powersoft X4 User manual

Service Manual
Keep this manual
for future reference
X4 Amplifier Platform
©2018 Powersoft
powersoft_X4_servman_en_v2.5

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INDEX
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X4 | SERVICE MANUAL
X4 Service Manual Structure
1Safety Information
2Index
3Equipment Requirement
4Power Cord Congurations
5Service Precautions
5.1 Note on Soldering
5.2 Note on Replacing Parts
5. 2.1 Explaination signicato label Amplier Serial Number
5.2.2 Mac Address
6Description of The Amplifer
6.1 External
6.1.1 Front Panel (LED Congurations and Meanings)
6.1. 2 Rear Panel
6.2 Internal
6.2.1 Main Module Locations
6.2.2 PSU Components
7Disassembling Instruction
7.1 Removing the Front Panel
7.2 Removing the Amplier Cover
7.3 Removing the Wi-Fi Module
7.4 Removing the Audio Modules
7.5 Removing the Fans
7.6 Removing the Varistors
7.7 Removing the EMI Filter
7.8 Removing the Power Supply
7.9 Removing the Slot Ethernet Board
7.10 Removing the Dante Board
7.11 Removing the DIGI and ADLINK
7.11.1 DIGI Board with Old Memory Chip
7.11. 2 DIGI Board with New Memory Chip
7.12 Replacing the Flat Cable
7.13 SD Card Removal
7.14 Removing the Rear Panel
7.14.1 Old Version
7.14. 2 New Version
8Symptoms & Faults Visible from Front LED Conguration
8.1 Audio Modules
8.2 Power Supply Module
8.3 Auxiliary Voltage
8.4 Fan Failure
8.5 Firmware Issue
9Power Spply Verication Procedure
10 Amp Module Verication
11 Dante Controller & Updater
11.1 Brief Intro about Dante
11. 2 Installing Dante Controller
11. 3 Updating Firmware - Initialize Dante Board
11.4 About Failsafe
11.4.1 What is Failsafe Mode?
11.4.2 How do I tell if a device is in Failsafe Mode?
11.4.3 How do I Recover from Failsafe Mode?
11. 5 Using Failsafe Recovery
11.6 Dante Dynamic IP Restore
12 Updating of the Firmware using ArmoniaPlus v1.2
13 Update the SD Recovery Card Rev. 1
14 Recovery SD Card Procedure
14.1 Setting the Serial Number and MAC Address
15 Extracting the Log Files via Pen Drive

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X4 | SERVICE MANUAL
16 Extracting the Log Files via SD Card
17 Soft Reset - Resetting the IP Address
18 Testing the Amplier via ArmoniaPlus
19 Final Checklist
20 Restoring the Amplier to its Factory Setting
21 Replacement Parts
Appendix A: X Series Front Panel
Important Safety Addendum
X4 Service Analysis & Troubleshooting Structure
A. Analysis and Solution
1Digi / ADLink Hardware To analysis HW problem on digi/adlink, rst of all unmount it following the instruction on Chap. 7.11 of this guide.
After the ADLink is unmounted, plesase check the component u29 and u27 etc etc….
2Digi / ADLink Firmware To analysis FW issue, connect Amplier to ArmoniaPlus. Update FW if required.
3Flat Cables Refer to Chap 7.11 & 7.12, remove & replace if required.
4Amp Module Verify as in Chap. 10, refer to Chap. 7.4, remove & replace if required.
5Rear Board Refer to Chap. 7.14, remove & replace if required.
6Preset Perform the PAM as refer in Chap 20.
7 Power Supply Unit Verify as in Chap. 9, refer to Chap. 7.6, 7.7 & 7.8, remove & replace if required.
8 Fans Refer to Chap. 7.5, remove & replace if required.
9Mech Damage / Loose
Components Inside
Refer to Chap. 7.1 & 7.2, remove Amplier Cover to inspect interior & tighten back if possible.
10 Opened Chassis Refer to Chap. 7.1 & 7.2 to open Chassis.
11 Temperature Sensor Verify the Result by checking with ArmoniaPlus.
12 Wi-Fi Frequency Verify the Result by checking with ArmoniaPlus or Refer to Appendix A
13 Wi-Fi Board Refer to Chap. 7.3, remove & replace if required.
14 Slot Board Refer to Chap. 7.9, remove & replace if required.
15 Digi Board Refer to Chap. 7.11, 7.11.1 & 7.11.2, remove & replace if required.
16 IP Address Refer to Chap. 17, connect Amplier to ArmoniaPlus to verify as refer to Chap. 18.
17 Dante Board Refer to Chap. 7.10, remove & replace if required. Perform FW Update / Initialize / Restore Dynamic IP as in CHap 11.
18 Failsafe Mode Refer to Chap. 11.4 for Verifying & Chap. 11.5 for Recovery.
19 Firmware Update Refer to Chap. 12 & carry out FW Update.
20 Static IP Refer to Chap. 17, connect Amplier to ArmoniaPlus to verify as refer to Chap. 18.

