Yamaha STAGEPAS 300 Service Manual
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Yamaha STAGEPAS 300 Service Manual

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3 7 63 1515 0
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L 13942296513
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011775
20050321-86100
Speaker
CONTENTS
BLOCK DIAGRAM
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u163
CIRCUIT DIAGRAM
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http://www.xiaoyu163.com
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SERVICE MANUAL
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Copyright (c) Yamaha Corporation. All rights reserved. PDF-K9611
STAGEPAS 300
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HAMAMATSU, JAPAN
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'05.04

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  • Page 1 CONTENTS SPECIFICATIONS PANEL LAYOUT DIMENSIONS CIRCUIT BOARD LAYOUT DISASSEMBLY PROCEDURE IC BLOCK DIAGRAM IC CIRCUIT BOARDS INSPECTIONS TROUBLE SHOOTING PARTS LIST BLOCK DIAGRAM u163 CIRCUIT DIAGRAM 011775 20050321-86100 HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF-K9611 ’05.04 http://www.xiaoyu163.com...
  • Page 2 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.

  • Page 3: Specifications

    STAGEPAS 300 3 7 63 1515 0 SPECIFICATIONS General Specifications Maximum Output Power 150 W+150 W/6 Ω @10 % THD at 1 kHz (SPEAKER L/R) 100 W+100 W/6 Ω @1 % THD at 1 kHz (SPEAKER L/R) Frequency Response -3 dB, 0 dB, +1 dB @20 Hz–20 kHz, 1 W Output/6 Ω...
  • Page 4 STAGEPAS 300 3 7 63 1515 0 PANEL LAYOUT q [POWER] switch w [AC IN] jack e [SPEAKER L/R] jacks r [REC OUT L/R] jacks t [MONITOR OUT L(MONO)/R] jacks y Channel input jacks (CH 1 to 4) u Stereo channel input jacks (CH 5/6, 7/8)
  • Page 5 STAGEPAS 300 3 7 63 1515 0 CIRCUIT BOARD LAYOUT L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 6: Disassembly Procedure

    STAGEPAS 300 3 7 63 1515 0 DISASSEMBLY PROCEDURE Front Grille Assembly (Time required: About 1 minute) Remove the four (4) screws marked [120A]. The front grille assembly can then be removed. (Fig.1) Speaker LF (Woofer) (Time required: About 2 minutes) Remove the front grille assembly.
  • Page 7 STAGEPAS 300 3 7 63 1515 0 Speaker HF (Tweeter) Speaker LF (Woofer) Wire LF (Red) Wire LF (Black) Wire HF (Blue) Wire HF (Yellow) LF( )) LF( )) HF( )) HF( )) Photo 1 ( Photo 2 (...
  • Page 8 STAGEPAS 300 3 7 63 1515 0 Mixer Assembly, Cover Mold Assembly (Time required: About 1 minute) Rotate the two (2) straight slots on the fastener heads with a coin driver or minus driver until each straight slot is in alignment with the OPEN position.
  • Page 9 STAGEPAS 300 3 7 63 1515 0 Mixer Assembly (Panel Assembly, Rear Case Assembly) (Time required: About 3 minutes) Remove the mixer assembly. (See procedure 6) Remove the eight (8) screws marked [340], and separate the panel assembly and rear case assembly from the mixer assembly.
  • Page 10 STAGEPAS 300 3 7 63 1515 0 VR Circuit Board (Time required: About 10 minutes) 10-1 Remove the INPUT circuit board. (See procedure 9) 10-2 Remove the six (6) volume knobs (white) marked [130] and the volume knob (red) marked [140] from the panel printing side.
  • Page 11 STAGEPAS 300 3 7 63 1515 0 [100B] Volume knob (S) (White) [120B] Volume knob (S) (Blue) (S)( )) (S)( )) [110A] Volume knob (S) (Green) X 12 (S)( )) [90] Push button X 5 Fig.11 ( FILTER Circuit Board...
  • Page 12 STAGEPAS 300 3 7 63 1515 0 Panel ( Earth wire (green) (brown) ( )) Connector assembly (2P) (blue) Power switch Connector assembly (1P) (brown) 1P ( )) AC inlet Soldering ( Fig.14 ( Panel ( Panel ( Claw (...

