SP-014 service manual
Contents
1. 200U 25V 104 VS RIOS 43K N100 TDA7269A R119 BK rad R132 BK R118 56P C113 3 3U 16V 8 BOM List er MATERIAL NAME SPECIFICATIONS LOCATION 6 1 AMPLIFIER BOARD SP 014 RU SILVER WHITE 5448382 2100003 CONNECTED CORDS 2100006 CONNECTION CORDS CARBON FILM RESISTOR 1 6W1K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W4700 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W1 2K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W5 6K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W10K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W100K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W27K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 6W200K 5 SHAPED 7 5 CARBON FILM RESISTOR 1 4W1K 5 SHAPED 10 CARBON FILM RESISTOR 1 6W43K 5 SHAPED 7 5 R105 R119 R131 R132 R111 CARBON FILM RESISTOR 1 2W3 30 5 SHAPED 12 5 R120 R113 METAL FILM RESISTOR 1W3300 5 SHAPED R 15x8 2100004 CONNECTED CORDS 2100007 CONNECTION CORDS m TI TI TI e e e e o o o o 0 0 0 0 TI I SE TI gt gt gt gt U U U U m m m m O Z O O pla s 2a a 3 3 8 3 3 3 5 3 0000129 0000124 0000130 0000135 0000137 0000146 0000141 0000148 0000283 0000618 0000639 0010095 0200053 PORCELAINCAPACITOR 50V 47P 10 2 5mm 0200066 PORCELAINCAPACITOR 50V 221 10 2 5mm 0210031 TERYLENECAPACITOR 100V 224 10 8mm 0210060 TERYLENECAPACITOR 100V 563 10 6mm 0210078 TERYLE2. HAPED 7 5 3B 4SC WHITE ISSUE BLUE 2P230 2 5 2 PIN WITH L NEEDLE 2P300 2 5 1 PIN RED BLACK 204 CORD ES 0000129 0570006 0620040 RADIATION DIODE 1940001 SOCKET 2121489 FLAT CABLE 2122174 FLAT CABLE 1564301 U O D N a ASI U lt D R S m y R R a 3 o m 3 SP 014 RU SILVER WHITE 5462340 10 SP 014 RU SILVER WHITE 5142076 sm formem sms Bonn a pam sam jem EN as fermera STE MATERIAL CODE 5120011 5120012 5120332 5120067 5230021 5230022 5231514 5231454 5231455 5231456 5120009 5230020 5280353 2100002 mow TOT E EE E 12
3. NECAPACITOR 100V 562 10 3 5mm C100 C105 C109 C116 CL21X 100V 104 10 5 C108 C114 C122 C123 CD11 16V47U 20 5x11 2 C110 CD11 50V1U 20 5x11 2 C101 C111 C124 CD CD11 16V10U 20 5x11 2 0210109 0260025 CD 0260063 CD 0260019 0260134 CD CD11 25V4700U 20 16x35 7 5 0260135 CD CD11 25V4700U 20 16x40 7 5 0570006 DIODE METAL POLYESTER FILMCAPACITOR z K Em gt 00 MATERIAL CODE MATERIAL NAME SPECIFICATIONS LOCATION VD104 VD106 VD107 VD108 20 150mm BLACK WITH WELD PIECE Boo D161GOAX V1B503 016 D161GOAX V1B503 017 0570020 DIODE 0580006 VOLTAGE REGULATOR 0780032 TRIODE 2110336 LEAD 1940002 SOCKET 1940001 1940040 SOCKET 2300006 FUSE 3870057 FUSE HOLDER 0160035 POTENTIOMETER 0160036 w N w q amp T TU Q Z Zle I a lt lt m O ol o O S 3 3 N gt 2131313 POTENTIOMETER 1564300 PCB AK 0 U ke o c d 2 D o ojo O O 5 gt m gt Q z 12 3 m m m m Oe o N z U c O c 4 U c 4 w gt J O SP 014 RU SILVER WHITE 5448383 0000129 CARBON FILM RESISTOR 1 6W1K 5 SHAPED 7 5 0000144 CARBON FILM RESISTOR 1 6W47K 5 SHAPED 7 5 1564299 PCB p 0 3P140 2 5 2 PIN WITH NEEDLE REVERSE 3P90 2 5 2 PIN 2P SHIELD WITH NEEDLE 1910257 TERMINAL SOCKET RU 2122009 FLAT CABLE 2150106 FLAT CABLE AV4 8 R R co SP 014 RU SILVER WHITE 5448384 CARBON FILM RESISTOR 1 6W1K 5 S
4. 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 capacit
5. or 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 Left channel has no output whether pin 1 or 3 of power amplifier board XS2 has waveform after inputting signals Check whether positive waveform of capacitor C101 or C111 is normal Change RP102 Whether waveform of pin 2 4 of N100 is normal Change N100 Change loudspeaker Change R127 and R129 Change input terminal Figure 2 1 troubleshooting flow chart for Left channel has no output 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 whether power amplifier board power voltage 22V is whether power amplifier board protector ube has been burn down Change N100 to solve the problem Change C120 C121 C122 C123 and check hetherthe troubl Change transformer and protector tube anditis OK Change N100 to solvethe problem whether protecto tube of power amplifier board has been bura Measure hether power amplifi board power cord and ground wire im
6. pedance is zero Change N100 transformer and protector tube to solve Figure 2 2 Troubleshooting flow chart for Power not on 3 Signal waveform diagram 1 Input waveform diagram of pin 11 of N100 WWW 2 XS4 output signal waveform diagram VV VV 3 External input signal waveform diagram NN 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 80 VS 20V NO POPAT TURN ON OFF MUTE POP FREE STAND BY FEATURE LOW Iq SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION 3 PIN description 5 MUTE Function Function Stand by Mute Play 6 audio power amplifying Board Tia ya Rida 7 CIRCUIT DIAGRAM C100 cl 562 RPIOIA R107 2 POT q b 1 2k E c10s 562 FL100 IK C101 117 IK 10 16V RP102B ror ci R115 TK 1U 16V IR116 100K C112 XS2 R R109 T L 5 6k CON3 m A E E VD102 1N4148 XPI01 GND Te 5R3HD LED ar com R101 IK 5R3HD VD108 1n4148 E TAA L250V FL101 CDD C2 2
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