Service Adjustments - Sanyo AVM-2751S 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.
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, the Service Menu NO. 03 HP (H Phase), NO. 05 VPO (V Position), NO. 07 VLN
(V Lin), NO. 10 VSC (V S Correction), NO. 14 VC (V Comp), NO. 21 SBI (Sub Bias), NO. 24 FLS (Filter System),
NO. 28 PRE (Preshoot Adj), NO. 29 WP (White Peak Limiter), NO. 32 BSG (Black Str Gain), NO. 34 DCR (DC Reset),
NO. 37 AF (Auto Flesh), NO. 41 RYA (R-Y/B-Y Angle), NO. 55 STI ( Sub Tint), NO. 56 SSH (Sub Sharp), NO. 57 OPT
(SA Option ), NO. 58 OP2 (SA Option 2), NO. 59 HR (OSD Position), NO. 60 ATT (Input Level), and NO. 63 SBO (Sub
Bright Offset) 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. 03 HP (H Phase) with
4. Select NO. 05 VPO (V Position) with
5. Select NO. 07 VLN (V Lin) with
6. Select NO. 10 VSC (V S Correction) with
7. Select NO. 14 VC (V Compression) with
8. Select NO. 21 SBI (Sub Bias) with
9. Select NO. 24 FLS (Filter System) with
10. Select NO. 28 PRE (Preshoot Adj) with
11. Select NO. 29 WP (White Peak Limiter) with
12. Select NO. 32 BSG (Black Str Gain) with
13. Select NO. 34 DCR (DC Reset) with
14. Select NO. 37 AF (Auto Flesh) with
15. Select NO. 41 RYA (R-Y/B-Y Angle) with
16. Select NO. 55 STI (Sub Tint) with
17. Select NO. 56 SSH (Sub Sharp) with
18. Select NO. 57 OPT (SA Option ) with
19. Select NO. 58 OP2 (SA Option 2) with
20. Select NO. 59 HR (OSD Position) with
21. Select NO. 60 ATT (Input Level) with
22. Select NO. 63 SBO (Sub Bright Offset) with
23. Press the MENU key to turn off the Service Menu display.
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.)
NO.
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.
SERVICE ADJUSTMENTS
or key. Adjust the data with + or – key for 8.
or key. Adjust the data with + or – key for 25.
or key. Adjust the data with + or – key for 15.
or
or
or key. Adjust the data with + or – key for 54.
or
or key. Adjust the data with + or – key for 3.
or
or
or key. Adjust the data with + or – key for 1.
or key. Adjust the data with + or – key for 1.
or
or key. Adjust the data with + or – key for 19.
or key. Adjust the data with + or – key for 8.
or key. Adjust the data with + or – key for 0.
or key. Adjust the data with + or – key for 98.
or key. Adjust the data with + or – key for 20.
or key. Adjust the data with + or – key for 7.
DATA
key. Adjust the data with + or – key for 13.
key. Adjust the data with + or – key for 7.
key. Adjust the data with + or – key for 1.
key. Adjust the data with + or – key for 2.
key. Adjust the data with + or – key for 2.
key. Adjust the data with + or – key for 2.
or key. Adjust the data with + or – key for 2.
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