Hitachi 55HDS52/DW1-U, Service Manual

Page: 30 / 140

29
DW1U
1 ADJUSTMENT PROCEDURE START-UP
The 55HDT5
2 55HDS52
and
55
HD
X62
PDP TV sets
pass
thr
o
ugh adjustment procedures during
the
assembly
process. These adjustments must be done to assure the
best performance of the PDP set for the consumer.
Also, after servicing, these same adjustments must be
done. The adjustments are all made through the I
2 C bus
by changing data in the Adjustment mode menu.
Table 2 on pages 38-46 shows the complete parameter
list with a brief description, signal format, the adjustment
range and the initial data.
1.1 HOW TO GET TO ADJUSTMENT MODE
Chassis adjustment
mode
can be
access by pressing
the R/C keys MENU + MENU + 8 + SELECT to enter
adjustment mode. For some parameters the only way
to see them is by selecting the parameter number
than
pressed SELECT in order to see it; then DATA can be
change if other parameter needs to change then press
key then repeat the same procedure
.
Other way to access this mode is by use JIG R/C code: (9C Hex).
To escape from Adjustment Mode press “INPUT” key on Side
panel or EXIT key of R/C to exit service adjustment mode.
1.2 CHANGING DATA AND SELECTING ADJUSTMENT
CODE
When the PDP set is in adjustment mode, the cursor , ,
, and MENU keys of the remote control or front panel
may be used as the adjustment keys.
A. Use any Hitachi remote control when making an
adjustment.
, keys are used for selecting adjustment
item
.
, keys are used for changing data values.
MENU key is used to advance through the adjustment
mode menus and pages.
Remote Control Buttons
Change
Selection (Up)
Increase
Data Value
Change
Selection (Down)
Increase
Data Value
POWER
CH
+
CH
-
VOL
+
VOL
-
INPUT/EXIT
MENU/SELECT
SUB BRIGHT
WHITE BAL HIGH
WHITE BAL MED
WHITE BAL STD
WHITE BAL B/W
H POSITION **
V POSITION **
FACT RESET
B. To make a selection, use the
NUMBER pad
on the
PDP
R
/
C
; example : select SEINE press 69 then SELECT
the DATA shown is "EB" ; if this DATA needs to be change
press the keys to modify, when finish press SELECT
key to store the new DATA value.
normal condition.
C. After finishing the necessary adjustment press the R/C
EXIT key or EXIT key on the side panel.
Adjustment mode is released and PDP set returns to
normal condition.
, ,
2 MEMORY INITIALIZE
2.1 MEMORY INITIALIZE OPERATION
NOTE: The execution of this function returns the
adjustment codes to the preset values, therefore,
adjustment data will be lost .
Procedure
(1) Enter Adjustment mode by the method described in
sub-items 1.1 and 1.2 from item 1 (“Adjustment
procedure start up”).
(2) Get to the second page of Adjust Mode by pressing
remote control “Menu” key once, or with either the
R/C or front panel
, cursor keys several times.
(3) Select MEMORY INIT adjust code.
(4) Activate MEMORY INIT by pressing
cursor key for
more than 3 seconds.
(5) Check the following process for initialization opera-
tion.
BACK TO ADJUSTMENTS
GI