Bang & Olufsen BeoLab 12-3 User manual

BeoLab 12-3
Type 6232
Service Manual - version 1.0
English
German, French, Italian, Spanish, Dutch, Japanese, Korean and
Simplied Chinese versions are available in the Retail System
This Service Manual must be returned
with the defective parts/back-up suitcase !

CONTENTS
Survey of modules .................................................................... 1.1
How to service .......................................................................... 1.2
Troubleshooting – Fault ow chart ............................................ 2.1
Adjustments ............................................................................. 3.1
Replacement of modules ........................................................... 4.1
Before assembly process – Assembly process –
Final check after repair .............................................................. 5.1
Specication guidelines for service use ...................................... 6.1
Block diagram ........................................................................... 7.1
Wiring diagram ......................................................................... 7.2
Available parts .......................................................................... 8.1
Change log:
Ver. 1.0 ................................................................. Original release

Survey of modules
Modules:
PCB04 SMPS
PCB30 Digital Sound Engine (DSE)
PCB35 ICEpoweramplier(x3)
PCB40 Interconnection
PCB41 V.CON (not present in all versions)
PCB47 LED Indicator
PCB48 NTC(x3)
PCB68 Signal Switch
Speaker units:
Tweeter unit
Midrange unit
Woofer(cosconex2)
Survey of modules 1.1
35
35
35
30
04
68
48
48
40
47
48
41

1.2 How to service
How to service
Strategy
The repair involves replacement of the module(s). The replaced modules must be
returned for repair at the Bang & Olufsen Module Repair department. Error codes
as well as an adequate fault description must be returned with each replaced part.
For this purpose, use the the Exchange Module section in the Retail Order System.
To help the Bang & Olufsen Module Repair department it is very important to
answer the following questions:
1. Which software versions are used in the product?
2. What happens in the actual situation?
3. Error code, the error code contains data that may be used for repairing the
module(s) and must be returned with the defective module(s).
Handling the error code (error log).
a. Make a note of the error code on the Exchange Module section and print it.
b. Use the error code when troubleshooting.
c. Return the error code in the Retail Order System.
d. Before returning the product to the customer, clear the error code.
Preparations before service
Fault explanation and demonstration
Before troubleshooting is initiated, let the customer demonstrate the fault, if
possible.
Important!
After the modules have been replaced and the product is ready to be assembled,
there are some very important steps you must be aware of before starting the
assembling process of the product.
Please refer to page 5.1.
Recommended tools for service
- Static-protectiveeldservice
- White gloves
- Shoe covers
- Soft lint-free cloth for cleaning
Final check after repair
Thenalcheckafterrepairdescribestheactivitiesthatareneededtoensurethe
product will be returned in perfect condition to the customer.
Please refer to ‘Final check after repair’ section on page 5.7.

How to service 1.3
Warnings when handling
Static electricity
Static electricity may damage the product.
Static-protectiveeldservicekit
Astatic-protectiveeldservicekitmustalwaysbeusedwhentheproductis
disassembled or modules are being handled, since the internal electronics are very
sensitive to static electricity.
Follow the instructions in the Service Manual and use the ESD-mat for both old
and new modules.
When mains voltage on the product is required, remove the connection between
the product and the ESD-mat. This is important to avoid getting injured by mains
voltage.
ESD
ESD-Mat
STATIC ELECTRICITY
MAY DESTROY THE
PRODUCT
Waste of Electrical and Electronic Equipment (WEEE)
Electrical and electronic equipment, parts and batteries marked with this symbol
must not be disposed of with normal household wastage; all electrical and
electronic equipment, parts and batteries must be collected and disposed of
separately.
Management methods for controlling pollution caused by Electronic Information Products
Component
name:
Hazardous substance
Pb Hg Cd Cr(VI) PBB PBDE
Aluminum parts × o o o o o
PCBA × o o o o o
Symbols used in the charts:
o Indicates all homogeneous materials’ hazardous substances content are below the
ST/T 11363–2006 MCV limit.
× Indicates that the hazardous substance content contained in any one of the
homogeneousmaterialsofthepartexceededtheMCVlimitsspeciedinthe
standard SJ/T 11363-2006.

