File: ‘L:\Production\Service\Service Bulletin\Service Bulletin 2008 no 2 A25TD14b.doc
Document type:
SERVICE BULLETIN
Created:
(2008-03-19) Page 1 of 3
Technical Service Bulletin
Created by: Lab.gruppen AB Service Department
Date: 080319
Reference no: A25TD14b
Affected models
Following models are affected by this technical service bulletin:
C68:4
C48:4
C28:4
C16:4
Page:
Affected boards/modules
A25TD14b, AICO410d, AICO410e.
Symptom
A25TD14b does not fit together with AICO410d. If changing A25TD module to A25TD14b
AICO410d must be rebuilt to an AICO410e. See table below for modifications on AICO410d
to be rebuilt to an AICO410e.
THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF LABGRUPPEN AB AND TC Electronic A/S
2005 Labgruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN |.
File: ‘L:\Production\Service\Service Bulletin\Service Bulletin 2008 no 2 A25TD14b.doc
Document type:
SERVICE BULLETIN
Created:
(2008-03-19) Page 2 of 3
Page:
Solution
See table below for modifications on AICO410d to be rebuilt to an AICO410e. Exchange
resistors according to table below to rebuild the AICO410d to AICO410e.
Explanation to the resistors value: 24K.125W1%0805 equals a SMD resistor (0805) with the
value of 24kΩ, 0.125W and 1% accuracy.
Position Value on component on
AICO410d
R1 24K.125W1%0805 100K.125W1%0805
R101 24K.125W1%0805 100K.125W1%0805
R201 24K.125W1%0805 100K.125W1%0805
R301 24K.125W1%0805 100K.125W1%0805
Value on component on
AICO410e
R2 120K.125W1%0805 270K.125W1%0805
R102 120K.125W1%0805 270K.125W1%0805
R202 120K.125W1%0805 270K.125W1%0805
R302 120K.125W1%0805 270K.125W1%0805
R96 0R.125W1%0805 330K.125W1%0805
R196 0R.125W1%0805 330K.125W1%0805
R296 0R.125W1%0805 330K.125W1%0805
R396 0R.125W1%0805 330K.125W1%0805
It is common SMD resistors that shall be used. Those might be purchased at a local dealer.
Note
It is different A25TD modules for different amplifiers.
Part numbers
Model Part numbers
C68:4 A25TD14b, AICO410d, AICO410e, also see table above
C48:4 A25TD14b, AICO410d, AICO410e, also see table above
C28:4 A25TD14b, AICO410d, AICO410e, also see table above
C16:4 A25TD14b, AICO410d, AICO410e, also see table above
THIS DOCUMENT IS CONFIDENTIAL. IT MAY NOT BE REPRODUCED WITHOUT THE WRITTEN PERMISSION OF LABGRUPPEN AB AND TC Electronic A/S
2005 Labgruppen AB, Faktorvägen 1, S-434 44 KUNGSBACKA, SWEDEN |.