4
Alignment Procedures
Turning ON the unit
1. Click on “Preset & read” to ensure that the Cabernet can be found on the USB.
Message should show “UUT found”, if not check the connection. Also ensure that the
check box “Preset Contrast” is ticked.
2. Click on the button “UUT ON” to power ON the UUT. Important note: Must click
on the button “UUT OFF” to power OFF the UUT after adjustment. Failure to click
“UUT OFF” will result in higher power consumption in sleep mode and abnormal
power ON operation (i.e. degauss activated before powering ON the Mac) when
connected to a Mac CPU.
Data Upload
1. Equipment: Mac with USB.
2. Condition:
(a) UUT must be able to communicate through the USB.
3. Select [Rework>Factory Data>Upload All] to upload the EEPROM contents from a
bad video board.
4. The EEPROM contents from the bad video will be stored in a factory data file format.
The EEPROM data in this file can be transferred to the new video board by using the
download function described next.
5. If the contents from the bad video board cannot be uploaded, then the alternative is to
use the factory backup files available at Apple’s ftp site for Cabernet. The address for
the ftp site will be made known later. Use the unit serial number to search for the
unit’s factory backup file.
Data Download
1. Equipment: Mac with USB.
2. Condition:
(a) UUT must be able to communicate through the USB.
3. Select [Rework>Factory Data>Download All] to download the EEPROM contents
from a video or a factory backup file to the new video board. Use this function to
reduce the amount of adjustment needed after a change of the video board .by
searching it using the UUT serial number.
4. Power OFF and ON the DC power supply to the UUT for the download EEPROM
data to take effect.
5. Check through all the adjustments against the specifications to ensure that the
downloaded EEPROM data work with the new video board.
6. Re-adjust when necessary.
B+ voltage check and adjustment
1. Equipment and adjustment procedure is the same as detailed in the service manual.
2. Condition:
(a) Timing mode is 1024x768@99Hz – select [Quantum Data>801 Formats>Cab 3 =
1024x768@99Hz]
(b) Pattern is White – select [Quantum Data>801 Patterns>White Page].
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