SP-014
servicemanual
SP-014PrincipleandServicing
1.SP-014workingprinciple
ExternalinputsignalsareinputtedtoinputboardbySC1,anditsleftchannelsignaloutputstopin3
ofsocketXSthroughR127,topoweramplifierboardthroughflatcableXP2;afterreachingpower
amplifierboard,itisdividedinto2paths,onepathreachespotentiometerRP100Aforbassadjustment
throughR100(RP100isduplicatepotentiometer,whichcanadjustleftandrightchannelsatthesame
time);theotherpathsreachespotentiometerRP101AfortrebleadjustmentthroughcapacitorC100
(RP101isduplicatepotentiometer,whichcanadjustleftandrightchannelsatthesametimes);andthe
twopathscombineonepathaftertreble/bassadjustmentthroughresistorR108,R107tosendto
potentiometerRP102Aforvolumeadjustment(RP102isduplicatepotentiometer,whichcanadjustleft
andrightchannels);volumeadjustmentsignals,throughR101dampingandC101coupling,aresentto
pin11ofN100TDA7265forpoweramplifying(TDA7265isadual-channelpowerIC),thenoutput
signalsthroughpin2afteramplificationtoloudspeakerdirectly.Signalfloedirectionofrightchannelis
similarwiththatofleftchannel.
Thisplayeriswithpower-onmutefunction,anditsprincipleis:whenpoweron,+VScharges
capacitorC110throughR110,triodeV100cutsoff,MUTEpinofTDA7265inputshighlevel,muteof
TDA7265iseffective,thewholesethasnooutput;whencapacitorC110isincharging,positivevoltage
increasesto6V,V100ison,MUTEturnsintolowlevel,muteisoff,outputisnormalandtheconcussion
soundisremovedwhenpoweron.
2.Troubleshootingflow
(1)LeftchannelhasnooutputTroubleshootingflowfor“”osshownasthefollowingfigure2.1:
-1-
Leftchannelhasnooutput
Check
whetherpin1(or
3)ofpoweramplifier
boardXS2haswaveform
afterinputting
signals
N
ChangeR127andR129
N
Changeinputterminal
Y
whetherpositive
waveformofcapacitor
C101(orC111)is
Check
Y Y
normal
Whether
waveformofpin2,4of
N100isnormal
N N
ChangeRP102
ChangeN100
Figure2.1troubleshootingflowchartfor"Leftchannelhasnooutput"
Changeloudspeaker
-2-
(2)Troubleshootingprocessfor“Powernoon”isshownasthefollowingfigure2.2:
Powernoton
Check
whetherprotector
tubeonpowercordhas
beenburnt
down
Y
Check
whetherprotector
tubeofpoweramplifier
boardhasbeenburnt
down
Y
Measure
whetherpoweramplifier
boardpowercordandground
wireimpedance
iszero
Y
ChangeN100,transformer
andprotectortubetosolve
Check
N
N
whetherpower
amplifierboardprotector
tubehasbeenburnt
down
Change
C120,C121,
C122,C123andcheck
whetherthetrouble
isremoved
Changetransformerand
protectortubeanditisOK
Check
N
Y
N
whetherpower
amplifierboardpower
voltage+/-22Vis
normal
ChangeN100tosolvetheproblem
ChangeN100tosolvethe
N
problem
Figure2.2Troubleshootingflowchartfor"Powernoton"
-3-
3.Signalwaveformdiagram
(1)Inputwaveformdiagramofpin11ofN100
(2)XS4outputsignalwaveformdiagram
(3)Externalinputsignalwaveformdiagram
-4-
4.FunctionintroductiontoTDA7265
(1)Description
TheTDA7265isclassABdualAudiopoweramplifierassembledintheMultiwattpackage,specially
designedforhighqualitysoundapplicationasHi-FimusiccentresandstereoTVsets.
(2)Features
WIDESUPPLYVOLTAGERANGE(UPTO?25VABSMAX.)
◆
◆
SPLITSUPPLY
◆
HIGHOUTPUTPOWER25+25W@THD=10%,RLS=+20V
◆
NOPOPATTURN-ON/OFF
◆
MUTE(POPFREE)
◆
STAND-BYFEATURE(LOWIq)
◆
SHORTCIRCUITPROTECTION
◆
THERMALOVERLOADPROTECTION
(3)PINdescription
=8O?,V
PIN No Symbol I/O Description
1 I Negative Power Supply
2 OUT1 O Signal out SL
3 I Positive Power Supply
4 OUT2 O Signal out SR
5 M UTE I Mute control
6 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
-Vs
+Vs
-Vs
5.MUTEFunction
Function
Vmute
Stand-by
+Vs-1.5~+Vs-3.5
-5-
Mute
+Vs-5~+Vs-7
Play
Others
6. audio power amplifying Board
XC100
XP3
R127
R128
R130
R129
XP2
LED2
G
LO
L
G
R
1SP014-0
C118
XS1
C119
4SP014-0
2006-04-17
XS2
R
G
L
C105
FL100
T4A L250V
2006-04-17
R100
R114
R109
R124
C116
C109
FL101
T4A L250V
C115
C100
RP101
R121
R106
C104
VD107
RP100
VD105
VD106
VD104
R125
LED2
GND
R122
R107
R108
R123
L
XS5
C111
W16
W2
C101
R101
W14
C108
GNDR
R115
C120
