Factory Reset; Factory And Service Adjustments; Final Assembly Adjustment (Adjustment Order); Preheat Run Conditions - Hitachi 50VS69A Service Manual

1-3 FACTORY RESET OPERATION
NOTE: The execution of this function returns the
adjustment made by the customer , this will return all the
adjustments to the original shipping conditions.
Procedure
(1) Enter Adjustment mode by the method described in
sub-item 1.1 from item 1 ("Adjustment
procedure start up").
(3) Select FACTORY RESET.
(4) Activate FACTORY RESET by pressing
for more than 3 seconds.
(5) Check the following process for FACTORY RESET
operation.
·Process of FACTORY RESET operation.
‡@
The screen is colored MAGENTA when FACTORY
RESET start.
‡A
The screen is colored green when FACTORY
RESET finish normally.
‡B
The screen is be colored black when FACTORY
RESET finish abnormally.
(6) Do not unplug from AC outlet until this operation
is complete and do not perform any key operation
either, after this operation each factory setting and
all adjust mode data should reset to delivery settings
automatically.
(7) After FACTORY RESET,
unplug and plug AC cord and then all settings and data
are updated.
(8) When LCD turns ON , it will tune CH03 this is the
complete operation of FACTORY RESET process.

1-4 FACTORY AND SERVICE ADJUSTMENTS

The adjustment item that is affected by the memory
initialize operation is shown below:
* JIG. R/C FACTORY PRESET CODE:92
MEMORY INITIALIZE and FACTORY PRESET
ITEM MEMORY
INITIALIZE
H POSITION ADJUST DATA INITIALIZE
V POSITION ADJUST DATA INITIALIZE
RGB(480p) ADJUST DATA INITIALIZE
SETTING DATA FOR EACH DEVICE INITIALIZE
BBE EFFECT SETTING DATA INITIALIZE
AUDIO AGC SETTING DATA INITIALIZE
V CHIP RATING SETTING DATA INITIALIZE
CCD SETTING DATA INITIALIZE
FACTORY RESET ITEM INITIALIZE
LAMP TIME INITIALIZE
Accumulate TIME INITIALIZE
GHOST ADJUST DATA INITIALIZE
FLICKER ADJUST DATA(V.COM) INITIALIZE
NRSH ADJUST DATA INITIALIZE
COLOR UNIFORMITY NOT INITIALIZE
GAMMA CORRECTION NOT INITIALIZE
V.REF (EPSON PANEL ONLY ) NOT INITIALIZE
Set to "No"
Automatic Power saving- Yes/No
for heat-run
NOTE: (1) If there is a different value than shown in I2C Parameter List, for
fixed data, adjust it using ,
BACK TO ADJUSTMENTS
cursor key

FACTORY RESET

REMARKS
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
INITIALIZE
INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
NOT INITIALIZE
Set to Yes
buttons (only in this case)
2 Final ASSEMBLY ADJUSTMENT
2 - 1 PRE HEAT RUN CONDITION
Heat run should be performed with moving picture or no signal.
And disable side panel or top/bottom panel.
Do NOT use stock market quotation, computer graphics,
and other fixed (non-moving) image.
Order
SUB CONTRAST ADJUSTMENT (RGB)
1
2 RASTER POSITION ADJUSTMENT
FLICKER ADJUSTMENT
3
4 GHOST ADJUSTMENT
5 NRSH ADJUSTMENT
6 White Balance (GAMMA) ADJUSTMENT
7 WHITE UNIFORMITY ADJUSTMENT
8 DOT STRIPE CHECKING and ADJUSTMENT
9 SUB GHOST CHECKING and ADJUSTMENT
10 HORIZONTAL CROSS TALK CHECKING
and ADJUSTMENT
11 LAMP DOOR PROTECTION OPERATION
CHECK
12 LAMP HOLDER PROTECTION OPERATION CHECK
13 HIGH TEMPERATURE PROTECTION
OPERATION CHECK
14 TEMPERATURE SENSOR OPERATION CHECK
15 HDMI ADJUSTMENT / EDID DATA
INSTALLATION
TEMPERATURE SENSOR DATA SETTING
16
17
18
19
20
2-2 SUB-CONTRAST ADJUSTMENT
Preparation
Receive Sub-contrast adjustment signal (Fig. 1).
Adjustment
(1) Select 'RGB' of Service Adj. Menu.
for over 2 seconds to adjust auto-
Press
matically. The OSD will disappear and return
when the adjustment is finished. Change the
format from 480p to 480i and repeat the adjustment.
Fig. 1.
Half Black, half White
V2
Format 1: 525 (480p)
Format 2: 525 (480i)
Displayed pattern
BLACK
41
LC67
Table 2.1 Final adjustment order
Adjustment Item
Component signal
Input3 or Input4
V =1Vpp
1
V1 V =0.7Vpp
2
WHITE
Signal
HALF B&W 480p,480i
Circle pattern signal.