Hitachi UT42V702/D8MW, Service Manual

Page: 17 / 90

D8MW
TABLE OF CONTENTS
16
B. Use the Control Panel (located at the bottom):
Menu/Exit button is for calling the OSD menu or for exiting
such menu or any other OSD.
Input/Select button is for changing the displayed input or,
when some OSD is beeing displayed, to be able to select
the highlighted option.
◄
Vol - button is for reducing the audio volume or equiva
-
lent to the Left cursor key when an adjustment value is
highlighted.
►
Vol + button is for increasing the audio volume or
equivalent to the Right cursor key when an adjustment
value is highlighted.
▲ button is same as the R/C Up cursor button.
▼ button is same as the R/C Down cursor button.
The next figures show the labels of the bottom control panel
and a bottom view of the buttons.
2. MEMORY INITIALIZE
The memory initialize operation is to clear the contents of
the data memory and to set all adjustment values to initial
default.
CAREFUL: The data that will be lost is shown in the section
no. “2.3 Memory initialize affected adjustments”.
2.1 EEPROM ALL INIT Procedure:
(1) Enter Service Mode by the procedure in section 1.1.
(2) Select adjustment item no. 657 and push the OK button
(the remote control must be set in normal TV mode).
The picture will disappear, and the initialization of the EE-
PROM will start.
(3) About 2 seconds later, the initialization process will finish
and the picture will appear again. NOTE: Do not turn of the
power until the picture appears again.
(4) Set the adjustment item no. 630 to data value 6.
2.2 EEPROM RENEW Procedure:
There are two methods.
FIRST METHOD.
(1) Enter Service Mode by the procedure in section 1.1.
(2) Change the data value of the adjustment item no. 659
from “0” to “1”.
(3) Push the OK button in the remote control. The picture will
disappear indicating that the initialization of the EEPROM is
started.
(4) About 2 seconds later, the initialization will finish and the
picture will appear again. Do not turn of the power until the
picture appears again.
(5) Set the adjustment item no. 630 to data value 6.
SECOND METHOD.
(1) Turn off the monitor by side panel power switch.
(2) Turn on the side panel power switch while keeping
pushed the up cursor key of the bottom control panel for
more than 5 seconds.
Confirm the settings are in factory shipping conditions (refer
to section 5.1 of this manual).
2.3 Memory initialize affected adjustments:
The next table shows the adjustment items which are affected
by the Memory Initialize EEPROM ALL INIT operation and
EEPROM RENEW operation.
Adjustment ALL INIT RENEW
White balance Reset Not reset
Amplitude Reset Not reset
Item no. 657 Reset Not reset
3. VIDEO ADJUSTMENT
The next adjustments are related with the picture quality.
Special care must be put.
3.1 RGB amplitude adjustment (PC D-SUB input)
Adjustment preparations
(1) Turn on the UT monitor, allow a 20 minutes heat-run be-
fore beginning the adjustment.
(2) Input the PC VGA[60Hz] adjustment signal into the PC
D-SUB input terminal.
(3) The adjustment signal pattern is an 8 color bar. The black
should be at the pedestal level.
(4) White level amplitude = 700 mV (100% of signal stan-
dard).
INPUT/OK
>PS<
PH43303
INPUT (AV4)
AUDIO
VIDEO
S-VIDEO
INPUT (HDMI 3)
R L/MONO
VOL MENU/EXIT