Download SP-014 service manual
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SP-014 service manual SP-014 Principle and Servicing 1. SP-014 working principle External input signals are inputted to input board by SC1, and its left channel signal outputs to pin 3 of socket XS through R127, to power amplifier board through flat cable XP2; after reaching power amplifier board, it is divided into 2 paths, one path reaches potentiometer RP100A for bass adjustment through R100 (RP100 is duplicate potentiometer, which can adjust left and right channels at the same time); the other paths reaches potentiometer RP101A for treble adjustment through capacitor C100 (RP101 is duplicate potentiometer, which can adjust left and right channels at the same times); and the two paths combine one path after treble/bass adjustment through resistor R108, R107 to send to potentiometer RP102A for volume adjustment (RP102 is duplicate potentiometer, which can adjust left and right channels); volume adjustment signals, through R101 damping and C101 coupling, are sent to pin 11 of N100 TDA7265 for power amplifying (TDA7265 is a dual-channel power IC), then output signals through pin 2 after amplification to loudspeaker directly. Signal floe direction of right channel is similar with that of left channel. This player is with power-on mute function, and its principle is: when power on, +VS charges capacitor C110 through R110, triode V100 cuts off, MUTE pin of TDA7265 inputs high level, mute of TDA7265 is effective, the whole set has no output; when capacitor C110 is in charging, positive voltage increases to 6V, V100 is on, MUTE turns into low level, mute is off, output is normal and the concussion sound is removed when power on . 2. Troubleshooting flow (1) Troubleshooting flow for “Left channel has no output”os shown as the following figure 2.1: -1- Left channel has no output Check whether pin 1 (or 3) of power amplifier board XS2 has waveform after inputting signals N Y Check whether positive waveform of capacitor C101 (or C111) is normal Y N Whether waveform of pin 2, 4 of N100 is normal Y N Change RP102 Change N100 Change R127 and R129 N Change input terminal Figure 2.1 troubleshooting flow chart for "Left channel has no output" -2- Change loudspeaker (2) Troubleshooting process for “Power no on”is shown as the following figure 2.2: Power not on Check whether protector tube on power cord has been burnt down N Y Check whether power amplifier board protector tube has been burnt down Check whether power amplifier board power voltage +/- 22V is normal N Y Change C120, C121, C122, C123 and check whether the trouble is removed Check whether protector tube of power amplifier board has been burnt down N N N Change N100 to solve the problem Change transformer and protector tube and it is O K Y Measure whether power amplifier board power cord and ground wire impedance is zero Y Change N100, transformer and protector tube to solve Figure 2.2 Troubleshooting