Option Set; Function Option Bit Setting - Changhong Electric 21NF55 Service Manual

SCON 20
MCON 30
SCOL 32
OP1 BF
OP2 09
OP3 FF
OP4 F6
OP5 76
OP6 3C
INIT
VG2
VSD
STS0/1/2
Notes:
①
The items remarked with " *" , not affecting functions of the whole set, can be adjusted depending on models.
②
The items remarked with " ***" , affecting functions of the whole set, can be adjusted depending on functions of
models.
③ To write in logo, use the ↓/↑buttons to highlight an adjustment and the ←/→ buttons to adjust.
④ The data sheet may differ dependent on different models.
⑤ The data sheet may differ dependent on different CRTs for the same model.

6.3 Option set

With remote control system software TDA935X, all options can be set in the SERVICE mode and
stored in EEPROM. Data related to picture, sound and geometric adjustment are also stored in
EEPROM.
Bit Item
0 OP_HOTEL
1 OP_236
2 OP_NTSC
3 OP_AV2
4 OP-SVSH
OP1
5 OP-DVD
6 OP-RGB
7 OP-OSO
OP2 0 OP_AVL
SERVICE MANUAL
Sub contrast
Contrast Max.
Sub color
Option set byte 1
Option set byte 2
Option set byte 3
Option set byte 4
Option set byte 5
Option set byte 6
EEPROM initialization
Adjusting screen voltage with VG2
Vertical output off
System status byte
Table 2 Function Option Bit Setting
Description
Hotel mode (1: Yes, 0: No)
Channels preset: 1: 236 channels
0: 100 channels
NTSC color system options: 1: Yes, 0: No
Two sets of AV inputs: 1: Two sets of separate AV inputs 0 ：Two
sets of parallel AV inputs or one set of AV inputs
S-Video terminal: 1: Yes, 0: No
DVD component input: 1: Yes
RGB input: 1: Yes, 0: No
Switch off in vertical overscan
AVL: 1: Yes
11
***
***
***
***
***
***
*
Data
1
1
1
1/0
1
1
1
1
1
(Continued)