Read Sony DPP-SV77 Service Manual online
5-1
DPP-SV77 V1
Section 5
Troubleshooting
5-1. Electrical Troubleshooting
Electrical troubles are described below.
Trouble: No video signal is output. (No monitor screen is displayed.)
Remedy:
Remedy:
. Confirm flat cable FFC (between the DK-43 and MD-43 boards).
. Confirm IC202 on the DK-43 board and the peripheral circuit.
. Confirm that the input selector key is set to the memory stick or PC card.
. Confirm that the video output is not see to <off> in the menu screen.
n
A video signal cannot be output when the input selector key is set to the personal computer.
Confirm using the input selector key of the main unit.
. Confirm IC202 on the DK-43 board and the peripheral circuit.
. Confirm that the input selector key is set to the memory stick or PC card.
. Confirm that the video output is not see to <off> in the menu screen.
n
A video signal cannot be output when the input selector key is set to the personal computer.
Confirm using the input selector key of the main unit.
Trouble: No memory stick image can be read.
Remedy:
. Confirm CN181 on the DK-43 board and the peripheral circuit.
. Confirm IC101 on the DK-43 board and the peripheral circuit.
. Confirm IC101 on the DK-43 board and the peripheral circuit.
Trouble: No PC card image can be read.
Remedy:
. Confirm CN254 on the DK-43 board and the peripheral circuit.
. Confirm IC251 on the DK-43 board and the peripheral circuit.
. Confirm IC251 on the DK-43 board and the peripheral circuit.
Trouble: A printer is not recognized by the personal computer.
Remedy:
. Confirm IC951 on the MD-43 board and the peripheral circuit.
. Confirm IC101 on the DK-43 board and the peripheral circuit.
. Confirm flat cable FFC (between the DK-43 and MD-43 boards).
. Confirm IC101 on the DK-43 board and the peripheral circuit.
. Confirm flat cable FFC (between the DK-43 and MD-43 boards).
Trouble: The print color is not proper and the image is not normal.
Remedy:
Remedy:
. Make a gray print in “TEST6” of the service mode for confirmation.
(Refer to “4-5. Density Adjustment During Thermal Head Replacement”.)
. Confirm CN253 on the DK-41 board and the peripheral circuit.
. Confirm flat cable FFC (between DK-43 board and thermal head).
. Confirm “LCD CONTRAST” of the service mode.
. Confirm flat cable FFC (between DK-43 board and thermal head).
. Confirm “LCD CONTRAST” of the service mode.
Trouble: No image appears on the LCD.
Remedy:
. Confirm flexible wiring board between the LCD and the main unit.
. Confirm IC501 on the DK-43 board and the peripheral circuit.
. Confirm CN503 on the DK-43 board and the peripheral circuit.
. Confirm the liquid crystal displaying module and inverter unit.
. Confirm IC501 on the DK-43 board and the peripheral circuit.
. Confirm CN503 on the DK-43 board and the peripheral circuit.
. Confirm the liquid crystal displaying module and inverter unit.
Trouble: Touch panel does not operate.
Remedy:
. Confirm touch panel.
. Confirm the TP-43 board.
. Confirm flexible wiring board between the LCD and the main unit.
. Confirm the TP-43 board.
. Confirm flexible wiring board between the LCD and the main unit.
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