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2

Specifications ............................................................................... 1

....................................................... 3

.......................................................................... 9

3-1. Case ............................................................................... 11
3-2. Battery, Nickel Hydrogen ............................................. 12
3-3. Main Board ................................................................... 12

4-1. Block Diagrams ............................................................ 13
4-2. Printed Wiring Boards (Main Section) ......................... 14
4-3. Schematic Diagram (Main Section (1/2)) ..................... 15
4-4. Schematic Diagram (Main Section (2/2)) ..................... 16

5-1. Main Section ................................................................. 19
5-2. Case Section .................................................................. 20

....................................... 21

• Keep the temperature of the soldering iron around 270

°

C during

repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or

unsoldering.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

• Replacement of TMS320DA150GGU120 (IC601) used in the set requires

a special tool.

z

Boards requiring use of unleaded solder are printed with the
lead-free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed
with the lead free mark due to their particular size.)

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40

°

C higher

than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to
be applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set
to about 350

°

C.

Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to
flow) than ordinary solder so use caution not to let solder
bridges occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder
may also be added to ordinary solder.

z

Use ISO9660 Level 1 format.

3

This document describes the “operation check for inspection (Test mode)” and “adjustment after board replacement for repair”.
In performing these works, connect this set to the PC via a USB cable and use the following tool.

1. In performing the work, the set should be in a complete state (all components assembled).
2. Install the “OpenMG Jukebox” and “WMP7 Plug-in” (CD-ROM) in the PC in advance.
3. Do not start up other applications in the PC.
4. This set has the Test mode, and various functions can be checked by using exclusive application (Service Tool) on the PC side.
5. Be sure to replace the MAIN board, if any part listed in Table 1-1 is faulty.
6. The data in Table 1-2 have been written to the MAIN board.
7. In repairing other than above parts, repair as usual.

Ref. No

1

Tool name

Service tool 9140 (FD)

Part code

J-2507-037-1

Application

Board check (Test mode) and readjustment after board replacement

Board name

MAIN board

Ref. No

IC601, IC602, IC603, IC901

Board name

MAIN board

Stored date

Music date, Equalizer initial values, CODEC programs, and ID/IK codes

1. Be sure to remove the battery from this set. (The power is supplied via USB cable) Operating the set in the Test mode with the battery

loaded could clear necessary information.

2. If operation check was performed for inspection, execute “Play Info Initialize” in qd (see page 7) to return respective functions to

initial positions (see Table 1-5 on page 7). In such a case, record current position of each function before executing “Play Info
Initialize” in qd , if necessary.

4

Preparation:
1. Make sure that no battery is loaded in the set.
2. Start up the test mode “appllo_service. exe” of the service tool (J-2507-037-1 ) from the PC, and check that the following screen
    appears.

3. Connect PC to this set with a USB cable. Check that the block 1 of the following screen “open”, and “1PC” is displayed on

the LCD of the set. (The block 1 will “close” if the set is disconnected again) At this time, a sine wave is outputted from the
headphone. Also, the model name is displayed in the block qd of the screen.

Note: If the block 1 does not “open”, the circuits in MAIN board will be faulty. Audio signals are outputted from

    the reference signal in  the DSP of the set.

5

Clicking the UP or Down button in block 2 of the screen allows you to check with various output frequencies. Also, clicking the UP
or Down button in block 3 can check variations of volume. Clicking the L, Stereo, R, or Mute button in block 4 can change audio
output status.

Connect PC to this set with a USB cable, and the threshold values of battery residual capacity (voltage-converted values) written to the
set at the shipment are displayed in the block 5 .
Check that the displayed values are same as listed in Table 1-3.

Clicking FULL (full lit), COL1 (column 1), COL2 (column 2), or OFF (full off) in block 8 results in all ON, column 1 ON, column 2
ON, or all OFF of the LCD on the set respectively.

The CODEC programs and their versions written to the set can be checked. (block 9 )
The CODEC programs written to the set at the shipment are “MP3”, “ATRAC3”, and “WMA” and their versions are as listed below.
(Versions will vary if updated)

Capacity 1 

t2

1.25V

 368

Capacity 2 

t3

1.27V

 400

Capacity 3 

t4

1.29V

432

OFF

1.00V

 320

Condition

Voltage set value

Converted value (ref.)

Name

MP3

AT3

blank

blank

Program No.

 CODEC1

CODEC2

CODEC3

CODEC4

Version

80

80

0

0