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X4 | SERVICE MANUAL
B. Troubleshooting
SYMPTOM AREA SYMPTOM POSSIBLE CAUSES CHECK ACTIONS
1.1 AUDIO No Audio Digi / ADLink HW Check Components Swap Golden Sample
Digi / ADLink FW Update FW (or Recovery Card)
Flat Cables Swap Golden Sample
AMP Module Check AMP Module Swap CH 1-2 / CH 3-4
Rear Board Visual Inspection / Check R and L
1.2 Noise Digi / ADLink HW Check Components Swap Golden Sample
Digi / ADLink FW Update FW (or Recovery Card)
1.3 Protection Digi / ADLink HW Check Components Swap Golden Sample
Digi / ADLink FW Update FW (or Recovery Card)
Preset Reset on ArmoniaPlus
2.1 POWER No Power PSU Varistors Unplug any connections between PSU and other components (Digi / ADLink,
AMP etc.)
EMI Filter Check PFC, fuses, varistors, Vrail
Fuses Connect to external power supply check LED
LED If everything ok, check ADLink
2.2 Reboot Digi / ADLink HW Check Components Swap Golden Sample
Digi / ADLink FW Update FW (or Recovery Card)
3.1 FAN No Fan Fan Check Voltage
External Supply
3.2 Noisy Fan Mech Damage / Loose
Components Inside
Visual Inspection
Opened Chasis Close
3.3 Abnormal
Behaviour
Digi / ADLink HW Check Components Swap Golden Sample
Digi / ADLink FW Update FW (or Recovery Card)
Temperature Sensor Read Value By ArmoniaPlus
4.1 CONNECTION No Wi-Fi Wi-Fi Frequency Read Value By ArmoniaPlus
Wi-Fi Board Swap Golden Sample
4.2 No Dante Slot Board Swap Golden Sample
Dante Board Dante Controller Swap Golden Sample
4.3 No Armonia Slot Board Swap Golden Sample
Digi Board Swap Golden Sample
IP Address Reset IP from Front Panel
5.1 DANTE NOT
WORKING
Failsafe Mode Dante Board Dante Controller
5.2 Wrong Dante
Firmware Update
Dante Board Dante Controller / FW Updater
5.3 Static IP Address Dante Board Dante Controller
6.1 FIRMWARE Firmware Update Digi / ADLink FW Update FW (or Recovery Card)
Slot Board Swap Golden Sample
Note: Golden Sample refer to Boards Provided to Service Centre for Tesng Purposes

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 X4 power amplier.
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
identication. At the end of this guide you can nd 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 amplier.
This documentation contains proprietary information which is the
sole property of Powersoft S.p.A.
These documents are condential 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.
X4 | SERVICE MANUAL
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
INDEX
6Description of the Amplier 8
7Disassembly Instruction 13
7.1 Removing the Front Panel 13
7.2 Removing the Amplier Cover 13
7.3 Removing the Wi-Fi Module 13
7.4 Removing the Audio Modules 14
7.5 Removing the Fans 14
7.6 Removing the Varistors 15
7.7 Removing the EMI Filter 15
7.8 Removing the Power Supply 16
7.9 Removing the Slot Ethernet Board 17
7.10 Removing Dante Board 17
7.11 Removing the DIGI and ADLINK 17
7.12 Replacing the Flat Cable 19
7.13 SD Card Removal 20
7.14 Removing the Rear Panel 21
8Symptoms & Faults Visible from Front LED Conguration 22
8.1 AudioModules 22
8.2 Power Supply Module 22
8.3 Auxiliary Voltage 23
8.4 Fan Failure 24
8.5 Firmware Issue 25
9Power Spply Verication Procedure 26
10 Amp Modules Verication 28
11 Dante Controller & Updater 29
12 Updating of the Firmware using ArmoniaPlus v1.2 37
13 Update the SD Recovery Card Rev. 1 38
14 Recovery SD Card Procedure 40
14.1 Setting the Serial Number and MAC Address 40
15 Extracting the Log Files via Pen Drive 42
16 Extracting the Log Files via SD Card 42
17 Soft Reset - Resetting the IP Address 42
18 Testing the Amplier via ArmoniaPlus 43
19 Final Checklist 45
20 Restoring the Amplier to its Factory Settings
(Copying the PAM les from a Virtual Machine)
46
21 Replacement Parts 47
22 Location to Paste the Anti-Tamper Label after Repaired 48
Appendix A: X Series Front Panel 54
Index:
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
Tools:
T10 Torx Screwdriver
T20 Torx Screwdriver
M5 Socketed Hex Screwdriver
M7 Socketed Hex Screwdriver
6mm Hex Screwdriver
Long Nose Pliers
Any evidence of tampering by unathorized personnel results
in immediate termination of the warranty.

