Circuit Adjustments; Adjustment With Commander; Adjustment Method - Sony TRINITRON KV-AR25M81A Service Manual

3-1. ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-952.
a. ENTERING SERVICE MODE
With the unit on standby
n 5 n
n
VOL (+)
This operation sequence puts the unit into service mode.
The screen display is :
Device Item
Name Name
Item No Data
GEO 00 HPS 1C
638S 0.3A 59 7F
Software version
Suffix No
(OEM Code)
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press
then press button again, hereupon it becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press (UP) and (DOWN), to select the adjustment.
4) Press button to indicate WRITE on the screen.
5) Press button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
1, 4
Select the adjustment item.
↓
3, 6
Raise/lower the data value.
↓
Writes.
↓
-
Executes the writing.
7, -
All the data becomes the values in memory.
8, -
All user control goes to the standard state.
5, -
Service data initialization (Be sure not to use
usually.)
, -
Write 50Hz adjustment data to 60Hz, or vice
versa.
2, -
Copy and write all data.

CIRCUIT ADJUSTMENTS

n
Marking of new NVM
Mode
p
SERVICE 50
0 000A
PAL,SECAM:50
NTSC :60
Total Power-On time (hours)
button on the commander),
SECTION 3

3-2. ADJUSTMENT METHOD

Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select "GEO 00 HPS" with the 1 and 4 buttons.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is 1F for PAL
reception.)
4. Write with the
WRITE.)
5. Execute the writing with the - button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
Example on screen display :-
GEO 00 HPS
0.3A 59
638S
GEO 00 HPS
638S 0.3A 59
Write with
GEO 00 HPS
638S 0.3A 59
Write executed with -
Use the same method for all Items. Use 1 and 4 to select the
adjustment item, use 3 and 6 to adjust, write with
then execute the write with -.
Note : 1. In
memory together.
2. For adjustment items that have different standard data
between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
– 15 –
button. (The display changes to
1F SERVICE 50
GREEN
Adjusted with 3
7F 0 000A
and 6 buttons.
1F WRITE 50
GREEN
7F 0 000A
1F WRITE 50
RED
The WRITE display
7F 0 000A
then the display
returns to green
SERVICE.
, the data for all items are written into
KV-AR25M81A
RM-952
,