Advertisement
•
•
•
•
•
TM-1650SDU
• DEFLECTION CIRCUIT ADJUSTMENT
There are 6 modes of DEFLECTION ADJUSTMENT depending upon the kind of input signals .
The adjustments must always be carried out in regular sequence given below.
DATA MODE
SERVICE NUMBER IN
SETTING DATA VALUE
SERVICE MENU
50Hz (PAL)
DO•
DO*
4:3
60Hz(NTSC)
DA•
DO* +DA•
50Hz (PAL)
DB•
DO• +DB*
16:9
60Hz (NTSC)
DC•
DO* +DA•
+ DC*
50Hz (PAL)
DD*
DO• +DD*
UNDER SCAN
60Hz (NTSC)
DE•
DO• +DA*
+ DE•
If you change the figures in the course of the adjustments by returning to the preceding steps, all adjustments come to nothing.
The screen aspect ratio 4 : 3 at 50Hz (PAL) is regarded as the reference value for all adjustments. The other values obtained in the
adjustments using other signals become the off-set values as opposed to the reference values.
Item
H.CENTER
H.SIZE
adjustment
V.CENTER
adjustment
Test equipment
Signal generator
(Cross-hatch
pattern)
Test points
SCREEN SIZE
Adjustment
locations
D01 (H.CENTER)
D02 (H.SIZE)
[SERVICE MENU]
~
-----100%
----~,--------
100%~
PICUTURE SIZE
Signal generator
(Circle pattern)
D03 (V.CENTER)
[SERVICE MENU]
No. 51702
Adjustment procedure
1. Input a PAL (50Hz) cross hatch pattern signal.
2. Select DEFLECTION BLOCK from SERVICE
MENU.
3. Select D01 item.
4. Adjust D01 to align the picture center with the
CRT center.
5. Adjust D02 to set horizontal size to 95%.
6. Repeat above step 4 and 5 to adjust correctly .
7. Input the circle pattern signal.
8. Select D03 item.
9. Adjust D03 to agree with CRT center and signal
center of vertical direction .
33
Advertisement
