All other service settings of TV set are made in so called
service mode of TV set operation.
To enter this mode of operation press the keys in the
following sequence: "TV", "I", and "STOP" in the
period of 5 seconds from switching on the TV set to normal mode of operation.
When the TV set is switched over to service mode the
following status line with service parameter and parameter value appears on the
screen:- The parameter to be set is selected with keys (P ▲/▼ ), and selected parameter is set with keys (Volume▲/▼ ).
- Each time you press the key for parameter selection (▲/▼ ) the value of pre selected parameter is stored. Therefore when the last setting is performed you must press one of the two keys once again. Values of individual parameters are expressed in hexadecimal form due to limited capacity of the memory.
- Values of individual parameters are variable from 0 to 3F, with the exception of parameters 11,12 and 13 where values are changed from 0 to 7F and O1, O2, O3, O4, which have value range between 0 and FF.
- When setting is finished it should obligatory be concluded with "STOP" key. After a few seconds the status line disappears and service adjustment is accomplished.
OPTION BYTES
Option bytes enable program configuration of colour TV set.
Changing individual bites of a byte modifies the characteristics of TV set.
Option bytes are set so that besides selected option byte
also hexadecimal number is set on the basis of above tables.
Example:
blue back-enable
dynamic scin control enable
blue stratch enable
Select option byte O1 and for items, which
should be activated, set “1” (other bites are “0”). In our case is as follows:
Shaded binary number should now be converted to hexadecimal
value (darker frame). Afterwards set this value.
CAUTION: Option bytes are Factory adjusted and must NOT be
changed later, because they change TV set characteristics.
Conversion from binary to hexadecimal help table:
If you press ikey (info) on remote control when the TV set
is in service mode, you will get on the screen information about the version of
current software (e.g.: VER:E9F1.6) and devices connected on I2Cbus:
Video processor: Bus
controlled TV processor for video and audio signal
MSP 34XX: Digital
stereo sound processor
SDA 9288: PIP
processor
TUNER2: Second tuner
for PIP picture
TDA 8540: SVHS video
matrix switch
TDA 8425:
HI-FI Stereo audio processor for stereo through SCART connector
If device is installed and properly connected on
I2C bus it will respond with“OK” beside the name of device, otherwise there
will be “XX” on this place.
SMPS SCHEMATIC
CLICK ON PICTURES TO ZOOM
Universal remote control codes:
3 DIGIT CODES: 116,007.009,010,025,059,060,062,063,064,069,070,074,108,118
158,162,185,187,194,196,202,205,219,236,249,250,251,296,108
4 DIGIT CODES: 1350 1051 1423 1215 1136 1079
ORION (HUNGARY): 1052 1012 1289 059 1051 1104 1075 1049
158,162,185,187,194,196,202,205,219,236,249,250,251,296,108
4 DIGIT CODES: 1350 1051 1423 1215 1136 1079
ORION (HUNGARY): 1052 1012 1289 059 1051 1104 1075 1049
