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Summary of Contents for Diva A80
- Page 1 DiVA Service Manual Issue 1.0 A80 Amplifier P80 Power Amplifier ARCAM ARCAM Bringing music & movies to life Bringing music & movies to life...
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Page 2: Table Of Contents
L916TX – 115/230VAC toroidal o L917TX – 100VAC toroidal o L907TX – 100VAC frame Exploded view diagram o A80 Mechanical & packing parts list o A80 o P80 Circuit board silk screen o A80 o P80 Circuit board parts list o A80/P80 combined... - Page 3 T2.0A (20mm) FS204 (D.C inline) T2.0A (20mm) The A80 Pre-amp has inputs for Phono, Aux, CD, Tuner, AV, DVD and Tape. All inputs except Phono have a simple The standby Transformer TX200 continuously powers resistor-capacitor 340Khz low pass filter to remove any the digital circuitry (+4.8v(D)) when power is...
- Page 4 Into the power amp stages but from this point we can The transistors found at locations TR400 and configure the unit as a separate Pre amp/Power amp TR401/TR402 form the PNP Wilson mirrors and TR416 by moving the jumpers to the pin 2 and 3 of Con 304 and TR411/TR417 form the Wilson NPN current mirrors, and Con 305, and then remove the jumpers at Con emitter degeneration is provided by R405, R406 (+) and...
- Page 5 Driver bias + ZDT 6758 4AZDT758 operations. Within the A80 integrated amplifier these tasks are performed by the H8 type micro at circuit location IC602, Fig 4a. SAP NY/PY output driver information. within the P80 power amp version the tasks are performed...
- Page 6 IC600 this will allow us to identify the channel If you want to turn the A80 into a separate Pre-Power amp that is “flagging the fault”. (make the Line out become a Pre-amp out and make the...
- Page 7 Fig 9. Major components pin identification. 74HC14 ZDT 758/ZDT 6758 1=Collector 1 2=Collector 1 3=Collector 2 4=Collector 2 5=Emitter 2 6=Base 2 7=Emitter 1 8=Base 1 TLO 72 FMMT 497/597 NJM2114 BC849/BC859 1=Base 2=Emitter 3=Collector DG408DY BAV99 Diode package 1=Anode 2=Cathode 3=Common connection 74HC00D...
- Page 8 Technical Specifications. Continuous Power output Both channels driven 8 ohms 20 Hz – 20 kHz = 65 Watts Single Channel driven 4 ohms 20 Hz – 20 kHz = 80 Watts Distortion 8 ohms at 80% power output 1Khz = 0.008% Input stage specifications.
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Page 9: A80
Rubber O-Rings fitted over main power supply caps LS100 G P PRECISION ANNOTATION R100 GENERAL NOTES Power Amp Left This is the Master Schematic for A80 (L943AY) and P80 (L944AY) PCB L943C4_5.1.SCH +45V_L RLY100A assemblies. Any changes to the schematics in this document must be FIX100 FIX101... - Page 10 -15V(A) TO-220 HS202A DRAWING TITLE 03_E264 09 Sept 03 Remove EMC can from around IEC inlet. 6043PB A80/P80 Power Supplies 23C/W 03_E230 04 Aug 03 None to this sheet. Display snapoff fixing holes reduced to 3.2mm D211 BAS16 Filename: L943C2_5.1.SCH...
- Page 11 0W25 22UF -45V_L DRAWING TITLE * - Default jumper setting on pins 2 & 3; fit jumper A80/P80 - Power Amp Left on pins 1 & 2 to increase bias voltage; Filename: L943C4_5.1.SCH remove jumper to decrease bias voltage 2 3 4 2 5 Notes: A &...
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Page 12: A80
09 Sept 03 None to this sheet. Remove EMC can from around IEC inlet. * - Default jumper setting on pins 2 & 3; fit jumper A80/P80 - Power Amp Right 03_E230 04 Aug 03 None to this sheet. Display snapoff fixing holes reduced to 3.2mm on pins 1 &... - Page 13 330R 330R 330R 0W125 0W125 0W125 0805 0805 0805 DRAWING TITLE LED805 LED804 LED803 A80 & P80 Display Circuitry LED 5mm LED 5mm LED 5mm Filename: L943C8_5.1.SCH ARCAM 0V(D)_DISP Notes: A & R Cambridge Ltd. Pembroke Avenue ECO No. INITIALS...
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Page 14: P80
DRAWING TITLE 03_E264 09 Sept 03 None to this sheet. Remove EMC can from around IEC inlet. A80/P80 Trig, RC5 & P80 Sig Det 03_E230 04 Aug 03 None to this sheet. Display snapoff fixing holes reduced to 3.2mm Filename: L943C7_5.1.SCH... -
Page 15: P80
Q628 0V(D) 0V(D) +4.8V(D) C614 C615 FIX600 IC601C Dia 3.5mm NF ON P80 0V(D) -38V_VFD C618 C605 DRAWING TITLE VIPROT_R A80/P80 Protection & Micros 100V 100V 100N Q639 C613 100V 0805 0805 74HC14 0805 C607 0805 SO-14 100V 100N CON600... - Page 16 8K004 Con Jumper Socket 0.1IN Gold Blue TAPE INPUT TAPE OUTPUT C334 +15V(A) 100V D302 0805 A80 Line Out / A80 PreAmp Out / R318 C322 100K TAPE OUTPUT SELECT TAPE OUTPUT P80 Pre Out Loop P80 PowerAmp In 0V(SIG)
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