Pioneer a 604 rg service manual

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Service
Manual

ORDER NO.
ARP2890
STEREO AMPLIFIER
A-604R-G
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODELIS) AND TYPEIS).
Model _
Type A-GOR A-604R-G Power Requirement Remarks
HE O - AC 220v . 230v AC 240v , *
HEZ - O AC 220v - 230v AC 240V . *
HEWZ O - AC 220v - 230v Ac 240v , *
SD 0 _ AC 110,120V - 127V, 220V,240V With the voltage selector

* :Alter the wiring of me Powersupply block at the primary winding of Poweratransformer referring
to the Line Vokage Selection' described in Service Manual.

0 For the following: A-604RIHEWZ and SD; A-604R-G/HEZ, refer to page 32.

CONTENTS
1. EXPLODED VIEWS, PACKING AND
PARTS LIST ......................................................... 2
2. PCB PARTS LIST ................................................. 5
3. SCHEMATIC AND PCB CONNECTION
DIAGRAMS .......................................................... 9
4. ADJUSTMENTS ................................................ 31
5. FOR A-604R/HEWZ,SD AND A-604R-GIHEZ ..32
6. PANEL FACILITIES ...33
7. SPECIFICATIONS .. ...36

PIONEER ELECTRONIC CORPORATION 471, Meguro 1-Cheme, Meguro-ku, Tokyo 153, Japan

PIONEER ELECTRONICS SERVICE INC. PO Box 1760, Long Beach, CA 90801-1760, U.S.A.

PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087, Keetberqlaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923
© PIONEER ELECTRONIC CORPORATION 1995

O-ZFC MAY. 1995 Printed inJapan

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A-604R, A-604R-G

1. EXPLODED VIEWS, PACKING AND PARTS LIST

NOTES:

' Pans marked by NSP are generally unavailable because they are not in bur Master Spare Parts List.

- The A mark found on some component pans indicates the importance of the safety factor of the part. Therefore, when replacing,
be sure to use parts of identical designation.

- Parts marked by © " are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable.

1.1 PARTS LIST (for A-604R/HEI

Mark No. Description Parts No. Mark No. Descrinlion Parts No.
A 1 03 TRANSISTOR 2SA1302 48 NUT NK70FUC
A 2 Q4 TRANSISTOR 2SA1302 49 NUT NKQOFUC
A 3 Q1 TRANSISTOR 2503281 50 PUSH JOINT (PLS) AMR2537
A 4 02 TRANSISTOR 2503281
A 5 0231 TRANSISTOR 2SC4137 51 REMOCON WINDOW(PLS) AAK2457
52 FUNCTION LENS (PLS) AAK2458
A 6 0232 TRANSISTOR 2504137 53 LED LENS (PLS) AAK2459
A 7 T1 POWER TRANSFORMER ATS1490 54 NAME PLATE (METAL) AAM1058
8 S3 SWITCH A5U1047 55 LED LENS (ABS) PNW2019
9 TERMINAL SCREW AKE-031
A 10 AC SOCKET 3-P AKP-502 56 ROTARY KNOB S (PLS) M81367
57 ROTARY KNOB M AAB1382
A 11 FU1 FUSE(2.5A) AEK-512 58 ROTARY KNOB L M31385
A 12 AC POWER CORD ADG1127 59 PUSH BUTTON A(PLS) M02430
NSP 13 CHASSIS (MET) ANA1214 60 PUSH BUTTONB(PLS) AAD2432
14 REAR PANEL (MET) ANC7240
NSP 15 PANEL STAY (MET) AND1057 61 POWER BUTTON (PLS) AAD2434
62 OPERATING INSTRUCTIONS ARE7049
NSP 16 BOTTOM PLATE (MET) ANF1102 (English, French,German,nanan,
NSP 17 HEATSINK (MET) ANH1435 Dutch. Swedish, Spanish Portuguese)
18 FOOT AMR2414 63 REMO CON (CU-A013) AXD7053
NSP 19 DAMPER ABE1OOB NSP 64 BATTERY (R6P,AA) AEX-010
NSP 20 HEAT SINK HOLDER (MET) ANG1325 65 STYROL PROTECTOR R AHA1599
NSP 21 PCB HOLDER (MET) ANG1826 66 STYROL PROTECTOR L AHA1600
NSP 22 SHIELD PLATE A(MET) ANK1244 67 PACKING CASE AHD7185
NSP 23 SHIELD PLATEB(MET) ANK1245 68 PACKING SHEET AHG1204
24 SPRING (FE) ABH1089 69 BONNET CASE(MET) ANE1418
NSP 25 CUSHION (RUBBER) AEB1074 7O BATTERY COVER AZN2249
26 NYLON BINDER AEC-093 71 PANEL BASE (PLS) AMB2136
27 RIVET AEC-441 72 FRONT PANEL (MET) ANB701B
NSP 28 PCB SUPPORT AEC1006 73 VOLTAGE AMP ASSY AWZ4BQ5
NSP 29 PCB SPACER AECTOM 74 POWER AMP ASSY AWZ7706
NSP 30 PCB SUPPORT AEC1231 75 POWER SW ASSY AWZ7707
31 PCB HOLDER AEC1520 76 POWER TRANS ASSY AWZ7759
32 SHEET AEE1014 NSP 77 DIODE ASSY AWZ7763
NSP 33 BINDER AEF1004 78 REC OUT ASSY AWZ7842
34 SCREW ABA-298 79 HEADPHONE ASSY AWZ4885
35 SCREW (STEEL) ABA1007 80 TONE ASSY AWZ7766
36 SCREW (STEEL) ABA1009 81 INPUT ASSY AWZ7806
37 SCREW (STEEL) ABA1011 82 VOLUME ASSY AWZ7724
38 SCREW (STEEL) ABA1014 83 MPU ASSY AWZ7758
39 SCREW (STEEL) ABA1050 84 LITERATURE BAG AHG-117
40 SCREW ABA1052
41 SCREW (STEEL) A8A1095
42 SCREW (STEEL) ABA1192
43 SCREW (STEEL) ABA1193
44 SCREW (STEEL) ABA1194
45 SCREW BPZ30P120FZK
46 SCREW (STEEL) FBT40P060FZK
47 SCREW FBT4OP1 20FCU