  • Page 13: Disassembly Of Rear Case Assembly (Mixer)

    STAGEPAS 300 3 7 63 1515 0 [260] X 7 [270A] POWER [270B] Power amplifier unit B Power amplifier unit A [CN5] [CN6] [CN4] [CN7] Rear case assembly [260]: Bind Head Tapping Screw-B ( ) 3.0X8 CR3 (AAX61980) [270]: Bind Head Tapping Screw-B ( ) 3.0X10 NI-BL (AAX61710)
  • Page 14 STAGEPAS 300 3 7 63 1515 0 Fan (Small) (Time required: About 7 minutes) 15-1 Remove the POWER circuit board. (See procedure 14) 15-2 Remove the shield case together with the fan (small). (Fig.20) 15-3 Remove the four (4) screws marked [110B]. The fan (small) can then be removed from the shield case.

  • Page 15: Ic Block Diagram

    STAGEPAS 300 3 7 63 1515 0 IC BLOCK DIAGRAM M65850FP (AAX62760) Digital Echo FILTER: IC602 CLOCK OP2 IN OP2 OUT LPF2 IN LPF2 OUT LPF2 OSCILLATOR D / A LPF1 IN 1/2 Vcc LPF1 OUT CLOCK CLOCK OP1 OUT...
  • Page 16 STAGEPAS 300 3 7 63 1515 0 CIRCUIT BOARDS FILTER Circuit Board (6469-40) ............... 22 INPUT Circuit Board (6469-40) ..............16 JACK1A Circuit Board (8143-40) ............. 22 JACK1B Circuit Board (8143-40) ............. 22 JACK2 Circuit Board (6469-40) ..............22 NETWORK1 Circuit Board (8143-40) ............
  • Page 17 STAGEPAS 300 3 7 63 1515 0 NETWORK1 Circuit Board Component side Pattern side L 13942296513 407751, 407752 407750 NETWORK2 Circuit Board Component side u163 Component side Pattern side 407751, 407752 407750 http://www.xiaoyu163.com...
  • Page 18 STAGEPAS 300 3 7 63 1515 0 POWER Circuit Board L 13942296513 u163 Component side 407751, 407752 http://www.xiaoyu163.com...
  • Page 19 STAGEPAS 300 3 7 63 1515 0 POWER Circuit Board L 13942296513 u163 Pattern side 407750 http://www.xiaoyu163.com...
  • Page 20 STAGEPAS 300 3 7 63 1515 0 VR Circuit Board L 13942296513 u163 Component side 407747 http://www.xiaoyu163.com...
  • Page 21 STAGEPAS 300 3 7 63 1515 0 VR Circuit Board L 13942296513 Pattern side u163 407744 http://www.xiaoyu163.com...
  • Page 22 STAGEPAS 300 3 7 63 1515 0 FILTER Circuit Board Component side Pattern side 407747 407744 L 13942296513 JACK1A Circuit Board JACK1B Circuit Board JACK2 Circuit Board to NETWORK1-CN10 to NETWORK2-CN8 NETWORK2-CN8 NETWORK1-CN10 Component side Component side Component side...
  • Page 23 STAGEPAS 300 3 7 63 1515 0 INSPECTIONS Test Conditions Measuring Voitage AC 100 V 50/60 Hz (J) AC 120 V 60 Hz (U, C, V) AC 240 V 50 Hz (A) AC 230 V 50 Hz (B, H, W)
  • Page 24 STAGEPAS 300 3 7 63 1515 0 ITEM INPUT CONDITIONS OUTPUT CONDITIONS NOMINAL LIMIT INPUT SENSITIVITY INPUT 1, 2, 3, 4 (Each) SP OUT: L, R -23 dBu -23 dBu±3 dB INPUT=XLR REF: 100 W OUTPUT INPUT-SW=LINE MONITOR OUT: -31 dBu -31 dBu±3 dB...
  • Page 25 STAGEPAS 300 3 7 63 1515 0 ITEM INPUT CONDITIONS OUTPUT CONDITIONS NOMINAL LIMIT CROSSTALK INPUT 1, 2, 3, 4, 5, 6, 7, 8 to SP OUT: 75 dB >70 dB Adjacent INPUT REF: 100 W OUTPUT SIGNAL TO NOISE...
  • Page 26 STAGEPAS 300 3 7 63 1515 0 TROUBLE SHOOTING ∗ Points marked by “ ” to “ ” in the figure of circuit board are the points to be checked as indicated by the same marks in the flowchart on the next page or after.
  • Page 27 STAGEPAS 300 3 7 63 1515 0 • Trouble Shooting (POWER circuit board) START [ No Load ] F1 (Fuse) < Fuse :Primary > OPEN ? CN4: 7 pin < Power Supply :+VB > +VB = +38 V (DC) CN4: 5 pin <...
  • Page 28 STAGEPAS 300 3 7 63 1515 0 < Power LED > Connect the circuit boards(INPUT,FILTER,VR)and two fans. < Signal Path > < FAN > Q822:ON Power LED = ON Remove the Power Amplifier Unit. CN9: 2 pin(4 pin) Power LED = ON...