INDEX
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X4 | SERVICE MANUAL
INDEX
5. Service Precautions
5.1 Notes on SOLDERING
For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specications for the use with lead-free solders for repairs accompanied
by reworking of soldering.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
5.2 Note on REPLACING PARTS
About the AMP Module
The amplier module of this unit is able to correspond to repairing in the component manufacturer (Powersoft Company).
And it holds charge-free warranty period for 16 months after production.
5.2.1 Serial Number Label
The Serial Label is pasted also in the amplier module itself, and makes clear the production year and month.
The details of the Serial Label is as follows.
Serial Number and Period of Production are displayed in the Serial Number.
5.2.2 Mac Address Label
Number provided by POWERSOFT
Positioned on the rear panel and on internal PCB.
4. Power Cord Configurations
L
N
PE
LNPE
L1
L2
L3
L3 L2 L1
N
N
PE
PE
L1
L2
PE
L1L2PE
Three-Phase Single-Phase Two-Phase
THE CONNECTOR AND ITS WIRING ARE COMPATIBLE THROUGHOUT THE WHOLE X SERIES PRODUCT LINE (X4-X8)

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X4 | SERVICE MANUAL
6. Part Description
6.1 External
Amplier Front
Amplier Rear
6.1.1 LED Configurations and Meanings
AMP OFF: All LEDs are off (GREY)
FW Version 1.8.7.16 RING LED
CENTRE LED LED STATUSES
SOLID LED is On
BLINKING LED alternates from solid on to solid off
PULSING LED dims from on to off in a fading fashion
AMP ON (Standby): Central LED pulses WHITE
Mono Phase connection: Ring LED lights solid BLUE
Solid Blue Centre LED: Power supply OK
1
Three Phase connection: Ring LED lights solid WHITE
Solid Blue Centre LED: Power supply OK
2

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X4 | SERVICE MANUAL
Solid WHITE Ring LED - CHANNEL: Input signal detected
3
Solid ORANGE Centre Channel LED: Muted Channel
4
Solid RED Ring LED: Input signal Clipping (over 26 dBu).
Solid WHITE Ring LED: Input signal detected (up to 25 dBu).
Dimmed Solid WHITE Ring LED: Input signal detected (from -57 dBu).
Ring LED OFF: Input signal off (-60 dBu).
FAULT CONDITIONS LED CONFIGURATIONS
Solid ON White LED: Amp is connected to Armonía
6
Pulsing WHITE LED: WiFi Network ON or USB port in use
Solid ON White LED: WiFi Network ON and USB port in use
5
Pulsing RED Centre LED + Channel status Ring LED: Channel protection Enabled
7
Possible Causes:
• Out of range Rail Voltage
• AD converter in fault
• Out of range Aux Voltage
• DA converter in fault
• Short circuit protection ON
• Out of range Aux Current
• AES3 reception in faulty

