HITACHI 42HDX99 - SERVICE MODE

HITACHI 42HDX99 - SERVICE MODE

ADJUSTMENT PROCEDURE START-UP
The 42HDT79 42HDS69 and 42HDX99 PDP TV sets pass through adjustment procedures during the assembly process. These adjustments must be done to assure the best performance of the PDP set for the consumer. Also, after servicing, these same adjustments must be done. The adjustments are all made through the I2C bus by changing data in the Adjustment mode menu.

HOW TO GET TO ADJUSTMENT MODE
Chassis adjustment mode can be access by pressing the R/C keys MENU + MENU + 8 + SELECT to enter adjustment mode. For some parameters the only way to see them is by selecting the parameter number than pressed SELECT in order to see it; then DATA can be change if other parameter needs to change then press DOWN key then repeat the same procedure.

Other way to access this mode is by use JIG R/C code: (9C Hex). To escape from Adjustment Mode press “INPUT” key on Side panel or EXIT key of R/C to exit service adjustment mode.
CHANGING DATA AND SELECTING ADJUSTMENT CODE
When the PDP set is in adjustment mode, the cursor LEFT, RIGHT , UP,DOWN  and MENU keys of the remote control or front panel may be used as the adjustment keys.
A. Use any Hitachi remote control when making an adjustment. UP DOWN keys are used for selecting adjustment item. LEFT, RIGHT keys are used for changing data values.
MENU key is used to advance through the adjustment mode menus and pages.

B. To make a selection, use the NUMBER pad on the PDP R/C ; example : select DEVICE press 69 then SELECT the DATA shown is "EB" ; if this DATA needs to be change press the LEFT, RIGHT keys to modify, when finish press SELECT key to store the new DATA value. normal condition.
C. After finishing the necessary adjustment press the R/C EXIT key or EXIT key on the side panel. Adjustment mode is released and PDP set returns to normal condition.

MEMORY INITIALIZE
MEMORY INITIALIZE OPERATION
NOTE: The execution of this function returns the adjustment codes to the preset values, therefore, adjustment data will be lost.

Procedure
(1) Enter Adjustment mode by the method described in sub-items 1.1 and 1.2 from item 1 (“Adjustment procedure start up”).
(2) Get to the second page of Adjust Mode by pressing remote control “Menu” key once, or with either the R/C or front panel UP,DOWN  cursor keys several times.
(3) Select MEMORY INIT adjust code.
(4) Activate MEMORY INIT by pressing  cursor RIGHT key for more than 3 seconds.
(5) Check the following process for initialization operation.

Process of Memory Initialize operation.
A.A screen is be colored cyan when MEMORY INIT start.
B.A screen is be colored green when MEMORY INIT finish normally.
C.A screen is be colored red when MEMORY INIT finish abnormally.

(8) When PDP turns ON , it will tune CH03 this is the complete operation of Memory Initialize process.
(6) Do not unplug from AC outlet until this operation is complete and do not perform any key operation either, after this operation each factory setting and
all adjust mode data should reset to delivery settings automatically.
(7) After Memory Initialize, it should be unplug AC cord. Unplug and plug AC cord and then all settings and data are updated.

WHITE BALANCE ADJUSTMENTS
General Notes for White Balance
(1) If the incident illumination is more than 20 lux, change the environment (location, lighting, etc.) and ensure it to be less than 20 lux.
(2) At least one of the color drive codes must stay at its maximum value, FFH.
VIDEO COLOR TEMPERATURE ADJUSTMENT (HIGH)
Preparation
(1) Set the output of signal generator to white raster. (Ratio:100%)
(2) Component signal 42” 55” Video level: 0.700Vp-p 0.280Vp-p SYNC: 0.300Vp-p 0.286Vp-p Set-up level: 0V 0V
(3) Input white raster signal into COMPONENT input terminal of the PDP set.
(4) Set user control to Day mode. (Picture Mode)
(5) Confirm that the mode is set as “Factory Setting Mode”.
(6) Aspect:  Video: Expanded
Adjustment
(1) Perform the following adjustment with the remote control.
(2) Set the CRT color analyzer (CA-100) at the center of the panel.
(3) Set color temperature to “HIGH”.
(4) Ensure that Adjustment R/G/B DRIVE (HIGH) are all set as FF.
(5) After receiving White raster signal, step down the two (or one) among Adjustment R/G/B DRIVE (HIGH) and adjust the value.

Remarks
(1) Color temperature should be adjusted under the condition in which the screen is the brightest, thus the initial value for adjustment is set to its maximum.
(2) Adjustment is made by reducing brightness only. Reduce a bright color for adjustment.
(3) Video color temperature & Adjustment No. are the same, but addresses in the memory are different, thus there’s no problem.

VIDEO COLOR TEMPERATURE ADJUSTMENT (STD)
Preparation
(1) Same as “Video Color Temperature adjustment: (HIGH)”. For 55” video level changes to 0.700Vp-p.
Adjustment
(1) Perform the following adjustment with the remote control.
(2) Set the CRT color analyzer (CA-100) at the center of the panel.
(3) Set color temperature to “STD”.
(4) Ensure that Adjustment R/G/B DRIVE (STD) are all set as FF.
(5) After receiving White raster signal, step down the two (or one) among Adjustment R/B/G DRIVE (STD) and adjust the value.

VIDEO COLOR TEMPERATURE ADJUSTMENT (B/W) (Only for HDX models)
Preparation
(1) Same as “Video Color Temperature adjustment: (HIGH)”. For 55” video level changes to 0.700Vp-p.
Adjustment
(1) Perform the following adjustment with the remote control.
(2) Set the CRT color analyzer (CA-100) at the center of the panel.
(3) Ensure that Adjustment R/G/B DRIVE (B/W) are all set as FF.
(4) After receiving White Raster signal, step down the two (or one) among Adjustment R/B/G DRIVE (B/W) and adjust the value.

DIGITAL MAIN CHECK
SYSTEM SOFTWARE VERSION CHECK
(1) Press Menu button on the R/C or control panel.
(2) Enter the SETUP options, and then look for UPGRADES option.
(3) The Main software version will be display V0100.0000

(4) If this version needs to be change for a design improvement or failure, please select the Upgrade Now button.

(5) The upgrading process begin by filling  bar, when finish the message will say, “Upgrade complete …” when this appear unplug the TV from the AC line outlet to complete the process.
(6) Now plug again the TV and verify the new software version.
(7) The Main software version will display the latest version issue by design.

NOTE:
(1) A Service Bulletin will be sent when a new version is issued officially to the Service Department every time the soft ware version needs to be modified.
(2) In case that the upgrade fails or when a CARD is inserted with new version and can’t upgrade ; please perform the
FACTORY RESET process to the TV, then try upgrading again.