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WARWICK SERVICE MANUAL

BASS AMPLIFIERS WA600

F a m i l y O w n e d • S o l a r P o w e r e d • S u s t a i n a b l y M a n u f a c t u r e d i n a G r e e n E n v i r o n m e n t

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Summary of Contents for WA600

Page 1: ...WARWICK SERVICE MANUAL BASS AMPLIFIERS WA600 F a m i l y O w n e d S o l a r P o w e r e d S u s t a i n a b l y M a n u f a c t u r e d i n a G r e e n E n v i r o n m e n t ...

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Page 3: ...p of cable you should hear noise in speaker 2 Take short instrumental cable insert it to the Send and Return jacks on the rear panel Try also to connect guitar to the return input instead of normal inputs in that case only Volume potentiometer works If any of this helps then you should perform preamp test 3 Disassembly amp 4 Perform power supply test 5 Perform power amp 6 Perform preamp test Volum...

Page 4: ...sappearing or you hear any unwanted noises on this movement If it does then preamp needs to be exchange 4 Disassembly amp 5 Perform ribbon cable test 6 Connect all parts back together turn on the amp try to move ribbon cable close to the both endings and listen if sound depends on cable movement 7 Perform all other tests Pay attention during each test if any movement of components connectors elect...

Page 5: ... chassis are holding pre amp with front chassis Preamp board 6 screw are holding metal board with power amp board Inside of the amp Potentiometer knobs and switches nuts removed Chassis without front preamp board Power amp board with metal board Disassembling of amplifier ...

Page 6: ...Power amp with metal board removed Preamp board and backboard Transformer with soft start board Backboard Chassis with transformer soft start board and metal board for power amp FAN ...

Page 7: ...is no voltage at all check with ohmmeter if fuse is ok If new fuse immediately burns after switching on the power then transformer is damaged and need to be exchange Also check if power switch is working properly and if there is good connection between power connector and transformer To do this you have to remove plastic isolation of switch and power connector Also make sure that soft start board ...

Page 8: ...on pictures on the left Voltage values should be 90V between yellow and red point and 90V between green and red point Those values are correct only without any load on the speaker output It can drop to 77V when power amp is fully driven 6 Measure DC voltage on the connector Voltage values should be 15V between red and green AGND point and 15V between yellow and green AGND point Output load should ...

Page 9: ...the amp 5 Connect oscilloscope probe to signal output Make sure that oscilloscope ground is connected with generator ground GND or red GND point 6 Connect power cable turn on the power switch and start to increase generator voltage You should see increasing clean sine wave on the scope While input voltage reaches 4Vpp output voltage should reach 140Vpp At this point increasing signal input will no...

Page 10: ...pp When you switch now to the active input voltage on the output should drop to approximately 1 25Vpp 8 Try treble bass and gain potentiometers if movement of each of them is chan ging output signal on the scope Next observe if wave is changing while you turn compressor on and also if compres sor potentiometer is working properly Next try if mute switch is working pro perly by turning output signa...

Page 11: ...can damage temperature sensor use only hot air 4 If FAN doesn t work then disconnect connector marked on yellow and measu re DC voltage on connector It should increase from 7V sensor is cold to 23V when sensor is heated If that s correct then you should exchange FAN If there no voltage on connector or voltage values are different than 7V and 23V then power amp with power supply board is dama ged a...

Page 12: ...ormer Power socket Power switch Voltage selector Speaker connector FAN 330 80 1 6 double side board FR 4 blue oil white word 1oZ A01 256 248 1 6MM FR4 2OZ with Heat sink single side 173 112 1 6MM CEM 1 2OZ J15 blue oil white word 5P PH 2 54mm L 180MM UL1533 26 1C S UL1007 24 3PCS flat cable 3PIN 2 54mm 70mm 26 ROHS 20Pin gray flat cablePH 1 27mm 28AWG Mains input 115V 230V 3pins 1 4 Speakon DC FAN...

Page 13: ...Technical data 1 Power amp and power supply TITEL WA 600 SCH PRODUCT NAME WA 600 Amp DESIGNER DX DATE 2012 02 09 PCB P N 053 6051010010R DWG NO OY 0051 33 ES SIZE SHEET ...

Page 14: ...2 Block schematic TITEL WA 600 SCH PRODUCT NAME WA 600 DESIGNER DX DATE 2012 02 09 PCB P N 053 6051010010R DWG NO O Y 0051 51EW A SIZE SHEET ...

Page 15: ... 100uF C1 15V 15V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 C N4 PRE A P SGND 8 1 3 2 4 IC13A NE5532N 10R R1 1K R2 100K R3 22 F C4 100R R4 100k R18 SGND 7 5 6 8 4 IC13B NE5532N 22 F C9 100K R8 1K R7 100R R9 100uF C11 100k R16 SGND 22 F C18 100K R14 1K R13 100R R15 7 5 6 8 4 IC14B NE5532N SGND 1nF C3 SGND 22 F C14 1K R21 1K R33 1K R34 1k R24 PGND 15V 15V SGND SEND RE RN PRE P SEND SEND P P...

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Page 18: ...55 9999 E Mail info warwick de Branches SHANGHAI P R China DÜBENDORF Switzerland PRAHA Czech SlovakiaRepublic WARSAW Poland HAILSHAM GreatBritain NEW YORK USA www warwick de www warwickbass com www framus de www framus com www framus vintage de www warwick distribution de www warwick de forum F a m i l y O w n e d S o l a r P o w e r e d S u s t a i n a b l y M a n u f a c t u r e d i n a G r e e ...

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