flow chart for "Power not on" -3- Change N100 to solve the problem 3. Signal waveform diagram (1) Input waveform diagram of pin 11 of N100 (2) XS4 output signal waveform diagram (3) External input signal waveform diagram -4- 4. Function introduction to TDA7265 (1) Description The TDA7265 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as Hi-Fi music centres and stereo TV sets. (2) Features ◆ WIDE SUPPLY VOLTAGE RANGE (UP TO ?25V ABS MAX.) ◆ SPLIT SUPPLY ◆ HIGH OUTPUT POWER 25 + 25W @THD =10%, RL = 8O?, V S = +20V ◆ NO POPAT TURN-ON/OFF ◆ MUTE (POP FREE) ◆ STAND-BY FEATURE (LOW Iq) ◆ SHORT CIRCUIT PROTECTION ◆ THERMAL OVERLOAD PROTECTION (3) PIN description PIN No Symbol I/O Description 1 -Vs I Negative Power Supply 2 OUT1 O Signal out SL 3 +Vs I Positive Power Supply 4 OUT2 O Signal out SR 5 MUTE I Mute control 6 -Vs I Negative Power Supply 7 IN2+ I Non-Inverting Input Pin SR 8 IN2- I Inverting Input Pin SR 9 GND I GND 10 IN1+ I Non-Inverting Input Pin SL 11 IN1- I Inverting Input Pin SL 5. MUTE Function Function Vmute Stand-by Mute Play +Vs-1.5~+Vs-3.5 +Vs-5~+Vs-7 Others -5- 6. audio power amplifying Board VD105 C122 LED1 GND R112 N100 W12 W7 R110 VD100 W5 W8 R103 R132 C102 C106 R119 W14 C114 C108 GNDR RP102 C113 R104 C110 W4 R117 3MM C112 R135 R106 C104 C100 C109 C116 R108 C111 R123 RP100 C107 R118 C103 R102 R116 R129 C101 R107 R101 R130 C105 R128 R120 R113 R122 R124 XS2 R127 C120 XS4 R109 R115 R114 C115 R G L R121 2006-04-17 R100 LED2 GND XS5 L 4SP014-0 RP101 2006-04-17 1SP014-0 L G R VD107 T4A L250V T4A L250V R125 W9 GND VD104 C119 R133 R111 C124 LO XP2 R134 W11 G W16 W2 5MM XS3 R131 R105 W10 W3 LED2 VD106 W15 XP3 FL101 FL100 XS1 W13 C123 R126 W1 C121 C118 W6 XC100 VD101 V100 3MM -6- +VS R126 330/1W C102 R103 3 RP102A POT 2 R101 R100 5.6k RP101A POT 2 43K XS4 1U/16V R105 43K R104 R102 100K C103 471 R106 5.6k 1K 11 10 9 C105 562 8 7 R109 OUT(1) IN-(1) 3 +Vs GND +VS 4 OUT(2) IN-(2) 6 -VS CON2 XS5 L GND 1 2 3 LED2 R125 330/1W -VS +VS R119 C109 562 1K 1.2K 43K C114 104 R116 100K C112 471 +VS TREBLE 5.6K RP101B POT 5 56P C113 3.3U/16V 1U/16V R111 43K R110 100K 4 R122 4 RP100B POT 5R123 R132 C111 4 6 6 BASS C115 563 RP102B POT 5 R115 R120 4.7/1W 43K C107 R121 5.6K C116 562 R124 VD100 1N4148 R133 27K VD101 5.6K 1N5404 FL100 XS1 3 2 1 VD102 1N4148 VD100 R100 XP101 1K 5R3HD 2 1 VD101 R101 CON2 1K VD103 5R3HD 1N4148 CON2 C118 104 C119 104 +VS +VS C110 47U 1N5404 VD104 T4A L250V C120 2200U/25V C122 104 C121 2200U/25V C123 104 VD105 T4A L250V VD106 1N5404 FL101 VD107 1N5404 -VS -VS 5.1V R135 27K V100 9014 C124 1U/50V R112 10K R134 200K -7- R118 1K 6 R114 5.6K LED R GND CON3 5 MUTE IN+(2) 5.6k R117 1K GND C108 104 +VS 1 2 TDA7269A CON3 7. CIRCUIT DIAGRAM 2 -Vs 3 2 1 L 1 -Vs IN+(1) XS2 R R113 4.7/1W N100 1 1.2k 1 5.6k R107 LED1 GND 1 2 CON2 R131 1K TREBLE RP100A POT 2R108 3.3U/16V 1 3 3 BASS C104 563 1K C100 562 C101 56P C106 XS3 8. BOM List MATERIAL CODE MATERIAL NAME SPECIFICATIONS LOCATION 6.1 AMPLIFIER BOARD