Pioneer A-207 MLXJ Service Manual Download Page 16 | Manualshive

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4.3 AF ASSY

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Summary of Contents for A-207 MLXJ

Page 1: ...3 SCHEMATIC DIAGRAM 6 4 PCB CONNECTION DIAGRAM 14 5 PCB PARTS LIST 22 6 ADJUSTMENT 25 CONTENTS 7 GENERAL INFORMATION 26 7 1 IC 26 7 2 DISASSEMBLY 27 7 3 BLOCK DIAGRAM 28 8 PANEL FACILITIES AND SPECIFICATIONS 29 THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL S AND TYPE S Type Model A 207 MLXJ SDXJ AC220 230V Power Requirement The voltage can be converted by the following method With the voltage s...

Page 2: ...chanical parts in the appliance have special safety related characteristics These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage wattage etc Replacement parts which have these special safety characteristics are identified in this Service Manual Electrical components having such features ...

Page 3: ... product are used for disassembly 1 Operating Instructions ARE7158 English Spanish Chinese 2 Side Pad L AHA7205 3 Side Pad R AHA7206 4 Sub Pad AHA7218 5 Packing Case AHD7562 NSP 6 Literature Bag AHG1180 7 Packing Sheet AHG7015 8 Caution Label 220V See Contrast table 2 9 Power Cord See Contrast table 2 1 PACKING PARTS LIST 2 CONTRAST TABLE A 207 MLXJ and SDXJ are constructed the same except for the...

Page 4: ... 41 18 28 37 39 34 35 5 41 16 1 2 9 45 31 33 31 32 38 27 27 44 14 39 21 21 39 14 47 17 12 22 19 19 23 23 23 13 39 SDXJ Types Only 42 39 40 39 39 7 15 39 4 43 8 15 15 15 6 39 11 17 39 39 26 26 39 39 39 39 36 SDXJ Types Only ...

Page 5: ...41 29 30 31 Rotary Knob A AAB7148 32 Rotary Knob B AAB7149 33 Volume Knob AAB7150 34 Speaker Button AAD7435 35 Power Joint AAD7439 36 Bnnet Case ANE7183 37 Panel Base AMB7489 38 Front Panel AMB7492 39 Screw BBZ30P080FZK 40 Screw BCZ30P060FCC 41 Nut NK90FUC 42 Voltage Selector S2 See Contrast table 2 43 Fuse FU2 FU3 2A See Contrast table 2 44 LED Lens A AAK7537 45 PIONEER Badge PAM1755 46 47 Foot R...

Page 6: ...A 207 6 A B C D 1 2 3 4 1 2 3 4 3 SCHEMATIC DIAGRAM 3 1 OVERALL CONNECTION DIAGRAM B HEAD PHONE ASSY AWX7114 F FRONT R ASSY AWX7121 A VOLUME ASSY AWX7112 D AF ASSY AWX7116 451 ...

Page 7: ...efer to EXPLODED VIEWS and PARTS LIST or PCB PARTS LIST E FRONT L ASSY AWX7122 C AC PRIMARY ASSY AWX7113 MLXJ AWX7115 SDXJ SDXJ type AKP1053 SDXJ only MLXJ type SDXJ type SDXJ type 14 16 18 1602 POWER CORD MLXJ type SDXJ type POWER TRANSFORMER POWER TRANSFORMER VOLTAGE SELECTOR ...

Page 8: ...A 207 8 A B C D 1 2 3 4 1 2 3 4 3 2 VOLUME AND HEAD PHONE ASSEMBLIES A B B HEAD PHONE ASSY AWX7114 D J551A A VOLUME ASSY AWX7112 E J3 D CN203 2 2 AUDIO SIGNAL ROUTE ...

Page 9: ... type SDXJ model NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE WITH SAME TYPE AND RATINGS ONLY CAUTION LIVE NEUTRAL TO POWER TRANSFORMER TO POWER CORD TO S2 VOLTAGE SELECTOR REK1023 T1 25AL250V REK1023 T1 25AL250V FU1 REK1023 MLXJ type T1 25AL250V REK1030 SDXJ type T6 3AL250V POWER ASG1035 ...

Page 10: ...A 207 10 A B C D 1 2 3 4 1 2 3 4 3 4 AF ASSY BA BA BA BA BA BA 1 4WR 1 4WR 1 4WR 1 4WR A CN501 IDLE ADJ R CH IDLE ADJ L CH D ...

Page 11: ... 6 7 8 BA CEBA F CN601 D AF ASSY AWX7116 B J551 AUDIO SIGNAL ROUTE DJ DJ CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE NO 491001 MFD BY LITTELFUSE INK FOR IC454 AEK7009 TO POWER TRANSFORMER D ...

Page 12: ...A 207 12 A B C D 1 2 3 4 1 2 3 4 3 5 FRONT L AND FRONT R ASSEMBLIES E E FRONT L ASSY AWX7122 D CN202 A CN502 FRONT L ASSY S702 LOUDNESS S703 SPEAKER A S704 SPEAKER B SP A F ...

Page 13: ...A 207 13 A B C D 5 6 7 8 5 6 7 8 F F FRONT R ASSY AWX7121 FRONT R ASSY S601 INPUT SELECTOR CD TUNER PHONE LINE TAPE1 MD S602 DIRECT S603 TAPE2 MONITOR INPUT SELECTOR NC NC NC NC ...

Page 14: ...nformation for respective destinations be sure to check with the schematic diagram 4 View point of PCB diagrams Symbol In PCB Diagrams Symbol In Schematic Diagrams Part Name B C E D D G G S S B C E B C E D G S B C E B C E B C E Transistor Transistor with resistor Field effect transistor Resistor array 3 terminal regulator Capacitor Connector P C Board Chip Part SIDE A SIDE B SIDE A SIDE B VOLUME A...

Page 15: ...4 1 2 3 4 4 2 HEADPHONE AND AC PRIMARY ASSEMBLIES B C ANP7232 A HEADPHONE ASSY B J551A D ANP7232 A HEADPHONE ASSY B ANP7232 A POWER TRANSFORMER POWER CORD VOLTAGE SELECTOR SDXJ type only AC PRIMARY ASSY C SIDE A SIDE A SIDE B ...

Page 16: ...A 207 16 A B C D 1 2 3 4 1 2 3 4 4 3 AF ASSY D AF ASSY D POWER TRANSFORMER ...

Page 17: ...A 207 17 A B C D 5 6 7 8 5 6 7 8 D SIDE A F CN601 A CN501 B J551 ANP7232 A Q153 Q341 IC101 IC451 IC453 Q333 Q336 Q324 Q326 Q452 IC301 Q451 Q323 Q325 IC454 VR301 VR302 ...

Page 18: ...A 207 18 A B C D 1 2 3 4 1 2 3 4 D AF ASSY D ...

Page 19: ... B C D 5 6 7 8 5 6 7 8 D SIDE B ANP7232 A Q151 IC151 Q152 Q338 Q337 Q340 Q339 Q102 Q101 Q104 Q103 Q332 Q328 Q327 Q318 Q330 Q322 Q320 Q316 Q314 Q312 Q310 Q304 Q303 Q311 Q309 Q315 Q313 Q321 Q319 Q317 Q329 Q331 Q343 ...

Page 20: ...A 207 20 A B C D 1 2 3 4 1 2 3 4 4 4 FRONT L ASSY E ANP7231 A FRONT L ASSY E Q702 Q703 Q704 Q705 Q708 Q707 VR751 VR752 Q701 IC751 ANP7231 A J602 F CN502 A J603A G FRONT L ASSY E SIDE A SIDE B ...

Page 21: ...A 207 21 A B C D 1 2 3 4 1 2 3 4 4 5 FRONT R ASSY F FRONT R ASSY F ANP7231 A CN202 D J602A E IC601 VR601 FRONT R ASSY F ANP7231 A Q601 Q606 Q614 Q616 Q608 Q613 SIDE A SIDE B ...

Page 22: ... 101 561 RD1 4PU 5 6 1 J 47k Ω 47 10 3 473 RD1 4PU 4 7 3 J 0 5 Ω R50 RN2H Â 5 0 K 1 Ω 1R0 RS1P 1 Â 0 K Ex 2 When there are 3 effective digits such as in high precision metal film resistors 5 62k Ω 562 10 1 5621 RN1 4PC 5 6 2 1 F 7 LIST OF ASSEMBLIES Part No A 207 MLXJ A 207 SDXJ Mark PCB Assemblies Remarks NSP CONTROL ASSY AWG7012 AWG7012 FRONT R ASSY AWX7121 AWX7121 FRONT L ASSY AWX7122 AWX7122 N...

