Zenith P50W38, Service Manual

Page: 18 / 81

- 18 -
* [Cr]: Carriage Return
ASCII code ‘0x0D’
* [ ]: ASCII code ‘space (0x20)’
Transmission [command2[ [] [Set ID] [] [OK][Data][x]
The Set transmits ACK (acknowledgement) based on this
format when receiving normal data. At this time, if the data
is data read mode, it indicates present status data. If the
data is data write mode, it returns the data of the PC
computer.
OK Acknowledge [command2[ [] [Set ID] [] [OK][Data][x]
The Set transmits ACK (acknowledgement) based on this
format when receiving normal data. At this time, if the data
is data read mode(0xFF), it indicates present status data. If
the data is data write mode, it returns the data of the PC
computer.
Error Acknowledge
[command2[ [] [Set ID] [] [OK][Data][x]
The Monitor transmits ACK (acknowledgement) based on
this format when receiving abnormal data from non-viable
functions or communication errors
* Data [01]: illegal code
[02]: not support function
[03]: wait more time
:
Command Reference List
Relation COMMAND of factory adjustment
EX) R Adjustment (Command1: j, Command2: a)
$
(high)PC white balance adjustment
[j][a][][Set ID][][Data][Cr] Data:0H~64H
Acknowledge
[a][][Set ID][][OK][Data][x] Data:0H~64H
$
Currently is transmission
$
receiving the R-GAIN Data
which to the EEPROM.
Transmission
[j][a][][Set ID][][FF][Cr]
Acknowledge
[a][][Set ID][][OK][Data][x] Data:0H~64H
:
Input Select (Command: b)(Input Main Picture)
$
Select the
input signal of SET
It is Identical function ‘INPUT‘ Button on the Remote Control.
[k][b][][Set ID][][Data][Cr]
Data 0:RGB1, 1:Component, 2:VIDEO, 3:S-VIDEO, 4:RGB2
Acknowledge[b][][Set ID][][OK][Data][x]
Data 0:RGB1, 1:Component, 2:VIDEO, 3:S-VIDEO, 4:RGB2
7. DDC Data Input
7-1. Required Test Equipment
(1) A jig for adjusting PC, DDC. (PC serial to D-sub.
Connection equipment)
(2) S/W for writing DDC(EDID data write & read)
(3) D-Sub 15P cable, D-Sub to DVI Connector (Connect to
DVI Jack)
7-2. Setting of Device
7-3. Preparation for Adjustment
(1) Set devices as above and turn the PC, jig on.
(2) Put S/W for writing DDC (EDID data write & read) into
operation. (operated in DOS mode.)
7-4. Sequence of Adjustment
(1) DDC Data Input for Analog-RGB
1) Put the set on the table and turn the power on.
2) Connect PC Serial to D-sub 15P Cable of JIG for DDC
Adjustment to RGB1 terminal (D-Sub 15Pin).
3) Operate S/W for DDC record and select DDC Data for
Analog RGB in Model Menu.
4) Operate EDID Write command.
5) Operate EDID Read command and check whether
Check Sum is OK.
6) If Check Sum is NG, repeat 3) ~ 4).
7) If Check Sum is OK, DDC Data for Analog-RGB input is
completed.
ADJUSTMENT INSTRUCTIONS
Command1 Command2
30. PC-R Adjustment i a
31. PC-G Adjustment i b
32. PC-B Adjustment i c
33. TV-R Adjustment i d
34. TV-G Adjustment i e
35. TV-B Adjustment i f
36. COM-R Adjustment i g
37. COM-G Adjustment i h
38. COM-B Adjustment i i
39. PC-R Adjustment l j
40. PC-G Adjustment l k
41. PC-B Adjustment l l