Hi-Fi Integrated Stereo Amplifier SERVICE MANUAL MODEL PMA-2000IVR INTEGRATED STEREO AMPLIFIER Some illustrations using in this service manual are slightly different from the actual set. 16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN Telephone: 03 (3837) 5321 X0141 337 NC 0204 PMA-2000IVR SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective. SPECIFICATIONS POWER AMPLIFIER SECTION Rated Output Power: Both channel driven (8 /ohms Load) 80 W + 80 W 20 Hz to 20kHz, T.H.D. 0.07 % (4 /ohms Load) 160 W + 160 W DIN, 1 kHz, T.H.D. 0.7 % Total Harmonic Distortion: 0.01 % (-3 dB at rated output, 8 /ohms) (1kHz) Input Sensitivity/Input Impedance: P DIRECT: . 0.9 V/47 k/kohms Amplification factor: 29 dB PRE AMPLIFIER SECTION PHONO EQUALIZER Rated Output: 150 mV (Rec out Terminal) Input Sensitivity/Input Impedance: The value in parentheses ( ) refers to the input impedance when SOURCE DIRECT is ON. PHONO: MM: 2.5 mV/47 k/ohms MC: 200 µV/100 /ohms CD, TUNER, DVD/AUX-1, AUX-2, 135 mV/47 k/ohms TAPE-1/CD-R, TAPE-2/MD: (135 mV/12 k/ohms) RIAA Deviation: PHONO: 20 HZ ~ 20 kHz ±0.5 dB Maximum Input: PHONO MM: 130 mV/1 kHz MC: 10mV/1 kHz Rated Output: PRE PUT: 0.9 V (Input CD 135 mV) OVERALL CHARACTERISTICS SN Ratio (IHF A Network): (input terminals short-circuited) (input terminals short-circuited) SOURCE-DIRECT: ON Tone Control Adjustable Range: BASS: TREBLE: PHONO MM: 89 dB (at 5 mV input) MC: 74 dB (at 0.5 mV input) CD, TUNER, DVD/AUX-1, AUX-2, TAPE-1/CD-R, TAPE-2/MD: 108 dB 100 Hz ±8 dB 10 kHz ±8 dB AC 230 V, 50 Hz (Asia) AC220 V, 50 Hz (China) 100 W (Total) Except for China model 100 W 310 W (IEC) 434 (W) × 180 (H) × 478 (D) mm (17-3/32" × 7-5/64" × 18-13/16") 24.0 kg (52 lbs 14.6 oz) OTHERS Power Supply: AC Outlets: Switched × 2: Unswitched × 1: Power Consumption: Dimensions: Net Mass: } REMOTE CONTROL UNIT (RC-858) Remote control system: Power supply: External dimensions: Mass: Infrared pulse system 3 V DC, Two size R03 ("AAA") dry cell batteries 56 (W) × 105 (H) × 19 (D) mm (2-3/16" × 4-1/8" × 23/32") 70 g (Approx. 2.47 oz) (including batteries) * Maximum dimensions include controls, jacks, and covers. (W) = width, (H) = height, (D) = depth * For improvement purposes, specifications and functions are subject to change without advanced notice. 2 PMA-2000IVR DISASSEMBLY (Do reverse manner when assembling.) Top Cover Remove 14 screws 1 , 4 screws 2 and detach the Top Cover in the arrow direction. 1 1 1 2 Top Cover 2 1 Front Panel 1. Remove 8 screws 3 . 2. Pull out the knob 4 and remove the nut, then detach the panel in the arrow direction. 3 Front Panel 3 4 Nut 3 3 PMA-2000IVR Bottom Plate Remove 24 screws 5 and detach it in the arrow direction. 5 Bottom Plate Rear Panel 1. Remove 5 screws 6 , 6 screws 7 and 2 screws 8 . 2. Detach the Rear Panel in the arrow direction. Rear Panel 8 7 6 7 Heat Sink Ass'y Remove 2 screws 9 and detach the Heat Sink Ass'y in the arrrow direction. 