Sanyo DS31590, Service Manual

Page: 3 / 31

GENERAL
This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments.
ON-SCREEN SERVICE MENU SYSTEM
1. Enter the Service Menu:
•
While pressing the MENU key, reconnect the AC power cord. The Service Menu Display will now appear. (See Figure 1
below.)
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.
SERVICE ADJUSTMENTS
— 3 —
NO. DATA
XX OPT XXX XXXXXXXX
NO. DATA
XX XXX XXX
No. 1, 3-5, 7-12, 16, 17, 21-28, or 31-40
TITLE
DECIMAL DATA
(ZERO SUPPRESSED)
Figure 1. Service Menu Display
OR
NO. DATA
XX XXX X
No. 2, 6, 13-15 or 18-20
TITLE
BINARY
DATA
No. 29, 30
TITLE
BINARY DATA
(8 bit)
OR
DECIMAL
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, the Service Menu NO. 01 HP (H Phase), NO. 14 AF (Auto Flesh), NO. 24 AG
(AFC Gain), NO. 26 SCO (Sub Color), NO. 27 STI (Sub-Tint), NO. 29 OPT (Option 1), NO. 30 OP2 (Option 2), and NO. 31
HR (OSD Display H-Position) should be set up for proper TV operation before attempting the 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. 01 HP (H Phase) with
▲
or
▼
key. Adjust the data with + or – key for 20.
4. Select NO. 14 AF (Auto Flesh) with
▲
or
▼
key. Adjust the data with + or – key for 1.
5. Select NO. 24 AG (AFC Gain), with
▲
or
▼
key. Adjust the data with + or – key for 0.
6. Select NO. 26 SCO (Sub Color) with
▲
or
▼
key. Adjust the data with + or – key for 8.
7. Select NO. 27 STI (Sub Tint) with
▲
or
▼
key. Adjust the data with + or – key for 19.
8. Select NO. 29 OPT (Option 1) with
▲
or
▼
key. Adjust the data with + or – key for 36.
9. Select NO. 30 OPT2 (Option 2) with
▲
or
▼
key. Adjust the data with + or – key for 72.
10. Select NO. 31 HR (OSD Display H-Position) with
▲
or
▼
key. Adjust the data with + or – key for 47.
11. Press the MENU key to turn off the Service Menu display.