LZ-601
2
BLOCK DIAGRAM
ADJUSTMENT
BRI
R
G
B
VGH
+20V
+14V
VSH
-5V
VGL
VDD
+5V
PICTURE
CONTROL
BALANCE
WHITH
ADJUSTMENT
VIDEO PROCESS
IC201
VIDEO I/P
W201
LCD MODULE
CONTROL
HIGH VOLTAGE
IC302
POWER SOURCE
DC 12V I/P
W201
BACKLIGHT
DELAY
SWITCHING
CIRCUIT
REGULATOR
CONTROL
IC301
HIGH
VOLTAGE
OSC
VOLTAGE
CONTROL
SWITCHING PULSE
IC101
PLUSE
AMP
VOLTAGE
NFB
H.V. TRAN
T201
BACKLIGHT
LAMP
SWITCHING
TRAN
T301
+30V
+14V
+20V
+5.3V
-5V
Q101
NFB
No.
ITEM
INPUT
OUTPUT
ALIGNMENT
ALIGN FOR
STANDARD
SETTINGS
SETTINGS
POINTS
1. Adjust SVR102 so that the
output-side voltage of L102 is
L102 +5V
: 5V +0.2V, –0V
LINE
Connect a DC
between 5.15 and 5.20V.
D101 +14V : 14V
±
0.4V
1
VOLTAGE
–
voltmeter to
SVR102
2. After completing the adjust-
D102 +20V : 20V +3V, –1V
L102 (output side)
ment of SVR102, check the
D104 +30V : 30V +3V, –1V
voltages at D101, 102, 104
D105 –5V : –5V
±
0.2V
and 105.
Connect a
1. Adjust SVR101 so that the
13.5
µ
sec
±
0.4
µ
sec
OSC&
oscilloscope or
pulse duration is 13.5
µ
sec
2
PULSE
–
frequency
SVR101
±
0.4
µ
sec.
WIDE
counter to
Instead, it is also acceptable
CONTROL
Q101 (collector)
to adjust so that the frequency
counter reads 74kHz
±
2kHz.
Adjust so that figure comes
NTSC : A : 3.0mm
±
1mm
on the center position.
B : 4.0mm
±
1mm
Puts a video
C : 18mm
±
1mm
3
H-POS
signal for
–
H-POS
D : 19mm
±
1mm
the inspection
(LCD UNIT)
PAL
: A : 4.0mm
±
1mm
in VIDEO IN
B : 2.0mm
±
1mm
B : 20mm
±
1mm
B : 21mm
±
1mm
15Vpp
13.5
µ
S
2Vpp
A
B
C
D
