Arcam FMJ P7 Service Manual
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Arcam FMJ P7 Service Manual

7-channel amplifier
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See also: Handbook
P7
Service Manual
Issue 1.0
FMJ P7
7-Channel Amplifi er
ARCAM

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Summary of Contents for Arcam FMJ P7

  • Page 1 Service Manual Issue 1.0 FMJ P7 7-Channel Amplifi er ARCAM...

  • Page 2: Table Of Contents

    Contents List Section Issue Technical specifications Technical specification Rear panel silk screen Amplifier board L924 Circuit description Component overlay Parts list Circuit diagrams Controller board L925 Circuit description Component overlay Parts list Circuit diagrams Transformer specifications L911TX L912TX L920TX L921TX Mechanical General assembly parts list Assembly diagrams...
  • Page 3 Technical Specifications Contents Technical specifications Rear panel silk screen...
  • Page 4 Technical Specifications All measurements are with 230V/50Hz mains power Continuous output power All channels driven, 20Hz – 20Khz, 8 ohm 150W per channel 1.05kW total All channels driven, 20Hz – 20kHz, 4 ohm 230W per channel 1.62kW total One or two channels driven at 1kHz, 8 ohm 160W per channel One or two channels driven at 1kHz, 4 ohm 250W per channel...
  • Page 5 7 RS BACK 6 R SURR 5 RIGHT 4 CENTRE 3 LEFT 2 L SURR 1 LS BACK CAUTION – SHOCK HAZARD, DO NOT OPEN. ACHTUNG – VOR OEFFNEN DES GERAETES NETZSTECKER ZIEHEN. SERIAL No. LABEL 230V ATTENTION – RISQUE DE CHOC, NE PAS ENLEVER. PRECAUCION –...

  • Page 6: Amplifier Board L924

    Amplifier Board L924 Contents Circuit description Component overlay Parts list Circuit diagrams...
  • Page 7 The line ‘NFB’ provides for a portion of the negative feedback of the amplifier to be taken on the load side of RLY101. The components P7 Amplifier Module that allow for this (R236 thru R239) are not presently fitted, meaning that RLY101 is not included in the feedback loop.
  • Page 8 Transistors TR200, TR201 and TR202 form a PNP Wilson current mirror. Likewise TR205, TR207 and TR206 form an IC200B forms the DC integrating servo. Its purpose is to remove NPN Wilson current mirror. The outputs of these two current residual DC errors due to slight device mismatch and component mirrors are connected together via the bias network around tolerances.
  • Page 10 L924 Amplifier Module Parts List Issue 1.1 Designator Part Description BR300 3BGBU8D Diode Bridge Rectifier GBU8D Plastic Package 8A 200V BR301 3BGBU8D Diode Bridge Rectifier GBU8D Plastic Package 8A 200V C103 2C410 Capacitor SM 1206 X7R Ceramic 50V 10% 100N C104 2C210 Capacitor SM 1206 NPO Ceramic 50V 5% 1N0...
  • Page 11 L924 Amplifier Module Parts List Issue 1.1 Designator Part Description R211 1A327 Resistor 1206 Surface Mount 0.25W 1% 27K R212 1A327 Resistor 1206 Surface Mount 0.25W 1% 27K R213 1A327 Resistor 1206 Surface Mount 0.25W 1% 27K R214 1A047 Resistor 1206 Surface Mount 0.25W 1% 47R R216 1A047 Resistor 1206 Surface Mount 0.25W 1% 47R...
  • Page 12 L924 Amplifier Module Parts List Issue 1.1 Designator Part Description R339 1A133 Resistor 1206 Surface Mount 0.25W 1% 330R R340 1A310 Resistor 1206 Surface Mount 0.25W 1% 10K R341 1A310 Resistor 1206 Surface Mount 0.25W 1% 10K R342 1A412 Resistor 1206 Surface Mount 0.25W 1% 120K R343 1A410 Resistor 1206 Surface Mount 0.25W 1% 100K...
  • Page 13 To microprocessor PCB NB: Nets +24V_DIG and 0V_DIG are isolated from amplifier circuit +24V DIG SK104 +24V_DIG 10WAY-H-0.1-F TP102 Microprocessor GND TP103 0V_DIG Microprocessor +24V MUTE TP104 C103 NB: Signals THERMPROT, VIPROT, MUTE not used D101 OUT RLY TP105 100N SM DCPROT and FAULT are open Output relay control BAS16W SM...
  • Page 14 +55V R219 220R MF R214 D200 R216 R210 R211 47R SM BAS16W SM 47R SM 27K SM 27K SM C208 PNP current mirror 100N X7R 1812 500V TR200 TR201 FMMT597 FMMT597 C203 DZ200 100U EL 15V 350MW SM TR202 TR PNP 2SA1740 C205 R221 0V_HF...
  • Page 15 +55V IC300C OPTO-PC3Q66-QUAD-SM FAULT IC300B OPTO-PC3Q66-QUAD-SM IC300A TH300 IC300D PTH 110DEG SM D308 VIPROT THERM 22V 350MW SM R304 270R SM OPTO-PC3Q66-QUAD-SM OPTO-PC3Q66-QUAD-SM C300 100N SM D301 R321 + C301 15V 350MW SM R343 R303 0V_DIG 22K SM 0V_DIG 0V_DIG 100K SM 22K SM 100U EL...

