Sharp LC-20E1E (serv.man9) Service Manual ▷ View online
13
LC-20E1E
6. Factory Setting
6-1. Perform a factory setting after completing all adjustments.
6-2. A “POWER” keys is made on with pushing an “TV/VIDEO” and “MENU” keys at the same time.
6-3. “K” of the inspection process mode is displayed on the screen upper left.
6-4. CH (
6-2. A “POWER” keys is made on with pushing an “TV/VIDEO” and “MENU” keys at the same time.
6-3. “K” of the inspection process mode is displayed on the screen upper left.
6-4. CH (
ù
) and VOL (+) keys are pushed about 2 seconds at the same time.
6-5. Release keys, if “E” is displayed on the screen upper left and “COMPLETE” is displayed on the bottom of it.
6-6. After a while, a power will be in a standby mode and a setup will be finished.
Note: “First installation” serves on “Deutsch”.
6-6. After a while, a power will be in a standby mode and a setup will be finished.
Note: “First installation” serves on “Deutsch”.
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.
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.)
If the situation
of TV turns from green to red.)
If the situation
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
When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment
process with the power LED red. Entering the adjustment process turns OFF the error detection and turns
ON TV.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" on line 9, page 1 of the adjustment process is 1 or more. If it is 1 or
more, it indicates the lamp error detection was executed.
process with the power LED red. Entering the adjustment process turns OFF the error detection and turns
ON TV.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" on line 9, page 1 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" on line 9, page 1 of the adjustment process and set the number to 0 using the volume button.
RESET" on line 9, page 1 of the adjustment process and set the number to 0 using the volume button.
1
+ B – A D J
160
M O D E L
E1E
V E R
1 . 0 0 0
Reset 0
Afterwards, perform the operation check to confirm that the lamp error detection does not function.
Page 1 of the adjustment process
I N C H
SIZE
20
N T S C
PWM F R E Q
0C0
P A L
PWM F R E Q
0 BD
N T S C
PWM D U T Y
0
P A L
PWM D U T Y
0
T V
GAIN
OFF
ERROR
N O
R E S E T
5
PUBLIC MODE
OFF
E 1 E
1
2
1
14
LC-20E1E
TROUBLE SHOOTING TABLE
~
~
~
~
15
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No picture No picture
(1/3)
No picture at allNo picture at all
No TV and S-VIDEO outputNo TV and S-VIDEO output
No TV outputNo TV output
No VIDEO2 outputNo VIDEO2 output
Check all the settings microprocessor's adjust process menu.
Is in/output of
Check IC801
Is in/output of
Check IC402
Is volt
ages at
Check their
Check V1.IN line
IC801 normal?
No
and its
IC402 normal?
No
and its
pins 6,7,18 of
No
power lines.
No
and its
Yes
Yes
Yes
Yes
Yes
Yes
Yes
tuner normal?
Is in/output of
Check IC1201
Is input at pin
Check IC801,
Is ou
tput at pin
Check tuner
IC1201 normal?
No
and its
73 of IC801
No
AV1 line and
13 of tuner
3 of tuner
No
and its
perip
h
era
l parts.
perip
h
era
l parts.
perip
h
era
l parts.
perip
h
era
l parts.
perip
h
era
l
parts.
normal?
th
eir
Check LCD
Is input at pin
Check its line.
pane
l vo
ltages
an
d
wave
form.
Is the pins 2
Check IC402
and 4 of IC402
No
No
No
and its
at "H" and "L"
peripheral parts.
state?
Is the pins 65
Check its lines.
normal?
normal?
and 66 of
IC2001 at "H"
and "L"state?
Is input at pin
75 of IC801
normal?
perip
h
era
l parts.
16
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No picture
(2/3)
No S-VIDEO outputNo S-VIDEO output
No VIDEO1 outputNo VIDEO1 output
No TELETEXT output
Check all the settings microprocessor's adjust process menu.
Is input at pin
Check SY-line,
Is input at pin
Check AV2
Is input at pins
Check
IC1203
1 of IC402 and
No
SC-line
and
their
74 of IC801
No
line and its
2,5,11,14 of
Yes
and its
pin 71 of IC801
peripheral parts.
normal?
peripheral parts.
peripheral parts.
peripheral parts.
peripheral parts.
IC1203 normal?
Is output at pins
Check
3~5 of
Yes
connection
SC1602 normal?
cable.
Is output at pins
Is output at pins
Is input at pin
Check IC1601
1 and 7 of
Yes
Yes
57~59 of
No
No
No
No
No
21 of IC1601
Yes
and its
IC1619 and pin
IC1601 normal?
normal?
peripheral parts.
normal?
Check IC1619,
IC1690 and their
Check the
Check V2VO
line and its
normal?
1 of IC 1620
R,G,B line.
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