B6.1.4
T855 PCB Information
M850-00
31/09/98 Copyright TEL
Parts Lists
The 10 digit numbers (000-00000-00) in this Parts List are “internal part numbers” (IPNs). We can
process your spare parts orders more efficiently and accurately if you quote the IPN and provide a
brief description of the part.
The components listed in this parts list are divided into two main types: those with a circuit refer-
ence (e.g. C2, D1, R121, etc.) and those without (miscellaneous and mechanical).
Those with a circuit reference are grouped in alphabetical order and then in numerical order within
each group. Each component entry comprises three or four columns, as shown below:
The miscellaneous and mechanical section lists the variant and common parts in IPN order.
Parts List Amendments
At the front of the parts list is the Parts List Amendments box (an example of which is shown
below). This box contains a list of component changes which took place after the parts list and dia-
grams in this section were compiled. These changes (e.g. value changes, added/deleted compo-
nents, etc.) are listed by circuit reference in alphanumeric order and supersede the information
given in the parts list or diagrams. Components without circuit references are listed in IPN order.
The number in brackets at the end of each entry refers to the Tait internal Change Order document.
circuit reference -
lists components
in alphanumeric
order
variant column -
indicates that this is
a variant component
which is fitted only to
the product type listed
Internal Part Number -
order the component
b
this number
description -
gives a brief description
of the component
Parts List Amendments
R306 Changed from 180Ω to 560Ω (036-13560-00) to increase sensitivity (71003).
circuit reference
or IPN
description
of change
IPN of new
component
Change Order
number
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