Read Sony KV-XF21N90 Service Manual online
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KV-XF21N90
RM-915
SECTION 4
CIRCUIT ADJUSTMENTS
With the unit on standby
↓
[DISPLAY]
↓
5
↓
VOL (+)
↓
[POWER]
This operation sequence puts the unit into service mode.
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments are made with the RM-915 that comes with
this unit.
a. ENTERING SERVICE MODE
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.)
2
,
-
Write 50Hz adjustment data to 60Hz, or vice
versa.
PAL, SECAM : 50
NTSC : 60
00
HPS
1C
SERVICE
Data
Mode
Item Name
Item No
Software version
Suffix No
(OEM Code)
(OEM Code)
Total Power-On time (hours)
p
Marking of virgin NVM
GEO
1.0C
59
7F
000A
0
601S
Device Name
50
TV
1
2
3
4
6
7
8
9
0
5
POWER
TV
DISPLAY
VIDEO
MUTING
MTS
SOUND
MODE
FAVORITE
WAKE UP
SLEEP
CABLE
AUTO
PROGRAM
ADD/
ERASE
JUMP
ENT
CH
VOL
SELECT
PIC MODE
RM-915
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), select an item of adjustment.
3) Press
[MUTING]
button and it will indicate WRITE on the screen.
4) 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.
The screen display is :
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