Sharp LC-20SH1EB Service Manual ▷ View online
5
LC-20SH1E
LC-20SH2E
SUPPLEMENT
ADJUSTING PROCEDURE OF EACH SECTION
The best adjustment is made before shipping. If any position deviation is found or after part replacement is
performed, adjust as follows.
performed, adjust as follows.
Preparation for adjustments
Use a stable AC power source.
LC-20SH1E, LC-20SH2E
LC-20SH1E, LC-20SH2E
AC Power : 230V
1. Adjusting procedure
Complete Set
→
Power ON
→
Enter Adjustment Process Mode (By Remote Control)
→
RF AGC adjustment
→
DCXO adjustment
→
Common Bias adjustment
→
White Balance adjustment
2. Entering the adjustment process mode
• After power on, press the adjustment process mode key on the service remote control.
• Switching on the TV set, holding pushed the "Input" and "Volume (–)" key at once, the TV set enters in the "K"
• Switching on the TV set, holding pushed the "Input" and "Volume (–)" key at once, the TV set enters in the "K"
mode.
In this condition, pushing "Volume (–)" and "P (
In this condition, pushing "Volume (–)" and "P (
Ù
)" key, the adjust mode appears.
3. Key operation in the adjustment process mode
• Use the "UP" or "DOWN" cursor key to select the adjustment mode item.
• Use the "LEFT" or "RIGHT" cursor key to change the data.
• Use the "LEFT" or "RIGHT" cursor key to change the data.
4. Initialization
When the EEPROM (IC101) has been replaced or when the EEPROM has been initialized, readjust the each
adjust the each adjustments.
4-1. When the EEPROM has been replaced:
adjust the each adjustments.
4-1. When the EEPROM has been replaced:
1) Plug in the AC cord to an AC power outlet and turn on the power.
2) When the setting is finished, the LED turns from red to green. In about 15 seconds, the initialization is
2) When the setting is finished, the LED turns from red to green. In about 15 seconds, the initialization is
completed.
4-2. When initializing the EEPROM data and making readjustments:
1) Enter the Adjustment Process mode.
2) Select the INIT TV item and press the "RIGHT" cursor key to enable the item.
3) Unplug the AC cord and plug it again in the AC power outlet. Turn on the power.
4) When the setting is finished, the LED turns from red to green. In about 5 seconds, the initialization is
2) Select the INIT TV item and press the "RIGHT" cursor key to enable the item.
3) Unplug the AC cord and plug it again in the AC power outlet. Turn on the power.
4) When the setting is finished, the LED turns from red to green. In about 5 seconds, the initialization is
completed.
<Note>
When the INIT TV item has been enabled in the adjustment process, be sure to unplug the AC cord and plug it in
again. Then start adjustments. Otherwise the readjusted data cannot be put in memory.
again. Then start adjustments. Otherwise the readjusted data cannot be put in memory.
4-3. Setting the screen size (inches)
1) Enter the Adjustment Process mode.
2) Check the model number.
3) Hold down the "LEFT" or "RIGHT" cursor key longer than 2 seconds, and select a screen size (20).
2) Check the model number.
3) Hold down the "LEFT" or "RIGHT" cursor key longer than 2 seconds, and select a screen size (20).
SH1EB
Main Ver
*.**
Scaler Ver *.**.**
INCH SIZE
20
6
LC-20SH1E
LC-20SH2E
SUPPLEMENT
5. Adjustment
5-1. RF AGC adjustment
1) Feed in the colour bar signal (Field strength: 52dBµ V)
2) In Adjustment Mode, select RF AGC AUTO ("OFF") and press the "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete, when it displayed "OK".
4) RF AGC data will be in the range of 0-63. If "NOK" is displayed, adjustment failed.
5) Check that the value is 30±10.
2) In Adjustment Mode, select RF AGC AUTO ("OFF") and press the "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete, when it displayed "OK".
4) RF AGC data will be in the range of 0-63. If "NOK" is displayed, adjustment failed.
5) Check that the value is 30±10.
5-2. DCXO adjustment
1) Feed in the B/G NICAM signal. (Field strength: more than 70dBµ V.)
