Technics-SUC-909-S-Service-Manual电路原理图.pdf
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1、Table Of Contents COVER 1 Note 2 Location of Controls 3 To Supply Power Source 3.1 Power Supply to Main Circuit 3.2 Operation Check 4 Operation Checks and Component ReplacementProcedures 5 Type Illustration of ICs, Transistors and Diodes 6 Schematic Diagram 6.1 Schematic Diagram Notes 6.2 Schematic
2、Diagram 7 Printed Circuit Board Diagram 8 Block Diagram 9 Wiring Connection Diagram 10 Measurements and Adjustments 10.1 Measurement instruments and Special tools 10.2 Output Voltage Adjustment 11 Terminal Function of ICs 11.1 IC701 (M38503M2404F) : Micro Computer 12 Replacement Parts List 13 Cabine
3、t Parts Location 14 Packaging Service Manual TOP NEXT AD9907176C2 Control Amplifier G SU-C909U Colour (K).Black Type Area (E).Europe and Russia. PV PV 1999 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXT Table Of Con
4、tents COVER 1 Note 2 Location of Controls 3 To Supply Power Source 3.1 Power Supply to Main Circuit 3.2 Operation Check 4 Operation Checks and Component ReplacementProcedures 5 Type Illustration of ICs, Transistors and Diodes 6 Schematic Diagram 6.1 Schematic Diagram Notes 6.2 Schematic Diagram 7 Pr
5、inted Circuit Board Diagram 8 Block Diagram 9 Wiring Connection Diagram 10 Measurements and Adjustments 10.1 Measurement instruments and Special tools 10.2 Output Voltage Adjustment 11 Terminal Function of ICs 11.1 IC701 (M38503M2404F) : Micro Computer 12 Replacement Parts List 13 Cabinet Parts Loca
6、tion 14 Packaging PV PV Service Manual TOP NEXT AD9907176C2 Control Amplifier G SU-C909U Colour (K).Black Type Area (E).Europe and Russia. 1999 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXT 1 Note TOP PREVIOUS NEXT
7、 Refer to the servise manual for Model No. SE-A909S (ORDER No. AD9907177C2) for information on Accessories, Connections, Operations and Packaging. TOP PREVIOUS NEXT 2 Location of Controls TOP PREVIOUS NEXT TOP PREVIOUS NEXT 3 To Supply Power Source TOP PREVIOUS NEXT This unit SU-C909U is designed to
8、 operate on power supplied from the Power Amplifier SE-A909S. When operating the unit SU-C909U alone for testing and servicing, without having power supplied from the Power Amplifier SE-A909S, use the following method. 3.1 Power Supply to Main Circuit 3.2 Operation Check TOP PREVIOUS NEXT 3.1 Power
9、Supply to Main Circuit TOP PREVIOUS NEXT 1. Apply 10 V AC power to the section between the point TP1 and the point TP2 . Shown in Fig.1 2. Connect the DC+12 V to+15 V (more than 0.1 A) to the point TP5 , and the GND terminal to the point TP4 using the DC power supply. Shown in Fig.1 3. Connect the D
10、C -12 V to -15 V (more than 0.1 A) to the point TP3 , and the GND terminal to the point TP4 using the DC power supply. Shown in Fig.1 TOP PREVIOUS NEXT 3.2 Operation Check TOP PREVIOUS NEXT 1. Input a signal (1 kHz, 100 mV) to the each line-in terminal. 2. Connect the oscilloscope or the speaker wit
11、h the built-in amplifier to the PRE OUT terminals and check if the signals are outputting from this unit. Fig.1 TOP PREVIOUS NEXT 4 Operation Checks and Component Replacement/Procedures TOP PREVIOUS NEXT TOP PREVIOUS NEXT 5 Type Illustration of ICs, Transistors and Diodes TOP PREVIOUS NEXT TOP PREVI
12、OUS NEXT 6 Schematic Diagram TOP PREVIOUS NEXT 6.1 Schematic Diagram Notes 6.2 Schematic Diagram TOP PREVIOUS NEXT 6.1 Schematic Diagram Notes TOP PREVIOUS NEXT G This schematic diagram may be modified at any time with the development of new technology. Notes: H S801: VGCA switch ( ) H S802: Tape mo
