2. FTF Fusion Utilization
Team members
• Team Leader : C.S.Tu
• CSTD : Peace Lin.
• Equipment TESEC: J.T.Chiu.
• System Group :C.S.Tu
Division, Content owner, Date(in numbers), ISO No 2
3. Fusion Utilization Status
Item Month Nov-02 Dec-02
Working Testers 6.3 8.3
Non-Schedule Time
Meal / Break time+Holiday 0.0 0.0
No Order 4.8 18.7
Sub Total 4.8 18.7
Planning Utilization (a) 95.2 81.3
Unschedule Downtime
Maintenance Delay 1.6 1.0
Tester repair time 4.5 2.9% 2.3
Sub Total 6.1 3.3
Schedule Downtime (2.8% Sub Total)
PM / Calibration 0.6 0.3
Change over time 1.4 1.3
Sub Total 2.1 1.5
Engineering time 3.8 1.4% 5.2
Standby Time
Small stop 3.8 1.2% 2.6
Waiting for material 0.0 0.0
Type down related stop 2.8 1.5% 4.3
Handler down related stop 1.9 0.5% 2.4
Handle PM 0.0 0.0
Others 3.6 0.2% 3.4
Sub Total 12.0 12.7
Productive Time
Production 66.7 51.0
Maunal Test 0.1 0.3
Tester unstable 4.0 2.4% 6.4
Handler unstable 0.4 0.8
Sub Total 71.2 58.5
Planning Utilization (a) 95.2 81.3
Operation Utilization (b) 74.8 71.4
Overall Tester Utilization (a)x(b)
71.2 58.5
Overall Tester Utilization from Output
53.2 30.3
Division, Content owner, Date(in numbers), ISO No 3
4. Standby Time Analysis ( Dec-02)
* Standby time in Dec have 12.7% more than in Nov.
Small stop
Wait for Type 21%
Others 0%
27% Waiting for
material
0%
Handle PM
0%
Type down
Handler down related stop
related stop 33%
19%
-Plan_list is here !
Division, Content owner, Date(in numbers), ISO No 4
5. System Down Root Causes analysis (Dec-02)
Tester Repair Time have 4.5% in Nov and 2.7% in Dec :
Root Cause:
In Nov Fusion FTF had two testers down because of its VME
power Supply and Lamda power pupply, the VME power
supply (no spare on hand).
Action :
Investigate adding this part to LSI item.(Fixed at WK248)
Engineering time 3.8% in Nov and 5.2% in Dec :
Root cause :
Depend on users .
Division, Content owner, Date(in numbers), ISO No 5
6. Small Stop Causes analysis (Dec-02)
Small Stop have 3.8% in Nov and 2.6% in Dec
Root causes :
* System problems, handler problems and types problems cause
high small stop .
* In Dec >18% of No order , high idle rate .
Improvement direction :
* Need supports form RM group record down the small down .
* Need Type/System/Eguip to improve their equipments down. .
* Need Operator’s Leader to monitor the small stop.
Division, Content owner, Date(in numbers), ISO No 6
7. Others Down Root Causes analysis (Dec-02)
“Others “ have 3.5% n Dec lower than 3.6% in Nov and
4.5% in Oct .
Root Causes :
Others Down Analysis in Nov
等待生產 (Wait for
換 Type完成等待生 devices for prod)1%
產 (wait for prod after
change type )0% 等待換 Type
高壓空氣不足 (WaitforChangeType)
(Vaccum Problem)0% 6%
機台待升降溫度
(handler Warm up)
11%
讀程式 (Load
program)
82%
Action:
Investigate histroy in ACS , prevent unnecessary action in reading test
program when type /sysem/ equip problems happen.
Division, Content owner, Date(in numbers), ISO No 7
8. Type Down Root Causes analysis (Dec-02)
•In Nov & Dec have different status of type down :
(Compared with Type Down.)
In Nov the Main Types Down % (Nov/2002) In Dec the Main Types Down% (Dec/2002)
PCD8012H/E27/4 14.27% PCF50601ET/N5/S30 31.22%
PCF50601ET/N5/S30 14.40% PCD8012H/E27/4 12.64%
VP40584B3 12.54% VP40581H4 11.81%
OM6353E/271/2 8.79% VP40581H7 9.19%
PCF87750E/F2 8.71% OM6353E/2A3/2 7.38%
VP40554-2 8.59% OM6353E/2A3/2/M1 5.76%
120.00%
100.00%
80.00%
60.00%
40.00%
20.00%
0.00%
Top Three Down Oc
In t In Oct I n No Nov
Inv In Dec c
I n De
QA un-pass 56.75% 35.67% 31.66%
Low yi el d 11.25% 19.16% 17.09%
Al l fai l 11.25% 16.26% 32.27%
Change Type Fai l 7.70% 16.14% 18.98%
Division, Content owner, Date(in numbers), ISO No 8
9. Handler Down Root Causes analysis ( Dec-02)
Root Causes Analysis
Top Three problems in Handler In Nov
In Oct In Dec
機台區問題
* TESEC’s Loader and Un-Loader still (Handler loader
area )
31.84% 34.45% 41.91%
are the main problems. 機台異常
(Index problem)
23.79% 32.69% 19.88%
機台區問題
(Hnadler unloader 26.10% 16.25% 21.64%
Unstable Handler Analysis area)
In Oct In Nov In Dec
Handler_idP Handler_idP Handler_idProble
Percentage Percentage m
Down Percentage
roblem roblem
3940 14.96% 3952 30.38% 3955 12.84% *Also found some TESEC
3955
3958
16.11%
32.62%
3955
3959
20.80%
17.66%
3959
3976
11.13%
13.57%
are unstable , especially
3959 15.07% 4303 15.20% 4303 16.90% 3955 & 3959 .
90.00%
80.00%
機台異常 (I ndex
70.00%
problem)
60.00%
50.00% 機台區問題(Hnadler
unloader area)
40.00%
30.00%
20.00% 機台區問題 (Handl er
loader area )
10.00%
0.00%
In Oct In Nov In Dec
Division, Content owner, Date(in numbers), ISO No 9
