Software Updating - Sharp LC-26P55EE Service Manual

Table of Contents

LC-26P55E

LC-26GA5E

LC-32P55E

LC-32GA5E

LC-37P55E

There are 2 methods to update software in the VCTp: I2C method and RS-232C method.

RS-232C method is allowed when the TV is working properly and the action should be only software upgrade.

I2C method is required when the VCTp ﬂash is empty or corrupted (it means, any software inside IC running).

1 RS-232C Method Description

RS-232C METHOD DESCRIPTION.

The hardware tools requirement are:

1. A Modem-null (Cross type) DB9 female to DB9 female cable.

2. An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ)

1. A Modem-null (Cross type) DB9 female to DB9 female cable.

3. Make the connections as indicated in the ﬁgure:

2. An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ)

3. Make the connections as indicated in the figure:

Before using RS-232C updating method is necessary to configure a Terminal PC software.

HyperTerminal has been selected as a Terminal software because it's include in all Windows

Software requirements :

versions as an accessory, and you can find it inside "Accessories\Communications" folder. For

To upgrade VCTp software from RS-232C external connector is necessary to use a Tera Term (Pro) free software.

this reason, please follow carefully the next steps:

The URL of Tera Term home page is:

http://hp.vector.co.jp/authors/VA002416/teraterm.html

(The address may be changed in future)

Tera Term (Pro) supported operating systems:

MS-Windows 95 or upper

1. First time HyperTerminal is used, it's necessary to

MS-Windows NT 3.5 and 4.0 or upper

configure some settings. Follows next action to configure

Note.- For Windows 3.1 use Tera Term version 1.X.

two connection: low speed (9600bps) and high speed

Copy all the distribution ﬁles to an empty ﬂoppy disk or temporary directory (for example C:\ TEMP ).

(115200bps).

Run SETUP.EXE and follow the instruction given by it.

After the installation, the distribution ﬁles are no longer needed, you can delete them or may keep them in the ﬂoppy

2. Create a New Connection file with name "P55_9600bps".

disk.

3. Select a free COM port

properties as follows:

How to use Tera Term Pro :

When the Tera Term (Pro) program is used, it's necessary to conﬁgure some settings. Follows next action to conﬁg-

ure the connection: