Service Adjustments - Sanyo DS24205 Service Supplement 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.)

2. Service Adjustments:

•
Press the or key to select the desired service menu item you want to
adjust. (See page 4 for On-screen Service Menu.)
•
Use the + or – key or number keys to adjust the data.
The + or – keys will increase or decrease the data sequentially.
The number keys (0 ~ 7) toggle only their respective bits between 1 and 0.
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 – 5 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. 3C SCO (Sub Color) with
4. Select No. 3D STI (Sub Tint) with
5. Select No. 3F SSH (Sub Sharpness) with
6. Select No. 42 VS (V Size) with
7. Select No. 44 GRY7CRS5VLN (Gray / Cross B/W / V Lin) with
8. Select No. 45 HBL5VSC with
9. Select No. 4B BGS5RGD4GD (Bγ / RGγ / G Drive) with
10. Select No. 4D SBI (Sub Bias) with
11. Select No. 57 DCR4BSS2BSG (DC Reset / Black Stretch Start / Black Stretch Gain) with
+ or – key for 02 (hex).
12. Select No. 58 AFC7CBP5 (Auto Flesh / Color BPF Bypass) with
13. Select No. 60 HBL5 (H Blanking Left) with
14. Select No. 83 OPT (AV Option) with
15. Select No. 8E SBO (Sub Bright Offset) with
16. Press the MENU key to turn off the Service Menu display.
SERVICE ADJUSTMENTS
or key. Adjust the data with + or – key for 1D (hex).
or key. Adjust the data with + or – key for 07 (hex).
or key. Adjust the data with + or – key for 05 (hex).
or key. Adjust the data with + or – key for 49 (hex).
or key. Adjust the data with + or – key for EE (hex).
or
or key. Adjust the data with + or – key for 38 (hex).
or key. Adjust the data with + or – key for 00 (hex).
or key. Adjust the data with + or – key for 84 (hex).
or key. Adjust the data with + or – key for 02 (hex).
— 3 —
ITEM NO.
3C
0A
HEX DATA
Figure 1. Service Menu Display
or key. Adjust the data with + or – key for 90 (hex).
key. Adjust the data with + or – key for 0B (hex).
or key. Adjust the data with + or – key for 80 (hex).
TITLE
SCO
00001010
BINARY DATA
(8 bit)
or key. Adjust the data with