– 5 –
1. Supply power to the set and measuring instruments and allow to warm up for at least 30 minutes.
NOTE
Be sure to use a non-metallic driver for adjusting there VRs. A metallic driver can cause damage by shorting.
Adjustment tool
1. Digital multi meter
2. Pattern generator
3. Colour analyzer
Adjustment mode
Over scan mode
ADJUSTMENT
ITEM
TIMING
PATTERN
SETTING
VR LOCA-
TION
ADJUSTMENT PROCEDURE
CHECK B+ VOLTAGE
HOLD DOWN VOLT-
AGE SETTING
PATTERN GEN-
ERATOR FULL
WHITE
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
PATTERN GEN-
ERATOR
MONOSCOPE
PATTERN
TEST POINT : D910(-)
DIGITAL VOLT METER
VALUE 47.5
±
0.5 VDC.
TEST POINT : ZD501(-)
DIGITAL VOLT METER
VALUE 8.5
±
0.2 VDC.
Pin4 voltage is 3.0
±
0.2 VDC.
Pin3 voltage is 4.0
±
0.2 VDC.
Pin5 voltage is 1.5 V or above.
Adjusting FBT FOCUS VR to make focus
resolution of reach over 800 TV lines,
Four corners must be also clear.
Adjusting VR401 horizontal phase to
make screen right and left symmetrize.
Adjusting H-size control VR306 to make
signal side of picture of scale is "2"
position.
Adjusting vertical linear control VR302,
make top square and bottom square to be
equal.
Adjusting VR303 to make screen up &
down symmetrize.
VR901
VR503
VR204
VR202
VR203
FBT
FOCUS
VR
VR401
VR306
VR302
VR303
BRIGHT VR and
CONTRAST VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
All extemal VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
BRIGHT VR and
CONTRAST VR
TO MAX.
VR TO MAX.
INTERNAL
VOLTAGE
ADJUST-
MENT
COLOUR
ADJUST-
MENT
LUMI-
NANCE
ADJUST-
MENT
CON-
TRAST
ADJUSEMENT
FOCUS
ADJUSTMENT
HORIZONTAL
PHASE
ADJUSTMENT
HORIZONTAL
SIZE ADJUSTMENT
VERTICAL LINEARY
ADJUSTMENT
VERTICAL CENTER
ADJUSTMENT
3-2. ADJUSTMENT CONTENTS
