Sunday, October 25, 2015

HITACHI UT42X902 - UT42V702 SERVICE MODE AND MEMORY INITIALIZATION

HITACHI UT42X902 - UT42V702 

SERVICE MODE AND MEMORY INITIALIZATION 

How to get to the Service Mode Menu
The Service Mode Menu can be reached by following the next sequence:
1. With TV in the off condition (with Main Power Off)
a) Press and hold Menu key of the bottom control panel, while holding the menu key, press and release the master power button.
b) Keep pressing the menu key until the Service Menu appears on screen, release menu key.
2. To exit the Service Mode press [MENU] key of the remote control or the UT monitor, the user menu OSD will appear.
When the UT monitor is in the Service Mode, use the remote control cursor keys , , , to make the adjustments. The bottom control panel in the UT monitor can also be used for making the adjustments.
A. Use the Remote Control: 
The , , keys are used for selecting the adjustment item (in the same page). The , keys are used for changing the data values. Use the VOL UP/DWN remote control button to scroll thru the different Service Menu pages. The “OK” button is equal to “Enter” key.
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 equivalent 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.
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
EEPROM ALL INIT Procedure:
(1) Enter Service Mode.
(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 EEPROM 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.
EEPROM RENEW Procedure:
There are two methods.
FIRST METHOD.
(1) Enter Service Mode.
(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.
VIDEO ADJUSTMENT
The next adjustments are related with the picture quality. Special care must be put.
RGB amplitude adjustment (PC D-SUB input)
Adjustment preparations
(1) Turn on the UT monitor, allow a 20 minutes heat-run before 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 standard)
Adjustment procedures
(1) Receive the PC adjustment signal.
(2) Select the adjustment item no. 658 of service adjustment menu and push the OK button during 2 seconds or more. The automatic adjustment will start.
(3) When the on screen display appears again, the automatic adjustment is finished.
VIDEO COLOR TEMPERATURE ADJUSTMENT
The next adjustments are for setting the color coordinates or color temperature of the picture.
Cool mode.
Adjustment preparations
(1) Adjustment signal: HDMI 1080i Signal pattern: White raster. Video level: 90%.
(2) Picture settings: Factory setting, check that the mode is set as Factory shipping conditions.
Picture mode: Dynamic.
(3) The color analizer (CA-210) should be verified by a spectrum radiation brightness meter such as CS-1000 or standard LCD.
(4) Set the aspect to full mode.
(5) Set the color analizer (CA-210) at the center of the panel.
Adjustment procedures
(1) Enter the Service mode.
(2) Check that the adjustment items no. 0, no. 1 and no. 2 of the Service Mode menu have the next initial values. If the initial values are different, set them as the following data.
No. 0 = 230
No. 1 = 230
No. 2 = 240
(3) Receive the white raster signal. Step down two (or only one) of either of the R DRV_COOL, G DRV_COOL or B DRV_COOL adjustment parameters and change to the following values
x = 0.266 ± 0.005
y = 0.270 ± 0.005

(NOTE: At least one of the adjustment parameters should remain in the initial data value).
Normal Mode.
Adjustment preparations
(1) Adjustment signal: HDMI 1080i Signal pattern: White raster Video level: 90%
(2) Picture settings: Factory setting. Check that the mode is set as the factory shipping conditions. Picture mode: Dynamic.
(3) The color analyzer (CA-210) should be verified by a spectrum radiation brightness meter such as the CS-1000 or standard LCD.
(4) Set aspect to full mode.
(5) Set the color analyzer (CA-210) at the center of the panel.

Adjustment procedures.
(1) Enter the Service mode.
(2) Check that the initial data of the adjustment items no. 3, 4 and 5 are in the following values. If their initial values are different, change them as shown.
No. 3 = 224
No. 4 = 224
No. 5 = 224
(3) Receive the white raster signal. And decrease the value of any two (or only one) of the R DRV_NORMAL, G DRV_ NORMAL or B DRV_NORMAL adjustment parameters in order to get the X/Y coordinates to the following values.
x = 0.285 ± 0.005
y = 0.293 ± 0.005
9300K ± 0MPCD

Warm mode.
Adjustment preparations.
(1) Adjustment signal: HDMI 1080i Signal pattern: White raster Video level: 90%
(2) Picture settings: Factory shipping conditions. Picture mode: Dynamic.
(3) The color analyzer (CA-210) should be verified by a spectrum radiation brightness meter such as the CS-1000 or an LCD standard.
(4) Set the aspect to full mode.
(5) Set the color analyzer (CA-210) at the center of the panel.
(6) Adjustment of color temperature cool mode and normal mode should be finished.

Adjustment procedures.
(1) Enter the Service.
(2) Check that the initial data of the adjustment items no. 6, 7 and 8 are in the below shown values. If they are different, change them to...
No. 6 = 224
No. 7 = 224
No. 8 = 224
(3) Receive the white raster signal. And decrease one or two of the parameters R DRV_WARM, G DRV_WARM, or B DRV_WARM in order to meet the X/Y coordinates with the below values.
x = 0.313 ± 0.005
y = 0.329 ± 0.005
6500K ± 6.5MPCD

NOTE: At least one of the parameters should remain in the initial value
Another procedure to set to Factory shipping conditions
Adjustment procedures
(1) Turn off the power (Power indicator: Off)
(2) Push the
key of the bottom control panel and turn on the power of the UT monitor while keeping the up cursor key pushed for more than 5 seconds.
(3) Set the adjustment item no. 630 to data value 6.
How to get to Burn-in mode
This mode displays the test patterns of some single color raster in turn. These signals are from built-in generator of panel. So it can be presumed that maybe the panel has some trouble when the screen of Burn-in mode is abnormal.
Using the remote control with the set turned on can activate the mode.
(1) Set the service adjustment mode.
(2) Change No.646 from “0” to “1”. After a few second, appear the burn-in picture.
(3) To escape from this mode, change No.646 from “1” to “0”.