9 Heat Sink Ass'y 4 PMA-2000IVR METHOD OF ADJUSTMENTS DC Voltmeter Power Trans VR501 VR502 Power Trans 1U-3432-1 Power Amp P.W.B. (L) 1U-3432-2 Power Amp P.W.B. (R) Main Volume IDLING CURRENT Setup 1. Lay the unit at an ordinary position away from a direct current from an air condition or fan. Do the adjustment at a temperature between 15°C (59°F) and 30°C (86°F). 2. Set control as follows. POWER SWITCH VOLUME CONTROL SPEAKER Terminals OFF ( ). Fully counterclockwise in the minimum position ( ). (Main Volume and Semifixed resistors [VR501, 502]) Open: do not connect the speakers, dummy load etc. Adjustment 1. Remove top cover. And then connect DC Voltmeter to test points of 1U-3432-1 (Lch) and 1U-3432-2 (Rch) Power Amp Printing Wiring Board. 2. Connect power cord to AC wall outlet, and turn POWER switch "ON" ( VR502 (Rch) clockwise so that the DC Voltmeter reads 12 ±0.5mV. ). Within 10 seconds turn VR501 (Lch) and 3. Then after 2 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV. 4. And after 10 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV. 5 PMA-2000IVR BLOCK/LEVEL DIAGRAM 1 2 3 BASS TREBLE 4 5 6 7 8 PHONO 47k 100 MM MC + RIAA TONE BUFFER BALANCE SOURCE DIRECT OFF A ON CD TUNER DVD /AUX-1 AUX-2 TAPE-1 /CD-R TAPE-2 /MD TAPE-1 /CD-R REC OUT TAPE-2 /MD REC OUT SELECTOR PRE OUT MAIN IN (dBV) 40dB 30dB 20dB 10dB 0dB -10dB -20dB -30dB -40dB -50dB -60dB -70dB -80dB PHONO MC 0.18mV(-75dB) PHONO MM 2.2mV(-53dB) P AMP DIRECT 0.9V(-1dB) . CD etc.135mV(-17.4dB) MAIN VOLUME FLAT AMP POWER AMP INPUT SPEAKER A (MAIN) SPEAKER B (BI WIRING) HEAD PHONE POWER AMP DIRECT OFF ON PROTECTOR +16V GND -16V +16V GND -16V +16V GND -16V +30V GND -30V EQUALIZER TONE AMP POWER AMP FLAT AMP B POWER AMP VOLTAGE POWER GND REGULATOR POWER AMP + + +12V C + PROTECTOR & RELAY AC PLUG GND 80W/8ohm 25.3V(28dB) D E 6 PMA-2000IVR SEMICONDUCTORS IC's TMP87CC46N-4C08 (IC901) TMP87CC46N-4C08 (IC901) Terminal Function Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 NOTE: Port Name P77 P76 P75 P74 P73 P72 P71 P70 P07 P06 P05 P04 P03 P02 P01 P00 TEST RESET XIN XOUT Vss VAREF P60 P61 P62 P63 P64 P65 P66 P67 P10 P11 P12 P13 P14 P15 P16 P17 P20 P21 P22 VDD I/O O O O O O O O I O O O O O O O O Type C C C C C C C C C C C C C C C C AC POWER RELAY DRIVE Function (HSO)P77 (HSCK)P76 (SO)P75 (SI)P74 (SCK)P73 (PDO/PWM)P72 (INT4)P71 (INT3/TC3)P70 P07 P06 P05 P04 P03 P02 P01 P00 TEST RESET XIN XOUT (VASS)VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 VDD 41 P22(XOUT) 40 P21(XIN) 39 P20(INTS/STOP) 38 P17 37 P16 36 P15(TC2) 35 P14(PPG) 34 P13(DVO) 33 P12(INT2/TC1) 32 P11(INT1) 31 P10(INT0) 30 P67(AIN7) 29 P66(AIN6) 28 P65(AIN5) 27 P64(AIN4) 26 P63(AIN3) 25 P62(AIN2) 24 P61(AIN1) 23 P60(AIN0) 22 VAREF (SO) (SI) (SCK) (INT4) (INT3) MUTE/STAND-BY LED DRIVE MOTOR VOLUME UP REMOTE CONTROL SIGNAL INPUT TAPE-2 LED, ARELAY DRIVE TAPE-1 LED, ARELAY DRIVE AUX-2 LED, ARELAY DRIVE DVD/AUX-1 LED, ARELAY DRIVE TUNER LED, ARELAY DRIVE CD LED, ARELAY DRIVE PHONE LED, ARELAY DRIVE to VSS RESET X'tal X'tal GND to VDD