HITACHI 32HDT50/55 - 42HDT50/55 SERVICE MODE
PLASMA DISPLAY PANEL
SERVICE MODE
HOW TO GET TO ADJUSTMENT MODE
Chassis adjustment can be done by using the AVC50 front control panel buttons with PDP set turned off. Press “POWER” and “INPUT” keys at the same time, and hold for more than 3 seconds. Release the “POWER” button first and then immediately the “INPUT” button.
Chassis adjustment can be done by using the AVC50 front control panel buttons with PDP set turned off. Press “POWER” and “INPUT” keys at the same time, and hold for more than 3 seconds. Release the “POWER” button first and then immediately the “INPUT” button.
To escape from Adjustment Mode press “INPUT”
key to exit service adjustment mode.
CHANGING DATA AND SELECTING
ADJUSTMENT CODE
When the PDP set is in adjustment mode, the cursor RIGHT AND LEFT , UP AND 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.
A. Use any Hitachi remote control when making an adjustment.
UP AND DOWN keys are used for selecting adjustment code.
RIGHT AND LEFT 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 CURSOR keys on
the AVC front control panel or the Remote Control.
C. After finishing the necessary adjustment press the R/C EXIT key or EXIT key on the front panel. Adjustment mode is released and PDP set returns to normal condition.
C. After finishing the necessary adjustment press the R/C EXIT key or EXIT key on the front 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.
There are two procedures for memory initialize, this is
the first.
Procedure 1
(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 AND DOWN cursor keys several times.
(3) Select MEMORY INIT adjust code.
(4) Activate MEMORY INIT by pressing RIGHT cursor key for more than 3 seconds.
(5) Check that the receiving channel goes to CH03. Unit is set to preset values.
MEMORY INITIALIZE OPERATION
NOTE: The execution of this function returns the adjustment codes to the preset values, therefore,
adjustment data will be lost.
There are two procedures for memory initialize, this is
the first.
Procedure 1
(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 AND DOWN cursor keys several times.
(3) Select MEMORY INIT adjust code.
(4) Activate MEMORY INIT by pressing RIGHT cursor key for more than 3 seconds.
(5) Check that the receiving channel goes to CH03. Unit is set to preset values.
Procedure 2
(1) Short PRST connector on the AVC AV PWB and check that the set return to delivery settings (CH 03).
(2) Do not unplug from AC outlet until this operation is completed and do not perform any key operation either. After this operation, each factory setting and adjust mode data should reset to delivery setting automatically.
(1) Short PRST connector on the AVC AV PWB and check that the set return to delivery settings (CH 03).
(2) Do not unplug from AC outlet until this operation is completed and do not perform any key operation either. After this operation, each factory setting and adjust mode data should reset to delivery setting automatically.
AMPLITUDE ADJUSTMENT (AVC CENTER)
RGB AMPLITUDE ADJUSTMENT
Preparation
(1) Select Video -Picture Mode - Day – Reset. Set Reset of Video menu when PC input is selected.
(2) Input 525p(480p) of RGB amplitude adj. signal into INPUT1(Component) input.
(3) Input VGA(60Hz) RGB amplitude adj. signal into RGB input
RGB AMPLITUDE ADJUSTMENT
Preparation
(1) Select Video -Picture Mode - Day – Reset. Set Reset of Video menu when PC input is selected.
(2) Input 525p(480p) of RGB amplitude adj. signal into INPUT1(Component) input.
(3) Input VGA(60Hz) RGB amplitude adj. signal into RGB input
Note: Perform pre heat-run for more than 30
min. before
adjusting.
Adjustment
(1) Receive 525p(480p) signal (Aspect 16:9 Standard).
(2) Select RGB(480p)í of Service Adj. menu. Press right cursor key (RIGHT ) over 2 seconds and have it perform automatic adjustment. When it ís completed, Auto Adjusting on the screen will disappear.
(3) Receive PC signal (VGA(60Hz)), (Aspect Full).
(4) Similarly as (2), select RGB(PC)í of Service Adj. Menu, by pressing SEL button. Press RIGHT for 2 sec. to do automatic adjustment.
adjusting.
Adjustment
(1) Receive 525p(480p) signal (Aspect 16:9 Standard).