INDEX
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X4 | SERVICE MANUAL
Front LED illuminated buttons
Switch on
As soon as you you connect the amplier to the power grid, the
amplier’s power supply start supplying power to the auxiliary
systems. The border of the central button starts blinking white: the
amplier is in standby mode.
A pressure on the central button will wake up the amplier.
Switch off
Keep pressed the central button for 3 seconds to switch the
amplier off. The amplier platform turns completely off only when
the mains connector is unplugged.
Mute
A short pressure of the central button toggles MUTE/ UNMUTE
to all active channels: any already muted channel remains in its
mute status.
All other circular buttons except the central one toggle the MUTE/
UNMUTE to the specied output channel.
WiFi
Press the leftmost button: the button will light up and the system
will establish a new local WiFi network whose SSID is in the form:
Powersoft-MODELNAME-SERIAL (e.g. Powersoft-X4-70133)
and default password: 0123456789.
Armonía callback
In order to indentify the unit into the Armonía Workspace, push
on the rightmost button. On the other hand, if you click on Un/
Blink from the contextual menu of the amplier into the Armonía
Workspace, all the front LEDs of the amplier will blink for a while.
X4 front panel.
WiFi
on/off switch
Main on/off switch
MUTE ALL
Armonía
callback
USB
port CH3
MUTE
CH4
MUTE
CH1
MUTE
CH2
MUTE
MUTE/UNMUTE ALL
MUTE/UNMUTE CH1

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X4 | SERVICE MANUAL
Pulsing YELLOW Centre LED: Power supply temp. > 70°
8
Pulsing RED Ring LED (10 sec.): AMP Fan is faulty
9
Pulsing RED Centre LED (10 sec.): PSU Fan is faulty
10
Solid ON YELLOW Centre LED: User Limiter - Set by the user
11
Pulsing YELLOW Centre LED: CH Thermal Protection ON (70°)
12
Pulsing YELLOW/RED Centre and Ring LEDs: CH Thermal Protection ON (85°)
13
6.1.2 Rear Panel

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X4 | SERVICE MANUAL
Colour Description
Wi-Fi Module
AMP Module
Power Supply Module
X Front
Slot Ethernet Board
DIGI/ADLINK Boards
EMI Filter
6.2.1 Main Module Locations
Colour Description
AUX CIRCUITS
CLOCK
VARISTORS
CAPACITORS BANK
TRANSFORMERS
6.2.2 PSU Components
INDEX

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X4 | SERVICE MANUAL
7.2 Removing the Amplifier’s Cover
(Fig. 4)
(Fig. 1)
(Fig. 5)
(Fig. 6)
By means of a T20 Torx Screwdriver, remove the 4 screws
highlighted on (Fig. 4)
Remove the front panel by unscrewing the two highlighted
Hex screws with a 6 mm Hex Screwdriver. (Fig. 1)
By means of a T10 Torx Screwdriver, remove the screw
highlighted on (Fig. 6).
By means of a Long Nose Pliers, remove the Plastic Snap
Rivet highlighted on (Fig. 5)
7. Disassembling Instruction
7.1 Removing the Front Panel
By means of a T10 Torx Screwdriver, remove all 3 screws
highlighted on (Fig. 2)
Unplug all four cables portrayed on (Fig. 3).
(Fig. 2)
(Fig. 3)
7.3 Removing the Wi-Fi Module
Locate the Wi-Fi module on the left side of the front panel.
Gently pull the Wi-Fi Module outwards and remove it
from its slot. (Fig. 7)
(Fig. 7)
Remove the lter and soak it in a mild soap and cold water solution, rinse it and let it dry thoroughly.
Front Panel Cover Complete Assembly

14
X4 | SERVICE MANUAL
(Fig. 8)
Proceed by unplugging the at cables by gently pulling
on the connector’s sides.
Unplug the Output Connectors.
Unscrew the Torx Head Screw holding the magnet in
place.
By means on a M7 socketed screwdriver, remove the last
nut holding the module in place.
Push the module as indicated on (Fig. 8), and carefully lift
it, removing it from its original position.
7.4 Removing the Audio Modules
(Fig. 9)
7.5 Replacing the Fans
• Remove the EMI Filter
• Unplug the Fan’s Power Cable from its connector
• By means of a 2.5 Hex Screwdriver remove all 4 Screws
holding the Fan in place.
• Carefully extract the faulty Fan and replace with a new one.
• Unplug the Fan’s Power Cable from its connector
• By means of a 2.5 Hex Screwdriver remove all 4 Screws
holding the Fan in place.
• Carefully extract the faulty Fan and replace with a new one.
FAN PWS:
FAN AMPS:
IMPORTANT:
BOTH FANS MUST BE MOUNTED WITH THE LABEL
FACING OUTWARDS!!!
INDEX
NOTE!
If found any fans in the old type of Fan Brackets, please
order the KIT FANS X4 SERIES REPLACEMENT to
replace the x2 Fans & change the x2 Brackets to the type
on the right.

