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SERVICE BULLETIN
Product: NF MONITOR Model: PG17NS, PG19NS Bulletin No.: MON01-007 (00-C/M-E0021) Bulletin Date: May 10, 2001 ECN Date: May 10, 2001
SyncMaster 700NF, 900NF
SUBJECT: Display Shift or Size Change
Background: The PG17NS and PG19NS may have symptoms of the vertical position changing and horizontal size increasing.
Cause: Solution: To correct the vertical position shift, add a jumper wire from BD630 to C321 "+". Change the value of R301 from 100k ohm to 220k ohm. Remove jumper wire connecting IC261 #13 and JP68. To correct the horizontal size increasing symptom, change the type and tolerance on both R286 and R289 from Carbon 5% to Metal 1%.
Application Date: August 24, 2001
ORIGINAL
Location No.
R301 R286 R289
NEW
Description
R-METAL, 100k, 1% R-CARBON, 180k, 5% R-CARBON, 150k, 5%
Part No.
2004-000193 2001-000395 2001-000354
Part No.
2004-000560 2004-000398 2004-000327
Description
R-METAL, 220k, 1% R-METAL, 180k, 1% R-METAL, 150k, 1%
Revision (10-17-2001)
1
A. Countermeasure for V-position shift
1. Add jump wire on the back side of PCB BD630 IC605
C321 "+"
Revision (10-17-2001)
2
2. Replace R301 R301
3. Remove jumper wire which connecting IC261 #13(Vref) and JP68
Revision (10-17-2001) 3
Remove
B. Countermeasure for increasing H-size
Revision (10-17-2001)
4
R286
R289
Revision (10-17-2001)
5