Read Sharp UP-5700 (serv.man7) Service Manual online
2. Set SW1 on the BIOS loading board to the side of pin 3.
3. Open the upper cabinet.
4. Connect the BIOS loading board to the option ROM/RAM connec-
tor CN19 on the main PWB, and then close the cabinet.
5. Writing the BIOS ROM program starts by turning on the power
switch on the right side.
For the status of LED on the special service PWB when a BIOS
ROM program is being written, see the following table.
ROM program is being written, see the following table.
Writing is complete (automatic completion) when the green LED
(LED9) on the BIOS loading board lights up.
(LED9) on the BIOS loading board lights up.
6. After writing is complete, turn off the power switch on the right
side to remove the BIOS loading board, and turn on the power
switch on the left side again to check whether the BIOS program
starts up normally or not.
switch on the left side again to check whether the BIOS program
starts up normally or not.
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
SW1
1
3
SW1
1
3
SW1
2 – 9
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