  • Page 29: Parts List

    http://www.xiaoyu163.com 3 7 63 1515 0 PARTS LIST CONTENTS OVERALL ASSEMBLY ..........2 MIXER ASSEMBLY ........5 REAR CASE ASSEMBLY ......7 L 13942296513 ELECTRICAL PARTS ......... 8-20 Notes : DESTINATION ABBREVIATIONS A : Australian model M : South African model B : British model O : Chinese model C : Canadian model...
  • Page 30 STAGEPAS 300 3 7 63 1515 0 OVERALL ASSEMBLY ∗ Rear cabinet unit Bracket fastner assembly [With mixer] Mixer assembly: See page 5. Rear cabinet assembly Bracket mount assembly 140a SER.No. [Blank] Cover mold assembly L 13942296513 R100 Network assembly...
  • Page 31 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY STAGEPAS 300 Overall Assembly Overall Assembly Overall Assembly Overall Assembly Overall Assembly Overall Assembly Overall Assembly Overall Assembly Overall Assembly Rear Cabinet Assembly...
  • Page 32 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK Mount Bracket Cushion 12X150X2 Bracket Fastner Assembly AAX68660 Fastner Bracket AAX61750 Spring AAX61760 Spacer AAX61770 Flat Head Screw 3.0X8 SC FL NI-BL ACCESSORIES AAX68580 AC Cord...
  • Page 33 STAGEPAS 300 3 7 63 1515 0 MIXER ASSEMBLY 190b 190a P100 P110 P130 P70e P70f P140 P120 220a Rear case assembly: See page 7. L 13942296513 P70d P70a P70c P120 P70b AC-IN connector assembly Panel assembly AC-IN connector assembly...
  • Page 34 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK MIXER ASSEMBLY STAGEPAS 300 Mixer Assembly J,U,C,V Mixer Assembly Mixer Assembly H,B,W Mixer Assembly AAX61790 Panel Assembly J,U,C,K,O,V AAX61800 Panel Assembly A,H,B,W AAX61760 Spacer AAX61840 Hexagonal Screw 3.0X8 NI-BL...
  • Page 35 STAGEPAS 300 3 7 63 1515 0 REAR CASE ASSEMBLY L 13942296513 100a 1) The screws are for transportations only. Remove the screws during assembly. PART NO. DESCRIPTION REMARKS REF NO. QTY RANK REAR CASE ASSEMBLY STAGEPAS 300 Rear Case Assembly...
  • Page 36 STAGEPAS 300 3 7 63 1515 0 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS STAGEPAS 300 AAX62660 Circuit Board FILTER (6469-40) AAX61930 Circuit Board INPUT (6469-40) Circuit Board JACK1A (8143-40) AAX63200 AAX69280 Circuit Board JACK1B...
  • Page 37 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK R136 AAX63820 Carbon Resistor (chip) R140 AAX62790 Carbon Resistor (chip) 1.5K J R141 AAX62800 Carbon Resistor (chip) 47K J R144 Carbon Resistor (chip) 47K J...
  • Page 38 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK C222 AAX62970 Electrolytic Cap. (chip) 47/25V C229 AAX62980 Ceramic Capacitor (chip) 220P 50V J C233 AAX62990 Electrolytic Cap. (chip) 10/35V C301 Electrolytic Cap. (chip) 22/50V...
  • Page 39 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK L202 AAX63090 Coil MMZ1608S102AT T LF L211 AAX63090 Coil MMZ1608S102AT T LF -213 AAX63090 Coil MMZ1608S102AT T LF L301 Coil MMZ1608S102AT T LF AAX63090 L302...
  • Page 40 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK R418 AAX63110 Carbon Resistor (chip) 3.3K J R419 AAX63160 Carbon Resistor (chip) 120K J R420 AAX63160 Carbon Resistor (chip) 120K J R504 Carbon Resistor (chip)