  • Page 16: Controller Board L925

    Controller Board L925 Contents Circuit description Component overlay Parts list Circuit diagrams...
  • Page 17 power relays ensures that relay RLY101 never switches P7 Controller Circuit Description high voltages and its contacts remain clean. The Amp controller PCB Panel consists of 6 PCBs. Voltage selection for 115/230V operation Controller PCB Display PCB The control PCB provides a means of configuring the unit Connector PCB for 115V or 230V operation.
  • Page 18 that the PWM_OUT signal duty cycle can move the output pulled to 5V through R131. In the event of 1 (or both) of the amplifier over the required range. C104, C113 transformer trips going open circuit then line provide suppression for EMC and C112 provides amplifier TX_OVTEMP goes high and the microprocessor is then loop compensation.
  • Page 19 it can be indicated on the front panel display) each module that is averaged to 2.5V by the filter R114, C110. The also provides an address line. A fault occurring on a voltage is then fed to the window comparator formed particular module will cause both the fault line to be low around IC104.
  • Page 21 L925 Controller Board Parts List Issue 1.2 Designator Part Description C100 2N547 Capacitor Radial Electrolytic Dia 5mm Pitch 5mm 4U7 50V C101 2N833A Capacitor Radial Electrolytic Dia 16mm Pitch 7.5mm 3300UF 35V C102 2N810 Capacitor Radial Electrolytic Dia 10mm Pitch 5mm 1000UF 25V C103 2K410 Capacitor Boxed Polyester 5mm Pitch 10% 63V 100N...
  • Page 22 L925 Controller Board Parts List Issue 1.2 Designator Part Description F105-2 F022 FUSEHOLDER COVER TO SUIT 8S004 F106 C12406 FUSE BUSSMANN S504 T4A 20MM F106-1 8S004 FUSEHOLDER 20MM PCB F106-2 F022 FUSEHOLDER COVER TO SUIT 8S004 HS100 F007 HEATSINK TO-220 23 degC/W CLIP ON HS101 F007 HEATSINK TO-220 23 degC/W CLIP ON...
  • Page 23 L925 Controller Board Parts List Issue 1.2 Designator Part Description R135 1H247 Resistor Metal Film 0.25W 1% 4K7 R136 1H247 Resistor Metal Film 0.25W 1% 4K7 R137 1H410 Resistor Metal Film 0.25W 1% 100K R200 1H210 Resistor Metal Film 0.25W 1% 1K0 R201 1H222 Resistor Metal Film 0.25W 1% 2K2...
  • Page 24 Control PCB Interface PCB Main Switch and LED Display L925CT1_1.2.SCH L925CT2_1.2.SCH L925CT3_1.2.sch DRAWING TITLE P7 Amp Controller CHANGED R200 VALUE. CORRECTED SK301 & SK302 TO 8K2402 Filename: L925CT0_1.2.Sch 02_E061 20/03/02 23425 JP100 ADDED ON SK112 PIS 1 & 2 , F102 PART CORRECTED TO 315mA Notes: 02_E054 7/03/02...
  • Page 25 FIX100 F X101 FIX102 FIX103 FIX NG HOLE 3.2 FIX NG HOLE 3.5 F XING HOLE 3.5 F XING HOLE 3.2 R103 GND1 100K 2W CF FIX10 F X105 F XING HOLE 3.5 F XING HOLE 3.5 D100 1N 003 7K MF C105 TP108...
  • Page 26 +22VD SW2 PL200 ARELAY1* RELAY1 TP200 ASIG_PRES* AFLT_TEMP* AFLT_VI* FIX202 FIX200 FIX203 FIX204 FIX205 FIX206 FIX207 FIX201 AFLT_DC* FIXING HOLE 3.5 FIXING HOLE 3.2 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.2 AFAULT1 CON 10W 0.1 HDR CHASSIS...
  • Page 27 SK301 SW300A MAINS_SW A1007 8K2402 SW300B MAINS_SW A1007 BRED1 RED1 TP300 BRED2 RED2 TP301 BRED3 R300 R301 R302 R303 R304 R305 R306 R307 R308 R309 R310 R311 R312 R313 RED3 TP302 BRED4 220R MF 220R MF 220R MF 220R MF 220R MF 220R MF 220R MF...