2) In Adjustment Mode, select the DCXO AUTO ( "OFF") and press "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete when "OK" is displayed. If "NOK" is displayed, adjustment failed.
4) Check that the value is 58±25.
2) In Adjustment Mode, select the DCXO AUTO ( "OFF") and press "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete when "OK" is displayed. If "NOK" is displayed, adjustment failed.
4) Check that the value is 58±25.
5-3. Common bias adjustment
1) Select COM BIAS in the adjustment process mode.
2) Get the built-in flicker pattern displayed onscreen.
2) Get the built-in flicker pattern displayed onscreen.
Direct key on the remote controller: No. 19 (13 hex)
3) Using the LEFT and RIGHT keys, adjust the flicker to minimum.
4) Finally make the flicker pattern display disappear.
4) Finally make the flicker pattern display disappear.
Direct key on the remote controller: No. 19 (13 hex)
5-4. White balance adjustment
[A] White balance pre-adjustment
1) Feed the 0%/100% white signal.
2) In Adjustment Mode, select AWBSD ("OFF") and press "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete when "OK" is displayed.
2) In Adjustment Mode, select AWBSD ("OFF") and press "RIGHT" cursor key to start the adjustment.
3) Automatic adjustment complete when "OK" is displayed.
[B] White balance adjustment
For 40% white signal adjust RGB CUTOFF2 and for 80% white signal adjust RGB-GAIN.
1) Composite Signal
1) Composite Signal
[Input signal] Composite video signal with picture of 80% white(Left) and 40% white(Right).
[Adjustment] Adjust the RGB CUTOFF2 and RGB-GAIN
[Adjustment] Adjust the RGB CUTOFF2 and RGB-GAIN
[Adjustment method MANUAL]
CUT OFF RGB CUT OFF2
CUT OFF RGB CUT OFF2
RB variable adjust
GAIN
WB RGB-GAIN
RB variable adjust
( Data taken from MINOLTA CA-210)
SH1EB
Main Ver
***
Scaler Ver *****
RF AGC AUTO
OK
30
RF AGC Auto adjustment complete
RF AGC data (Example)
RF AGC data (Example)
SH1EB
Main Ver
***
Scaler Ver *****
DCXO AUTO
OK
**
DCXO Auto adjustment complete
DCXO data
DCXO data
Adjustment
Inspection
Specification
Specification
80% white
x
0.285
0.002
0.01
y
0.291
0.002
0.01
40% white
x
0.277
0.003
0.01
y
0.284
0.003
0.01
←
0%
←
100%
LCD SCREEN
7
LC-20SH1E
LC-20SH2E
SUPPLEMENT
7. Lamp error detection
7-1. Functional description
This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety
when the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed,
the followings occur.
when the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed,
the followings occur.
1
The main unit of television is turned OFF 5 seconds after it is turned ON. (The power LED on the front
side of TV turns from green to red.)
side of TV turns from green to red.)
2
If the situation
1
happens 5 times sequentially, television can not be turned ON. (The power LED remains
red.)
7-2. Countermeasures
7-2-1. Check when turning OFF the lamp error detection
7-2-1. Check when turning OFF the lamp error detection
If the power has been turned off 5 times because of lamp error, hold down the unit’s "INPUT" and "Volume
(–)" key simultaneously and turn on the unit’s power switch. The TV set gets back on power in the "K"
mode.
In this state, press the unit’s "Volume (–)" and "P (
(–)" key simultaneously and turn on the unit’s power switch. The TV set gets back on power in the "K"
mode.
In this state, press the unit’s "Volume (–)" and "P (
Ù
)" key simultaneously. The Adjustment Process mode
shows up.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" of the adjustment process is 1 or more. If it is 1 or more, it indicates
the lamp error detection was executed.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" of the adjustment process is 1 or more. If it is 1 or more, it indicates
the lamp error detection was executed.
7-2-2. Resetting of the lamp error count
After confirming that the lamp or lamp circuit is normal, reset the lamp error count. Select "ERROR NO
RESET" of the adjustment process and set the number to 0 using the "LEFT" or "RIGHT" cursor key.
RESET" of the adjustment process and set the number to 0 using the "LEFT" or "RIGHT" cursor key.
Afterwards, perform the operation check to confirm that the lamp error detection does not function.