(2) Select RGB(480p)í of Service Adj. menu. Press right cursor key (RIGHT ) over 2 seconds and have it perform automatic adjustment. When it ís completed, Auto Adjusting on the screen will disappear.
(3) Receive PC signal (VGA(60Hz)), (Aspect Full).
(4) Similarly as (2), select RGB(PC)í of Service Adj. Menu, by pressing SEL button. Press RIGHT for 2 sec. to do automatic adjustment.
SUB-CONTRAST ADJUSTMENT
Preparation
(1) Receive Sub-contrast adjustment signal (Fig. 1).
Adjustment
(1) Select SUB CONTRAST of Service Adj. Menu. Press RIGHT for over 2 seconds and have it perform automatic adjustment. When it ís completed, Auto Adjusting on the screen will be disappeared.
Preparation
(1) Receive Sub-contrast adjustment signal (Fig. 1).
Adjustment
(1) Select SUB CONTRAST of Service Adj. Menu. Press RIGHT for over 2 seconds and have it perform automatic adjustment. When it ís completed, Auto Adjusting on the screen will be disappeared.
BRIGHTNESS CHECK
Preparation
(1) Start checking 20 minutes or more after the power is turned ON.
(2) Receive the color bar signal.
(3) The vertical incident illumination on the screen should be 20 lux or less.
(4) Picture Format is 16:9 standard mode.
(5) Select Day mode and reset.
Preparation
(1) Start checking 20 minutes or more after the power is turned ON.
(2) Receive the color bar signal.
(3) The vertical incident illumination on the screen should be 20 lux or less.
(4) Picture Format is 16:9 standard mode.
(5) Select Day mode and reset.
Vs, Va voltage adjustment
Adjustment part::VR51
-Preparation
1.Turn on the set and perform pre-heat run more than 1min.with snow noize screen.
2.Receive full black pattern (blanking level) signal (or Video No signal; in this case, it will be autmatically turned off after a few seconds because of power save function).
3.Connect voltmeter leads to the Vs or Va and GND test points on power unit. (Measurement error of voltmeter should be Less than 0.02V)
-Adjustment
(1)Turn VsADJ(VR51) to adjust Vs voltage to be within ± 0.1V of the value specified in the label on the panel.
(2)Turn VaADJ(VR51) to adjust Vs voltage to be within ± 0.2V of the value specified in the label on the panel.
(3)Reconfirm that Vs voltage remains within± 0.1V of the value.Readjust if It ís outside the margin.
WHITE BALANCE ADJUSTMENTS
(PDP MONITOR)
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.
(3) WBC code must be 00 during W/B adjustment.
Adjustment part::VR51
-Preparation
1.Turn on the set and perform pre-heat run more than 1min.with snow noize screen.
2.Receive full black pattern (blanking level) signal (or Video No signal; in this case, it will be autmatically turned off after a few seconds because of power save function).
3.Connect voltmeter leads to the Vs or Va and GND test points on power unit. (Measurement error of voltmeter should be Less than 0.02V)
-Adjustment
(1)Turn VsADJ(VR51) to adjust Vs voltage to be within ± 0.1V of the value specified in the label on the panel.
(2)Turn VaADJ(VR51) to adjust Vs voltage to be within ± 0.2V of the value specified in the label on the panel.
(3)Reconfirm that Vs voltage remains within± 0.1V of the value.Readjust if It ís outside the margin.
WHITE BALANCE ADJUSTMENTS
(PDP MONITOR)
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.
(3) WBC code must be 00 during W/B adjustment.
VIDEO COLOR TEMPERATURE ADJUSTMENT (STD)
Preparation
(1) Same as ìVideo Color Temperature adjustment: (HIGH).
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)
Preparation
(1) Same as ìVideo Color Temperature adjustment: (HIGH).
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)
Remarks
(1) Same as Video Color Temperature adjustment (HIGH)
FACTORY RESET(1) Same as Video Color Temperature adjustment (HIGH)
After all of the adjustments of main chassis are finished, perform FACTORY RESET.
(1) Enter Adjustment Mode by the method described in sub-items 1-1 and 1-2 from page 30. (Adjustment Procedure Start-up).
(2) From the first menu in Adjustment Mode, select FACT RESET adjustment code.
(3) Activate FACT RESET by pressing ìRightî cursor
(4) Check that the receiving channel goes to CH03. Unit is set to factory settings.