MODEL SETTING INPUT (VAss) I I I I I O O O I I O O O O O O O O O C C C C C C C C C C C C C C C C C C C FUNCTION SELECTOR SW INPUT MUTING SIGNAL INPUT Power Supply Terminal VDD VSS PSW ALU Flag RBS Stack Pointer Data memory (RAM) Unviersal register Blank Program Counter Reset I/O Terminal RESET Test Terminal TEST Program Memory (ROM) (INT0) (INT1) (INT2) PROTECTOR INPUT POWER OFF MOTOR VOLUME DOWN System Control Circuit Interrupt Control Circuit Standby Control Circuit Timing Generator Time Base Timer Watch Dog Timer 16 bit Timer/Counter TC1 TC2 8 bit Timer/Counter TC3 TC4 8 bit Serial Interface SIO HSO Command register Command decoder High Freq. Oscillator Connection Terminal XIN XOUT High Freq. Use Clock Low Freq. Generator Use STOP STOP MODE CANCEL +5V P2 8 bit A/D Converter P6 P0 P1 P7 P22 P20 I/O Port VAREF Analog Vref P67 P65 (AIN5) P66 P60 (AIN0) (Analog Input) P07 P00 I/O Port P17 P10 P77 P70 Pin No. : Terminal number of microcomputer. Port Name : The name entered on the data sheet of microcomputer. I/O : Input or output of port. "I" = Input port "O" = Output port Type : Composition of port in case of output port. "C" = CMOS output Function : Function and logical level explanation of signals to be interface. ~ ~ ~ ~ ~ ~ 7 PMA-2000IVR LB1639 (IC902) VOUT1 VOUT2 BA4558 (IC701) NJM2082D (IC201) 7 VCC 85 TOP VIEW VIN1 1 GND 2 VCONT 3 VIN2 4 8 VOUT1 7 VCC 6 N.C. 5 VOUT2 A OUTPUT 1 A ­INPUT 2 A+INPUT 3 3 VCONT VREF 1 2 8V 7 B OUTPUT 6 B ­INPUT 5 B +INPUT V 4 2 GND VIN1 1 4 VIN2 6 N.C. OTHERS GP1U27X (Remote Control Sensor) (IC103) TOP VIEW Head Amp Limiter Amp BPF Detector & Hysteresis Integrator Comparator Comparator Vout Vcc GND GND Vcc Vout TRANSISTORS 2SA933S (S) 2SA988 (E/F) 2SA1145 (O/Y) 2SA1546 (M/L) 2SB1328 (P) 2SC1740S (S) 2SC1841 (E/F) 2SC2705 (Y) 2SC3421 (O/Y) 2SC4001 (M/L) 2SD2004 (P) 2SA1837 (Y) 2SC4793 (Y) DTA114ES DTC114ES DTC143ES DTC143ZS DTC144WS DTA114ES DTC114ES DTC143ES DTC143ZS DTC144WS FRONT VIEW FRONT VIEW FRONT VIEW PNP Type NPN Type C R1 ECB BCE ECB B R2 E R1 DTA114ES 10kohm R2 10kohm DTC114ES R1 10kohm R2 10kohm 4.7kohm 47kohm 22kohm DTC143ES 4.7kohm DTC143ZS 4.7kohm DTC144WS 47kohm 8 PMA-2000IVR 2SJ78 2SK215 FRONT VIEW 2SK373 (Y) 2SK184C (GR/BL) 2SK369 (BL/GR)-C FRONT VIEW 2SK2967 FRONT VIEW FRONT VIEW GSD SGD DGS GDS DIODES (LED included) 11EQS06 31DQ06 1SS270A HZS2B-1 HZS3B-2 HZS5C-1 HZS9B-1 HZS11A-1 HZS12A-1 HZS30-1 MTZJ3.3A MTZJ7.5A MTZJ7.5C MTZJ18A SLR-56VC (Red) TOP VIEW FCH20A15 FRONT VIEW FRH20A15 FRONT VIEW SEL2E10C (Blue) TOP VIEW SLR-342MG (Green) SIDE VIEW AKA KAK THYRISTOR SF0R3G42 THERMISTOR PTH9M04BD222TS2F333 FRONT VIEW A GAK G K 9 PMA-2000IVR PRINTED WIRING BOARDS 1 2 3 4 5 6 7 8 1U-3432 POWER AMP P .W.B. UNIT Ass'y 8 5 1 1 A 1 5 1 1 8 5 1 3 1 5 B 1 5 1 1 8 1 4 5 C 5 5 1 10 2 1 D 6 1 1 1 1 5 6 1 1 2 10 3 10 1 1 8 E 1 4 COMPONENT SIDE 10 PMA-2000IVR 1 2 3 4 5 6 7 8 1U-3130 INPUT P .W.B. UNIT Ass'y A 10 8 5 1 4 1 1 3 16 9 1 8 1 6 B 10 1 1 11 C 1 3 3 1 11 1 10 1 3 1 1 8 3 5 6 1 4 