Section Test Mode | Sony Ericsson NWZ-A828, NWZ-A826K, NWZ-A829

NWZ-A826/A826K/A828/A828K/A829

SECTION 4 TEST MODE

Note: Information on the test mode must correspond in enough security. When the leakage has been revealed by any chance, the source of information is speciﬁed.

1. SETTING THE TEST MODE

Note: Perform the test mode in the state of 3.6 V or more in the battery voltage.

Setting method:

1.Turn the power on.

2.Press the [BACK] key for 1.5 seconds or more, the home menu is displayed.

3.Slide the [HOLD] key to set the hold on.

4.While pressing the [OPTION] key, press the key as following

order.

[v] → [v] → [V] → [V] → [B] → [b] → [v] → [V] → [v] →

[V] → [B] → [u]

5.The set reboots when the [HOLD] key is slided to set the hold off, and the color bar is displayed in the liquid crystal display.

6.Enter the test mode when the [BACK] key is pressed in the

state of step 5.

Note: The destination setting and sound pressure regulation setting can- not be executed by this test mode.

2. RELEASING THE TEST MODE

1.Display the major item selection screen.

2.Press the [v]/[V] key to select the “EXITTEST”, and press the [B] key to select the “SURE ?”.

3.Press the [u] key, turn the power off and release the test mode.

3.CONFIGURATION OF THE TEST MODE

4-1-1. Power supply voltage check

This mode is used in case power supply voltage in the state where all power supply lines are starting is checked.

Checking method:

1.Enter the test mode.

2.Press the [v]/[V] key to select the “POWER”, and press the [B] key to enter the minor item.

3.Press the [v]/[V] key to select the “VCHK”.

4.Press the [u] key, all power supply lines are started.

liquid crystal display

POWER VCHK

START

In this state, the power supply voltage of each power supply line can be conﬁrmed by measuring the voltage.

5. Press the [BACK] key, return to minor item selection screen.

Major item

<#> key		<C> key

Minor item

Major item switching: <W>/ <7> key

Minor item switching: <W>/ <7> key

4-1-2. Consumption current (audio playback) check This mode is used in case consumption current (audio playback) is checked in the state where “1 kHz 0 dBs L-ch/R-ch VOLUME: 15” audio signal is outputed.

Checking method:

1.	Enter the test mode.
2.	Press the [v]/[V] key to select the “POWER”, and press the

<V>key

Start

Automatic

Finish

Result

<#"$,> key

	[B] key to enter the minor item.
3.	Press the [v]/[V] key to select the “ACHK”.
4.	Press the [u] key, “1 kHz 0 dBs L-ch/R-ch VOLUE: 15”
	audio signal is outputed.

liquid crystal display

4.OPERATION OF THE TEST MODE 4-1. Power

liquid crystal display

MPTAPP MENU

POWER VCHK

AUDIO ACHK

VIDEO DSVCHK

OTHER CHGCHK

CLESTE BATTCHK

DAC

BLUETOOTH

SHUTDOWN

EXITTEST

POWER ACHK

1kHz 0dBs L/Rch HPOUT [ VOL: 15 ]

START

5.In this state, each time the [OPTION] key is pressed, LCD back light on/off switch is performed.

6.Press the [BACK] key, return to minor item selection screen.