  • Page 28: Transformer Specifications

    Transformer Specifications Contents L911TX Power amp 115/230VAC L912TX Aux 115/230VAC L920TX Power amp 100VAC L921TX Aux 100VAC...
  • Page 29 Transformer Specification For 115/230V P7 transformer Connector Latch SECONDARY 145mm dia max Arcam Part Number L911TX Material Safety Specification 1. Winding Wire to be Grade 2 (130C rating) to BS 60317-4 1995 2. Mylar Polyester Insulator 130C Rated 6 way 2 way 3.
  • Page 30 Transformer Specification For 115/230V P7 Auxilliary Transformer Arcam Part Number L912TX PRIMARY SECONDARY TEST CIRCUIT Amthyst Part Number AD3595T VOUT 1 6 WAY CONN PIN 3 BROWN 4 WAY CONN PIN 3 Material Safety Specification 115V ac 1N4003 1N4003 1. Winding Wire to be Grade 2 (130C rating) to BS 60317-4 1995...
  • Page 31 Transformer Specification For 100V P7 Amplifier Connector Latch SECONDARY 145mm dia max Arcam Part Number L920TX Material Safety Specification 1. Winding Wire to be Grade 2 (130C rating) to BS 60317-4 1995 2. Mylar Polyester Insulator 130C Rated 6 way 2 way 3.
  • Page 32 Transformer Specification For 100V (JAPAN) P7 Auxilliary Transformer Arcam Part Number L921TX PRIMARY SECONDARY TEST CIRCUIT Material Safety Specification VOUT 1 6 WAY CONN PIN 3 BROWN 4 WAY CONN PIN 3 1. Winding Wire to be Grade 2 (130C rating) to BS 60317-4 1995...

  • Page 33: Mechanical

    Mechanical Assembly Contents General assembly parts list Assembly diagrams Front panel TX tray Rear panel Chassis...
  • Page 34 P7 General Assembly Parts List – issue 4 ITEM 240V 115V 100V SILVER BLACK DESCRIPTION WHERE USED E065AY E065AYB FASCIA ASSEMBLY FITS TO FRONT OF CHASSIS E844CP E844CPB COVER E934MC E934MCB POWER BUTTON FITS ONTO POWER SWITCH HA4V06S SCREW MACHINE M4x6mm PAN TORX STAINLESS-STEEL NICKEL-PLATED COVER TO CHASSIS HA4V06B...
  • Page 35 P7 General Assembly Parts List – issue 4 ITEM 240V 115V 100V SILVER BLACK DESCRIPTION WHERE USED ZINC-PLATE CLEAR HA4D06A SCREW MACHINE M4x6mm PAN POZI STEEL FAN BRACKET (3) CHASSIS SAFETY EARTH (1) AND NICKEL-PLATED TRANSFORMER EARTH SCREEN WIRE (1) HA5L12B SCREW MACHINE M5x12mm HEX STEEL ZINC- MODULE TO TRAY...
  • Page 40 ARCAM All parts can be ordered via spares@arcam.co.uk Pembroke Ave, Waterbeach, Cambridge, CB5 9PB, ENGLAND TEL: +44(0) 1223 203 203 FAX: +44(0) 1223 863 384...

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