Hitachi L26-H03B Schematic

L26-H03B
L26-H03W
L32-H03B
L32-H03W

LCD TV 2009-3

HITACHI

Caution: Be sure to read this manual before servicing. To ensure safety from fire, electric shock, injury, harmful

radiation and materials, various measures are provided in this LCD TV. Be sure to read cautionary items described
in the manual before servicing. These servicing instructions are for use by qualified service personnel only. To
reduce the risk of electric shock, do not perform any servicing other than that described in the operating instructions
unless you are qualified to do so.

L26-H03B/ L26-H03W L32-H03B/ L32-H03W

1. Summary

VHF1ch ~ 12ch, UHF13ch ~ 62ch, CATV (C13 ~ C63), Digital BS 110 degree CS digital and terrestrial digital (CATV
support pass-through, except for one-segment broadcasting)

Table of Contents

1. Summary………..........……..........................……….........1

2. Features…….………..........................................……......4

3. Dimensions……..……………………………………………5

4. General Specification................................…………........6

5. Service points…………….…………….……………..........7

6. Adjustment……………..………..…….………..….…….....8

7. Troubleshooting………...……………………….…….......17

9. Block Diagram.....……………..………….………......27

10. Connection Diagram……….………….……..……..28

11. Wiring Diagram.………..………………....…….......29

12. PCB Layout……………………………....……….....31

13. Exploded View…………………..……….................38

14. Service Parts List…...............................................40

15. Different Parts List.………………..……………......48

8. Self Diagnosis Function…..……………...……….....26

HITACHI

L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

Caution for Safety

Please read this page before repair the TV.
The following safety precautions are designed to help you stay safe and prevent accidents during the repair work.

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

2. Features

● Enhanced definition LCD display panel
L26-H03B/L26-H03W

This specification applies to the 26.0 inch Color TFT-LCD Module T260XW02 VQ. This LCD module has a TFT
active matrix type liquid crystal panel 1366x768 pixels, and diagonal size of 26.0 inch. This module supports
1366x768 XGA-WIDE mode (Non-interlace).

Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale
or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.

The T260XW02 VQ has been designed to apply the 8-bit 1 channel LVDS interface method. It is intended to support
displays where high brightness, wide viewing angle, high color saturation, and high color depth are very important.
The T260XW02 VQ model is RoHS verified which can be distinguished on panel label.

L32-H03B/L32-H03W

This specification applies to the 31.51 inch Color TFT-LCD Module T315XW02 VS. This LCD module has a TFT
active matrix type liquid crystal panel 1366x768 pixels, and diagonal size of 31.51 inch. This module supports
1366x768 XGA-WIDE mode (Non-interlace).

Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale
or the brightness of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.

The T315XW02 VS has been designed to apply the 8-bit 1 channel LVDS interface method. It is intended to support
displays where high brightness, wide viewing angle, high color saturation, and high color depth are very important.

The T315XW02 VS model is RoHS verified which can be distinguished on panel label.

● Easy-to-use remote control and on-screen display system

The included remote control operates all TV functions. Furthermore, the on-screen display system shows the status
of the control settings in an easy-to-view fashion.

● Power saving system

When connected to a VESA DPMS-compliant PC, the TV cuts its power consumption while idle.

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3. Dimensions

L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

4. General Specification

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

5. Service points

Lead-free solder

This product uses lead-free solder (unleaded) to help protect the environment. Please read these instructions
before attempting any soldering work.

1) Lead-free solder indicator

Printed circuit boards using lead-free solder are engraved with an

2) Properties of lead-free solder

The melting point of lead-free solder is 40-50 ℃ higher than leaded solder.

3) Servicing solder

Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended. Although servicing with
leaded solder is possible, there are a few precautions that have to be taken. (Not taking these precautions
may cause the solder to not harden properly, and lead to consequent malfunctions.)

label.

Precautions when using leaded solder

● Remove all lead-free solder from soldered joints when replacing components.

● If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after the

lead-free solder has been completely melted (do not apply the soldering iron without solder).

