SIU GLAT2522 Open NCR Report
NCR # / Item Description / Serial # / Description of NonConformance / Disposition / Work Performed / Status00588 / Back Plane Assy / GLAT2411, 2412, 2416, 2417 / 1. S/N 1, 2, 6, 7, Exhibit some type of foreign substance (adhesive/and nylon fibers) on the connectors pins. (view attachment)
2. S/N 1, 2, 6, 7, Solder balls are embedded into the melted connector tabs (b-side CCA) or wedged in-between the through holes and tab of the connector. (view attachment)
3. S/N 2, Row 1 conn 4; S/N7 Row 1 Conn 1; S/N 7 Row 1 conn 1, Row 3 conn 1; Bent connector pins. (view attachment)
4. S/N 2, Row 4 conn 2, Excessive solder unable to view connector lead.
5. S/N 7 Row 4 conn 3, Two solder joints Insufficient amount of solder (view attachment ) / Rework / Rework Completed / CLOSED
00636 / Back plane assy EPU/SIU / GLAT 2418, 2419, 2420 /
Reject No. 1 found at the vendors:
1.S/N GLAT 2419 (1-5); GLAT 2418 (2-1) ; GLAT 2420 (1-4) ; multiple areas though out the back side / solder side of the PWB?s that exhibited excessive solder.
2. S/N GLAT 2419 Connector center key damaged. Loc= row 1 conn #4 (view attachments)
3. S/N GLAT 2418 Connector pins slightly bent. Loc = Row 2 Conn # 1, Row 3 Conn # 1. / Prob 1, 3: Rework
Prob 2: UAI / Complete / CLOSED
00660 / EPU/SIU Back Plane PWB / SEE BELOW / Flight PWBS S/N's 2-3, 3-3, 3-2, 1-1, 3-6, 2-6, 4-1, 1-6, 2-1, 3-1, 1-5, 1-2, 5-1, 2-2, 1-3, 2-4, 5-6, 5-4, Total Qty 18
During the coupon evaluation Goddard made an observation that after thermal stress was performed on the coupon sample, not every hole was filled with solder, which might indicate solderability problems. Ref: EC50503 / Reclassify as non-flight / PWBs moved to MRB cabinet; two issued as EMs to W/O. 1585 / CLOSED
00665 / CPS CCA / GLAT2239 / Problem # 1: J4 and J5 are not alainged.
Problem # 2: Solder in the bend radius of D1.
Problem # 3: Dewetted solder joint at L1.
Problem # 4: Solder joint of J4-C15 has a void (solder side).
Problem # 5: Burnt Flus at F1.
(09-22-05 er)
Problem # 6 ,Solder connection poor wetting and exposed base metal of the wire. L= VR3 Pin 5 / Prob 1: UAI
Prob 2-6: Rework / Complete on w/o 1643 / CLOSED
00670 / CPS / ALL / Problem #1: During CPS IVT, LAT-TD-04812-01, Step 5.2.3-1 and 5.2.3-2, all reqs with 0.0-0.5 need to be changed to 0.0-3.5
This change is due to the change from commercial LVDS chips to flight LVDS chips. This will require a redline change to the document.
Problem #2: LAT-TD-01673-02, Step 5.4.1-47, change req from <200m to <600m , this was outlined in the test document as seen by the screen capture of the signal, but it was not changed in the datasheets. To be redlined.
(9/21/05 ycliew)
Problem #3: LAT-TD-01673-02, Step 5.4.1-68, 5.4.1-72 : Change 3.0-3.4V to 3.0-3.5V
Problem #4: LAT-TD-01673-02, Step 5.4.1-39 and 5.4.1-41, to exclude the margin tests. To be redlines into the doc.
Problem #5: During LAT-TD-04811-02, Step 5.2.4-1, on the 3P3V-5V row Pin 1(-) should be J13-27 not J11-21. Another redline. / Document change / Revised documents to capture changes / CLOSED
00676 / SIU machined box / Small areas of hard anodize need to be removed to provide electrical path (grounding) beween components inside the box. Machining off hard anodize in these areas has been performed in house per markup drawing. 10 parts total were then cleaned, inspected.Revised drawing / Repair / Repair Completed. Document Updated / CLOSED
00678 / DAQ Electronics SIB Assy / GLAT2206 / Problem # 1: Excessive solder, contour of wire is not visible on U8
Problem # 2: J3 and J4 have dewetted solder joints and voids, Top side of the board.