SP-014(RU) SILVER WHITE 5448382 2100003 CONNECTED CORDS F 0.6 SHAPED 7.5mm W1,W4,W5,W10~W12,W14,W16 2100004 CONNECTED CORDS F 0.6 SHAPED 10mm W2,W8,W9,W13,W15 2100007 CONNECTION CORDS F 0.6 SHAPEN 15mm W3,W6 2100006 CONNECTION CORDS F 0.6 SHAPED 12.5mm W7 0000129 CARBON FILM RESISTOR 1/6W1K±5% SHAPED 7.5 R101,R104,R115 0000124 CARBON FILM RESISTOR 1/6W470O±5% SHAPED 7.5 R103,R118 0000130 CARBON FILM RESISTOR 1/6W1.2K±5% SHAPED 7.5 R107,R122 0000135 CARBON FILM RESISTOR 1/6W5.6K±5% SHAPED 7.5 R106,R114,R100,R108,R121,R123,R109,R1 24 0000137 CARBON FILM RESISTOR 1/6W10K±5% SHAPED 7.5 R112 0000146 CARBON FILM RESISTOR 1/6W100K±5% SHAPED 7.5 R110,R102,R116 0000141 CARBON FILM RESISTOR 1/6W27K±5% SHAPED 7.5 R133,R135 0000148 CARBON FILM RESISTOR 1/6W200K±5% SHAPED 7.5 R134 0000283 CARBON FILM RESISTOR 1/4W1K±5% SHAPED 10 R117 0000618 CARBON FILM RESISTOR 1/6W43K±5% SHAPED 7.5 R105,R119,R131,R132,R111 0000639 CARBON FILM RESISTOR 1/2W3.3O±5% SHAPED 12.5 R120,R113 0010095 METAL FILM RESISTOR 1W330O±5% SHAPED R 15×8 R125,R126 0200053 PORCELAINCAPACITOR 50V 47P±10% 2.5mm C106,C107 0200066 PORCELAINCAPACITOR 50V 221±10% 2.5mm C103,C112 0210031 TERYLENECAPACITOR 100V 224±10% 8mm C118,C119 0210060 TERYLENECAPACITOR 100V 563±10% 6mm C115,C104 0210078 TERYLENECAPACITOR 100V 562±10% 3.5mm C100,C105,C109,C116 CL21X 100V 104±10% 5 C108,C114,C122,C123 0260025 CD CD11 16V47U±20%5×11 2 C110 0260063 CD CD11 50V1U±20%5×11 2 C101,C111,C124 0260019 CD CD11 16V10U±20%5×11 2 C102,C113 0260134 CD CD11 25V4700U±20%16×35 7.5 C120,C121 ① 0260135 CD CD11 25V4700U±20%16×40 7.5 C120,C121 ① 0570006 DIODE 1N4148 VD100 0210109 METAL POLYESTER FILMCAPACITOR -8- MATERIAL CODE MATERIAL NAME 0570020 DIODE SPECIFICATIONS LOCATION 1N5404 VD104,VD106,VD107,VD108 5.1V 1/2W VD101 0780032 TRIODE 9014C V100 2110336 LEAD 20# 150mm BLACK,WITH WELD PIECE 接地线 1940002 SOCKET 3P 2.5mm XS2,XS5 1940001 SOCKET 2P 2.5mm XS4,XS3 1940040 SOCKET 3P 3.96mm XS1 2300006 FUSE T4AL 250V FL100,FL101 0580006 VOLTAGE REGULATOR DIODE 3870057 FUSE HOLDER ROTATED POTENTIOMETER ROTATED 0160036 POTENTIOMETER 0160035 1564300 PCB FL100,FL101 D161GOAX-V1B503-016 RP100,RP101 D161GOAX-V1B503-017 RP102 @4SP014-0 UL 6.2 INPUT OUTPUT BOARD SP-014(RU)SILVER WHITE 5448383 0000129 CARBON FILM RESISTOR 1/6W1K±5% SHAPED 7.5 R129,R127 0000144 CARBON FILM RESISTOR 1/6W47K±5% SHAPED 7.5 R130,R128 1564299 PCB 1SP014-0 2122009 FLAT CABLE 3P140 2.5 2 PIN,WITH NEEDLE, REVERSE XP3 2150106 FLAT CABLE 3P90 2.5 2 PIN,2P SHIELD,WITH NEEDLE XP2 1910257 TERMINAL SOCKET AV4-8.4-14-68 XC100 6.3 INDICATOR LIGHT BOARD SP-014(RU)SILVER WHITE 5448384 0000129 CARBON FILM RESISTOR 1/6W1K±5% SHAPED 7.5 R100,R101 0570006 DIODE 1N4148 VD102,VD103 0620040 RADIATION DIODE 3B 4SC WHITE ISSUE BLUE VD100,VD101 1940001 SOCKET 2P 2.5mm XP101 2121489 2P230 2.5 2 PIN, WITH L NEEDLE, REVERSE XP101 2122174 FLAT CABLE 2P300 2.5 1 PIN,RED BLACK 20# CORD XP101 1564301 PCB ASP014-0 FLAT CABLE -9- MATERIAL CODE MATERIAL NAME SPECIFICATIONS 6.4 AMPLIFIER