yamaha_p5000s_p7000s_failure_repair_guide 电路图.pdf

FAILURE REPAIR GUIDE HAMAMATSU, JAPAN P5000S/P7000S PS Circuit Board RadioFans.CN 收音机爱 好者资料库 2 P5000S/P7000S PS sheet trouble repair guide 1 The application sheet part number and the line voltage Part number Sheet name Line voltage WB108400 PS70J AC100V/50Hz WB108500 PS70U AC120V/60Hz WB108600 PS70H AC230V/50Hz WB108700 PS70A AC240V/50Hz WC563400 PS70K AC230V/50Hz WB108800 PS50J AC100V/50Hz WB108900 PS50U AC120V/60Hz WB109000 PS50H AC230V/50Hz WB109100 PS50A AC240V/50Hz WC563600 PS50K AC230V/50Hz 2 Electric performance 2-1 Preparation It connects sheet PSW (WB17830 the part of the SUB sheet) with CN403, CN404, CN405. The sheet In case of setting which COIL70J or COIL70H are used for, it connects J410-J413. (Or, it short-circuits in CN406 and CN415). Connecting load resistor with the B, 15 V. It connects power code in CN401, CN402. It adjusts a line voltage to the voltage which suited each sheet. It refers to * As for the location, refer to Fig.1. 2-2 Each part voltage It is ON in POWER SW when being, each part output voltage is normal if it is stored in the range in . When a line voltage is shifted, it doesnt sometimes become the output voltage of when measuring output voltage without the load resistor. ModelMeasurement Measurement Output voltage(DC) Load resistor part place J U,A H P7000S + B voltage W406RE-W407BL +150.8 3V +141.4 3V +143.5 3V 22K 3W - B voltage W407BL-W408WH -150.8 3V -141.4 3V -143.5 3V 22K 3W P5000S + B voltage W406RE-W407BL +122.5 3V +113.1 3V +124.3 3V 22K 3W - B voltage W407BL-W408WH -122.5 3V -113.1 3V -124.3 3V 22K 3W commonness +15V Power CN408 1-2pin +15.00.6V +15.00.6V +15.00.6V 10K 1/4W -15V Power CN408 3-2pin -15.00.6V -15.00.6V -15.00.6V 10K 1/4W 3 Discharge When treating with simple substance sheet, for the shock guard (discharging in the electric charge of the capacitor), discharge with the following terminal by resistor. Terminals of C416 and C417(Power SW OFF there is not need of the discharge but checking voltage for the safe confirmation if leaving later for equal to or more than 10 minutes) Between W406RE-W407BL and W407BL-W408WH. Terminals of C402 Model P7000S P5000S commonness Load resistor RadioFans.CN 收音机爱 好者资料库 3 P5000S/P7000S 4 Repair concrete instance at the trouble part All secondary output isnt output. Check the following instruction. Confirm the resistor value of R416, R451(6.8 5 W). Exchange if open the resistor value. Confirm the resistor value of Q406, Q407 Between C-E. If short or several value(), remove the part and then exchange IC402 because it is broken. Conform the resistor value of R420, R421. Confirm whether or not it is a 10. Remove if open or a resistor value is increased. Conform the resistor value of R419. Confirm whether or not it is a 4.7. Remove if open or a resistor value is increased. Conform the resistor value of R429, R430. Remove if open or a resistor value is increased. Confirmation of F401. Confirm the resistor value of F401. Dont install the test of ends. Conform a waveform of IC402. Confirm alternating volts. 【Note】 The earth of the measuring machine doesnt connect. The parts sometimes damages when using in the connecting condition. After - ending, it observes a waveform IC402-1Pin(Lo),2Pin(COM) with the oscilloscope. There is good if being the square wave (0-15V) of the about 70 kHz. In the waveform malfunction case, confirm that the output of IC403 (regulator) is +15 V. In case of equal to or less than 15V, it exchanges IC402 and it observes a waveform once again. (When exchanging IC402 already by , you exchange IC401). * When observing a waveform, do short-circuiting of PR401. Exchange the parts which was removed by - for the normal part. It is repair completion if confirming 6-2. Electric performance and not being in the problem. RadioFans.CN 收音机爱 好者资料库 4 P5000S/P7000S 7.Preparation of Delivery Attenuator : MIN MODE switch : STEREO SUBWOOFER/LOW CUT switch : OFF YS Processing switch : OFF FREQUENCY : 25Hz * AC-IN POWER SW 22k 3W22k 3W10k 1/4W10k 1/4W PSWPSW W603 PK W601 GY W602 GY SW601 Possible to replace W601 and W602 U,V,K,A,T：Unnecessary J,H,W,B ：short Wiring/Check Parts +BG-B-15VG+15V