General Troubleshooting Guide
92
202P4 M25P
NO DISPLAY,
but LED is ON
or LED is amber(yellow)
LED
Amber? or
Green?
1
Checkpoint:
1. No Macintosh adaptor attached to the plug of signal cable if using the IBM PC
2. A symptom of no color on models equipped with the Plug & Plug feature (DDC)
may be seen when these monitors are connected to a NON-DDC Host or Computer.
Order a DDC Eliminator Adaptor, P/N 4822 263 50248 from our Customer Care Center.
3. Try to swap the selection of "BNC /Dsub" signal selector in the rear of monitor, if it has.
4. Try to swap the selection of "SOG/TTL"sync selector in the rear of monitor, if it has.
5. Keep pressing the OSD menu for a few seconds to expect a OSD control menu
come out to select the "SOG / TTL sync"
6. Remove your USB cable from computer. Reboot computer in safe Mode or DOS mode
7. Disable the DDC 1/2B feature via OSD menu manipulation.
8. Click your mouse or type some word with your keyboard to wake up computer
from saving status.
9. Check that your video cable is plugged in and does not have bent pins.
Continued
Summary of Contents for 202P4
Page 31: ...Terminal Schematic Diagram A1 Go to cover page ...
Page 33: ......
Page 34: ......
Page 35: ...Go to cover page ...
Page 37: ...Key Control Schematic Diagram 202P4 M25P 32 34 Go to cover page E ...
Page 39: ...Go to cover page ...
Page 41: ......
Page 43: ...Power Schematic Diagram C C1 C6 C2 C7 C3 C4 C5 C9 C8 Go to cover page ...
Page 45: ...Drive Schematic Diagram 202P4 M25P 32 38 D Go to cover page ...
Page 91: ...83 202P4 M25P Repair Flow Chart Go to cover page 7 0 2 ...