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Pioneer GM-520T Service Manual

Bridgeable-two-channel power amplifier
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BRIDGEABLE TWO-CHANNEL POWER AMPLIFIER
GM-520T
For details, refer to "Important Check Points for Good Servicing".
PIONEER CORPORATION
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2005
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
GM-520T/XU/UC
/XU/UC
K-ZZA. AUG. 2005 Printed in Japan
ORDER NO.
CRT3519

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  • Page 1 PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 2005 K-ZZA.
  • Page 2: Safety Information

    Health & Safety Code Section 25249.6 - Proposition 65 - Service Precaution You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual. GM-520T/XU/UC...
  • Page 3 To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual. GM-520T/XU/UC...
  • Page 4: Table Of Contents

    4. PCB CONNECTION DIAGRAM ........................16 4.1 AMP UNIT ..............................16 5. ELECTRICAL PARTS LIST ..........................20 6. ADJUSTMENT ............................... 24 7. GENERAL INFORMATION ..........................25 7.1 DIAGNOSIS ............................. 25 7.1.1 DISASSEMBLY ............................. 25 7.1.2 CONNECTOR FUNCTION DESCRIPTION ..................26 8. OPERATIONS ..............................27 GM-520T/XU/UC...
  • Page 5: Specifications

    1. SPECIFICATIONS GM-520T/XU/UC...
  • Page 6: Exploded Views And Parts List

    • Screw adjacent to mark on the product are used for disassembly. • For the applying amount of lubricants or glue, follow the instructions in this manual. (In the case of no amount instructions,apply as you think it appropriate.) 2.1 PACKING GM-520T/XU/UC...
  • Page 7 Contain Box CHL5587 Screw BYC40P180FTB 9-1 Polyethylene Bag CEG1116 Polyethylene Sheet CNM4338 9-2 Owner's Manual CRD4010 Cord Assy CDE7736 Protector CHP3066 9-3 Card ARY1048 9-4 Caution Card CRP1324 Polyethylene Bag CEG1351 Owner's Manual Part No. Language CRD4010 English, French, Spanish GM-520T/XU/UC...
  • Page 8: Exterior

    2.2 EXTERIOR 13 13 GM-520T/XU/UC...
  • Page 9 CND2470 Buss Bar CND2472 Buss Bar CND2729 Sub Heat Sink CNR1808 Sub Heat Sink CNR1810 Screw PPZ30P100FSN Screw PPZ30P100FTB Terminal (CN850) VNF1084 Screw PPZ30P100FTB > Fuse (FU100, FU101) (30A) CEK1330 Screw BMZ40P200FTB Seal CAN3984 Holder CNV8522 NB40FTB Washer WB40FTB GM-520T/XU/UC...
  • Page 10: Block Diagram And Schematic Diagram

    No differentiation is made between chip capacitors and ← 0.022 R022 discrete capacitors. Guide page -1.7dB ~ Detailed page 0dB or +12dB or +6dB -32.1dB -13.8dBs +18.3dBs -1.8d +18.3dBs +18.5dBs (BB ON INPUT MAX) BASS BOOST GAIN BASS BOOST GAIN GM-520T/XU/UC...
  • Page 11 AMP UNIT 0dB or +12dB or +6dB -1.8dBs -3.1dBs +38.5dBs BASS BOOST DTC643TU DTC643TU BASS BOOST > 8R2K > 8R2K GM-520T/XU/UC...
  • Page 12 GM-520T/XU/UC...
  • Page 13 GM-520T/XU/UC...
  • Page 14 GM-520T/XU/UC...
  • Page 15 GM-520T/XU/UC...
  • Page 16: Pcb Connection Diagram

    2.Viewpoint of PCB diagrams Capacitor Connector SIDE A SIDE B P.C.Board Chip Part 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 GM-520T/XU/UC...
  • Page 17 SIDE A BASS BOOST GAIN LPF/OFF RCA IN SPEAKER LEBEL INPUT 3 2 1 GM-520T/XU/UC...
  • Page 18 AMP UNIT GM-520T/XU/UC...
  • Page 19 SIDE B GM-520T/XU/UC...
  • Page 20: Electrical Parts List

    Q 582 (A,240,163) Transistor 2SC3421 D 556 (B,234,145) Diode MA111 D 557 (B,247,71) Diode MA111 Q 583 (A,276,34) Transistor 2SC4388 D 558 (B,226,121) Diode MA111 Q 584 (A,250,199) Transistor 2SC4388 D 601 (B,247,117) LED FR1112H Q 585 (A,254,34) Transistor 2SC4388 GM-520T/XU/UC...
  • Page 21 R 176 (B,301,180) RS1/16S221J R 586 (A,245,202) RD1/2PM100J R 177 (B,316,178) RS1/16S121J R 587 (A,258,31) RD1/2PM100J R 178 (B,301,182) RS1/16S132J R 588 (A,224,202) RD1/2PM100J R 179 (B,316,182) RS1/16S122J R 589 (B,238,30) RS1/16S221J R 180 (B,301,183) RS1/16S104J R 590 (B,213,205) RS1/16S221J GM-520T/XU/UC...
  • Page 22 C 562 (B,222,127) CCSRCH150J50 R 951 (A,139,197) RD1/4PU103J C 563 (B,228,70) CCSRCH470J50 R 952 (A,112,190) RD1/4PU103J C 564 (B,244,158) CCSRCH470J50 C 565 (A,230,65) CFTNA223J50 R 953 (A,142,198) RD1/2PM470J R 954 (A,118,201) RD1/2PM470J C 566 (A,218,157) CFTNA223J50 R 961 (A,115,109) RD1/2PM220J GM-520T/XU/UC...
  • Page 23 C 972 (A,167,64) CEAT101M16 C 973 (A,151,74) CQHA102J2A C 974 (A,144,72) CEAT221M16 C 975 (A,132,74) CEANP470M16 C 980 (A,144,53) CFTNA103J50 C 991 (A,145,179) CEAT471M50(P45) C 992 (A,120,177) CEAT471M50(P45) C 993 (A,135,173) CQHA102J2A C 994 (A,130,173) CQHA102J2A C 999 (B,248,126) CKSRYB224K16 GM-520T/XU/UC...
  • Page 24: Adjustment

    6. ADJUSTMENT There is no information to be shown in this chapter. GM-520T/XU/UC...
  • Page 25: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (Fig.1) Remove the six screws and then remove the Case. Case Fig.1 Removing the Amp Unit (Fig.2) Remove the fifteen screws and then remove the Amp Unit. Amp Unit Fig.2 GM-520T/XU/UC...
  • Page 26: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION GM-520T/XU/UC...
  • Page 27: Operations

    8. OPERATIONS GM-520T/XU/UC...
  • Page 28 GM-520T/XU/UC...
  • Page 29 GM-520T/XU/UC...

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