Dell 2000FP Service Manual page 47

Dell 2000FP LCD Monitor Service Guide
D-SUB troubleshooting
Normal operation
The monitor supports up to UXGA 60Hz on the D-SUB port. The image is displayed normally.
Troubleshooting scope
This troubleshooting applies to the case that 'Check Signal Cable' is working normally but the image on D-
SUB is not displaying correctly.
Step Check item
1 Current input source is D-SUB. Remove
D-SUB cable and see if the floating
message 'Check Signal Cable' appears.
2 Plug in D-SUB cable and check if any
image is displaying
3 Check if image becomes normal by
automatically or manually adjusting
Pixel Clock and Phase in OSD
4 Check if H-sync and V-sync is good at
R260, R261 and pin 2, 3, 5 and 6 of
IC905
5 Check if G-CLK clock signal is good at
R917
6 Check if R/G/B input signal at pin 7, 15,
22 of IC907 and IC107 is good
DVI troubleshooting
Normal operation
The monitor supports up to UXGA 60Hz on the DVI port. The image is displayed normally.
Troubleshooting scope
This troubleshooting applies to the case that 'Check Signal Cable' is working normally but the image on DVI
is not displaying correctly.
Step Check item
1 Current input source is DVI. Remove
DVI cable and see if the floating
message 'Check Signal Cable' appears.
2 Plug in DVI cable and check if any
image is displaying.
3 Check if sync and clock are good at
RP413.
4 Check if DVI signal cable and connector
CON401 are OK.
5 Check if DDC on DVI port is OK
S-Video troubleshooting
Normal operation
Yes
Step 2
Step 3
CND / The monitor is good.
Step 5
Step 6
Check IC901 and IC107 circuit Check D-SUB signal cable and
Yes
Step 2
Step 4
Check IC401 circuit.
Step 5
Replace IC401.
3
Confidential
Trouble Shooting
No
No video troubleshooting
Step 4
Step 4
Check components on H-sync
and V-sync paths
Check IC901 and IC107 circuit
connector CON101.
No
No video troubleshooting
Step 3
Step 4
Fix the cable and connector.
Check EDID and DDC circuit at
IC402.
Note
Note