White Balance Adjustment - Zenith P50W38 Service Manual

2) After turning the RV401, voltage of D.M.M adjustment as
same as Vs voltage which on the label of the PCB Right/Top.
(Deviation : ±0.5V)
P805 P805 P805
Va Va Va
GND GND GND
NC NC NC
Vs Vs Vs
P804 P804 P804
DMM DMM
+ - - + -
<Fig 1> Connection Diagram of Power Adjustment for Measuring

6. White Balance Adjustment

6-1. Required Equipment
Color analyzer (CA-100 or same product)
6-2. Connection Diagram of Equipment for
Measuring
(Manual Adjustment)
R-L 70
G-L 70
R-M 128
G-M 128
High Light
R-H 216
G-H 216
216 Gray Level
105~115Cd/§‡
<Fig 2> Connection Diagram of Manual Adjustment(High Light)
ADJUSTMENT INSTRUCTIONS
RV401 RV401 RV401
Vs ADJ Vs ADJ Vs ADJ
RV601 RV601 RV601
Va ADJ Va ADJ Va ADJ
COLOR
ANALYZER
TYPE;CA-100
RGB Signal Input
PDP MONITOR
MSPG-2100 or
MSTG-5200
6-3. White Balance Adjustment
Operate the Zero-calibration of the CA-100, then stick sensor
O
to PDP module surface when you make adjustment.
For manual adjustment, it is also possible by the following
O
sequence.
(1) Select WHITE PATTERN of HEAT RUN mode by pressing
POWER ON KEY on service remote control then
operate HEAT RUN more than 15 minute.
(2) Supply 216Gray Level, 50% size length and breadth signal to
RGB input. (Refer to Fig 2)
(3) W/B adjustment must be adjusted only High Light and then
save the adjustment value with Y Key.
(4) To adjust High Light, stick sensor to 216 Gray Level (or 105-
115 Cd/m
and press T, U on R/C in adjustment mode to select R-L or G-
L, press VOL +, - Key and adjust it until color coordination
becomes as below.
X: 0.275±0.003, Y: 0.280±0.003
Color temperature: 11,500°K±500°K
(5) Exit adjustment mode using Y Key.
6-4. RS-232C Communication Protocol
& Transmission Parameter
(1) Communication Parameter
1) Communication Protocol & Transmission Parameter
:
Communication Parameter
- Data Length: 8bit
- Parity: none
- Stop bit: 1bit
- Band Rate: 115200bps(UART)
- Communication code: ASCII code
[
2) Transmission $ Receiving Protocol
Transmission[Command1][Command2][][Set ID][][Data][Cr]
* [Command1]: First command to control PDP Monitor (j or
* [Command2]: Second command to control PDP Monitor
* [Set ID]: You can adjust the set ID to choose desired
Window
[
* [Data] : To transmit command data.
[
- 17 -
2
) Pattern, press ADJ Key on R/C for adjustment
Using Crossed(reverse) Cabel
k)
(a,b,c,....)
monitor ID number in special menu. Adjustment range
is 1 ~ 99. When selecting Set ID '0', every connected
set is controlled.
Set ID is indicated as decimal (1~99) on menu and as
Hexa decimal (0x0~0x63) on transmission/receiving
protocol.
Transmit 'FF' data to read status of command.