4) Servicing soldering iron

A soldering iron with a temperature setting capability (temperature control function) is recommended.
The melting point of lead-free solder is higher than leaded solder. Use a soldering iron that maintains a high
stable temperature (large heat capacity), and that allows temperature adjustment according to the part being
serviced, to avoid poor servicing performance.

Recommended soldering iron:

● Soldering iron with temperature control function (temperature range: 320-450℃)

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

6. Adjustment

6.1 White Balance Adjustment

Approximately 2 hours should be allowed for warm up before proceeding white balance adjustment.

Before White balance adjustment, you must set the color analyzer CA210.

6.1.1 Calibration

1. Receive XGA 60Hz 100% white signal by PC input.

2. Select PC input by R/C Input Select button.

3. Enter FACTORY MODE by R/C [べんり][青][9][1][1][1] (as picture 1, picture 2)

Picture 1 Remote Controller Picture 2 FACTORY MODE Menu

4. Choose "OPTION" by R/C [上／下] button.

Then press R/C [決定] button. -> Enter to OPTION menu. (as picture 3)

Picture 3 OPTION Menu

5. Choose "PC CALIBRATE" by R/C [上／下] button.

Then press R/C [右] button. -> Value changes 0 to 1 (red letter).

Then press R/C [決定]. -> PC CALIBRATE executed, and value returns to 0.

6. Press R/C [もどる] -> Return to FACTORY MODE menu.

6.1.2 Color Temperature Adjustment

1. Set picture mode "スーパー" by Menu.

1.1 Exit FATORY MODE by [メニュー] button.

1.2 Enter the "トップメニュー" by R/C [メニュー] button. Then forward to "映像設定" - "画質設定". ("画質設定"

menu indicated.)

1.3 Confirm that "対象コンテンツ" is set to "共通".

1.4 Set "映像モード" to "スーパー". Then exit "トップメニュー" by [メニュー] button.

1.5 Re-enter FACTORY MODE. (see 6.1.1 item 3.)

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2. Choose "PQCOFF" by R/C [上／下] button. Then choose value "1" by R/C [左／右] button, then press [決定].

3. Choose "SAVE" by R/C [上／下] button. Then choose value "1" by R/C [左／右] button, then press [決定]. (After

this, value returns to "0" automatically.)

4. Return to "FACTORY MODE" by R/C [もどる] button. Then choose "COLOR TEMP" by R/C [上／下] button.

(Enter COLOR TEMP menu.)

Picture 4 COLOR TEMP Menu

5. Color Temp. adjustment (HI)

5.1 Choose "TEMP" by R/C [上／下] button. Then choose value "HI" by R/C [左／右] button, then press [決定].

5.2 Input signal from specified terminal as shown below.

Table 1 Signal setting for adjustment of Color temperature

5.3 Choose "SOURCE" by R/C [上／下] button. Then choose the input from

the Input names (see below) in "SOURCE" by R/C [左／右] button.

Input names: PC (to adjust PC input)

D (to adjust Component input)

HDMI1 (to adjust HDMI input)

CVBS1 (to adjust Video input)

Input names indicated by red letters.

Then press R/C [決定] button. -> Change to selected input.

5.4 Adjust Color temperature of HI.

Do not change B GAIN (keep the value 1024), change R GAIN and G GAIN, to meet the specified x and y value:

x = 0.266 +/-0.005, y = 0.270 +/-0.005.

5.5 After adjusting, write down the R GAIN, G GAIN, B GAIN value to paper as memo. Then calculate Gb and Bb as

shown below

Rb = [R GAIN] / [R/GAIN] * 1024 = 1024 (Always)

Gb = [G GAIN] / [R/GAIN] * 1024 = ____ (Calculated)

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Bb = [B GAIN] / [R/GAIN] * 1024 = ____ (Calculated)

5.6 Change R GAIN value to Rb, G GAIN value to Gb, B GAIN value to Bb.

5.7 To adjust color temp of another input, change input name and input signal, then repeat 5.1 to 5.6.

6. Set picture mode "スタンダード" by Menu.

6.1 Exit FATORY MODE by [メニュー] button.

6.2 Enter the "トップメニュー" by R/C [メニュー] button. Then forward to "映像設定" - "画質設定". ("画質設定"

menu indicated.)