  • Page 41 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK Wire Yellow + HF SP-TW 205N Wire Blue - HF SP-TW 110N Circuit Board POWER J,U,C,A,V (8143-40) AAX68670 AAX68690 Circuit Board POWER H,B,K,O,W (8143-40) Bushing...
  • Page 42 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK C999 AAX62730 Ceramic Capacitor (chip) 0.01 50V K AAX42460 Connector Base Post 2P B2B-EH AAX10590 Connector Base Post 2P B2P3-VH AAX42460 Connector Base Post 2P B2B-EH...
  • Page 43 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK Q808 AAX45980 Transistor (chip) 2SC2412K QRS T146 Q809 AAX45980 Transistor (chip) 2SC2412K QRS T146 Q810 Transistor (chip) 2SA1037AK QRS T146 AAX63710 Q811 AAX45980 Transistor (chip)
  • Page 44 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK R868 AAX63820 Carbon Resistor (chip) 56K J R869 AAX62810 Carbon Resistor (chip) 1K J R870 AAX62880 Carbon Resistor (chip) 10K J R871 AAX62880 Carbon Resistor (chip)
  • Page 45 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK C246 AAX62720 Ceramic Capacitor (chip) 47P 50V J C311 AAX63000 Ceramic Capacitor (chip) 100P 50V J C312 AAX63950 Mylar Capacitor 0.039 50V J C313 AAX62720...
  • Page 46 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK C909 AAX63360 Electrolytic Cap. 10/50V C915 AAX63030 Ceramic Capacitor (chip) 4.7/25V C916 AAX63030 Ceramic Capacitor (chip) 4.7/25V C921 AAX63030 Ceramic Capacitor (chip) 4.7/25V -924 AAX63030 Ceramic Capacitor (chip) 4.7/25V...
  • Page 47 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK R226 AAX62780 Carbon Resistor (chip) 33K J R227 AAX62880 Carbon Resistor (chip) 10K J R228 AAX62810 Carbon Resistor (chip) 1K J R229 AAX62880 Carbon Resistor (chip)
  • Page 48 STAGEPAS 300 3 7 63 1515 0 PART NO. DESCRIPTION REMARKS REF NO. RANK R629 AAX62880 Carbon Resistor (chip) 10K J R630 AAX62880 Carbon Resistor (chip) 10K J R632 AAX62910 Carbon Resistor (chip) 15K J R633 AAX63160 Carbon Resistor (chip)
  • Page 49 STAGEPAS 300 STAGEPAS 300 BLOCK DIAGRAM 3 7 6 3 1 5 1 5 0 100W/6ohms JACK1A NETWORK1 JACK1B NETWORK2 JACK2 POWER Power Amplifier Unit Speaker HF FILTER (1/2) (Lch) P12(P6) INPUT (Lch) (TWEETER) CH1: IC102 VR105 IC103 CH1: IC102...
  • Page 50 STAGEPAS 300 CIRCUIT DIAGRAM 1/5 (POWER (1/2) ) 3 7 6 3 1 5 1 5 0 STAGEPAS 300 REGULATOR +15V POWER (1/2) REGULATOR +5V to Page 2/5: A-2 Power Transformer to Page 2/5: A-2 Switching Controller to Page 2/5: B-2...
  • Page 51 STAGEPAS 300 CIRCUIT DIAGRAM 2/5 (JACK1A, JACK1B, JACK2, NETWORK1, NETWORK2, POWER (2/2) ) 3 7 6 3 1 5 1 5 0 STAGEPAS 300 Power Amplifier Unit Power Amplifier Unit 1101 1100 1101 1100 POWER (2/2) from Page 1/5: H-3...
  • Page 52 STAGEPAS 300 CIRCUIT DIAGRAM 3/5 (INPUT) 3 7 6 3 1 5 1 5 0 STAGEPAS 300 INPUT LINE LINE OP AMP NJM2068M CH5/6 NJM2068M OP AMP LINE LINE OP AMP NJM2068M CH7/8 NJM2068M OP AMP 1 3 9 4 2 2 9 6 5 1 3...
  • Page 53 STAGEPAS 300 CIRCUIT DIAGRAM 4/5 (VR) 3 7 6 3 1 5 1 5 0 STAGEPAS 300 OP AMP NJM2068M OP AMP to FILTER-CN28 NJM2068M REVERB LEVEL LEVEL (Page 5/5: E-5) HIGH HIGH CH 5/6 OP AMP NJM2068M OP AMP...
  • Page 54 STAGEPAS 300 CIRCUIT DIAGRAM 5/5 (FILTER) 3 7 6 3 1 5 1 5 0 STAGEPAS 300 FILTER OP AMP NJM2068M NJM2068M OP AMP NJM2068M OP AMP OP AMP NJM2068M DIGITAL ECHO 1 3 9 4 2 2 9 6 5 1 3...

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