Test Mode - Sony Walkman NW-HD1 Service Manual

1. OUTLINE
For the LCD display, the LCD on the main unit is shown, but the
contents of LCD display on the remote commander are same.
Operation in the test mode is performed with the main unit. A key
having no particular description in the text, indicates a main unit key.
Power supply voltage : 3.65 to 3.75 V
Volume : 24
SOUND EQ : OFF
AVLS : OFF
[HOLD] switch
: OFF
Set states : horizontal states
2. SETTING THE TEST MODE
1. Supply power to the set.
2. Switch-on the [HOLD] switch on the main unit.
3. Operate as follows.
• When use only main unit
While pressing the [MODE] key on the main unit, press the key on
the main unit as following order.
→ → →
> > . .
→ →
M m
• When use the main unit and remote commander
While pressing the [MODE] key on the main unit, press the key on
the remote commander as following order.
→ → →
> > . .
→ + →
–
4. Switch-off the [HOLD] switch on the main unit and enter the

test mode.

3. RELEASING THE TEST MODE
Press the [SET UP] key on the main unit or
commander for 1.5 seconds or more, turn off the power and release
the test mode.
4. CONFIGURATION OF THE TEST MODE
Flow of the test mode:
F/W version display
, key < key
Major item
, key < key
Minor item
Bx key
Start
Automatic
Finish
[SET UP] key
or
Result
SECTION 4
TEST MODE
→ → → →
> . > .
→ → → →
> . > .
key on the remote
x
Major item switching: key
M m
Minor item switching: key
M m
5. OPERATION OF THE TEST MODE
5-1. Power
5-1-1. Power supply voltage check
This mode is used in case power supply voltage in the state where
all power supply lines (1.2 V/1.5 V/1.8 V/2.0 V/2.4 V/3.3 V/VSTBY/
VDC) are starting is checked.
Checking method:
1. Enter the test mode.
key to display major item, and press the M m
2. Press the
,
key to select the "POWER".
LCD display
POWER
key to display minor item, and press the M m
3. Press the
,
key to select the "V CHK".
LCD display
V CHK
4. Press the key, "START" is displayed and all power supply
Bx
lines are started.
LCD display
START
5. Press the [MODE] key, "HD OFF/ON" is displayed. Each time
[MODE] key is pressed, hard disk drive power supply ON/OFF
switch is performed.
LCD display
HD OFF/ON
6. Press the [SET UP] key, return to minor item selection screen.
5-1-2. Consumption current (read state) check
This mode is used in case consumption current (read state) in the
state where the hard disk drive has booted is checked.
Checking method:
1. Enter the test mode.
key to display major item, and press the M m
2. Press the
,
key to select the "POWER".
LCD display
POWER
key to display minor item, and press the M m
3. Press the
,
key to select the "A RD".
LCD display
A RD
4. Press the key, "READY?" is displayed. In this state, Each
Bx
time [MODE] key is pressed, EL back light ON/OFF switch is
performed.
LCD display
READY?
NW-HD1
Ver 1.1
9