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.
3. Exit from the Service Menu:
•
Press the MENU key to turn off the Service Menu display.
SERVICE ADJUSTMENTS
— 3 —
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
▲
or
▼
key. Adjust the data with + or – key for 25.
4. Select NO. 3D STI (Sub Tint) with
▲
or
▼
key. Adjust the data with + or – key for 0C.
5. Select NO. 3F SSH (Sub Sharpness) with
▲
or
▼
key. Adjust the data with + or – key for 02.
6. Select NO. 40 AFC6HFR (AFC / H Frequency) with
▲
or
▼
key. Adjust the data with number keys for BF.
7. Select NO. 41 VTR7HP (V Trans / H Phase with
▲
or
▼
key. Adjust the data with + or – key for 12.
8. Select NO. 42 VS (V Size) with
▲
or
▼
key. Adjust the data with + or – key for 2F.
9. Select NO. 43 VSP7VPO (V Sync Sep / V Position) with
▲
or
▼
key. Adjust the data with number keys for 20.
10. Select NO. 44 CDM5UVL (V Count Dn Mode / V Lin Top) with
▲
or
▼
key. Adjust the data with number keys for 0F.
11. Select NO. 45 VC5LVL (V Compresion / V Lin Bottom) with
▲
or
▼
key. Adjust the data with number keys for 4A.
12. Select NO. 46 VSC (V S Correction) with
▲
or
▼
key. Adjust the data with + or – key for 0C.
13. Select NO. 4A RD (Red Drive) with
▲
or
▼
key. Adjust the data with + or – key for 3A.
14. Select NO. 4C BD (Blue Drive) with
▲
or
▼
key. Adjust the data with + or – key for 3A.
15. Select NO. 4D SBI (Sub Bias) with
▲
or
▼
key. Adjust the data with + or – key for 44.
16. Select NO. 50 OSD (On Screen Display Contrast) with
▲
or
▼
key. Adjust the data with + or – key for 06.
17. Select NO. 54 FLS (Y/C Filter Mode) with
▲
or
▼
key. Adjust the data with + or – key for 83.
18. Select NO. 57 YGM6DCR4BSS2BSG (Y Gamma / DC Reset / Black Streak Start / Black Streak Gain) with
▲
or
▼
key.
Adjust the data with number keys for A1.
SCO
3C
1C 00011100
Figure 1. Service Menu Display
ITEM NO.
TITLE
BINARY DATA
(8 bit)
HEX DATA
(b7) (b6) (b5) (b4) (b3) (b2) (b1) (b0)
0 1 0 1 0 1 1 0
BINARY DATA
(8 bit)
