Engineering change order #751, Powerpac 300 – Bryston 60 User Manual
Page 11
MODELS: Logical character search strings using AND/OR/NOT operators with "asterisk" and "question mark" wildcards, or list ALL models explicitly.
Priority 1: Immediate and unconditional; current production halted until new parts or procedures available. All finished units retrofitted.
Priority 2: All units in production (i.e. all unfinished units) will use new parts or procedures as soon as they become available.
Priority 3: New parts or procedures will be used as soon as they become available AND as soon as existing parts are depleted or declared dead stock.
Priority 4: Alternate parts MAY be used as demand requires.
SAFETY STANDARDS EVALUATIONS: All changes must be assessed to determine their possible impact on Safety Standards approvals and the need to either resubmit
specific documentation, or the entire unit, for updated certification. If it is determined that Safety Standards approvals may be affected, then a Safety Standards Approval
Report must be attached to this ECO detailing steps taken to update necessary approvals.
ECO13.dot WRP 29 Jan 2004
ENGINEERING CHANGE ORDER #751
MODELS
AFFECTED:
POWERPAC 300*
SUBJECT:
MODIFYING REMOTE BOARD AND USING A NEW STANDOFF
ISSUE DATE
ENGINEER(s)
PRIORITY STARTING SERIAL No.
30-Apr-04 FN
1
DETAILED DESCRIPTION of, and REASONS for, CHANGE
DUE TO MECHANICAL PROBLEM IN ORDER TO HOLD REMOTE BOARD TO INLET BOARD
COMPLETELY TIGHT, WE NEED TO MODIFY REMOTE BOARD BY DRILLING OUT A HOLE
FOR SCREW #4 AND CUT ON THE BOTTOM TRACE TOWARD C404 CAPACITOR, THEN IN
MECHANICAL ASSEMBLY INSERT A MALE STANDOFF 1945 INTO BACK OF ONE OF THE
INLET BOARD STANDOFFS AND USE SCREW #4 TO TIGHT FROM BOTTOM OF REMOTE
BOARD INTO FEMALE SIDE OF ABOVE STANDOFF.
DOCUMENTS :
DOCUMENT NAME
DOCUMENT DESCRIPTION
ENGR(s)
STATUS
ECO-751_1
MECHANICAL ASSEMBLY DIAGRAM FOR
REMOTE AND INLET BOARDS
FN COMPLETE
ECO-751_2
ASSEMBLY INSTRUCTION OF REMOTE BOARD
FN
COMPLETE
ENGINEERING
PURCHASING
PRODUCTION
IS A SAFETY STANDARDS RE-
EVALUATION REQUIRED (Y/N)?
(See foot note)
Y
#4-40 3/16"L
Flat Head
UnderCut
Swaged standoff
Threaded 4-40
Front/Top Panel
Inlet Board
Remote Board
#1945
Threaded 4-40 plus 4-40 post
Nickel over brass standoff
#4-40 1/4"L
Pan Head
IEC320
Power Inlet
NEW
This mounting hole for
the #1945 standoff
does not exist in the
current Remote Board
and must, therefore, be
drilled out.