1.4

Troubleshooting – Fault ow chart 2.1
Troubleshooting
LED indicator .................................................................................... 2.2
Description of LED errors .................................................................. 2.2
Product Information - Usage data ..................................................... 2.3
Error log ........................................................................................... 2.3
Test - Sound ...................................................................................... 2.4
Speaker unit check ........................................................................... 2.5
NTC module test ............................................................................... 2.5
Fault ow chart
No function, No LED indication ......................................................... 2.6
No power ON, Red LED indication ..................................................... 2.8
LED indicator is orange (constant lit) ................................................ 2.10
LED indicator is ashing orange ...................................................... 2.12
No sound from any speaker, Green LED indication .......................... 2.14
Distorted audio from one or more speaker(s) .................................. 2.16

2.2 Troubleshooting
Troubleshooting
LED indicator
If errors occur during operation, the product will enter an error state. The LED in
the lens tweeter unit indicates the respective error state by changing colour (red/
orange/green), ashing or lit.
Description of LED errors
- Green
Constant lit:
Product is ON and no problems is observed.
Flashing:
Software update is on-going (or ready for software update).
- Orange
Constant lit:
The product is operating but something is on the limit. The product will revert to
normal operation by itself without the need of user interaction.
This could be:
- The product is close to overheating, and have shortly turned off one or more
ampliers shortly.
- Over current protection circuit switched off amplier shortly.
Flashing:
The product is having a fail. Product will not revert to normal operation.
In most cases it is required to contact a retailer. In some cases can be resolved by
disconnecting/connecting the mains.
This could be:
- NTC is defective or disconnected.
- Over current protection is constantly active.
- Over heating of ampliers.
- Serial/type numbers are missing.
- Calibration is not done (to be done by service personnel).
- Calibration failed.
- Red
Constant lit:
Product is turning off (or will turn off in a short time)
Note!
The blinking frequency is telling the severity of the problem. Blinking slowly is used
for smaller problems. Blinking fast is used for bigger issues.
LED

Troubleshooting 2.3
Product Information - Usage data
Usage data is logged in the product which can be very useful information in
troubleshooting situations. Use the ServiceTool to read out the usage data.
Error Log
If an error occurs in the product it is recorded and saved in the error log. The error
log may be helpful in troubleshooting situations. Use the ServiceTool to read out
the error log.
Approach (ServiceTool)
Connect a service PC with ServiceTool. Follow the procedure below:
- Remove the service lid next to the mains inlet.
- Connect the ServiceTool hardware from the service connector on the product to
the service PC as shown:
- Run ServiceTool.
- Be sure that ServiceTool is updated to the latest version. If not, upgrade and restart
ServiceTool.
- Scroll down to BeoLab section.
- Select BeoLab 12-3 and click Launch.
- Click on the PRODUCT tab (if not already shown).
- Click +next to each item (BeoLab-> BeoLab 12-3 to expand the menus.
- Click Info -> Product (the information screen appears).
- Click the Read button and conrm that product data is read out on the screen.
This indicates successful communication between the product and the service PC.
I/O

2.4 Troubleshooting
Test - Sound
It is possible to test each speaker unit/amplier to check the sound quality, and
determine whether the devices are faulty or healthy. For this purpose use ServiceTool
and refer to the test section.
The Test Sound section features a sound generator which allows the user to send
a pure sound directly to the speaker unit. This feature makes troubleshooting or
testing more easy and targeted.
For use simply choose a sound frequency and an output amplier to activate the
test function.
Woofer 1
Woofer 2
Midrange
Tweeter
I/O

