HBD-DZ340, HBD-DZ340K, HBD-DZ640K, HBD-DZ740 - Sony Audio Service Manual (repair manual). Page 17

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HBD-DZ340/DZ340K/DZ640K/DZ740
17
SECTION  3
TEST  MODE

Note: Incorrect operations may be performed if the test mode is not 
entered properly.
 
In this case, press the [?/1] button to turn the power off, and 
retry to enter the test mode.
1. Cold 
Reset
•  The cold reset clears all data including preset data stored 
in the RAM to initial conditions. Execute this mode when 
returning the set to the customers.

Procedure:
1.  Press the [
?/1
] button to turn the power on. 
2.  Press three buttons [
N
], [FUNCTION] and [
?/1
] simultane-
ously.
3.  When this button is operated, display as “RESET” for a while 
and all of the settings are reset. 
2.  Panel Test Mode
•  This mode is used to check the software version, FL and 
KEY.

2-1.  Display Test Mode
Procedure:
1.  Press the [
?/1
] button to turn the power on.
2.  While pressing the [
x
] and the [
N
] buttons simultaneously, 
turn the [VOLUME] control in the direction of (+).
3.  When the display test mode is activated, all segments are 
turned on. When the mode in, “REC TO USB” and “VOL-
UME ILLUMINATION” is turn off.
4.   To exit from this mode, while pressing the [
x
] and the [
N
] 
buttons simultaneously, turn the [VOLUME] control in the di-
rection of (+).

2-2.  Version Test Mode
Procedure:
1.  When the display test mode is activated, press the [FUNC-
TION] button and the message “DH1” (DZ340), “DH2K” 
(DZ340K), “DH4K” (DZ640K), “DH4” (DZ740) are dis-
played, the version test mode is activated.
2.  Whenever the [FUNCTION] button is pressed, the display 
changes in the following order.
 
   
“DH8” (Model name) 
t “NA
*1
” (Destination) 
t MC Version 
 
   *1: NA changes depending on destination.
3.  Press the [REC TO USB] button when the MC version is on 
display. The date of software production is displayed.
4.  Press the [REC TO USB] button again and the version is dis-
played.
5.  To exit from this mode, while pressing the [
x
] and the [
N
] 
buttons simultaneously, turn the [VOLUME] control in the di-
rection of (+).

2-3.  FL Pattern Test Mode
Procedure:
1.  When the display test mode is activated, press the [
Z
] button, 
to select the FL pattern test mode. When the FL pattern test 
mode, half segments of FL display and “REC TO USB” are 
turn on.
2. Press 
the 
[
Z
] button, half segments of FL display and “REC 
TO USB” is turned off.
3.  To exit from this mode, while pressing the [
x
] and the [
N
] 
buttons simultaneously, turn the [VOLUME] control in the di-
rection of (+).

2-4.  Key Test Mode
Procedure:
1.  When the display test mode is activated, press the [
?/1
] but-
ton, to select the key test mode.
2.  To enter the KEY test mode, the fl uorescent indicator displays 
“K0 V0”. Each time an another button is pressed, “KEY” value 
increases. However, once a button is pressed, it is no longer 
taken into account. When all keys are pressed correctly, “K8 
V0” is displayed.
3.  When the [VOLUME] control is turned in the direction of (+), 
“V0” is changed to “V1”, then ... “V9”.
 
When the [VOLUME] control is turned in the direction of (–), 
“V0” is changed to “V9”, then ... “V1”.
4.   To exit from this mode, while pressing the [
x
] and the [
N
] 
buttons simultaneously, turn the [VOLUME] control in the di-
rection of (+).
3.  Disc Tray Lock
•  The disc tray lock function for the antitheft of an demonstra-
tion disc in the store is equipped.

Setting Procedure :
1.  Press the [
?/1
] button to turn the set on.
2.  Press the [FUNCTION] button to set DVD function.
3.  Insert a disc.
4.  Press the [
x
] button and the [
Z
] button simultaneously for fi ve 
seconds.
5.  The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1.  Press the [
x
] button and the [
Z
] button simultaneously for fi ve 
seconds again.
2.  The message “UNLOCKED” is displayed and the tray is un-
locked.

Note: When “LOCKED” is displayed, the tray lock is not released by 
turning power on/off with the [?/1] button.
4.  DVD Version Display
•  The STR and DVD microprocessor versions are displayed.

Procedure:
1.   Press the [
?/1
] button to turn the set on.
2.   Press the [
N
] button and the [
?/1
] button simultaneously for 
three seconds. SC version display is presented.
3.   Pressing the [FUNCTION] button presents a DV version dis-
play. Pressing the [FUNCTION] button again returns to the SC 
version display.
4.   To exit from this mode, press any button other than the [FUNC-
TION] button.
5. Product 
Out
•  This mode moves the optical pick-up to the position durable 
to vibration and clears all data including preset data stored 
in the STR RAM to initial conditions. Use this mode when 
returning the set to the customer after repair.

Procedure:
1.  Press the [
?/1
] button to turn the power on.
2.  Press the [FUNCTION] button to set the function “DVD/CD”.
3.  Remove all discs, and then press three buttons [
x
], [
Z
] and 
turn the [VOLUME] control in the direction of (+).
4.  Displayed to message “SERVICE” on the fl uorescent indica-
tor tube when pressing in turn the [4] 
t [DVD MENU] t 
[CLEAR] buttons on the remote commander.
5.  After the “STANDBY” blinking display fi nishes, the message  
“LOCKED” 
h “UNPLUG” is displayed on the fl uorescent 
indicator tube disconnect the AC power plug, then the product 
out mode is set.
 
The STR RAM initialization is executed upon a next power-on 
after the power is turned off.
Ver. 1.2
Display
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