STEREO AMPLIFIER Direct Energy MOS VOLUME POWER CD TUNER PHONO LINE TAPE 1 /MD TAPE 2 MONITOR OFF ON A SPEAKERS B BASS TREBLE BALANCE INPUT SELECTOR PHONES LOUDNESS DIRECT TAPE 2 MONITOR ORDER NO. ­ + ­ + MIN MAX L R RRV1912 The illustration shows the A-307R. A-307R A-207R Type MYXJ/EW MYXJ/GR MVXJ SAMXJ SDXJ ­ ­ ­ STEREO AMPLIFIER THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). Model A-307R A-207R Power Requirement AC220-230V AC220-230V AC220-230V AC110V/120-127V/220V/240V AC110V/120-127V/220V/240V The voltage can be converted by the following method. ­­­­ ­­­­ ­­­­ With the voltage selector With the voltage selector CONTENTS 1. SAFETY INFORMATION ...................................... 2 2. EXPLODED VIEWS AND PARTS LIST ................ 3 3. SCHEMATIC DIAGRAM ....................................... 6 4. PCB CONNECTION DIAGRAM .......................... 14 5. PCB PARTS LIST ............................................... 22 6. ADJUSTMENT .................................................... 25 PIONEER ELECTRONIC CORPORATION 7. GENERAL INFORMATION ................................ 26 7.1 IC ................................................................. 26 7.2 DISASSEMBLY ........................................... 27 7.3 BLOCK DIAGRAM ....................................... 28 8. PANEL FACILITIES AND SPECIFICATIONS .... 29 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923 c PIONEER ELECTRONIC CORPORATION 1998 T - IZK APR. 1998 Printed in Japan A-307R, A-207R 1. SAFETY INFORMATION This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5). When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with the solder. Also, when soldering do not inhale any smoke or fumes produced. NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or be of identical designation. (slow operating fuse) on PCB indicate that replacement parts must REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou de remplacement doivent avoir la même désignation. (fusible de type lent) sur CCI indiquent que les pièces (FOR USA MODEL ONLY) 1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA. 2. PRODUCT SAFETY NOTICE Many electrical and mechanical 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 are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER. Device under test Test all exposed metal surfaces Reading should Leakage not be above current 0.5mA tester Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test 2 A-307R, A-207R 2. EXPLODED VIEWS AND PARTS LIST NOTES: · Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. · The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. · Screws adjacent to mark on the product are used for disassembly. (1) PACKING PARTS LIST Except MVXJ type 18 5 15 (SAMXJ type Only) 7 1 (Except MYXJ/GR type) 2 (MYXJ/EW and MYXJ/GR types Only) 13 3 (MYXJ/EW type Only) 4 (MYXJ/EW, MYXJ/GR and MVXJ types Only) 14 (SAMXJ type Only) 21 (SDXJ type Only) 9 NSP NSP 2.1 PACKING MVXJ type Only 19 20 17 Mark No. 1 Description Part No. 12 6 Operating Instructions See Contrast table(2) (English) 2 Operating Instructions See Contrast table(2) (German) 3 Operating Instructions See Contrast table(2) (French/Italian/Dutch/Swedish/Spanish/Portugese) 