Reset 0
SH1EB
Main Ver
*.**
Scaler Ver *.**.**
ERROR NO RESET
5
6. Factory Setting
6-1. Make the factory setting using the adjustment remote control.
6-2. Different factory settings.
Model
Key Name
Remote Control Code
OSD Language Setting
A3IK0H1EB0
Shipment Setting 1
1000
0011
1111
110
German
(00001 FEh)
A3IK0H1KB0
Shipment Setting 2
1000
0000
1010
110
English
(00001 A8h)
A3IK0H1RB0
Shipment Setting 3
1000
0110
1011
110
Russian
(00003 EBh)
A3IK0H1FB0
Shipment Setting 4
1000
0100
1011
110
French
(00004 E9h)
A3IK0H1IB0
Shipment Setting 6
1000
0000
1011
110
Italian
(00005 E8h)
Model
Language
Country
Colour System
Sound System
AV Control Voltage
A3IK0SH1EB0
German
Germany
PAL
B/G
NO
A3IK0SH1KB0
English
UK
PAL
I
NO
A3IK0SH1RB0
Russian
Russia
SECAM
D/K
NO
A3IK0SH1FB0
French
France
SECAM
L/L'
YES
A3IK0SH1IB0
Italian
Italy
PAL
B/G
NO
8
LC-20SH1E
LC-20SH2E
SUPPLEMENT
8. Hotel mode
8-1. How to enter the Hotel mode.
1) Turn on the power and enter the Adjustment Process mode.
2) Using the "UP" or "DOWN" cursor key on the remote controller, select the Hotel mode.
3) Using the "RIGHT" cursor key on the remote controller, change the setting from "0" to "1". Now the
2) Using the "UP" or "DOWN" cursor key on the remote controller, select the Hotel mode.
3) Using the "RIGHT" cursor key on the remote controller, change the setting from "0" to "1". Now the
Hotel mode shows up.
4) Using the "UP" or "DOWN" cursor key on the remote controller, select each item .
Make the setting with the "LEFT" or "RIGHT" cursor key .
5) Finally quit the Adjustment Process mode and turn off the power. The TV set comes on in the Hotel mode
after the next switch-on.
8-2. Hotel mode settings
1) Maximum volume (0 - 60)
You can set the maximum volume at your desired level.
2) Volume fixed (Variable
↔
Fixed)
You can fix the sound volume at your desired level.
When you set "Fixed", the sound volume which you have just selected is fixed.
When you set "Fixed", the sound volume which you have just selected is fixed.
3) Volume fix level (0 - 60)
If "Fixed" has been selected, you can set a fixed volume at your desired level.
4) RC button (
→
Enable
↔
Limited
↔
Disable
←
)
When you set "Limited", all the other remote control keys than "power", "P (
ù
)/(
Ù
)", "volume (+)/(–)"
and brightness are inoperative.
When you set "Disable", the remote control keys are inoperative in their otherwise usual way.
When you set "Disable", the remote control keys are inoperative in their otherwise usual way.
5) Panel button (Enable
↔
Disable)
If "Disable" has been selected, the set's keys other than POWER gets disabled.
6) Menu button (Enable
↔
Disable)
If "Disable" has been selected, the "MENU" keys both on the set and remote controller get disabled.
7) On Screen Display (Yes
↔
No)
If "No" has been selected, the On Screen Display does not appear.
8) Input mode start (
→
Normal
↔
0
↔
199
↔
Input2
↔
Input1
←
)
When any other item than "Normal" has been selected, the set gets started in a selected input mode at
the next power-on.
the next power-on.
9) Input mode fixed (Variable
↔
Fixed)
If "Fixed" has been selected, any channels and input modes other than those selected in the start
mode cannot be picked up.
mode cannot be picked up.
Adjustment Process menu
Hotel mode =
"0"
Hotel mode
0
EXT CONTROL OFF
Hotel mode = "1"
Hotel mode
1
Menu button
**
Maximum volume
**
On Screen Display
**
Volume fixed
**
Input mode start
**
Volume fix level
**
Input mode fixed
**
RC button
**
EXT CONTROL
OFF
Panel button
**
Click on the first or last page to see other LC-20SH1EB service manuals if exist.