7 Troubleshooting
7-8 CKF5607L
LED ColorVideoMode
Sync
H V
Normal Active Active Active Green
Stand-By Inactive Active Blank Amber
Suspend Active Inactive Blank Green/Amber blinking
Off Inactive Inactive Blank Amber blinking
7-10 Power Save Management System Failure
Does +5 V appear at
Pins 1 and 2 of IC202?
Yes
No
1.Check H & V Sync input (inactive)
2.Check IC202
Does 0 (zero) V appear at
the collector of Q603?
Yes
No
Check D609, Q601 and Q603.
OK
7-10-3 Off Mode
Table 7-1. DPMS Logic Table
Note: If the signal cable is removed, DPMS function does not operate and a self raster displays.
Does +5 V appear at
Pin 1 of IC202?
Yes
No
No
1.Check H-sync input (inactive)
2.Check IC202 and its related
circuits
Does 0 (zero) V appear at
Pin 2 of IC603?
Yes
No
Check IC603.
OK
7-10-2 Suspend Mode
Does DC +5 V appear at
Pin 7 of IC202?
Yes
1.Check V-Sync input (inactive)
2.Check Q202.
OK
7-10-1 Stand-By Mode
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