INDEX
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X4 | SERVICE MANUAL
(Fig. 10)
7.6 Removing the Varistors
In order to replace the Varistors, remove the two screws
highlighted on (Fig 10), and lift the varistor bank from its
original position.
(Fig. 11)
(Fig. 13)
(Fig. 12)
By means of a T10 Torx Screwdriver, unscrew the 2
screws highlighted on (Fig. 11)
Proceed by removing the magnet by means of a Phillips
Head screwdriver highlighted on (Fig. 12)
Lastly, by means of a M7 socketed screwdriver,remove
the nut bonding the earth to the chassis.
Carefully lift the EMI Filter Module by fulling it upwards,
whilst lightly rocking it side to side in order to release the
connector that becomes visible once the Varistors have
been removed.
In order to replace the EMI Filter Module’s fuses, unscrew
the ve Phillips head screws highlighted in the picture.
Subsequently, unscrew the 3 screws marked in the
picture and extract the board from its casing.
Check the viability of the fuses with a multi-meter.
Replace the blown fuses with same rated ones if needed,
by de-soldering their casings from the board. (Fig. 13)
7.7 Removing the EMI Filter

16
X4 | SERVICE MANUAL
(Fig. 14)
(Fig. 15)
(Fig. 16)
Remove the EMI Filter.
Unscrew the 4 Phillips Head Screws highlighted on (Fig.
14).
Unplug the Fan’s cables and the Flat cables.
By means of an M7 Socketed Screwdriver, remove the
nut holding the Power Supply in place. (Fig. 15)
Gently lift and remove the Power Supply from its original
position, avoiding any damage to the connectors
portrayed on (Fig. 16).
7.8 Removing the Power Supply
INDEX

INDEX
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X4 | SERVICE MANUAL
7.9 Removing the Slot Ethernet Board
By means of a Torx T10 Screwdriver, remove the two
screws highlighted on (Fig. 17).
Gently pull the Slot Ethernet Board outwards, removing
it from its slot.
Removed Dante Board
Removed Slot Ethernet Board with Dante Board Installed
(Fig. 17)
Note: After replacing of Dante Board, DO NOT apply pressure OR Press on the Center of the Dante Board
7.10 Removing the Dante Board
Carefully extract the Slot Ethernet Board
7.11 Removing the DIGI and ADLINK Boards
(Fig. 19)
(Fig. 20)
ADLINK BOARD
Remove the X Front LED Panel. (Fig. 18)
Remove both Audio Modules.
Remove the Slot Ethernet Board
Unplug the Flat Cable portrayed on (Fig. 19).
Unscrew the two Phillips Head Screws Highlighted on
(Fig. 20).
Gently lift and extract the DIGI/ADLINK Boards
NOTE: Extract the battery from the ADLINK Board if replacement is necessary.
(Fig. 18)

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X4 | SERVICE MANUAL
7.11.1 DIGI Board with Old Memory Chip
DIGI BOARD (OLD Chip)
DIGI BOARD (NEW Chip)
7.11.2 DIGI Board with New Memory Chip
Older productions feature the Brooklyn II board.
The CM0 and CM1 dip switches must be on the “ON” Position
This picture shows the default configuration of the jumpers
on the DIGI board. NEVER PRESS THE RED BUTTON!

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X4 | SERVICE MANUAL
Understand the connectors on the ADLINK Board for the
Flat Cables. (Fig. 21)
IMPORTANT:
Never mix up the connection.
Wrong connection will cause serious damage
to the Modules.
(Fig. 21)
Connect the CB000522.01 flat cables to the uppermost connectors
and the CB000524.01 flat cables to the lowermost connectors
Connect the CB000523.01 flat cables to the remaining uppermost connectors
Phillips head screws to be removed in order to semparate the DIGI/ADLINK board assembly.
7.12 Replacing the Flat Cable

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X4 | SERVICE MANUAL
When reassembling, arranged the at cables properly
thru the guide slot on the DIGI/ADLINK boards assembly.
(Fig. 22)
(Fig. 22)
When resetting the PSU Flat cables, follow the sequence
portrayed on the right.
Bend the at cable as indicated and connect it to the
micromatch connector portrayed in the picture.
(Fig. 23)
Locate the SD card, push on it in order to release the
locking mechanism. (Fig. 23)
Repeat the same operation with the remaining at cable.
IMPORTANT:
Never mix up the connection.
Wrong connection will cause serious damage
to the Modules.
7.13 SD Card Removal