10-06-05 (ER)
3. Discrepancy found at SILVER Engineering during electrical testing.
J5 Connector damaged (view attachment)
10-06-05 (ER)
4. Discrepancy found at SILVER Engineering during electrical testing.
S/N, P/N REV, Label is peeling off L= temporary labels on top of connectors (view attachment) / Prob 1, 2, 3: UAI
Prob 4: Rework / Complete / CLOSED
00679 / DAQ Electronics LCB Assy / GLAT2228 /
Problem # 1: J1/J2 and J4/J5 are not aligned. (See Nonconformance attachment 1)
Problem # 2: J1 through J5 have poor wetting, insufficient solder and voids front side of the board. (See Nonconformance attachment 2) / Use-as-is / No Rework needed per Mark Freytag / CLOSED
00682 / LCB CCA Board / GLAT 2228 / For Safe to Mate test, para. 5.3-5, on page 39, RAW 3.3V/5V, C96 P to C37, the unit of measure was incorrect. The requirement is in Kohms This test measured 1.4Kohms.
Unit requirement should have been in ohms only. / Documentation Change / Lat Doc Revised / CLOSED
00683 / SIU backplane connector panel. Connector J5 jackposts were incorrect. / GLAT2427, / 1. S/N 2427, Incorrect jackpost was installed on per LAT-DS-02064-57.item (20) was used instead of item (12). View attachment / Rework / Rework Completed per AIDS # 1660 / CLOSED
00688 / EPU/SIU Power Supply CCA / See below / 1. Design change R49, R50 resistors P/N M55342K06B33E32R do not meet electrical specification. CCA S/N GLAT 2233, 2235, 2238, 2239, 2240, 2234, 2241, 2242, 2243. Qty 9
10-10-05 (er)
2. S/N 2238 Exposed solder joints due to conformal coat not properly applied to capacitors C44, C40, 43, C41, C47, C46. (view attachment) / Documentation Change and Rework / Rework Completed. / CLOSED
00703 / EPU/SIU Back Plane and connector plate assy / GLAT 2433 / 1. Epoxy on matting (face) area of jack post J8, J5, J6 Veiw attachments
2. 5ea connector pins were found to be bent the most severe bent pin is located , Row 1 , J2, D view attachment, other locations of bent pins , Row 4, J2, C and D; Row 3 , J2 , F; Row 1, J2, C two plcs.
3. Foreign material L= CCA Connector Row 4 J3 / Rework / Completed / CLOSED
00713 / SIU Backplane GLAT2420/Harness GLAT2433/Crate GLAT2522 / GLAT2433 / 1. LAT-DS-01862 S/N GLAT2522, Harness assy S/N GLAT 2433.
During testing of LAT-TD-7012, using script name: SIUBP_EI.eht it was found that J3 and J4 twinax connectors were swapped during assembly and staking at SLAC of the backplane/harness into the crate assembly.. The connectors will be swapped and restaked.
2. J5 miss aligned unable to install connector saver to perform testing on unit. / Rework / Rework Completed per WO #1733 / CLOSED
00717 / SIU CRATE BOX ASSEMBLY / GLAT2522 / 1) 4X Chasis screws missing.
2) Bottom box cover, screw hole and and the box cover hole are misaligned. (Facing connector terminals with box lid down, it is on the second row and two hole up) / Rework / Need details of problem and rework performed / CLOSED
00728 / SIU CRATE BOX ASSEMBLY / GLAT2522 / After VIBE tests, 3 additional screws to the base plate broke off while unscrewing them off. / Rework / Need details of problem and work performed / CLOSED
00724 EPU/ SIU POWER SUPPLY GLAT2240 1. Is: CCA is physically marked as revision 56. S/B Revision 57 ReworkCompleted Per WO #1696 RFC
2. Flux residue throughout J4 and J5, mating area, top, and solder joints of the connectors. View attachments
CLOSED