Service Adjustments - Sanyo DS25520 Manual

GENERAL
This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments.
To enter the Service Menu, first disconnect the AC power cord. Then while pressing the MENU key on the front control panel, recon-
nect the AC power cord. The adjustments can now be made with the remote control or front control panel keys.
ON-SCREEN SERVICE MENU SYSTEM
1. Enter the Service Menu:
•
While pressing the MENU key on the front control panel, reconnect the AC power cord. The Service Menu Display will now
appear. (See Figure 1.)
NO. DATA
XX OPT XXX XXXXXXXX
TITLE BINARY DATA
(8 bit)
ITEM NO.
DECIMAL DATA
Figure 1. Service Menu Display

2. Service Adjustments:

•
Press the or key to select the desired service menu you want to adjust. (See page 4 for On-screen Service Menu.)
•
Use the + or – key to adjust the data.
3. Exit from the Service Menu:
•
Press the MENU key to turn off the Service Menu display.
IC802 (EEPROM) REPLACEMENT
When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation.
However, the bus data should be checked and some bus data should be set up before attempting the service adjustments.
(See pages 4 – 6 for detailed information.)
INITIAL BUS DATA SETUP
Note: When IC802 (EEPROM) is replaced, change the following initial reference data for proper TV operation before
attempting the service adjustments.
1. Disconnect the AC power cord (AC 120V line).
2. While pressing the MENU key on the front control panel, reconnect the AC power cord.
The Service Menu display will now appear.
3. Select NO. 03 HP (H Phase) with
4. Select NO. 04 VS (V Size) with
5. Select NO. 05 VPO (V Position) with
6. Select NO. 07 VLN (V Lin) with
7. Select NO. 10 VSC (V S Correction) with
8. Select NO. 11 HBL (H Blanking Right) with
9. Select NO. 12 HBL (H Blanking Left) with
10. Select NO. 28 PRE (Preshoot Adj) with
11. Select NO. 37 AF (Auto Flesh) with
12. Select NO. 57 OPT (SA Option ) with
13. Select NO. 58 OP2 (SA Option 2) with
14. Press the MENU key to turn off the Service Menu display.
SERVICE ADJUSTMENTS
or key. Adjust the data with + or – key for 14.
or key. Adjust the data with + or – key for 55.
or key. Adjust the data with + or – key for 0.
or key. Adjust the data with + or – key for 11.
or key. Adjust the data with + or – key for 6.
or key. Adjust the data with + or – key for 1.
or key. Adjust the data with + or – key for 5.
or key. Adjust the data with + or – key for 3.
or key. Adjust the data with + or – key for 1.
or key. Adjust the data with + or – key for 100.
or key. Adjust the data with + or – key for 32.
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