Sony-TA-E1-Service-Manual电路原理图.pdf
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1、TA-E1 SPECIFICATIONS STEREO PRE AMPLIFIER SERVICE MANUALUS Model Canadian Model AEP Model UK Model E Model Australian Model MICROFILM RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS 1. GENERAL.3 2. ELECTRICAL ADJUSTMENT. 5 3. DIAGRAMS 3-1. Circuit Boards Location. 5 3-2. Schematic Diagram Main Section (
2、1/3) .6 3-3. Schematic Diagram Main Section (2/3) .7 3-4. Schematic Diagram Main Section (3/3) .8 3-5. Printed Wiring Board Main Section . 9 3-6. Schematic Diagram Power Section . 10 3-7. Printed Wiring Board Power Section . 11 4. EXPLODED VIEWS 4-1. Top Plate and Back Panel Section. 12 4-2. Front P
3、anel Section . 12 4-3. Bottom Plate Section . 13 5. ELECTRICAL PARTS LIST .14 SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all o
4、ther exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth Ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers). Leak- age current can be meas
5、ured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltag
6、e drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a pas- sive VOM that is suitable. Nearly all battery operated digital multimeter
7、s that have a 2V AC range are suitable. (See Fig. A) Fig. A. Using an AC voltmeter to check AC leakage. 0.15F To Exposed Metal Parts on Set 1.5k AC voltmeter (0.75V) Earth Ground SAFETY-RELATED COMPONENT WARNING ! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS A
8、ND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUE
9、S ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. MODEL IDENTIFICATION BACK PANEL PARTS No.MODEL 4-214-526-1US , CND 4-214-526-2AEP, UK, E, AUS
10、Parts No. Abbreviation CND : Canadian model AUS : Australian model RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 GENERAL This section is extracted from instruction manual. 4 55 SECTION 3 DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION SECTION 2 ELECTRICAL ADJUSTMENTS IDLING ADJUSTMENT AND OFFSET VOLTAGE CHECK Perform t
11、his adjustment after replacing CP103 and CP104. Perform this adjustment more than 10 minutes after supplying the power. Connection: BALANCE OUTPUT LEVEL ADJUSTMENT Perform this adjustment when replacing CP102. Perform this adjustment after the idling adjustment Connection: MAIN board SW L board AC J
12、 board LED A board LED B board SW P board PS board VOL board THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams. Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are
13、 not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. %: indicates tolerance. 2 : nonflammable resistor. 5 : fusible resistor. C : panel designation. S : B+ Line. T : B Line. H : adjustment for repair. Voltages and waveforms are dc
14、with respect to ground in playback mode. Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. F: TUNER Note: The components identi- fied by mark ! or dotted line with mark ! are criti- cal for safety. Replace only w
15、ith part number specified. Note: Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi. For printed wiring boards. Note: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables s
16、eeing. (The other layers patterns are not indicated.) Caution: Pattern face side: Parts on the pattern face side seen from the (Side B)pattern face are indicated. Parts face side:Parts on the parts face side seen from the (Side A)parts face are indicated. Digital voltmeter TP501 (L-CH), TP502 (R-CH)
17、 TP503 (L-CH), TP504 (R-CH) MAIN board 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 5 mV. (Idling adjust- ment) 3. Measure the voltage of both terminals of R221 (L-CH) and R222 (R-CH) o
18、f the MAIN board, and check that the voltage is within 2 mV. (Offset voltage check) MeasuringAdjustingAdjusting PointPointValue L-CHTP501 to TP503RV50150 mV 5 mV R-CHTP502 to TP504RV50250 mV 5 mV Measuring PointSpecified Value L-CHBoth terminals of R221Within 2 mV R-CHBoth terminals of R222Within 2
19、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 be- comes approx 3 V. 4. Adjust RV401 (L-CH) and RV402 (R-CH) so that the two wave- form levels on the oscilloscope become e
20、qual and their phases are reversed. BALANCED-OUT 2 3 pin LINE1 input Set AF OSC attenuator Oscilloscope Adjusting Value: Adjusting PointAdjusting Value L-CHPin 2 (CH1) andRV401 Pin 3 (CH2) of CN203 R-CHPin 2 (CH1) andRV401 Pin 3 (CH2) of CN203 Phases of waveforms of Pins 2 and 3 should be reversed W
21、aveform of Pin 2 (CH1) Waveform of Pin 3 (CH2) Adjustment Location: MAIN board (Component Side) OFFSET VOLTAGE R222R221 RV401 BALANCE OUT LEVEL L CH RV402 BALANCE OUT LEVEL R CH RV501 IDLE L CH TP503 RV502 IDLE R CH TP501 TP504 TP502 TA-E1 66 3-2. SCHEMATIC DIAGRAM MAIN SECTION (1/3) Refer to page 9
22、 for Printed Wiring Board. (Page 7)(Page 7)(Page 7) (Page 7) (Page 8) (Page 10) TA-E1 77 3-3. SCHEMATIC DIAGRAM MAIN SECTION (2/3) Refer to page 9 for Printed Wiring Board. (Page 6)(Page 6)(Page 6)(Page 8) (Page 6) (Page 8) (Page 10)(Page 10)(Page 10) TA-E1 88 3-4. SCHEMATIC DIAGRAM MAIN SECTION (3/
23、3) (Page 6) (Page 7)(Page 7) TA-E1 99 3-5. PRINTED WIRING BOARD MAIN SECTION Refer to page 5 for Circuit Boards Location. Ref. NoLocation D201B-1 D202B-1 D203B-2 D204B-3 D205B-4 D206B-5 D207B-6 D208B-8 D209B-8 D210B-7 D211B-10 D212B-10 D401I-2 D402I-2 D403I-9 D404I-9 D405I-8 D406I-8 D407I-7 D408I-7
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