Subsidiary Functions For Servicing/ Electric Circuit Adjustment; Subsidiary Functions For Servicing; Information On Firmware; Checking Firmware Versions - Hitachi DZMV238EAU Service Manual

CHAPTER 3

Subsidiary Functions for Servicing

Prohibition:
This information deals with functions exclusively used for servicing (not disclosed to persons other than
service engineers): Do not disclose this information to customers.
Perform the following functions with DVD video camera/recorder turned on and LCD monitor open (while viewing the LCD
screen).
Use the buttons on DVD video camera/recorder for all operations.
1.

Information on Firmware

Firmware refers to the software programs used to operate the DVD video camera/recorder: They are stored in the micropro-
cessors of DVD video camera/recorder at factory during production. This DVD video camera/recorder stores the following four
firmware programs:
Type of firmware
System firmware
Camera microprocessor firmware
Disc drive main firmware
Disc drive core firmware

1.1 Checking firmware versions

Purpose:
To display the versions of the following firmware programs stored in the
microprocessors of DVD video camera/recorder (Fig. 1-1):
System firmware:
Camera microprocessor firmware:
Disc drive main firmware:
Disc drive core firmware:
Pertinent case:
When the factory asks you to check, or you want to ask the factory about the
servicing method.
Operational procedure:
1) Turn the DVD video camera/recorder on, and then press the DISC
NAVIGATION button.
2) While the Disc Navigation screen is displayed, tilt the joystick up and
hold it, and then press the following 2 buttons simultaneously:
SELECT
REC
To restore normal status, press the stop/cancel button.
Note: Operation (display) is possible without DVD-RAM or DVD-R disc loaded.
When performing the operation, it is not necessary to press the DISC
NAVIGATION button.
SUBSIDIARY FUNCTIONS FOR SERVICING/
ELECTRIC CIRCUIT ADJUSTMENT
Software that drives SH CPU: Controls the operation of entire
system, such as recording, playback, Disc Navigation,
connections with external device
Controls the operation of camera block (including optical
system), clock, battery, input/output.
These programs control the DVD disc drive system (mecha-
nism block).
System
Cam Ver
Drive (Main)
Drive (Core)
Description
Example of firmware version display
Remarks
Does not require updating
Does not require updating
Version
Model: DZ-MV230E
System: ver 2.1
Jan 31 2002 12:12:12
Cam Ver: 9.09.1
Drive (Main): Z99Y. 88. 77. REV
Drive (Core): A11B. 22. 33. REV
RETURN
Fig. 1-1
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