DOWNLOAD Sharp LC-60LE741E (serv.man9) Service Manual ↓ Size: 2.23 MB | Pages: 64 in PDF or view online for FREE

LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E

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1. Function

This LCD color TV set incorporates a Lamp error detection feature that automatically turns off the power for safety under abnormal lamp or lamp
circuit conditions. If by any chance anything is wrong with the lamp or lamp circuit or if the lamp error detection feature is activated for some rea-
son, the following will result.

1) The power is interrupted in about 500ms after it is turned on.

(A central icon on the front of the TV flash on and off.: ON for 400ms and OFF for 1600ms.)

2) If the above phenomenon 1) occurs 5 times, it becomes impossible to turn on the power.

(A central icon keep flashing on/off.)

2.  Measures

1) Set the lamp error detection to OFF

Enter the adjustment process mode, referring to “2. Entering and exiting the adjustment process mode”.

The adjustment process mode can ignore “5 times count”, so If the above phenomenon 1) occurs 1~4 times, the lamp will go out.

If Lamp Error detection pin [4pin of PD: P9602/19pin of IC2001] is “High” by a trouble with the lamp and lamp circuit, it can boot-up by the
adjustment process mode.

Please execute “Lamp Error detection off-mode”.

    Unplug the AC power cord of running TV set to force off the power.

    While holding down the “VOL (-)” and “CH (

)” keys on the set at once, plug in the AC power cord to turn on the power.

    After a central icon flash off, separate the fingers from key on the set.

Then, you can check the operation to see if the lamp and lamp circuit are in trouble.

If you fail boot-up, retry the procedure.

2) Resetting the lamp error count

After the lamp and lamp circuit are improved from a trouble, reset the lamp error count. 

(Because the power cannot be turned on, if a lamp error is detected 5 consecutive times.)

a) Enter the adjustment process mode, referring to “2. Entering and exiting the adjustment process mode”.

b) Using the cursor ( /

) key, move to the cursor to [LAMP ERROR RESET], Line 8 on adjustment process mode service page 2/21.

c) With the cursor ( / ) keys, select the [LAMP ERROR RESET] value.

Finally press the cursor (OK)., the count is reset.

Check LAMP ERROR Count on adjustment process mode Page 2/21.

INDUSTRY INIT

Enter

INDUSTRY INIT (-Publicl)

OFF

PUBLIC MODE

OFF

Center Acutime
RESET

OFF

Backlight Acutime
RESET

OFF

LAMP ERROR RESET

OFF

Resetting to "0"

ADJ PARAM SET

Enter

VIC XPOS

0

VIC YPOS

0

VIC SIGNAL TYPE

MAIN

VIC READ

OFF

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1. Starting the Public Mode

1)  Method of needing password

a) While holding down the  "INPUT"  and   "Volume UP"  keys on the set at once, plug in the AC power cord to turn on the power.

b) Display the Pass Word input screen.

After a while, value of Enter password appears on the screen.

Operation procedure

• The initial input position is the digit at the left end.

• For the numeric keys “0” to “9” of R/C, key input is accepted.

Input of the other keys is prohibited.

• Change “—” to “ ” by inputting the numeric key at the input position, and shift the input position rightward one digit.

• When three digits are completely input, the Pass Word is judged.

c) Check the Pass Word by inputting three digits.

If the Pass Word “0” “2” “7”, it shifts to the PUBLIC Mode setting screen.

In another case, the screen is erased, and it operates in the ordinary mode.

2. Exiting the Public Mode Setting screen

• There are two following ways to exit the Public Mode setting screen.

1) Turn off the power.

2) Select “Execution” in the PUBLIC_Mode to execute it.

Activate the restart under the set content.

Here, the START input SOURCE setting is excluded since this item is referred to only when the power is turned on.

3. Set value of the Public Mode

• When the shipment setting is done, a set each value in Public Mode is initialized.

(PUBLIC MODE in the process mode Setting of a flag is also initialized)

• Separately, the shipment beginnings when all except for each set value in Public Mode is initialized are provided for a process mode.

(INDUSTRY INIT (-Public))

• Only when turning on the PUBLIC MODE item, each setting is effective.

• After it decides it with EXECUTE, it AC OFF/ON it to reflect a set value.

4. Basic operation in the Public Mode

Enter password

Enter password

Enter password

Vol (+/-) or Cursor ( / ) Change or execution of the set value.

Public Mode setting screen.

CH (+/-) or Cursor ( / ) Movement to the selected item.
Decision (ok)

Excution (Used by the items "Execution" and "RESET".)

Public Mode
POWER ON FIXED
SHUT DOWN MODE
MAXIMUM VOLUME
VOLUME FIXED
VOLUME FIXED LEVEL
RC BUTTON
PANEL BUTTON
MENU BUTTON
AV POSITION FIXED
ON SCREEN DISPLAY
INPUT MODE START
INPUT MODE FIXED
LOUD SPEAKER
RC PATH THROUGH
232C POWON
PUBLIC MODE
RESET
EXECUTE

[VARIABLE]

[NORMAL]

[60]

[VARIABLE]

[20]

[RESPOND]
[RESPOND]
[RESPOND]

[VARIABLE]

[YES]

[NORMAL]

[VARIABLE]

[ON]

[OFF]

[DISABLE]

[ON]

LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E

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5. Operation after “RESET”

Select “RESET” in the PUBLIC Mode, and it operates as follows when it is executed (refer to the basic operation).

• The set contents in the PUBLIC mode are initialized.

• It does not exit the PUBLIC mode.

• If “EXCUTE” is not executed, the content that does RESET is not reflected.

