PANASONIC TC-17LA1_TC-20LA1_ SELF CHECK _ DISPLAY & REPLACEMENT PARTS _ ADJUSTMENTS _ LCD TV
SELF CHECK FUNCTION
When phenomena like "the power fails from time to
time" or "the video/audio fails from time to time" can not be
confirmed at then time of servicing, the self-check function can be used to
confirm the occurrence and to limit the scope for the defective circuits.Also,
when "the power fails from time to time", display on the screen can
be used to confirm the occurrence and to limit the scope for the defective
circuits. Any programmed channels,
channels caption data and some other user defined settings will be erased and
return to factory setting.
TO ACCESS AND TO EXIT SELF CHECK FUNCTION
- TO ACCESS: Produce TV reception screen and, while pressing [VOLUME-] button on the main unit, press [SLEEP] button on the remote controller unit simultaneously.
- TO EXIT: When one of the buttons for channel selection etc. is pressed, the display returns to the normal screen.
SELF CHECK SCREEN DISPLAY
SELF CHECK
|
TC-17LA1
|
||
H10UV
|
OK
|
H21 SOUND
|
OK
|
F30 AVSW
|
OK
|
H34 GC2
|
OK
|
H35 LTP
|
OK
|
H36 PCON
|
OK
|
H90 EEP
|
OK
|
SELF CHECK
|
TC-20LA1
|
||
H10 UV
|
OK
|
H21 SOUND
|
OK
|
H30 AVSW
|
OK
|
H34 GC2
|
OK
|
H36 PCON
|
OK
|
H90 EEP
|
OK
|
ON SCREEN FAULT DISPLAY AND FAULT SECTION
Display
symbol
|
Phenomenon/condition
|
Treatment
method
|
H10
|
No
output of video and audio.
|
Replace
tuner (TNR001A (B-BOARD)).
|
H21
|
No
audio output. Surround function not effective.
|
Replace
IC2300 (AP-BOARD).
|
F30
|
No
video and audio output. Input switching disabled.
|
Replace
IC3000 (AP-BOARD).
|
H34
|
Black
and white stripes pattern. Enhanced back light.
|
Replace
IC4003 (DG-BOARD).
|
H35
|
No
video
|
Replace
IC6400 (DG-BOARD).
|
H36
|
No
video
|
Replace
IC6300 (DG-BOARD).
|
H90
|
Power
interrupted with self-check.
|
Replace
IC1002 (DG-BOARD).
|
Any
button operation or switching off the power will reset the self-check data.
ADJUSTMENT METHOD
- TO ENTER ADJUSTMENT MODE: While pressing [VOLUME-] button of the main unit, press [RECALL] button of the remote control transmitter three times in a row (within 2 seconds).
REMOTE CONTROL BUTTON FUNCTIONS DURING ADJUSTMENT MODE
- “1” button...Main items Selection in forward direction
- “2” button...Main items Selection in reverse direction
- “3” button...Sub items Selection in forward direction
- “4” button...Sub items Selection in reverse direction
TO CANCEL ADJUSTMENT MODE
- Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
CONTENTS OF ADJUSTMENT MODE.
- Value is shown as a hexadecimal number.
- Preset value differs depending on models.
- After entering the adjustment mode, take note of the value in each item before starting adjustment.
Main
item
|
Sub
item
|
Remarks
|
TC-20LA1
|
TC-17LA1
|
MAIN
|
YGAIN
|
Video
level (RF, video, component)
|
97
|
92
|
B-Y
|
Video
level (RF, video, component)
|
9B
|
9C
|
|
R-Y
|
Video
level (RF, video, component)
|
40
|
3F
|
|
FLICKR
|
Panel
flicker (TC-17LA1 Only)
|
--
|
74
|
|
SUB
|
COLOR
|
Sub
color
|
27
|
2C
|
TINT
|
Sub
tint
|
80
|
80
|
|
BACK-L
|
Sub
Back light
|
B0
|
B0
|
|
BRIGHT
|
Sub
Bright
|
800
|
800
|
|
B-Y-G
|
B-Y
Gain
|
40
|
40
|
|
R-Y-A
|
R-Y
demodulation axis
|
00
|
00
|
|
GAMMA
|
R-GAIN
|
Test
Pattern (100% White) Red gain
|
FE
|
FF
|
G-GAIN
|
Test
Pattern (100% White) Green gain
|
FF
|
EE
|
|
B-GAIN
|
Test
Pattern (100% White) Blue gain
|
F2
|
E8
|
|
R-CENT
|
Test
Pattern (50% White) Red gain
|
90
|
5E
|
|
G-CENT
|
Test
Pattern (50% White) Green gain
|
80
|
80
|
|
B-CENT
|
Test
Pattern (50% White) Blue gain
|
7D
|
65
|
|
OPT
|
OPT00
|
(TV)
|
00
|
00
|
RM
|
CODE
|
Remote
Control Transmitter Code
|
A
|
A
|
DVD
|
MTSIN
|
RF
Audio input level
|
20
|
18
|
SEPAH
|
Stereo
separation Hi
|
1A
|
1B
|
|
SEPAL
|
Stereo
separation Low
|
04
|
05
|
