NWZ-E443, NWZ-E443K, NWZ-E444, NWZ-E444K, NWZ-E445 - Sony Audio Service Manual (repair manual). Page 4

NWZ-E443 and NWZ-E444 have the model to whom the speaker is at-
tached (NWZ-E443K/E444K).
However, the model name of the main unit of WALKMAN of NWZ-
E443K and E444K are NWZ-E443 and NWZ-E444.
The setting of the fi rmware is different in the WALKMAN for single sales 
model and the WALKMAN to which the speaker is attached.
Therefore, it is necessary to distinguish whether the WALKMAN brought 
in to the repair is the WALKMAN to which the speaker is attached.

Distinguish by the serial number referring to “F-number and Serial number 
range List” (page 8).

In the WALKMAN for supplied speaker model, marking is given on the 
MAIN board.
Note: Execute marking at the same position when you exchange the 

MAIN board.

MAIN BOARD

Marking: WALKMAN for supplied speaker model.
No Marking: WALKMAN for single sales model.

NOTE  THE  EACH  BOARDS  REPLACING
When the each boards are damaged, exchange the entire mounted 
board. The individual electrical parts which were mounted cannot 
be exchanged.

NOTE  THE  MAIN  BOARD  REPLACING
When the MAIN board is replaced, format it according to the fol-
lowing.

1. Firmware writing
Execute the fi rmware writing with the set assembled to the state of 
the fi gure below after the MAIN board is replaced.

Note: If the set is not assembled to the state of the fi gure below, the fi rm-

ware cannot be written.

•  The set is assembled to the state before the SVX KEY COVER 

ASSY and BUTTON SHEET are attached

Refer to the following procedures for the fi rmware writing meth-
od. 

Note 1: Confi rm the method of obtaining the “Write information tool” 

used here to the service headquarters.

Note 2: Assemble the set completely after confi rming writing the fi rm-

ware ended.

1-1. Preparation
Prepare the following tools beforehand.

•  PC (Windows XP or Windows Vista)
•  USB cable supplied to WALKMAN (WM-PORT)
•  Write information tool

1-2. Installing the write information tool
Procedure:
1.  Unzip the supplied zip fi le to get the following folders.

 • 

Write 

Informatiom1.5

 • 

LabVIEW_Runtime_Engine_82

2.  Open the folder in order of “LabVIEW_Runtime_Engine_82” 

→ “lv82rte”. Then, start up “lv82runtime”.

3.  Click “Next” button.