Hitachi 26ld8000ta Service Manual
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![Page 6
6
3..Component names
¾ [Main unit]
Control panel
z An Adjustment buttons are located on the top of
the control panel
z Indications for each buttons function can be found
on the inside of the control panel cover.
1. SUB-POWER 4. VOL X 7.MENU
2. PROGRAM S
4. RIGHTX 7.ENTER
2. UP S 5. VOL W
3. PROGRAM T
5. LEFT W
3. DOWN T 6. INPUT Normal Button Action
6.EXIT Button Action when MENU engaged
The main power switch is located at the right
side of the back.](http://img.usermanuals.tech/thumb/33/53687/w64_hitachi_26ld8000ta-service-manual-5.png "Page 6
6
3..Component names
¾ [Main unit]
Control panel
z An Adjustment buttons are located on the top of
the control panel
z Indications for each buttons function can be found
on the inside of the control panel cover.
1. SUB-POWER 4. VOL X 7.MENU
2. PROGRAM S
4. RIGHTX 7.ENTER
2. UP S 5. VOL W
3. PROGRAM T
5. LEFT W
3. DOWN T 6. INPUT Normal Button Action
6.EXIT Button Action when MENU engaged
The main power switch is located at the right
side of the back.")
![Page 7
7
¾ [Remote Control]](http://img.usermanuals.tech/thumb/33/53687/w64_hitachi_26ld8000ta-service-manual-6.png "Page 7
7
¾ [Remote Control]")
11 Menu Function Description Video Picture ModeOSD menu video mode default setting Picture Display Contrast adjustment ( Back- end ) Brightness Display Brightness adjustment ( Back- end ) Tint Display Hue adjustment ( Back- end ) Color Display Saturation adjustment ( Back- end ) Detail Display Sharpness adjustment ( Back- end ) Backlight LCD backlight control ( Back- end ) Color Temperature Color temperature default setting ( High or Low ) ADC ADC Gain - Ronly ADC Gain - GADC input signal gain adjustment ( G/Y ) , For D1 ~ D4 and PC only ADC Gain - Bnly TCD3 TCD3 Con. Video decoder contrast adjustment ( Front- end ) TCD3 Bri. TCD3 Hue Video decoder Hue adjustment ( Front- end ) TCD3 Sat. TCD3 Sat. YC Delay Video decoder YC delay adjustment ( Front- end ) Peaking Range Ypeak = Y + YH * (peak_gain/peak_range)where Y is the luma and YH is the high frequency luma only Peaking Gain Peaking Enable Scalar Scalar Con - R ) Output R = (( 'Output R + (Scalar Off-R)) * (Scalar Con-R) + (Scalar Bri-R) Scalar Con - G Output G contrast factor adustment ( color temperature function ) Output G = (( 'Output G + (Scalar Off-G)) * (Scalar Con-G) + (Scalar Bri-G) Scalar Con - B n ) Output B = (( 'Output B + (Scalar Off-B)) * (Scalar Con-B) + (Scalar Bri-B) Scalar Bri - ROutput R brightness factor adustment ( color temperature function ) Scalar Bri - GOutput G brightness factor adustment ( color temperature function )
12 Scalar Bri - BOutput B brightness factor adustment ( color temperature function ) Scalar Off - ROutput R offset factor adustment ( color temperature function ) Scalar Off - GOutput G offset factor adustment ( color temperature function ) Scalar Off - BOutput B offset factor adustment ( color temperature function ) Display Disp MP BL end ) , OSD sharpness adjustment item HSharp LP nd ) Hsharp HP end ) , OSD sharpness adjustment item Vsharp Display Vertical sharpness adjustment ( Back- end ) Black Ext. Start Black stretch start-point control factor. Higher value means more black stretch ( Back- end ) Black Ext. Gain1 Black stretch gain1 Black Ext. Gain2 Black stretch gain2 U Delay Display U delay ( comparing with Y ) V Delay Display Y delay ( comparing with V ) Color Process Skin Range Low Skin color adjustment active range low Skin Range High Skin color adjustment active range high Skin Gain LowSkin color adjustment gain of range low Skin Gain High Skin color adjustment gain of range high Skin Color Enable Skin color adjustment function enable Green Str. Angle Green stretch active range ( UV domain green color active angle ) Green Str. Gain Green stretch gain Green Str. Enable Green stretch function enable Blue ThresholdBlue add function active threshold Blue Circle Range Blue add function active range Blue Add Blue add function enable
13 Enable Blue Gain Blue add gain z COLOR TEMPERATURE ADJUSTMENTS Following the procedures to make the color temperature adjustments. Note that a colorimetry meter (such as a Minolta CA-210) is require d to measure the actual screen color temperature. Low : x=0.301 +/- 0.01, y=0.314 +/- 0.01 = Color Temp.: 7500K High : x=0.266 +/- 0.01, y=0.264 +/- 0.01 = Color Temp.: 15000K 5.2 Firmware update This model has a Debbug Mode, where the technician can debbug and update the firmware. Preliminary 1.To access the Bebbug Mode, the TV must be running. Procedure 2. Press and hold the #2 and #5 button (PROGRAM S and VOLUME T). 3. After both buttons have been held down for five (5) seconds, then release the #2 and #5 button. 4. Click IAPWriter.EXE 5. Following window will be shown after IAPWriter.EXE is executed.
15 8. Click Write Device icon 9. IAP is finished while following massage is shown. 10. After IAP is done, please disconnect and reconnect AC power switch and do initialization.
16
5.3 Initialization
This model has a Initialization Mode, where the technician can initial the EEPROM.
Preliminary
1.To access the Bebbug Mode, the TV must be
running.
Procedure
① ②
6. Press and hold the #4 and #5 button (VOLUMES and VOLUME
T).
7. While continuing to hold the #4 and #5 button, press and hold the #1 button (SUB-POWER).
8. After both buttons have been held down for five (5) seconds, first release the #1 button, then release the
#4 and #5 button.
9. As stated previously, the input that the TV had selected at the time will determine which actual
INITIALIZATION display will show up. (See below)
17 6.Troubleshooting The flow chart shown below will help you to troubleshoot your TV set with it doesn’t display normally. Each procedure offers a simple way to check for system errors. Before starting, ensure that there is a signal in and that the TV is turned on.