Troubleshooting 2.5
Speaker unit check
Measure the impedance of the speaker unit to determine if the fault is caused by a
defective speaker unit.
It is recommended to measure on the terminals on the speaker unit. The speaker
unit must be disconnected from the product.
! Pay special attention to the gasket on the speaker unit.
Speaker unit Nominal value Limits
Tweeter 6.6 ohm 5.6 - 6.7 ohm
Midrange 3.6 ohm 2.6 - 4.7 ohm
Woofers 6.7 ohm 5.6 - 6.7 ohm
If the speaker unit is outside the limits, it is defective and must be replaced.
Under normal conditions it is not necessary to replace the gaskets on the speaker
unit, unless they have been damaged by accident.
NTC module test
Measure the resistance of the NTC module to determine if the fault is caused by a
defective speaker unit or the NTC module.
It is recommended to measure on the terminals on the back of the speaker unit.
The NTC module must be disconnected from the product.
! Pay special attention to the gasket on the speaker unit.
The resistance of the NTC module at 22ºC (72ºF) is approximately 470K ohm (the
NTC resistor must be disconnected from the wire).
If the NTC module is outside the limits, it is defective and must be replaced.
Under normal conditions it is not necessary to replace the gaskets on the speaker
unit, unless they have been damaged by accident.
! The shown speaker is
only an example
! The shown speaker is only an example

Fault symptom:
No function
No LED indication
Possible causes:
Defective PCB04, SMPS
Defective PCB30, DSE
Confirm +5V_Stb at
PCB04, P4 pin 9-10
OK?
No
Disconnect W9
from PCB30, P5.
Confirm +5V_Stb at
PCB04, P4 pin 9-10
OK?
Connect the cable
for ServiceTool to
the service
connector
Does the product
switch on?
Fault in Power Link
connection/source
Check connection
Confirm +3V at
PCB04, P4 pin 8
OK?
Confirm mains
voltage at PCB04,
P1 pin 1-2
OK?
Replace defective
PCB04, SMPS
Fault in cable
connection
Repair/replace
connection
Replace defective
PCB30, DSE
Replace defective
PCB30, DSE
Yes
Confirm:
+12V at PCB04, P4
pin 1
-12V at PCB04, P4
pin 3
OK?
Replace defective
PCB30, DSE
Replace defective
PCB04, SMPS
2.6 Fault ow chart
Fault ow chart
PCB04, P4, pin information - see next page

Fault ow chart 2.7
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
V.CON (1/2)
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
V.CON (2/2)
41
PCB04, P4, pin information
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04

2.8 Fault ow chart
Confirm:
+12V at PCB04, P4
pin 1
-12V at PCB04, P4
pin 3
OK?
Fault symptom:
No power ON
Red LED indication
Possible causes:
Defective PCB04, SMPS
Defective PCB30, DSE
Confirm +5V_Stb at
PCB04, P4 pin 9-10
OK?
Disconnect W9
from PCB30, P5
Confirm +5V_Stb at
PCB04, P4 pin 9-10
OK?
Connect the cable
for ServiceTool to
the service
connector
Does the product
switch on?
Fault in PowerLink
connection/source
Check connection
Confirm +3V at
PCB04, P4 pin 8
OK?
Confirm:
+33V at PCB04, P3
pin 4
-33V at PCB04, P3
pin 2
OK?
Confirm mains
voltage at PCB04,
P1 pin 1-2
OK?
Replace defective
PCB04, SMPS
Fault in cable
connection
Repair/replace
connection
Replace defective
PCB30, DSE
Replace defective
PCB30, DSE
No
Yes
Replace defective
PCB30, DSE
Replace defective
PCB04, SMPS
Disconnect W3
from PCB04, P3
Confirm +33V at
PCB04, P3 pin 4
-33V at PCB04, P3
pin 2
OK?
Replace defective
PCB04, SMPS
Fault in one of the
three PCB35,
ICEpower amplifiers
Disconnect one by
one and replace the
defective module
PCB04, P4, pin information - see next page

Fault ow chart 2.9
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
W.CON1
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
W.CON2
41
PCB04, P4, pin information
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04

