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9 Troubleshooting
{ Power save management system feilure
|
Stand-By Mode
{
Suspend Mode
No
1.Check H-Sync input {inactive}.
2.Check IC201 and its related
circuits
Does DC +5V appear at
pin 20 of 1C201?
Does 0 (zero) V appear
at pin 50 of 10201?
Does 0 (zero) V appear at
pin 2 of IC605?
enol
1.Check V-Sync input {inactive).
OK
2.Check 1C201.
;
Off Mode
1.Check H & V Sync input (inactive).
2.Check 10201.
Does 0 (zero) V appear
at pins 49 and 50 of IC201?
Does 0 (zero) V appear at
collector of 0604?
Check 1C601, 0604 and Q605.
Table 9-2. DPMS Logic Table
SYNC
:
ee
Norma!
Active
Active
Green
Stand-By
Inactive
Active
Orange
Suspend
Active
Inactive
Orange/Green blinking
Off
Inactive
Inactive
Orange blinking
Note: If signal cable is removed, DPMS function does not operate and a self raster displays.
Samsung Electronics SyncMaster 17GLi
9-7
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