Sony KV-J14M1J Service Manual ▷ View online
– 13 –
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the C board (RV703) for the best focus.
SERVICE
MUTING
1 F
DATA
RDR
Adjustment Item
09
Item number
WRITE
1 F
RDR
09
0
Executes the writing
Green
2. WHITE BALANCE ADJUSTMENTS
1) Set to Service Mode.
2) Input an entire white signal.
3) Set the PICTURE to maximum.
4) Select RDR(09) with [1] and [4] , and then set the level to 25
with [3] and [6] .
5) Select GDR(0A) and BDR(0B) with [1] and [4] and adjust the
level with [3] and [6] for the best white balance.
6) Write into the memory by pressing [MUTING] then [0] .
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT (RV701)
1) Set the PICTURE and BRIGHTNESS to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G, and B of the C board cathode to the oscillo-
scope.
4) Adjust G2 (RV701) volume to the value below.
0 V
165V
±
2 V DC
FLYBACK TRANSFORMER (T851)
Note: Screen VR is not used.
a. AN ITEM OF ADJUSTMENT
Item
number
number
Note
Adjustment
item
item
Initial DATA
09
RDR
25
WHITE POINT R
0A
GDR
20
WHITE POINT G
0B
BDR
20
WHITE POINT B
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the
commander) and then press [POWER] button again, hereupon it
becomes TV mode.
c. METHOD OF WRITE FOR MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), select the item for adjustment.
3) Press [MUTING] button indicate WRITE (Green) on screen.
4) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from the AC outlet, and
then plug into the 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.
FOCUS
(NOT USED)
(NOT USED)
SCREEN
(NOT USED)
(NOT USED)
– 14 –
If no acknowledgement is returned from a device which is turned "ON", the device has a problem.
In this case, one of the LED's responding to the problem device will flicker a defined number of times.
Flickering is operated by lighting the LED's for 60ms each time.
The flickering frequency responding to each failed device is shown below.
SECTION 4
SELF DIAGNOSIS FUNCTION
Board name
Ref. No.
Device
Flickering Frequency
A Board
IC003
NONVOLATILE
MEMORY
(ST24C04FB6)
1
A Board
IC300
Y/C JUNGLE
(TDA8374A)
3
All the devices are checked one after another from the left of the table.
If an error is found, the responding LED will start flickering.
So, if more than 1 device have failed, only the one on the left side will flicker.
– 15 –
Entering service mode
With the unit on standby
↓
DISPLAY
↓
5
↓
VOL
(
+
)
↓
POWER
The operation sequence puts the unit into service mode.
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. ADJUSTMENTS WITH COMMANDER
Service adjustments are made with the RM-869 that comes with
this unit.
RM-869
1, 4
Raise/lower the service item number
3, 6
Raise/lower the data
[MUTING]
Writes
-
Executes the writing
7, -
All 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
viceversa.
The screen display is :
1, 4
Select the adjustment item.
↓
3, 6
Raise/lower the data.
↓
MUTING
Writes
↓
-
Executes the writing.
SERVICE
Mode
08
Data
HSF
50
Depends on the signals
PAL, SECAM : 50
NTSC : 60
PAL, SECAM : 50
NTSC : 60
Adjustment item
00
Mode
Item #
00
V3.2C
052S
OEM CODE
German A2 Stereo
Software Version #
1
SERVICE
00
OP0
50
3D
00
0000
0000
2
(Bit options adjustable)
¤
EG
u
V
…
F
;
B©
SELECT
p
PIC MODE
p
SOUND
MODE
.
PROGR
A/B
H
CI
+
+
1
2
3
4
6
7
8
9
0
+
p
–
p
5
TV
– 16 –
Use the same method for Items Number 00-40. Use 1 and 4 to
select the adjustment item, use 3 and 6 to adjust, write with
MUTING
, then execute the write with -.
WRITE
WRITE
GREEN
0C
VSF
08
SERVICE
50
50
GREEN
0C
VSF
08
Adjusted with
3
and
6
buttons
Written with MUTING
Write executed with 0
GREEN
The WRITE display
will change back to
SERVICE.
(2nd line disappear
when written)
The WRITE display
will change back to
SERVICE.
(2nd line disappear
when written)
0C
VSF
08
00
V3.2C
052S
00
V3.2C
052S
Blank
5-2. ADJUSTMENT METHOD
Item Number 08
This explanation uses V-SHIFT as an example.
1. Select 08 V-SHIFT 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 0F for PAL
reception.)
4. Write with the
MUTING
button.
5. Execute the writing with the - button. (The WRITE
display returns to green SERVICE.)
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