oscilloscope become equal and their phases are reversed. Adjusting Point L-CH Pin 2 (CH1) and Pin 3 (CH2) of CN203 Pin 2 (CH1) and Pin 3 (CH2) of CN203 Adjusting Value RV401
SW L board SW P board
3. Measure the voltage of both terminals of R221 (L-CH) and R222 (R-CH) of the MAIN board, and check that the voltage is within 2 mV. (Offset voltage check) Measuring Point L-CH R-CH Both terminals of R221 Both terminals of R222 Specified Value Within 2 mV Within 2 mV R-CH
LED B board
Waveform of Pin 2 (CH1)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)
Waveform of Pin 3 (CH2) Phases of waveforms of Pins 2 and 3 should be reversed
For schematic diagrams.
Note: â¢ All capacitors are in ÂµF unless otherwise noted. pF: ÂµÂµF 50 WV or less are not indicated except for electrolytics and tantalums. â¢ All resistors are in â¦ and 1/4 W or less unless otherwise â¢ â¢ â¢ â¢ specified. % : indicates tolerance. 2 : nonflammable resistor. 5 : fusible resistor. C : panel designation. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. â¢ S : B+ Line. Note: Les composants identifiÃ©s par une marque ! sont critiques pour la sÃ©curitÃ©. Ne les remplacer que par une piÃ©ce portant le numÃ©ro spÃ©cifiÃ©.
For printed wiring boards.
Note: â¢ X : parts extracted from the component side. â¢ Â® : Through hole. â¢ b : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Side B) Parts face side: (Side A)
Adjustment Location: [MAIN board] (Component Side)
OFFSET VOLTAGE R222 R221
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
RV402 BALANCE OUT LEVEL R CH
TP503 TP501 TP504 TP502
RV401 BALANCE OUT LEVEL L CH
RV501 IDLE L CH
RV502 IDLE R CH
â¢ T : Bâ Line. â¢ H : adjustment for repair. â¢ Voltages and waveforms are dc with respect to ground in playback mode. â¢ Voltages are taken with a VOM (Input impedance 10 Mâ¦). Voltage variations may be noted due to normal production tolerances. â¢ Signal path. F : TUNER
Complete owner's manual in digital format. The manual will be available for download as PDF file aft…