HP L1940 Service Manual page 17

Re-programming Analog DDC IC
Step 1: After initialize alignment box, connecting all
cables and box as shown in Fig. 10.
PC
Printer
Port
To PC Video port (D-sub)
Step 2: Read DDC data from monitor
1. Click icon as shown in Fig. 11 from the tool bar to bring up
the Channels "Configuration Setup" windows as shown in Fig. 11.
Click this button
2. Select the DDC2Bi as the communication channel.
As shown in Fig. 12.
3. Click OK button to confirm your selection.
4. Click icon (Read EDID function) to read DDC EDID data from
monitor. The EDID codes will display on screen as shown in Fig. 13.
DDC Instructions
1=Power connector
2=D-SUB connector
DC Power
8-12V
1
2
To
Monitor
To PC
Fig. 11
Step 3: Modify DDC data (verify EDID version, week,
year)
Fig. 10
Click (new function) icon from the tool bar, bring up
Step 1 of 9 as shown in Fig. 14 .
EDID46 DDC application provides the function selection and
Step 4: Modify DDC data (Monitor Serial No.)
1. Click Next , bring up Fig. 15.
Fig. 12
HP L1940
Go to cover page
Fig. 13
Select and fill out,
If necessary.
Fig. 14
17
Fig. 15