R120
C114
R113
RP102
C121
GND
XS4
C113
R104
R119
C103
W15
C107
R118
R102
C122
R132
R116
C123
W13
W6
C102
R117
C112
R126
W1
C106
C124
R131
C110
W4
R105
W3
W10
W8
W12
R103
W7
R110
VD101
W11
VD100
W9
XS3
N100
V100
LED1
GND
5MM
R134
R133
R111
R112
W5
3MM3MM
R135
- 6 -
R100
5.6k
3
RP100A
POT
C104
BASSBASS
563
1
R106
5.6k
XS2
R
3
2
1
L
CON3
R114
5.6K
RP100B
POT
C115
563
4 6
R121
5.6K
VD102
1N4148
XP101
GND
2
1
LED
7. CIRCUIT DIAGRAM
CON2
R100
1K
R101
1K
VD100
5R3HD
VD101
5R3HD
R108
2
5.6k
R123
5
5.6K
R107
1.2k
R109
5.6k
R122
1.2K
XS1
CON2
R124
5.6K
3
2
1
+VS
C102
RP102A
POT
R101
2
1 3
4 6
RP102B
POT
5
1K
R115
1K
C100
562
RP101A
POT
2
TREBLETREBLE
1 3
C105
562
C109
562
RP101B
POT
5
4 6
C116
562
FL100
C118
104
C119
104
T4A L250V
T4A L250V
FL101
C101
1U/16V
C111
1U/16V
1N5404
1N5404
1N5404
1N5404
VD104
VD105
VD106
VD107
R102
100K
R116
100K
3.3U/16V
C103
471
R117
1K
C112
C120
2200U/25V
C121
2200U/25V
R103
1K
R104
471
+VS
-VS
C122
104
C123
104
1K
11
10
R118
1K
+VS V100
-VS
C106
N100
9
8
7
TDA7269A
C113
3.3U/16V
R105 43K
IN+(1)
IN-(1)
GND
IN-(2)
IN+(2)
R119
43K
C107
56P
56P
OUT(1)
+Vs
OUT(2)
MUTE
R110
100K
C110
47U
R131
43K
R113
C124
1U/50V
R134
200K
R112
10K
4.7/1W
C108
104
R120
4.7/1W
C114
104
1
-Vs
2
3
+VS
-VS
R135
27K
+VS
-VS
+VS
R111
43K
R133
27K
9014
4
5
6
-Vs
R132
43K
VD100
1N4148
VD101
5.1V
R126
330/1W
XS3
1
2
CON2
XS4
1
2
CON2
XS5
1
2
3
CON3
LED1
GND
R
GND
L
GND
LED2
R125
330/1W
+VS
- 7 -
VD103
1N4148
8. BOM List
MATERIAL
CODE
6.1 AMPLIFIER BOARD
SP-014(RU) SILVER WHITE 5448382
2100003 CONNECTED CORDS F0.6 SHAPED 7.5mm W1,W4,W5,W10~W12,W14,W16
2100004 CONNECTED CORDS F0.6 SHAPED 10mm W2,W8,W9,W13,W15
2100007 CONNECTION CORDS F0.6 SHAPEN 15mm W3,W6
2100006 CONNECTION CORDS F0.6 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
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
MATERIAL NAME SPECIFICATIONS LOCATION
R106,R114,R100,R108,R121,R123,R109,R1
24
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
0210109
0260025 CD CD11 16V47U±20%5×11 2 C110
0260063 CD CD11 50V1U±20%5×11 2
0260019 CD CD11 16V10U±20%5×11 2 C102,C113
METAL POLYESTER
FILMCAPACITOR
CL21X 100V 104±10％ 5
C108,C114,C122,C123
C101,C111，C124
0260134 CD CD11 25V4700U±20%16×35 7.5
0260135 CD CD11 25V4700U±20%16×40 7.5
0570006 DIODE 1N4148 VD100
-8-
C120,C121 ①
C120,C121 ①
MATERIAL
CODE
MATERIAL NAME SPECIFICATIONS LOCATION
0570020 DIODE 1N5404 VD104,VD106,VD107,VD108
0580006
VOLTAGE REGULATOR
DIODE
5.1V 1/2W VD101
0780032 TRIODE 9014C V100
2110336 LEAD 20# 150mm BLACK,WITH WELD PIECE
1940002 SOCKET 3P 2.5mm
接地线
XS2，XS5
1940001 SOCKET 2P 2.5mm XS4,XS3
1940040 SOCKET 3P 3.96mm XS1
2300006 FUSE T4AL 250V FL100,FL101
3870057 FUSE HOLDER FL100,FL101
0160035
0160036
ROTATED
POTENTIOMETER
ROTATED
POTENTIOMETER
D161GOAX-V1B503-016 RP100,RP101
D161GOAX-V1B503-017 RP102
1564300 PCB @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 FLAT CABLE
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
-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 F31×F34×65 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 F7×12×0.5
4450014 BOLT PAD F4×10×0.8
4450033 BOLT PAD f8×15×2.5
4490002 SPRING PAD F4
5231418 MICA PAD 22×22×0.1
5232281 INSULATED SPACER SET F3×6×3.2
5233838 PYROCONDENSATION SLEEVE @F22 UL
-10-
MATERIAL CODE MATERIAL NAME SPECIFICATIONS
5234967 PYROCONDENSATION SET DIPE @F3 UL
5234966 PYROCONDENSATION SET DIPE @F4 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 F31×F34×65
5232147 PVC PEEL M-815A-28
6.6 SN LABEL
SP-014(RU)SILVER WHITE 5142076
MATERIAL CODE MATERIAL NAME SPECIFICATIONS
5142067 SN LABEL RUSSIA WITHOUT BAR CODE NUMBER
6.7 SUPPLEMENT MODULE
MATERIAL CODE MATERIAL NAME SPECIFICATIONS
5110002 ELECTRO WELDING WIRE F1.0
5110018 ELECTRO WELDING WIRE f2.0
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 F0.6
-12-
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