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Service Manual
Service mode (electronic controls)
This receiver has electronic technology using the I²C
bus concept. It performs as a control function and it
replaces
many
mechanical
controls.
Instead
of
adjusting mechanical controls individually, many of the
control functions are now performed by using “on
screen display menu”. (The service adjustment
mode.)
Note:
It is suggested that the technician
reads
all
the
way
through
and
understand the following procedure for
entering/exiting
the
service
adjustment mode; then proceed with
the
instructions
working
with
the
receiver. When becoming familiar with
the procedure, the flow chart for
service mode may be used as a quick
guide.
Quick entry to service mode:
When minor adjustments need to be done to the
electronic controls, the method of entering the service
mode without removal of the cabinet back is as follows
using the remote control:
1.
Select SET-UP icon and select CABLE mode.
2.
Select TIMER icon and set SLEEP time for 30 Min.
3.
Press “ACTION” twice to exit menus.
4.
Tune to the Channel 124.
5.
Adjust VOLUME to minimum (0).
6.
Press VOL
(decrease) on receiver. Red “CHK”
appears in upper corner.
Note: After receiver is set into service mode,
set TIMER back to NO.
7.
Press POWER on the remote control to display
the service adjustment modes menu, select
adjustment by pressing the VOL right/left buttons
and CH up/down buttons on the remote and
ACTION to enter the adjustment.
Note:
Some adjustments are available only
in some modes (480i, 480p, 1080i); it
is needed to apply the format; For
some
adjustments
is
required
to
perform adjustment for each format;
convergence
adjustment
must
be
perform for 480i-p (same for interlace
& progressive), 1080i and ZOOM 480i.
A 1080i, 480p, 480i pattern can be
obtained from Panasonic’s TU-DST51
set-top box DTV decoder.
Exiting the service mode:
This PTV goes out from service mode when it is
unpluged or turned OFF. To exit the service mode, turn
the TV OFF or unplug the PTV from AC.
Other method
Press
ACTION
and
POWER
on
the
receiver
simultaneously for at least 2 seconds.
The receiver momentarily shuts off; then comes back
on tuned to channel 3 with a preset level of sound.
Any programmed channels, channels caption data and
some others user defined settings will be erased when
exited by pressing ACTION and POWER on receiver.
To check colors:
Press RECALL on the remote control when in service
mode (red “CHK” is displayed) to enter the purity field
check mode.
To toggle between aging and service
modes:
While the “CHK” is displayed on the left top
corner of the CRT, pressing “ACTION” and
“VOL” UP on the TV simultaneously will toggle
between the modes. Red “CHK” for service
mode and yellow “CHK” for Aging.
MODE
480I
480P
1080I
4:3
16:9
DW
HX
WX
MTS
MTSIN SEPAL
SEPAH
CLOCK CLOCK
VIDEO
COLOR
BRIGHT
TINT
CONT
B-Y_G
R-Y_A
CUT R
CUT B
I-ABL
C_OFF
R DR
B DR
HDEF
VLIN
VSIZE
H POS H WID
H CORR
VCORR
PCC
EWCOR
EWTRA
VDEF
CONV
MUTE
COARS
FINE
VSYM
V-S
V-I
DAF
OTHER
H-PAR
ACL
HHS
W-POS LIMIT
V-PAR
V-SAW
Figure 16. Service mode menu adjustments.
IMPORTANT NOTE:
Always check that the PTV exits
the service mode.
Press RECALL again to select desired field.
NORMAL
SCREEN
WHITE
SCREEN
RED
SCREEN
GRN.
SCREEN
BLUE
SCREEN
Figure 17. Colors check.
Содержание PT-51HX42CF
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