6.3 Confirm that "対象コンテンツ" is set to "共通".

6.4 Set "映像モード" to "スタンダード". Then exit "トップメニュー" by [メニュー] button.

6.5 Re-enter FACTORY MODE. (see 6.1.1 item 3.)

7. Color Temp. adjustment (MID)

7.1 Choose "TEMP" by R/C [上／下] button. Then choose value "MID" by R/C [左／右] button, then press [決定].

7.2 Input signal from specified terminal as shown in 5.2.

7.3 Choose "SOURCE" by R/C [上／下] button. Then choose the input from the input names in "SOURCE" by R/C

[左／右] button. Then press R/C [決定] button. -> Change to selected input.

7.4 Adjust Color temperature of MID.

Do not change R GAIN (keep the value 1024), change G GAIN and B GAIN, to meet the specified x and y value:

x = 0.285 +/-0.005, y = 0.293 +/-0.005.

7.5 To adjust color temp of another input, change input name and input signal, then repeat 7.1 to 7.4.

8. Color Temp. adjustment (LOW)

8.1 Choose "TEMP" by R/C [上／下] button. Then choose value "LOW" by R/C [左／右] button, then press [決定].

8.2 Input signal from specified terminal as shown in 5.2.

8.3 Choose "SOURCE" by R/C [上／下] button. Then choose the input from the input names in "SOURCE" by R/C

[左／右] button. Then press R/C [決定] button. -> Change to selected input.

8.4 Adjust Color temperature of LOW.

Do not change R GAIN (keep the value 1024), change G GAIN and B GAIN, to meet the specified x and y value:

x = 0.314 +/-0.005, y = 0.316 +/-0.005.

8.5 To adjust color temp of another input, change input name and input signal, then repeat 8.1 to 8.3.

9. Choose "SAVE" by R/C [上／下] button. Then choose value "1" by R/C [左／右] button, then press [決定].

(After this, value returns to "0" automatically.)

10. Choose "PQCOFF" by R/C [上／下] button. Then choose value "0" by R/C [左／右] button, then press [決定].

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6.2 Firmware update

1. Preparation (as picture 5)

1) Connect to 1 port of Hub from Ethernet port of PC with Ethernet cable(straight type).

2) Connect to another port of Hub from LAN connector of L22/26/32-H03 with Ethernet cable (straight type).

Caution: Do not connect other PC.

Picture 5 How to Setup (example)

2. Settings

1) If the update tool "Boisclair updater window" is not installed, install it. ( Please see Page17)

2) Open the "Control Panel" - "Network" - "Local Area Network", and open its Property. (as picture 6)

Picture 6 Open Property

3) Choose "Internet Protocol" and open its Property as shown below.

4) Set IP address and Subnet mask as below;

IP address: 192.168.0.1

Subnet mask: 255.255.255.0

Picture 7 Property

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Picture 8 Internet protocol (TCP/IP) setting

5) Put "updatefile.zip"(datas for FW update) into "FirmUpdateTool_XXX\httpd\data". (as picture 9)

Picture 9

Note: To avoid the data damage of "updatefile.zip" file, it is recommended that once delete the previous

"updatefile.zip" file, then put new "updatefile.zip" file.

6) Other PC setting

① Disable "system standby" and "HardDisk power off".

② Disable "screen saver".

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3. Execute FW Update

1) Start PC.

2) Turn on TV

3) Execute FirmUpdateTool.exe

When Windows firewall is valid, the dialog is displayer at the first start, click in "Unblock", then "boisclair updater

window" is displayed.

Picture 10 FirmUpdateTool.exe Icon and Update Tool Image

In case that "boisclair updater window isn't displayed, Please confirm as shown below.

- Please confirm that Hub is turned on, and Link indicator of Hub blinks.

- Please confirm that PC network setting is correct.