6. Setting items. (* Item names and selective items are expressed in English.)

1) Power ON fixed [POWER ON FIXED]

If the power button is pressed in the ordinary mode in setting to “FIXED_ALL” and “FIXED_BODYKEY”, the caution is displayed for 5 seconds.

* The OSD display is an example.

If another ODS is previously displayed, the status is reset (MENU or similar).

2) Instantaneous current shutdown setting in turning off the power [SHUT DOWN MODE]

3) Volume maximum level [MAXIMUM VOLUME]

Option

“VARIABLE”, “FIXED_ALL”, “FIXED_BODYKEY” or “RCRESPOND” (loop enabled)

Default “VARIABLE”
Function • VARIABLE

• FIXED_ALL
• FIXED_BODYKEY 
• RC RESPOND 

: “POWER/RECEPTION” key on TV unit or remote control is enabled.
: “POWER/RECEPTION” key on TV unit or remote control is disabled.
: Only the “MAIN POWER” key on TV unit is disabled (The remote control is enabled).
: The main unit’s POWER switch toggles between ON and Standby (the same operation by the 
  remote control).

Key disabled when set 
other than default

• OFF TIMER (SLEEP) (*Only when setting to FIXED_ALL)

Remarks 

• When selecting to “FIXED_ALL”, function related standby factors (see below) doesn’t work. and not selecting.

  OFF TIMER (Sleep)
  No operation OFF
  No signal OFF (including the power management)
* These items does not exist according to the model.

Option

“NORMAL” or “QUICK”

Default NORMAL
Function 

• This function decides whether scanning digital tuner is enabled or disabled when the power is standby.
     NORMAL
     QUICK

: Scanning digital tuner is enabled when the power is standby.
: Scanning digital tuner is disable.
  It is possible to put into the standby state instantaneously due to power off input, when the 
  power is standby.
  Immediately, state is a complete standby.

Remarks 

In selecting “QUICK”, the function does not work for the following items. (selection impossible.)
• ON TIMER, QUICK START, DIGITAL FIXED, etc.

* These items does not exist according to the model.

Option

0~60 (loop disabled)

Default 60
Function

The volume cannot be increased more than the adjusted value (the main unit’s speaker only).

Remarks 

• When setting to 59 or less, only the figure is displayed in the normal mode; the volume bar is not displayed.
• The volume of the headphones is limited.
• The setting is impossible when VOLUME FIXED is set to FIXED.

When power button on the main unit is pressed

When power button on R/C is pressed

No Power off by power button.

No Power off by remote control.

LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E

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4) Volume fixed [VOLUME FIXED]

5) Volume fixed level [VOLUME FIXED LEVEL]

6) Remote control operation [RC BUTTON]

7) Main Unit Operation [PANEL BUTTON]

Option

“VARIABLE”, “FIXED”, “ACCTRL” or “AC/RCCTRL” (loop enabled)

Default “VARIABLE”
Function • VARIABLE

• FIXED
• AC CTRL

• AC/RC CTRL 

: The volume is not fixed.
: The volume is fixed to the value adjusted in the volume fixed level.
: The unit starts at the volume specified in the volume fixed level, when power is turned on in the 
  case of the AC-ON only.
: The unit starts at the volume specified in the volume fixed level, when power is turned on in 
  any case.
  (AC

→ON, remote control→ON, main utit's key→ON)

Exception

• In the adjustment process, the volume can be set to any level regardless of this setting.

Disabled key when 
setting to FIXED

• VOLUME UP/DOWN    [both remote control and main unit]
• MUTE 

* Main units's key is enabled for operating menu.

Remarks 

• [MAXIMUM VOLUME] has priority to [VOLUME FIXED]

* When setting to FIXED, Maximum volume is fixed.

• The volume of the headphones is fixed.
• When setting to “FIXED”, the volume is not displayed in operating Disabled key.
• In menu operation, the main unit’s keys (Vol (+/-)) are enabled.
• In setting to FIXED, ONVOL of On TIMER is not selected (Eliminate Item).
• In setting to AC/RC CTRL, ONVOL of On TIMER i is not selected (Eliminate Item)

Option

0~60 (loop disabled)

Default 20
Function

The volume is fixed to the adjusted value (the main unit’s speaker only).

Exception

• In the adjustment process, the volume can be set to any level regardless of this setting.

Remarks 

• When [VOLUME FIXED] is set to “VARIABLE”, the setting cannot be changed.
• VOLUME can be abbreviated to VOL.

Option

“RESPOND”, “NORESPOND” or “LIMITED” (loop enabled)

Default “RESPOND”
Function 

The operation of the remote control’s keys is set.
     RESPOND
     NO RESPOND

     LIMITED 

: The remote control’s keys in the normal state are enabled.
: The remote control’s keys in the normal state are disabled.
  The POWER key (RECEPTION/STANDBY key) is also disabled.
: Only a part of keys (CHANNEL, etc.) is enabled and other keys are disabled.

Exception

• All the keys are enabled regardless of this setting while entering the adjustment process mode, inspection mode or 

Public Mode setting screen.

Remarks 

The enable keys when setting to “LIMITED” are depended on Model.

Option

“RESPOND” or “NO RESPOND” (loop enabled)

Default “RESPOND”
Function • RESPOND 

• NO RESPOND

: The main unit’s keys are enabled.
: The main unit’s keys are disabled excluding the POWER key (RECEPTION/STANDBY key).

Exception

• The start operation in the adjustment process mode, inspection mode are enabled regardless of this setting.
• All the keys are enabled regardless of this setting while entering the adjustment process mode, inspection mode or 

Public Mode setting screen.

• For the models with the MENU key on the main unit, menu operation is possible regardless of the setting during the 

initial setting when the power is turned on for the first time.