Troubleshooting; Electrical Troubleshooting - Sony DPP-EX7 Service Manual

4-1. Electrical Troubleshooting

Electrical troubles are described below.
Trouble: No memory stick image can be read.
Remedy: . Confirm the input selector switch is set to the memory stick.
. Confirm CN181 on the DK-45 board and the peripheral circuit.
. Confirm IC101 on the DK-45 board and the peripheral circuit.
. Confirm the file format is enabled for the memory stick image.
Trouble: No PC card image can be read.
Remedy: . Confirm the input selector is set to the PC card.
. Confirm CN254 on the DK-45 board and the peripheral circuit.
. Confirm IC251 on the DK-45 board and the peripheral circuit.
. Confirm the file format is enabled for the memory stick image.
Trouble: A printer is not recognized by the personal computer.
Remedy: . Confirm IC951 on the MD-45 board and the peripheral circuit.
. Confirm IC101 on the DK-45 board and the peripheral circuit.
. Confirm flexible flat cable (26 pins).
Trouble: The print color is not proper and the image is not normal.
Remedy: . Make a gray print in "MECHANIC TEST" of the service mode for confirmation.
(Refer to "3-4. Density Adjustment for During Thermal Head Replacement".)
. Confirm CN253 on the DK-45 board and the peripheral circuit.
. Confirm flat cable FFC (between DK-45 board and thermal head).
Trouble: No image appears on the LCD.
Remedy: . Confirm flexible wiring board between the LCD and the main unit.
. Confirm IC101 on the DK-45 board and the peripheral circuit.
. Confirm CN201 on the DK-45 board and the peripheral circuit.
. Confirm the liquid crystal displaying module, inverter unit and flexible flat cable.
. Confirm "LCD CONTRAST" of the service mode.
Trouble: Touch panel does not operate.
Remedy: . Confirm touch panel.
. Confirm the TP-45 board.
. Confirm flexible wiring board between the LCD and the main unit.
DPP-EX7 V1
Section 4

Troubleshooting

4-1