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For U.S.A., Canada
& Europe model




Ver. 2
SERVICE MANUAL
MODEL DN-V750/V755
NETWORK AUDIO VIDEO PLAYER




For purposes of improvement, specifications and
design are subject to change without notice.



Please use this service manual with referring to the
operating instructions without fail.


Some illustrations using in this service manual are
slightly different from the actual set.




Professional business company
JAPAN


X0221V.02 DE/CDM 0412
DN-V750/V755



SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.

LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.




500V


1M


(1)




(2)




(1)

(2)




2
DN-V750/V755


BLOCK DIAGRAM




3
DN-V750/V755


ADJUSTMENT (for DN-V750 model)
1. Connect the terminal as shown fig. 1.
2. Set the CF card (CF-96-27=adjustment 2) to CARD SLOT.
3. Turn OFF the 1 and 2 Dip switch on the back panel.
4. Turn the power switch ON.
5. VIDEO mode
(1) Press the "SELECT" button about for 2 second.
(2) Until the display appear at the upper right of a monitor.
(3) Set "VIDEO", "AUDIO", "PICTURE", "SCRIPT" to "VIDEO".
6. Display "Color bar".
(1) Press the "STOP" button, pressing the "SELECT" button.
(2) Until the display appear at the upper right of a monitor.
(3) Press the "STOP" button to 1, pressing the "SELECT" button.
(4) Press the "PLAY" button and quickly press the "PAUSE" button.
Display "Color bar" with a still picture.
7. Adjusting the output of Composite.
Adjust "980mVP-P