Zenith P50W38 Service Manual - Page 18

ADJUSTMENT INSTRUCTIONS * [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 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 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 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. 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. - 18 -