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12-09340-00

June 1973

1 pages

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0.1MB

Document:	H605
Order Number:	12-09340-00
Revision:	0
Pages:	1
Original Filename:	H605.pdf

OCR Text

Engineering Change
Order Log

PROCESSOR TYPE

LA30 Motor Drive
Amplifier

All

cs:

CODE: D
H605-00001
C
ETCH: D
APR-71 - CORRECTION: Relocate diode Dl and resistor R3 to provide
clearance for resistor Rl.
In-plant effectivity -03 rework immediately
H605-00002

CODE: P

cs: D

NOV-71 - CORRECTION: Change part number on drawings and Parts
List from 12-09340 to 12-09340-00 to ensure proper MATE-N-LOCK connector
is used.
In-plant effectivity -06 documentation change

H605-D0003

CODE: F

cs: E

FEB-73 - PROBLEM: Hot diodes result in discoloration of printed circuit
board.
CORRECTION: Raise diodes so that they do not touch the board.
In-plant effectivity -03 rework immediately
Field effectivity -Exchange H605's in LA30's as required; replace a CS revision "c .. board with CS revision "D ".
( Time To Install And Test 1.5 Hours. ) ( Kit Contents -FCOlPrints And
Parts)

H605-00004

CODE: D

H605

cs: F

H605-0006A

CODE: D

SEP-73 - PROBLEM: Redundancy has occurred in ECO changes; revision levels are incorrectly specified.
CORRECTION: Cancel ECO H605-00006.
In-plant effectivity -Cancelled

H605-00007

CODE: D

cs: J

SEP-73 - PROBLEM 1: Irregular performance of carriage due to G936
and carriage tolerance.
CORRECTION 1: Replace 39 ohm resistor with a 43 ohm resistor.
PROBLEM 2: Documentation is incorrect with regard to revision level.
CORRECTION 2: Revision letter is updated to reflect correct level.
NOTE: See correction supplement H605-OOO7A.
In-plant effectivity -Retrofit all H605's from Puerto Rico by June 22; all
H605's at Westfield and Westminster if problem is present.

H605-0007A

CODE: D

JUL-73 - CORRECTION: There were typographical errors on sheet 1 of
ECO H605-OO007; that sheet is superseded by sheet 1 of supplement ECO
H605-0007A.
In-plant effectivity -Unchanged

ETCH: E

MAR-73 - PROBLEM: Hot diodes result in discoloration of the printed
circuit board and failure of the diodes.
CORRECTION: Redesign board to give large heatsink area under diodes;
add transistor.
In-plant effectivity -02 phase-in by May I, 1973

H605-C0005

CODE: F

cs: H

APR-73 - PROBLEM: Diodes on board are running HOT resulting in discoloration of the board.
CORRECTION: Raise diode D8 ; add heat sinks to 08 and D9.
NOTE: See continuation supplement FCO H605-C005A.
In-plant effectivity -03 • retrofit all units that have not been shipped.
Field effectivity -Rework all H605's if symptoms are present.
( Time To Install And Test 1.0 Hour. ) ( Kit Contents -FCOlPrints And
Parts)

H605-C005A

CODE: F

cs: El

SEP-73 - CORRECTION: The CS revision level of all etch revision "A ..
thru "D .. boards, retrofitted with heat sinks, will be "El ". Either heat
sink clip #12-11361 or #90-07203 can be used, depending on availability. No
boards after etch revision "E .. will be retrofitted with heat sinks.
In-plant effectivity -Retrofit immediately, as of October I, 1973.
Field effectivity -Retrofit immediately

H605-00006

CODE: D

JUL-73 - PROBLEM: Unavailability of copper heat sink and excessive
cost of same, #12-11361.
CORRECTION: Allow parts substitution with beryllium copper clip, #9007203; either heat sink may be used.
NOTE 1: Heat sink clips are to be used on etch revision "0 .. boards
only.
NOTE 2: This ECO is cancelled by supplement ECO H605-0006A.
NOTE 3: CS revision "El ", ordered by this ECO, was cancelled by ECO
H605-0006A.
In-plant effectivity -02 phase-in as of 5-31

Printed in U.S.A.

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