[2]
- H|V center adjustment may be necessary if optical block is replaced. Unlike previous G/W models H/V center is adjusted by the Rook ICs on the C board.
- Since adjustments takes place at the end of the video processing chain there is no need to adjust H\V Center for multiple Wide Modes.
- Use the below service items to adjust.
- 1 TG [Device]: VST_POS for Vertical Center. Initial Data = 12.
- Adjust [1-25] Primary item for V center adjustment.
- First try to adjust with VST_POS if you must change more than +13 | -11 then start to change with FMDVPOS. If "VST_POS is changed greater than these limits then there could be issues with Gamma.
- HST_POS [for H center]; Initial data = 261.
- 17 FMD (Device): FMDVPOS (Secondary method for Vertical center) Initial data = 8
- Adjust [1-17] (Additional item for V center adjustment)
- Check HV center for mono-scope pattern with 'Wide" mode set to Full. (QM Cross hair test pattern #11 can be used if no other source is available.
- To adjust H\V center;
- Enter service mode as described in the earlier post.
- Press [Jump] button on the remote 'thrice' to select "PANEL" service mode.
- Scroll Device "TG" by pressing [2] button one time.
- Once the Device "TG", scroll to item [4] "VST_POS" to adjust vertical center.
- Use [3] and [6] buttons to adjust as needed.
- Scroll to item '5' "HST_POS" to adjust horizontal center.
- Use [3] & [6] buttons to adjust as needed. Note: After adjusting press [Mute] > [Enter] to write new settings into memory.
LAMP TIMER
To check lamp timer take the following steps:
- Enter Service Mode. [Described in the previous post]
- Press the [Jump] button thrice to arrive the 'PANEL' service mode.
- Once in 'panel service mode' press the [2] or [5] button, to arrive at Device 20 "Timer".
- Lamp time is shown to the right.
TO RESET LAMP TIMER
- Scroll to item [1] LMPRST by pressing [1] button.
- Toggle the data from [0] to [1] with the {3} button, and write the changes by pressing [mute] > [enter].
- To check operation time, scroll to item '2' OPERAT by pressing the [1] button.
The lamp and operation time are written to NVM after power off is performed by the remote or front panel button. If AC ON/OFF is performed lamp and operation time accrued since last power On are NOT written in the NVM.
SYSTEM STATUS
To view the system status page:
Enter service mode [display => 5 + Vol + => Power].- Press [Jump] button once to arrive at DM Service Mode.
- Press [3] button once to display the system status screen.
Color code chart:
Color
|
Meaning (Standard)
|
WHITE
|
LABEL TEXT
|
CYAN
|
INFORMATION
|
GRAY
|
DISABLED
|
GREEN
|
Ok/ Good/Valid
|
YELLOW
|
WARNING
|
RED
|
ERROR
|
CONFIRMING TUNING STATUS
Enter service mode.- Press [Jump] button once to arrive at DM Service Mode.
- Press [3] button "7" times to display the Front End Screen.
Key items to check include:
- Verify the In Band OOB status are "LOCK".
- Signal to Noise Ratio [SNR]: There is no hard value to confirm signal strength is at an acceptable level but as a rule of thumb a SNR of >20 is usually acceptable. SNR of 25->30 is preferred.
- If uncorrected errors is high, it could indicate a weak of noisy signal is being received and the DMB is unable to correct. There is no hard value or threshold value.
CONFIRMING HOST ID AND I.LINK STATUS
- Enter the service mode.
- Press the [Jump] button once to arrive DM service mode.
- Press [3] button "6" times to display the ATSC module Boot Diagnosis.
USER/SERVICE DATA MEMORY STICK READ | WRITE FEATURE
- The digital module service mode includes a feature that will allow the User \ Service data stored within the digital module to be read/written to a memory stick. This feature allows for a module to be replaced by Service Personal while preserving the user's TV confutation data. This feature will store/load both the factory default data, as well as the user's current settings.
WRITING USER | SERVICE DATA TO MEMORY STICK
When DMB is replaced user data can be saved to memory stick as follows:
- Enter Service Mode.
- Once in service mode, press the [Jump] button on the remote to enter DM service mode. you will be in the "QM" information screen.
- Scroll down to item "12' [WUSR] using the [1] button.
- Insert a memory stick and toggle the data from 0-1 using the [3] button.
USER MENU H/V ADJUSTMENT
To adjust the user Graphics position:
- Enter service mode.
- Press [Jump] button once to arrive DM service mode.
- Scroll to iten '8' GFXX or item '9' GFXY with the '1' button
- Adjust graphics position for each item by changing data with the [3] and [6] buttons.
- 8 GFXX [H position]
- 9 GFXY [P position]