13、nitor switch (TAPE MONITOR) H S804: Input select switch (SELECTOR) H S805: Unit on/off switch ( /I) H VR301: Volume control VR (VOLUME) H VR311: Output voltage adjustment VR (L ch) H VR312: Output voltage adjustment VR (R ch) H VR401: Balance control VR (BALANCE) H VR402: Tone control VR (BASS) H VR
14、403: Tone control VR (TREBLE) G Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values, depending on theinternal impedance of the DC c
15、ircuit tester. No mark : Power ON G Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When repl
16、acing any of components, be sure to use only manufacturers specified parts shown in the parts list. G Caution! IC and LSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair. Cover the parts boxes made of plastics with aluminum foil. Ground the solder
17、ing iron. Put a conductive mat on the work table. Do not touch the legs of IC or LSI with the fingers directly. G Voltage and signal line G : Positive voltage line G : Negative voltage line G : Phono signal line G : Tape rec signal line TOP PREVIOUS NEXT 6.2 Schematic Diagram TOP PREVIOUS NEXT TOP P
18、REVIOUS NEXT 7 Printed Circuit Board Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 8 Block Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 9 Wiring Connection Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT 10 Measurements and Adjustments TOP PREVIOUS NEXT 10.1 Measurement instruments and Special tools 10.2 O
19、utput Voltage Adjustment TOP PREVIOUS NEXT 10.1 Measurement instruments and Special tools TOP PREVIOUS NEXT G AC electric voltmeter (AC EVM) G AF oscillator TOP PREVIOUS NEXT 10.2 Output Voltage Adjustment TOP PREVIOUS NEXT 1. Turn on the power. 2. Select the input source to CD. 3. Connect the measu
20、ring instrument as shown in Fig.2 4. Apply 1 kHz, 200 mV signal to CD terminal. 5. Adjust the VOLUME to maximum. 6. Adjust VR311 (L ch) and VR312 (R ch) so that the output voltage to AC 1.00 V0.2 dB. Shown in Fig.3 Fig.2 G Adjustment Point Fig.3 TOP PREVIOUS NEXT 11 Terminal Function of ICs TOP PREV
21、IOUS NEXT 11.1 IC701 (M38503M2404F) : Micro Computer TOP PREVIOUS NEXT 11.1 IC701 (M38503M2404F) : Micro Computer TOP PREVIOUS NEXT Pin No.NameI/OFunction 1VCCIPower supply (+5 V) terminal 2VREFIReference voltage input 3AGND-GND terminal 4CSIChip select signal input 5NC-Not used, open 6REMCONIRemote
22、 control signal input 7BACKUPIPower failure detect signal input 8NC-Not used, open 9SELDATAOData signal output for input select IC (IC201 and IC202) 10SELCLKOClock signal output for input select IC (IC201 and IC202) 11SELSTBOStrobe signal output for input select IC (IC201 and IC202) 12POWERSWISelect
23、or switch (S804) detect signal input 13LEDCLKOClock signal output for LED drive IC 14LEDDATAOData signal output for LED drive IC 15CNVSS-Connected to GND 16VRDOWNOMotor drive signal output (Volume down) 17VRUPOMotor drive signal output (Volume up) 18RESETISystem reset signal input 19XINIConnected to
24、 the ceramic oscillator (8 MHz) 20XOUTOConnected to the ceramic oscillator (8 MHz) 21GND-GND terminal 22BATELED-Battery level (empty) LED (D809) drive signal output (Not used, open) 23BATFLED-Battery level (full) LED (D809) drive signal output (Not used, open) 24VIALEDOVIA LED drive signal output 25
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