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PROEL HP-X series, Service Manual

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PROEL HP-X series Service Manual Download Page 1

 

 

1

Service

 

Manual

 

HPX

 

Series

 

 

Applicable

 

Models:

 

HPX900

 

HPX1200

 

HPX2400

 

HPX2800

 

 

Summary of Contents for HP-X series

Page 1: ...1 Service Manual HPX Series Applicable Models HPX900 HPX1200 HPX2400 HPX2800...

Page 2: ...HPX1200 2400 2800 Malfunction Analysis on Aux Power Supply Board 12 8 HPX1200 2400 2800 Malfunction Analysis on Driving Protection Module Circuit 13 9 HPX1200 Malfunction Analysis on SMPS 14 10 HPX120...

Page 3: ...e parts so please operate follow this manual 1 3 The maintenance person must be ONLY a qualified professional personnel authorized by PROEL 1 4 Don t replace the key devices and adjust the adjustable...

Page 4: ...ARALLEL LOW PASS NOTCH LPN GND INPUT LEVEL INPUT SENSITIVITY STEREO BRIDGE PARALLEL LOW PASS NOTCH LPN GND INPUT LEVEL INPUT SENSITIVITY STEREO BRIDGE PARALLEL LOW PASS NOTCH LPN GND INPUT LEVEL INPUT...

Page 5: ...ch2 7 SMPS POWER 5 TR 10 N Prt Limt Clip S 15V GND B TEMP Prt Limt Clip S 15V GND B TEMP T R 8 2 4V F1 T4A L GND GND CH 1 ou tp ut CH 2 ou tp ut OUTPUT OUTPUT 15V 15V gnd ch 1 inp ut ch 2 inp ut 24 V...

Page 6: ...R1 Clip TR2 T R 8 2 4 V A C F U S E T 1 2 A T 1 5 A L Ch1 GND C h 1 o u t p u t C h 2 o u t p u t output output 1 5 V 1 5 V g n d ch 1 i n p u t ch 2 i n p u t 2 4 V G N D B 24V 24V SIG SIG VCC VCC VC...

Page 7: ...D 1 2 3 I P XLR F XLR M INVERTED OUTPUT OUTPUT OUTPUT STAGE AMP FRONT END ATTENUATOR PREAMP PREAMP CHANNEL 1 CHANNEL 2 BRIDGE PARALLEL STEREO MODE SWITCH ATTENUATOR AMP FRONT END OUTPUT STAGE Protect...

Page 8: ...not pull in and the thermistor NPTR1 is burnt so the amplifier can not start The output stage circuit is burnt therefore the input fuse was destroyed Connecting the jumper of 110V and ACI port the do...

Page 9: ...fier protection happened while switch on Serious distortion of sound No 15V voltage No 24 V output results to all the indicator led on the panel do not shine start up unavailable Repairing Guide 1 Whe...

Page 10: ...10 6 HPX900 Malfunction Analysis on Amplified Part 6 1 Circuit Diagram of Amplifier...

Page 11: ...nd power amplifier goes into protection 2 Overload Short circuit Protection Output short circuit and no protection Start up protection 3 Clip Limit Circuit No clip limit check whether the D7 is on Cli...

Page 12: ...broken When amplifier connects to power supply the Aux Power Supply self activated switch will start to work provide two group standby power supply 5V 16V Among them CN3 5V is for power on off led ora...

Page 13: ...Circuit Function Failure 1 SMPS Control The equipment is unavailable to start Protection function will be activated when in low impedance output Cyclic protection of the switch power Delay start over...

Page 14: ...navailable If start up the equipment high current will results to the burnt out of the DC 300V fuse 3 Fan Speed Control Circuit Fans do not work Fast rotating It is easily to go into over heat protect...

Page 15: ...t if it is normal it means short circuit in amplified part check the amplified circuit otherwise it is the failure of SMPS 3 Power supply protection means all the indicator lights on the panel lit and...

Page 16: ...16 10 HPX1200 Malfunction Analysis on Amplified Part 10 1 Circuit Diagram of Amplifier...

Page 17: ...elayed wave form jitter when in clip limit Volume will not go maximum gradually after start up 4 VHF Over heat Protection and Delay Circuit The protection delay circuit is a collection of VHF short ci...

Page 18: ...18 11 HPX2400 2800 Malfunction Analysis on SMPS 11 1 Circuit Diagram of SMPS...

Page 19: ...d resonant capacitor C106 3 Fan Speed Control Circuit Fans do not work Fast rotating It is easily to go into over heat protection if the fans don t speed up after the module temperature increasing 4 R...

Page 20: ...20 12 HPX2400 2800 Malfunction Analysis on Amplified Part 12 1 Circuit Diagram of Amplifier...

Page 21: ...ative positive bias of the power output transistor is abnormal Small output load caused by false operation of overload 4 Short circuit Protection The protection indicator will not be shined when the a...

Page 22: ...connection of SW2 will cause no bass increase in CH1 or CH2 When increase the bass will cause the sound distortion 3 Sensitivity Switch Circuit Poor connection of SW3 will cause the unbalanced output...

Page 23: ...to minimum through VR1 VR2 when the amplifier start self protection Note Debugging must be done before the protection LED is off you can repeat the debugging in interval 14 Special Notes 14 1 No prio...

Page 24: ...________________________________________________________________________________________________________ _______________________________________________________________________________________________...

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