5 1 4 1 21 5 1 1 22 42 1 D 3 1 1 E 5 1 5 COMPONENT SIDE 11 PMA-2000IVR 1 2 3 4 5 6 7 8 1U-3433 FLAT AMP P .W.B. UNIT Ass'y A 5 1 5 1 1 B 3 1 10 C 1 3 D COMPONENT SIDE E 12 PMA-2000IVR NOTE FOR PARTS LIST " are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused. l When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying. l Ordering part without stating its part number can not be supplied. l Part indicated with the mark " " is not illustrated in the exploded view. l Not including Carbon Film ±5%, 1/4W Type in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.) WARNING: Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer. l Part indicated with the mark " l Resistors Ex.: RN 14K 2E 182 G FR Type Shape Power Resist- Allowable Others and perance error formance t t t t l Capacitors Ex.: CE 04W 1H 2R2 M BP Type Shape Dielectric Capacity Allowable Others and per- strength error formance t t t t RD : Carbon RC : Composition RS : Metal oxide film RW : Winding RN : Metal film RK : Metal mixture Resistance 182 s s 2B 2E 2H 3A 3D 3F 3H : 1/8W : 1/4W : 1/2W : 1W : 2W : 3W : 5W F G J K M : ±1% : ±2% : ±5% : ±10% : ±20% P : Pulse-resistant type NL : Low noise type NB : Non-burning type FR : Fuse-resistor F : Lead wire forming CE : Aluminum foil electrolytic CA : Aluminum solid electrolytic CS : Tantalum electrolytic CQ : Film CK : Ceramic CC : Ceramic CP : Oil CM : Mica CF : Metallized CH : Metallized 0J : 6.3V 1A : 10V 1C : 16V 1E : 25V 1V : 35V 1H 2A 2B 2C 2D 2E 2H 2J : 50V : 100V : 125V : 160V : 200V : 250V : 500V : 630V F : ±1% G : ±2% J : ±5% K : ±10% M : ±20% Z : +80% ­20% P : +100% ­0% C : ±0.25pF D : ±0.5pF = : Others HS : High stability type BP : Non-polar type HR : Ripple-resistant type DL : For change and discharge HF : For assuring high requency U : UL part C : CSA part W : UL-CSA type F : Lead wire forming 1800 ohm = 1.8 kohm Indicates number of zeros after effective number. 2-digit effective number. · Units: ohm 1 s R 2 s 1.2 ohm 1-digit effective number. 2-digit effective number, decimal point indicated by R. · Units: ohm Capacity (electrolyte only) 222 2200µF s s Indicates number of zeros after effective number. 2-digit effective number. · Units: µF. 2 s R 2 s 2.2µF 1-digit effective number. 2-digit effective number, decimal point indicated by R. · Units: µF. Capacity (except electrolyte) 222 2200pF=0.0022µF s s (More than 2) Indicates number of zeros after effective number. 2-digit effective number. · Units: pF. 2 s 2 s 1 220pF (0 or 1) Indicates number of zeros after effective number. 2-digit effective number. · Units: pF. · When the dielectric strength is indicated in AC, "AC" is included after the dieelectric strength value. 13 PMA-2000IVR PARTS LIST OF P.W.B. UNIT ASS'Y 1U-3432 POWER AMP UNIT ASS'Y Ref. No. IC103 IC201 TR453 Part No. Part Name Remarks SEMICONDUCTORS GROUP 499 0290 007 IC GP1U271X 263 0743 007 IC NJM2082DD 274 0151 903 Transistor 2SD2004(P)T105 Note: The symbol in the column "Remark ...