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Service Manual
40
5. No picture & Backlight on
No picture & Backlight on
Touch OSD Menu Button,
Does OSD display?
Is there R.G.B signal in
U401 #99, #96 #93?
Is there clock signal in
U401 #109?
Check DC 5.0V on
CN501#1, #2, #3
Are there data output on
U401#7~#16, #31~#40
Change U401
END
Change D301,
D302 & D303
Check Q501 circuit
YES
YES
YES
YES
YES
NO
NO
NO
Change X401
NO
Summary of Contents for 1907FPf
Page 1: ...Service Manual 0 Service Manual LCD Monitor 1907FPf ...
Page 55: ...Service Manual 54 ...
Page 56: ...Service Manual 55 Attachment 2 Schematic ...
Page 57: ...Service Manual 56 ...
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Page 70: ...Service Manual 69 ...
Page 71: ...Service Manual 70 Attachment 3 PCB Layout Interface Board ...
Page 72: ...Service Manual 71 ...
Page 73: ...Service Manual 72 Power Inverter Board ...
Page 74: ...Service Manual 73 Keypad Board ...
Page 75: ...Service Manual 74 ...
Page 76: ...Service Manual 75 USB Control Board ...
Page 77: ...Service Manual 76 Inverter Control Board ...
Page 78: ...Service Manual 77 Power Control Board ...
Page 79: ...Service Manual 78 ...
Page 80: ...Service Manual 79 ...