MEX-1HD - Sony Car Audio Service Manual (repair manual). Page 22

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If either of the following ICs was replaced with new one, the part
supplied for repair contains old version programs, and thus the
version of microcomputer software must be updated.

1) Main section (when IC1030 was replaced)*

1-1. MAIN board replacement
1-2. Flash memory (IC1030 on the MAIN board) replacement

2) Sub section (when IC501 was replaced)

2-1. SUB board replacement
2-2. Microcomputer (IC501 on the SUB board) replacement

3) CD servo section (when IC9 was replaced)

3-1. SERVO board replacement
3-2. Flash memory (IC9 on the SERVO board) replacement

*) If the flash memory (IC1030 on the MAIN board) or MAIN

board was replaced, the work including the system ID setting
is required, besides this work described here. For details, see
“Relating with ID” in the next paragraph, after the completion
of this work.

Procedure:
• Check the versions
1. After replacing the parts, turn the power on and enter the test

mode. (Refer to page 21 “Entering The Test Mode”)

2. Select the “Test Mode” from the test mode main menu by ro-

tating the right jog dial (PUSH LIST), and press the right jog
button (PUSH LIST) to enter the Test Mode.

3. Rotate the right jog dial (PUSH LIST) to select the “Version”,

and press the right jog button (PUSH LIST) to enter the Ver-
sion mode.

4. Rotate the right jog dial (PUSH LIST) to select the “Version”,

and press the right jog button (PUSH LIST) to display the ver-
sion of each section (main, sub, CD servo)

5. Update the version in each section by referring to the opera-

tion for version up, if each version is not as listed below.

Section

Initial Lot type

User Upgrade type

Main

1.00.05

2.03.0D *

Sub

1.00.02

1.00.0D *

CD servo

0.03.60

0.03.60 *

*) There are several kinds of versions in the upgraded type (CDDB

compatible), and this table lists the latest version as of the end
of May in 2003.
The latest version may be updated after this Service Manual
was issued, and therefore make sure the latest version by re-
ferring to the Technical News issued at the version updating.

The version updating work must be performed without connecting
the HDD, if only the flash memory (IC1030 on MAIN board) or the
MAIN board is replaced without replacing the HDD at the same time.
In this case, perform the version updating work with the flat cable
between CN2001 on MAIN board and HDD disconnected, and after
the version updating completed, reconnect it.

1. Chech the version of CD-R for service and insert the disc to

the set.

2. Select the “Test Mode” from the test mode main menu by ro-

tating the right jog dial (PUSH LIST), and press the right jog
button (PUSH LIST) to enter the Test Mode.

3. Rotate the right jog dial (PUSH LIST) to select the “Version”,

and press the right jog button (PUSH LIST) to enter the Ver-
sion mode.

4. Rotate the right jog dial (PUSH LIST) to select the “Version

Up”, and press the right jog button (PUSH LIST) to enter the
Version Up mode.

5. Rotate the right jog dial (PUSH LIST) to select the “Main”,

and press the right jog button (PUSH LIST) to display the
present version information of main section.

6. Press the function button 1 (“UPDATE”) to display confirma-

tion screen of start the processing.

7. Rotate the right jog dial (PUSH LIST) to select the “OK”, and

press the right jog button (PUSH LIST) to start the process-
ing.
(process time: about 14 minutes)

8. Upon completion of the processing, the “Update is Finished”

will be displayed.

9. The version displayed at this time is the one before version

up, and therefore turn off the main power to exit the Test mode
once, and then enter the Test mode again to check the version.

10. Perform the work including the ID setting by referring to “Re-

lating with ID” in the next paragraph.

1. Chech the version of CD-R for service and insert the disc to

the set.

2. Select the “Test Mode” from the test mode main menu by ro-

tating the right jog dial (PUSH LIST), and press the right jog
button (PUSH LIST) to enter the Test Mode.

3. Rotate the right jog dial (PUSH LIST) to select the “Version”,

and press the right jog button (PUSH LIST) to enter the Ver-
sion mode.

4. Rotate the right jog dial (PUSH LIST) to select the “Super

Version Up”, and press the right jog button (PUSH LIST) to
enter the Super Version Up mode.

5. Rotate the right jog dial (PUSH LIST) to select the “Sub”, and

press the right jog button (PUSH LIST) to display the present
version information of sub section.

6. Press the function button 1 (“UPDATE”) to display confirma-

tion screen of start the processing.

7. Rotate the right jog dial (PUSH LIST) to select the “OK”, and

press the right jog button (PUSH LIST) to start the process-
ing.
(process time: about 4 minutes)

8. Upon completion of the processing, the “Update is Finished”

will be displayed, and then will be release the test mode auto-
matically.

9. Enter the test mode again, and check the version.

The version updating of the CD servo section is performed not
from the CD-R but from the Memory Stick. Download the
“CMX550D.MOT” from the “ftp” server for service and store
it in the ROOT directory of the Memory Stick for use.

1. Insert the memory stick for service to the set.
2. Select the “Test Mode” from the test mode main menu by ro-

tating the right jog dial (PUSH LIST), and press the right jog
button (PUSH LIST) to enter the Test Mode.

3. Rotate the right jog dial (PUSH LIST) to select the “Version”,

and press the right jog button (PUSH LIST) to enter the Ver-
sion mode.

4. Rotate the right jog dial (PUSH LIST) to select the “Version

Up”, and press the right jog button (PUSH LIST) to enter the
Version Up mode.

5. Rotate the right jog dial (PUSH LIST) to select the “CD Drive”,

and press the right jog button (PUSH LIST) to display the
present version information of CD servo section.