Page 23: ... Q330 2SA1162 Q313 Q314 Q321 Q322 2SA1255 Q452 2SA1837 Q309 Q310 Q327 Q328 2SC2712 Q315 Q316 Q319 Q320 2SC3138 Q303 Q304 2SC3326 Q451 2SC4793 Q101 Q104 2SK303 Q151 DTA124EK Q152 DTC124EK Q153 DTC124ES Q331 Q332 Q343 DTC143EK Q333 Q336 DTC143ES Q317 Q318 IMX1 Q323 Q324 IRF530 Q325 Q326 IRF9530 D101 D104 D151 D301 D310 1SS355 D401 D404 1SS355 D451 D5SBA20 D452 D455 D459 D460 S5566G D461 S5566G D311 ...

Page 24: ...ONNECTOR 19P HLEM19S 1 CN203 16P PLUG KM200TA16 PCB BINDER VEF1040 KN101 EARTH METAL FITTING VNF1084 KN201 EARTH METAL FITTING VNF1084 KN301 EARTH METAL FITTING VNF1084 KN451 EARTH METAL FITTING VNF1084 FRONT R ASSY SEMICONDUCTORS IC601 PD5443A Q609 2SA1162 Q610 2SC2712 Q611 Q613 Q615 Q616 DTA124EK Q601 Q606 Q608 Q614 DTC124EK F D608 D612 D615 D617 D620 1SS355 D607 SLP6118C51H D601 D606 SLP9118C51...

Page 25: ... Fig 6 1 R373 or R374 2 Turn the POWER switch to ON 3 Adjust VR301 VR302 so that the voltage between both sides of R373 R374 becomes 10mV 1mV 4 Ages for 5 minutes 5 Adjust VR301 VR302 so that the voltage between both sides of R373 R374 becomes 11mV 1mV VR301 VR302 R375 R376 R373 R374 Heat Sink CN202 AF ASSY DC Voltmeter DC Voltmeter SIDE A Heat Sink Heat Sink Heat Sink Fig 6 1 Adjustment Method ...

Page 26: ... 11 P26 IN6 O SPEAKER B INDICATOR 12 P25 IN5 O LOUDNESS INDICATOR 13 P24 IN4 O Not used 14 P23 IN3 O Not used 15 P22 IN2 O DIRECT INDICATOR 16 P21 IN1 O TAPE2 INDICATOR 17 P20 IN0 O FUNCTION switch MUTE 18 VREF I Pulls up to 5V 19 XIN I 4 19MHz 20 XOUT O Ceramic vibrating and connecting terminal 21 VSS Digatal GND 22 VCC Power supply 5V 23 P50 XCIN I SPEAKER B KEY input 7 GENERAL INFORMATION 7 1 I...

Page 27: ... 2 8 7 7 7 9 Screw for Rear Panel Rear Panel Rear Panel Front Panel Diagnose the AF Assy Chassis Chassis 6 6 6 Cutting Pliers PCB Support 3 Unhook lead wires 1 3 2 For Service 10 13 11 12 Be careful not to injure the Front Panel 7 2 DISASSEMBLY ...

Page 28: ...02 UNUSUAL OUTPUT DETECTION TO FUNCTION SW DIRECT LOUDNESS ON OFF FUNC MUTE ON OFF TO PROTECTION RY FROM FUNCTION SEL KEY INPUTS µ COM FROM UNUSUAL OUTPUT DETECTION D IC101 D IC601 F Q507 A Q509 A Q303 RY401 RY402 RY403 D 401 D JA501 B D IC751 VR751 VR752 E VR601 F Q505 A IC151 D ON OFF LOUDNESS VOLUME Q501 Q503 A VR501 A BL BL BH 19 15 TO POWER STAGE TO VOLTAGE STAGE TO µ COM TO OP AMP RY LED 6 B...

Page 29: ...29 A 207 8 PANEL FACILITIES AND SPECIFICATIONS 8 1 PANEL FACILITIES ...

Page 30: ...30 A 207 ...

Page 31: ...31 A 207 8 2 SPECIFICATIONS ...

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