UNIT SP-014(RU)SILVER WHITE 5462340 0881102 IC TDA7265 Multiwatt11 0200219 CERAMICCAPACITOR CT7 400V 103±20% 10mm 1350029 POWER SUPPLY SWITCH PS8-11 2# 0460599 SQUARENESS TRANSFORMER @SP-014 CQC 2140347 POWER SUPPLY CORD EUROPE SPECS @2P 1.9m 2.5A MA-800S VDE 2300002 FUSE T1AL 250V 5231803 CLASP THC-5 3871936 REAR BOARD SP-014(RU) 4660010 INVERTED TUBE F 31×F 34×65 2# 3022122 ADJUST BUTTON BSD02 BLACK 3580228 RADIATOR 90×90×16 SP-014 4000048 SELF-TAPPING SCREW PB 3×8 COLOR ZINC 4000151 SELF-TAPPING SCREW PB 3×12H COLOR ZINC 4000450 SELF-TAPPING SCREW BT 3×6H COLOR ZINC 4000453 SELF-TAPPING SCREW BT 3×8H WHITE NICKEL 4000387 SELF-TAPPING SCREW PA3×12H COLOR ZINC 4210019 MACHINE-TAPPING SCREW PWM 4×12×9 COLOR ZINC 4210048 MACHINE-TAPPING SCREW PM 3×8 COLOR ZINC 4400002 NUT M4 4400001 NUT M3 4400028 NUT OF POTENTIOMETER M7 3870634 IC PRESSING PIECE AV220 3540074 SCREEN-SHIELDED PIECE SP-13 4450032 ROUND PAD F 7×12×0.5 4450014 BOLT PAD F 4×10×0.8 4450033 BOLT PAD f 8×15×2.5 4490002 SPRING PAD F4 5231418 MICA PAD 22×22×0.1 5232281 INSULATED SPACER SET F 3×6×3.2 5233838 PYROCONDENSATION SLEEVE @F 22 UL -10- MATERIAL CODE MATERIAL NAME SPECIFICATIONS 5234967 PYROCONDENSATION SET DIPE @F 3 UL 5234966 PYROCONDENSATION SET DIPE @F 4 UL 5230010 NYLON BANDAGE 100mm 5180399 NOT DMETAL OXIDE FILM RESISTOR GLUE LABELL FUSE T1AL250V 5235157 AIRPROOF STRIP 111.4×11×1 SPONGE 5235158 AIRPROOF STRIP 236.4×11×1 SPONGE 5231797 SOFT SPONGE SPACER 45×20×1.5 SINGLE-FACED,HARD 5235222 SOFT SPONGE SPACER 101.4×10×1 SINGLE-FACED SOFT 5231799 HEAT-INSULATION SPONGE SPACER 96×21.4×3 SINGLE-FACED,HARD 5448382 PCB SEMI-FINISHED PRODUCT 4SP014-0 SP-014(RU) 5448383 PCB SEMI-FINISHED PRODUCT 1SP014-0 SP-014(RU) 6.5 SPEAKER BODY WITH FOAM MATERIAL CODE MATERIAL NAME SPECIFICATIONS 3080518 SPEAKER BODY SP-014(RU) MAIN SILVER WHITE 3080519 SPEAKER BODY SP-014(RU) ASSISTANT SILVER WHITE 5041089 FOAM FM-010142 5041090 FOAM FM-020142 4660007 INVERTED TUBE F 31×F 34×65 5232147 PVC PEEL M-815A-28 6.6 SN LABEL SP-014(RU)SILVER WHITE 5142076 MATERIAL CODE MATERIAL NAME 5142067 SPECIFICATIONS SN LABEL RUSSIA WITHOUT BAR CODE NUMBER 6.7 SUPPLEMENT MODULE MATERIAL CODE MATERIAL NAME SPECIFICATIONS 5110002 ELECTRO WELDING WIRE F 1.0 5110018 ELECTRO WELDING WIRE f 2.0 5110004 ADHESIVE TAPE 5110003 ELECTRO WELDING WIRE 5120096 PEANUT OIL 5120001 THINNER 5120004 SOLDERING FLUX -11- MATERIAL CODE MATERIAL NAME SPECIFICATIONS 5120011 WIPING WATER 5120012 RED GLUEWATER 5120332 SILICONE GREASE HEAT CONDUCT OIL GB-304 5120067 GLUEWATER 502 5230021 SCOTCH TAPE 12mm 5230022 SEALING PAPER COLORLESS 5231514 HIGH TEMPERATURE MASKING PAPER LENGTH:15 YARD WIDTH:20mm 5231454 HIGH TEMPERATURE MASKING PAPER LENGTH:15 YARD WIDTH:6mm 5231455 HIGH TEMPERATURE MASKING PAPER LENGTH:15 YARD WIDTH:12mm 5231456 HIGH TEMPERATURE MASKING PAPER LENGTH:15 YARD WIDTH:24mm 5120009 WHITE PRESSURE OIL 5230020 MASKING PAPER 24mm 5280353 SILVER LACQUER PEN SILVER WHITE 2100002 CONNECTION CORDS F 0.6 -12-