2.10 Fault ow chart
Fault symptom:
The product is close to overheating
LED indicator is orange (constant lit)
Possible causes:
Defective PCB35, ICEpower amplifier
Defective PCB48, NTC
Defective PCB30, DSE
Defective speaker unit
Disconnect the
product from the
mains
Disconnect W12
from PCB30, P9.
Confirm 500KΩ* at
W12 pin 1-2, pin
3-4 and pin 5-6
OK?
Measure the
temperature of the
two woofers/
midrange speaker
unit
Seems similar/
normal?
No
Yes
* Approximately 500KΩat 22°C (72°F)
Defective PCB48,
NTC.
Follow W12,
measure/discover
and replace the
defective NTC unit
Replace defective
speaker unit
Use ServiceTool to
calibrate the new
speaker unit
Defective PCB35,
ICEpower amplifier.
Replace and use
ServiceTool to
calibrate the new
module
Reconnect the
product to the
mains and connect
ServiceTool. Read
out the error log.
Any useful
information?
Replace the
suspected module
related to the error
log
Measure the
temperature of the
three amplifier
modules. Seems
similar/normal?
Locate and replace
the overheated
amplifier module
Confirm voltages at
PCB04, P2:
pin 6 = 1V
pin 7 = 0V
pin 8 = 5V
OK?
One or more defective PCB35, ICEpower
amplifier. Disconnect, one at the time, PCB35 P1
to discover the defective module.
Replace and use ServiceTool to calibrate the new
module
Confirm voltages at
each PCB35, P1:
pin 10/11 = 0V
OK?
Defective PCB35,
ICEpower amplifier.
Replace and use
ServiceTool to
calibrate the new
module
Defective PCB30,
Digital Sound
Engine
Locate the overheated speaker unit and measure
the resistance (wires disconnected):
Woofer = 6.5Ω+/-
Midrange = 3.6Ω
Tweeter = 6.5 Ω
OK?
PCB04, P4, pin information - see next page
PCB35, P1, pin information - see next page

Fault ow chart 2.11
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
W.CON1
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
W.CON2
41
PCB04, P4, pin information
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
W.CON1
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
W.CON2
41
PCB35, P1, pin information
P4
P3 P2
14
41
P1
12 1
81
35
P4
P3 P2
1 4
41
P1
12 1
81
35

2.12 Fault ow chart
Fault symptom:
The product is in protection
LED indicator is flashing orange
Possible causes:
Defective PCB35, ICEpower amplifier
Defective PCB48, NTC
Missing or faulty speaker calibration
Missing product ID
No
Yes
Disconnect the
product from the
mains
Disconnect W12
from PCB30, P9.
Confirm 500KΩ* at
W12 pin 1-2, pin
3-4 and pin 5-6
OK?
Measure the
temperature of the
two woofers/
midrange speaker
unit.
Seems similar/
normal ?
* Approximately 500KΩat 22°C (72°F)
Defective PCB48,
NTC.
Follow W12,
measure/discover
and replace the
defective NTC unit
Replace defective
speaker unit.
Use ServiceTool to
calibrate the new
speaker unit
Defective PCB35,
ICEpower amplifier.
Replace and use
ServiceTool to
calibrate the new
module
Locate the overheated speaker unit and measure
the resistance (wires disconnected):
Woofer = 6.5Ω+/-
Midrange = 3.6Ω
Tweeter = 6.5 Ω
OK?
Reconnect the
product to the
mains and connect
ServiceTool. Read
out product ID. Is all
product ID data
OK?
Type in all product
ID data from the
product label
Measure the
temperature of the
three amplifier
modules.
Seems similar/
normal?
Locate and replace
the overheated
amplifier module
Confirm voltages at
PCB04, P2:
pin 6 = 1V
pin 7 = 0V
pin 8 = 5V
OK?
One or more defective PCB35, ICEpower
amplifier. Disconnect, one at the time, PCB35 P1
to discover the defective module.
Replace and use ServiceTool to calibrate the new
module
Confirm voltages at
each PCB35, P1:
pin 10/11 = 0V
OK?
Defective PCB35,
ICEpower amplifier.
Replace and use
ServiceTool to
calibrate the new
module
Defective PCB30,
Digital Sound
Engine
Use ServiceTool to
perform a
calibration of all
amplifiers
OK?
PCB04, P4, pin information - see next page
PCB35, P1, pin information - see next page

