Service Adjustments - Sanyo DS32424 Service 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 5 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 and are used to change the Sub-Address. For example to
change bit 5 press the number 5 key. See below.
(b7) (b6) (b5) (b4) (b3) (b2) (b1) (b0)
0 1 0 1 0 1 1 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 5 – 7, Table 1, for detailed bus data information.)
INITIAL BUS DATA SETUP
Note: When IC802 (EEPROM) is replaced, change the following initial reference data for proper TV operation before
attempting service adjustments.
1. Disconnect the AC power cord (AC 120V line).
2. While pressing the MENU key, 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. 40 AFC6HFR (AFC / H Frequency) with
7. Select NO. 41 VTR7HP (V Trans / H Phase with
8. Select NO. 42 VS (V Size) with
9. Select NO. 43 VSP7VPO (V Sync Sep / V Position) with
10. Select NO. 44 CDM5UVL (V Count Dn Mode / V Lin Top) with
11. Select NO. 45 VC5LVL (V Compresion / V Lin Bottom) with
12. Select NO. 46 VSC (V S Correction) with
13. Select NO. 4A RD (Red Drive) with
14. Select NO. 4C BD (Blue Drive) with
15. Select NO. 4D SBI (Sub Bias) with
16. Select NO. 50 OSD (On Screen Display Contrast) with
17. Select NO. 54 FLS (Y/C Filter Mode) with
18. Select NO. 57 YGM6DCR4BSS2BSG (Y Gamma / DC Reset / Black Streak Start / Black Streak Gain) with
Adjust the data with number keys for A1.
SERVICE ADJUSTMENTS
or key. Adjust the data with + or – key for 25.
or key. Adjust the data with + or – key for 0C.
or key. Adjust the data with + or – key for 02.
or key. Adjust the data with number keys for BF.
or key. Adjust the data with + or – key for 12.
or key. Adjust the data with + or – key for 2F.
or
or key. Adjust the data with + or – key for 0C.
or key. Adjust the data with + or – key for 3A.
or key. Adjust the data with + or – key for 3A.
or key. Adjust the data with + or – key for 44.
or
or key. Adjust the data with + or – key for 83.
— 3 —
TITLE
SCO
3C
ITEM NO.
Figure 1. Service Menu Display
BINARY DATA
(8 bit)
key. Adjust the data with number keys for 20.
or key. Adjust the data with number keys for 0F.
or key. Adjust the data with number keys for 4A.
key. Adjust the data with + or – key for 06.
1C 00011100
BINARY DATA
(8 bit)
HEX DATA
or key.