PN-R703 (serv.man5) - Sharp Monitor Service Manual (repair manual). Page 107

PN-R903/R703/R603　FIRMWARE UPDATE PROCEDURES

 5 – 8

The operating conditions for LAN firmware update of the information
display are as follows.

The RS-232C cable required for update is as follows. Connect the COM
port of PC and the RS-232C input terminal of the display with the cable. 

 

In the power off(stanby mode) mode and input signal waiting mode, 
LAN firmware cannot update. 
Be sure to update in the state where it returned from input signal waiting
mode and it turned ON the power supply. 
The firmware update should display with the remote control in the state
which can be operated. It may fail, if it carries out immediately after AC
power activation

Press the [LAN Firmware] button of the Service Launcher.

1 ) Select the COM port to be used for communication and input the

transfer rate specified with the Information Display.
 (In the right illustration, [COM1: 38400bps] is selected.) …①

2 ) You are to select the firmware file “PNAX_CF_MAIN_cs.S19”, but

you don't need to make any change. …②

3 ) By pressing [START] button, firmware update start. …③

4 ) the confirmation window of version and checksum is displayed.

Confirm that the version and checksum are correct, and then press
[OK].

The writing is completed in about 3 minutes. Once “Complete!” is
displayed, the firmware update has been finished.
After writing, turn OFF and ON the main power.

■ WHEN UPDATING IS FAILED

A return procedure when the power supply was turned OFF in the mid-
dle of write-in, or a cable falls out and update goes wrong is explained.

1. Turn the main power ON again
2. Please update in the same procedure as the usual writing. 

n

Windows XP

n

Windows Vista

n

Windows 7 

RS-232C port recognized as a COM port
(Which allows communication in 115Kbps.)

Straight cable (D-SUB 9pin female - female)

RS-232 straight cable

(commercially available)

To COM port

PC

RS-232C input terminal

…①

…②

…③