Fault ow chart 2.13
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
W.CON1
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
W.CON2
41
PCB04, P4, pin information
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
P3
P2
P4
P7
P1
2
1
1
2
4
1
1
2
11
12
1
2
7
8
04
47
LED
>
>
>
P1
3/3pins
48
SMPS
04
2/2pins
P1
P2
>
>
>
>
<
<
<
><
8/8pins
P4
<
>
>
>
>
>
<
>
>
><
><
><
12/12pins
P1
>
>
>
><
>
>
>
>
>
<
<
><
12/12pins
P4
4/4pins
35
ICEpower amplifier
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P4
4/4pins
W15
W2
30
Digital Sound Engine(DSE)
Signal Switch
68
P1
14/14pins
P1
14/14pins
W10
>
1/1pins
<
<
<
<
<
<
<
>
P5
><
><
><
12/12pins
P6 <
>
>
>
>
>
>
<
<
<
><
11/11pins
P7
<
<
<
<
>
>
>
>
>
>
><
><
12/12pins
W14
W6
W10
W8
W16
W9
<
>
>
<
<
>
>
>
>
<
>
<
>
P8
><
14/14pins
Interconnection
40
>
>
P2
2/2pins
W1
41
W.CON1
P1
>
>
>
>
4/4pins
P2
4/4pins
P3
>
>
2/2pins
P4
4/4pins
>
>
>
>
P5
4/4pins
W5
W4
P2
RJ45
Service
P4
RJ45
PowerLink
P3
RJ45
PowerLink
>
>
P2
2/2pins
P11
>
>
<
3/3pins
P9
><
<
<
<
6/6pins
><
><
W12
W13
48
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
P4
4/4pins
W17
W11
>
>
P2
2/2pins
48
>
>
>
>
>
>
P2
2/2pins
P1
2/2pins
35
ICEpower amplifier
<
<
>
>
>
>
>
>P1
>
>
><
><
12/12pins
>
>
>
>
<
<
<
P2
><
8/8pins
>
>
>
>
P3
4/4pins
>
>
>
>
<
<
<
P2
><
8/8pins
W7
P3 >
>
>
><
4/4pins
W3
>
>
>
>P3
4/4pins
>
>
>
>P3
4/4pins
W1
>
1/1pins
NTC WOOFER 1
NTC WOOFER 2
NTC MIDRANGE
W.CON2
41
PCB35, P1, pin information
P4
P3 P2
14
41
P1
12 1
81
35
P4
P3 P2
1 4
41
P1
12 1
81
35

2.14 Fault ow chart
Fault symptom:
No sound from any speaker
Green LED indication
Possible causes:
Line switch settings
Defective PCB04, SMPS
Defective PCB41*, V.CON
Defective PCB30, Digital Sound Engine
Confirm -20V_
Vdrive at PCB35, P3
pin 1 (x3)
OK?
Confirm -20V_
Vdrive at PCB41*,
P1 pin 1
OK?
**
Connect the cable
for ServiceTool to
the service
connector. Any
useful information?
No
Yes
Confirm +3V V.drive
control at PCB41,
P3 pin 1
OK?
Replace defective
PCB41, V.CON
Replace defective
PCB04, SMPS
Disconnect W4
from PCB41 P3.
Confirm +3V V.drive
control at PCB30,
P8 pin 12
OK?
Replace defective
PCB41, V.CON
Replace defective
PCB30, Digital
Sound Engine
Replace the
suspected module
related to the error
log
Confirm that line
switch settings is
correct
OK?
Set line switch
settings
Confirm:
+33V at PCB04, P3
pin 4
-33V at PCB04, P3
pin 2
OK?
Replace defective
PCB30, DSE
Disconnect W3
from PCB04, P3.
Confirm +33V at
PCB04, P3 pin 4
-33V at PCB04, P3
pin 2
OK?
Replace defective
PCB04, SMPS
Fault in one of the
three PCB35,
ICEpower
amplifiers.
Disconnect one by
one and replace the
defective module
PCB04, P4, pin information - see next page
PCB30, P8, pin information - see next page
**PCB41 - Not present in all versions.
In this case follow the dashed line.
* PCB41 - Not present in all versions.