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Warranty Card Remote Control Unit (CU-A014) Battery Cover Dry Cell Battery (R6P,AA) Side Pad L Side Pad R Sub Pad Packing Case Literature Bag Packing Sheet Operating Instructions (Chinese) Caution Label 220V Case Label Air Cap Power Cord Power Cord with Fuse Fuse (T5A) Operating Instructions (Spanish/Chinese) See Contrast table(2) AXD7163 AZN2249 VEM-013 AHA7205 AHA7206 AHA7218 See Contrast table(2) AHG1180 AHG7015 See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) 8 10 FR ON NSP T NSP 11 16 (SAMXJ type Only) (2) CONTRAST TABLE A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same except for the following : Part No. Mark No. Symbol and Description ARB7138 ARC7183 ARC7184 ARY7009 AHD7563 Not used Not used Not used Not used ADG1154 Not used Not used Not used A-307R MYXJ/EW MYXJ/GR SAMXJ ARB7142 Not used Not used Not used AHD7581 ARC7186 ARR1003 ARW7032 Not used ADG7018 Not used Not used Not used A-207R SDXJ ARB7142 Not used Not used Not used AHD7564 Not used Not used Not used Not used ADG1158 Not used Not used ARC7185 Remarks MVXJ ARB7138 Not used Not used ARY7009 AHD7561 Not used Not used Not used AHG1087 Not used ADG1156 AEK1046 Not used MYXJ/EW MYXJ/GR ARB7138 ARC7183 ARC7184 ARY7009 AHD7561 Not used Not used Not used Not used ADG1154 Not used Not used Not used Not used ARC7183 Not used ARY7009 AHD7561 Not used Not used Not used Not used ADG1154 Not used Not used Not used NSP 1 Operating Instructions (English) 2 Operating Instructions (German) 3 Operating Instructions (French/Italian/ Dutch/Swedish/Spanish/Portuguese) 4 Warranty Card 11 14 15 16 17 18 19 20 21 Packing Case Operating Instructions (Chinese) Caution Label 220V Case Label Air Cap Power Cord Power Cord with Fuse Fuse (T5A) Operating Instructions (Spanish/Chinese) Not used ARC7183 Not used ARY7009 AHD7563 Not used Not used Not used Not used ADG1154 Not used Not used Not used NSP 3 A-307R, A-207R 2.2 EXTERIOR 39 26 36 39 39 26 39 A-307R Only 24 39 A-307R/ 43 SAMXJ and SDXJ Types Only 8 6 35 3 15 34 37 39 5 1 15 7 2 4 15 39 15 28 25 18 41 38 30 or 45 16 11 27 41 39 27 29 or 44 19 20 A-307R Only 31 33 31 32 39 14 39 17 21 14 21 39 20 A-307R Only 12 22 23 23 19 23 39 9 17 13 39 42 A-307R/SAMXJ and SDXJ Types Only 39 A-307R /SAMXJ 39 Type Only 46 40 4 A-307R, A-207R (1) EXTERIOR PARTS LIST Mark No. 1 2 3 4 5 6 7 8 9 10 NSP 11 12 13 14 15 16 17 18 19 20 NSP NSP NSP NSP 21 22 23 24 25 Description FRONT L Assy FRONT R Assy OPT Assy AC PRIMARY Assy HEADPHONE Assy VOLUME Assy AF Assy Fuse (FU1) Flexible Cable (19P) (AF CN202-FRONT R CN601) ····· Power Transformer (T1) Chassis Rear Panel Insulator Screw Screw Screw (4 × 10) Nut PCB Support Rubber Spacer PCB Holder Cord Clamp F PCB Mold Damping Plate Shield Plate Part No. AWX7123 AWX7124 AWX7125 See Contrast table(2) AWX7114 AWX7118 See Contrast table(2) See Contrast table(2) ADD7032 Mark No. 