- Please confirm that the Hub is connected to PC and TV correctly and firmly.

- Please confirm that "updatefile.zip" exists in the folder "FirmUpdateTool_XXX\httpd\data".

- Please confirm that other network applications (ex. Skype, MSN, etc) aren't working.

- If not improved, please use other PCs and try again.

4) Enter FACTORY MODE by R/C [べんり][青][1][1][1][9]

Picture 11 Remote Controller Picture 12 FACTORY MODE Menu

5) Choose "OPTION" by R/C [上／下] button.

Then press R/C [決定] button. -> Enter to OPTION menu.

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L26-H03B/ L26-H03W/ L32-H03B/ L32-H03W

Picture 13 OPTION Menu

6) Choose "F/W UPDATE" by R/C [上／下] button.

Then press R/C [右] button. -> Value changes 0 to 1 (red letter).

Then press R/C [決定]. -> F/W UPDATE started.

7) "Start update" message displayed on boisclair updater window.

Picture 14 "start update"

In case that "start update" comment not displayed.

- Please confirm that the Hub controller is connected to Main Board with Ethernet cable correctly and firmly.

- Please confirm that PC network setting is correct.

8) After a few minutes, "complete file system update" message displayed.

Picture 15 "complete file system update"

9) After "complete update" message displayed, please turn main power switch off TV, and close "boisclair updater

window". -> FW update has finished.

Picture 16 "complete update"

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In case that after 10 minutes "complete file system update" or "complete update" message not displayed.

- Please confirm that Hub is turned on, and Link indicator of Hub blinks. If not, please close "boisclair updater

window" and repeat from Item 3.

10) Disconnect the Ethernet cable from TV, then turn Main power switch off.

In case that "failed file system update" message displayed.

- There is some possibility that updatefile.zip is broken. Close "boisclair updater window", and repeat from Item 5.

4. Confirm F/W Version

1) Just after F/W updated, after turn Main power switch on, "はじめて設定" is displayed. Follow the steps to exit "は

じめて設定" as shown below.

(1) "STEP 1 はじめて設定を行います" is indicated. Confirm "次へ" is high light, then press [決定] button.

(2) "STEP 2 お住まいの地方／都道府県域の選択" is indicated. Press R/C [右] button, confirm [次へ] is high light,

then press [決定] button.

(3) "STEP 3 チャンネル設定方法の選択（地上アナログ放送）" is indicated. Press R/C [上／下] button, confirm "自

動設定" is high light, then press R/C [決定] button.

(4) "STEP 5 リモコンボタン割り当て（地上アナログ放送）" is indicated. Press R/C [右] Confirm "次へ" is high light,

then press R/C [決定] button.

(5) "STEP 6 地上デジタル放送の設定" is indicated. Press R/C [上／下] button, confirm "いいえ" is high light, then

press R/C [決定] button.

(6) "地上デジタル放送を視聴する場合は、各種設定から地上デジタル 放送の設定を行ってください" is indicated.

Confirm "次へ" is high light, then press R/C [決定] button.

(7) "STEP 10 ＢＳ/ＣＳデジタル放送のコンバーター電源を設定します" is indicated. Press R/C [右] Confirm "次へ"

is high light, then press R/C [決定] button.

(8) "STEP 11 郵便番号の設定" is indicated. Press R/C [下] Confirm"次へ" is high light, then press R/C [決定] button.

(9) "STEP 12 電話回線テスト" is indicated. Press R/C [上／下] button, confirm "いいえ" is high light, then press R/C

[決定] button.

(10) "STEP 13 はじめて設定完了" is indicated. Confirm "設定完了" is high light, then press R/C [決定] button.

(11) TV starts in Terrestrial Analog TV mode.

2) Confirm F/W version by following as shown below.

(1) Press R/C "メニュー" button, then "トップメニュー" is displayed. Forward [その他機器設定] - [機器情報表示].

Then confirm the F/W version indicated near [ソフトウェアバージョン] indication.

(2) Press R/C "メニューボタン", then exit F/W version confirmation.

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