Circuit Adjustments; Adjustment With Commander; Adjustment Method - Sony KV-XA25M80 Service Manual

5-1. ADJUSTMENT WITH COMMANDER

Service adjustments to this model can be performed using the
supplied Remote Commander RM-914 and RM-954
a. ENTERING SERVICE MODE
With the unit on standby
n [DISPLAY] n 5 n
This operation sequence puts the unit into service mode.
The screen display is :
Device Item
Name Name
Item No Data
GEO 00 HPS 1C
032S 1.0C 59 7F
041S
Software version
Total Power-On time (hours)
Suffix No
(OEM Code)
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the
commander), then press [POWER] button again, hereupon it
becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] 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.
↓
[MUTING]
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.)
[MUTING] + -
Write 50Hz adjustment data to 60Hz,
or vice versa.
2, -
Write 50Hz adjustment data to 60Hz,
or vice versa.
SECTION 5

CIRCUIT ADJUSTMENTS

n [POWER]
VOL (+)
Marking of new NVM
Mode
p
SERVICE 50
0 000A
PAL,SECAM:50
NTSC :60

5-2. 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 [MUTING] button. (The display changes to
WRITE.)
5. Execute the writing with the [0] button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
Example on screen display :-
GEO 00 HPS 1F
1.0C 59 7F
032S
041S
GEO 00 HPS 1F
1.0C 59 7F
032S
041S
Write with [MUTING]
GEO 00 HPS 1F
1.0C 59 7F
032S
041S
Write executed with [0]
Use the same method for all Items. Use [1] and [4] to select
the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].
Note : 1. In [WRITE], the data for all items are written into
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.
– 49 –
KV-XA25M80/XA25M83/XA25N90
RM-954
GREEN
SERVICE 50
0 000A
Adjusted with [3]
and [6] buttons.
GREEN
WRITE 50
0 000A
SERVICE 50 RED
The WRITE display
0 000A
then the display
returns to green
SERVICE
RM-914