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Description Screw LED Lens IR Filter LED Lens T Name Plate Rotary Knob A Rotary Knob B Volume Knob Speaker Button Power Joint Bonnet Case Panel Base Front Panel Screw Screw Nut Voltage Selector (S2) Fuse (FU2, FU3 : 2A) LED Lens A PIONEER Badge Label (Rear Base) Part No. PBA1096 AAK2459 AAK7532 See Contrast table(2) See Contrast table(2) AAB7148 AAB7149 AAB7150 AAD7435 AAD7439 ANE7183 AMB7489 See Contrast table(2) BBZ30P080FZK BCZ30P060FCC NK90FUC See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) See Contrast table(2) NSP See Contrast table(2) ANA7064 See Contrast table(2) PNW2766 ABA1018 ABA1027 ABA7047 ABN-065 AEC7006 See Contrast table(2) AEC7057 AEC7134 AMR2533 See Contrast table(2) ANK7043 (2) CONTRAST TABLE A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same except for the following : Part No. Mark No. 4 7 8 8 8 8 Symbol and Description AC PRIMARY Assy AF Assy Fuse (FU1 : 2A) Fuse (FU1 : 2.5A) Fuse (FU1 : 6.3A) Fuse (FU1 : 1.25A) AWX7113 AWX7119 REK1025 Not used Not used Not used ATS7188 Not used ANC7643 AEC7034 AMR7216 AAK7544 AAM7004 ANB7114 Not used Not used Not used Not used Not used A-307R MYXJ/EW MYXJ/GR AWX7113 AWX7119 REK1025 Not used Not used Not used ATS7188 Not used ANC7643 AEC7034 AMR7216 AAK7544 AAM7004 ANB7114 Not used Not used Not used Not used Not used A-207R SDXJ AWX7115 AWX7119 Not used Not used REK1030 Not used Not used ATS7189 ANC7644 AEC7034 AMR7216 AAK7544 AAM7004 ANB7114 AKX-507 REK1025 Not used Not used Not used Remarks MVXJ AWX7113 AWX7117 Not used Not used Not used REK1023 ATS7190 Not used ANC7639 Not used Not used Not used Not used AMB7493 Not used Not used AAK7537 PAM1755 Not used SAMXJ AWX7115 AWX7119 Not used REK1026 Not used Not used Not used ATS7189 ANC7645 AEC7034 AMR7216 AAK7544 AAM7004 ANB7114 AKX-507 REK1025 Not used Not used PRW1499 MYXJ/EW MYXJ/GR AWX7113 AWX7117 Not used Not used Not used REK1023 ATS7190 Not used ANC7639 Not used Not used Not used Not used AMB7493 Not used Not used AAK7537 PAM1755 Not used AWX7113 AWX7117 Not used Not used Not used REK1023 ATS7190 Not used ANC7639 Not used Not used Not used Not used AMB7493 Not used Not used AAK7537 PAM1755 Not used 11 Power Transformer (T1 : AC220-230V) 11 Power Transformer (T1 : AC110V/120-127V/220V/240V) 13 Rear Panel 20 Rubber Spacer NSP 24 29 30 38 42 43 44 45 46 Damping Plate LED Lens T Name Plate Front Panel Voltage Selector (S2) Fuse (FU2, FU3 : 2A) LED Lens A PIONEER Badge Label (Rear Base) 5 1 2 3 4 A-307R, A-207R 3. SCHEMATIC DIAGRAM A 3.1 OVERALL CONNECTION DIAGRAM B HEADPHONE ASSY AWX7114 F FRONT R ASSY AWX7124 B D AF ASSY AWX7119(A-307R) AWX7117(A-207R) C 451 A VOLUME ASSY AWX7118 D 6 1 2 3 4 5 6 7 8 A-307R, A-207R Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". A E FRONT L ASSY AWX7123 B AC POWER CORD C G OPT ASSY AWX7125 AC PRIMARY ASSY AWX7113 (MYXJ/EW, MYXJ/GR, MVXJ) AWX7115 (SDXJ, SAMXJ) MYXJ/EW, MYXJ/GR, MVXJ types MYXJ/EW, MYXJ/GR types SDXJ type SAMXJ type ADG1154 : MYXJ/EW, MYXJ/GR types ADG1156 : MVXJ type ADG1158 : SDXJ type POWER TRANSFORMER ATS7188 : A-307R/MYXJ/EW, MYXJ/GR ( ) ATS7190 : A-207R/MYXJ/EW, MYXJ/GR and NVXJ (13) A-307R ADG7018 : SAMXJ type (15) A-307R/SDXJ, SAMXJ (17) C S2 : AKX-507 VOLTAGE SELECTOR POWER TRANSFORMER ATS7189 D 7 5 6 7 8 1 2 3 4 A-307R, A-207R 3.2 VOLUME AND HEADPHONE ASSEMBLIES A B HEADPHONE ASSY AWX7114 D J551A : AUDIO SIGNAL ROUTE B A VOLUME ASSY A ...