powersoft Duecanali 1604, Service Manual

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INDEX
6
QUATTROCANALI | SERVICE MANUAL
WE RECOMMEND THAT ALL SERVICE OPERATIONS
ARE CARRIED OUT BY A TECHNICIAN IN THE MANNER
DESCRIBED IN THIS GUIDE.
IF NOT EXPLICITLY STATED OTHERWISE, DISCONNECT THE
AMPLIFIER FROM THE MAINS BEFORE OPERATING THE
AMPLIFIER.
WARNING! INTERNAL CAPACITORS BANK COULD BE CHARGED
AND HARMFUL: TAKE CARE OF COMPLETELY DISCHARGE
INTERNAL CAPACITORS BANK BEFORE HANDLING THE DEVICE
This technical document aims to be a support guide in repairing
and low-voltage testing the Duecanali & Quattrocanali Series
Power Amplifiers.
The troubleshooting approach will help you characterize the kind
of fault you incur. A recovery method and the related assembly
outline detail is thoroughly explained for the most common faults.
The components to be replaced are clearly shown to help their
identification. At the end of this guide you can find a detailed
list with the description and the respective Powersoft internal
reference code of the spare parts.
Always use an anti-static wrist band while servicing the amplifier.
This documentation contains proprietary information which is the
sole property of Powersoft S.p.A.
These documents are confidential and reserved and may not be
disclosed, reproduced and shared with third persons or used
without the express written permission from Powersoft S.p.A.
Should the service centre agreement between the two companies
be interrupted these documents must be returned to Powersoft
S.p.A. Italy or proof of their destruction be provided.
Data are subject to change without notice.
For the latest release please refer to the online version available on
www.powersoft-audio.com.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Required Instrumentation Q.ty Example/Comments
Dual stabilized power supply 30 Vdc 5 A 2 APLHA Electronica mod. AL852D or equivalent
Digital Oscilloscope 50 Mhz 1 TEKTRONIK TBS – 1052B-EDU or equivalent
Signal generator 1 Rigol DG1022, Feeltech FY3200S
Variac 1 Toroidal 3 KW (Mono phase)
Dummy load 1500 W 8 Ohm 1 TE CONNECTIVITY / CGS TE1500B10RJ Resistor
Soldering Station 1 WELLER PU81 + WSP80 or equivalent
SMD rework soldering station 1 GORDAK 952 or equivalent
Digital Multimeter 1 FLUKE 179 or equivalent
Pc with at least 1 eth board 1
Index:
4 Service Precautions 7
4.1 Notes on SOLDERING 7
4.2 Notes on REPLACING PARTS 7
4.3 Serial Number Labels 7
4.4 MAC Address Labels 7
5 Description of the Amplifier Parts 8
6 Disassembling Procedure 18
6.1 Removing the Amplifier’s Cover 18
6.2 Disassembling the Fan 19
6.3 Main Board Disassembling 19
6.4 Disassembling the DSP+D / CONTROL Board 23
6.5 Front Board Disassembling 24
6.6 Rear Board Disassembling 24
7 Troubleshooting 26
7.1 Testing the Amplifer with DC Power 26
7.2
Internal LEDs Checks - Power Supply Section -
Normal Operating Conditions
26
7.3
Internal LEDs Checks - Main Board - AMP Section -
Normal Operating Conditions
27
7.4
Internal LEDs Checks - DSP+D Board -
Normal Operating Conditions
29
7.5 Checking the Fan 30
8 Front Panel Fault Indications 31
8.1 Global Faults 31
8.2 Channel Faults 31
8.3 Self Check 32
9 Troubleshooting of LEDs Error Code 33
10 Dante Controller & Updater 37
11 Testing the Unit via ArmonìaPlus 1.3 45
12 4CH / 2CH Platform DSP Rescue Procedure 47
13 Updating of the Firmware using ArmonìaPlus 1.3 50
14 Updating of the Firmware using Dante Controller 51
15
Quattrocanali & Duecanali Series Hardware Composition
Part Number
52
16
“Golden Sample” for Authorize Service Center for
Toubleshooting
52
17 Replacement Parts 53
18 Location to Paste the Anti-Tamper Label after Repaired 58
19 Waveform Chart 59
20 Rescue Procedure for VOID Bias Q2/Q1/D1 61