Abnormal Vertical Size; Abnormal Horizontal Position - NEC MultiSync 3D JC-1404HME Service Manual

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(5-2) ABNORMAL VERTICAL SIZE
CHECK
NG
+B line supply Regulator -
+24V, +12V, +5V line
FAILURE
REFER TO (2-2-1)
OK
~
NG
CHECK IC154 14 pin voltage
DIGITAL CONTROL
is changeable by D.SIZE
CIRCUIT FAILURE
control SIN. REFER TO 4
OK
Ir
V. OUT FAILURE
IC401, IC511, 0402,etc.
(5-3) ABNORMAL HORIZONTAL PICTURE POSITION
NG
CHECK RASTER POSITION
-
H. CENTERING CIRCUIT FAILURE
I
-
T506, D560, D561, L501, etc.
OK
•
CHECK IC155 1 pin voltage
NG
I
DIGITAL CONTROL
is changeable by H.POSI CIRCUIT FAILURE
control SW.
-
REFER TO4
OK
~
CHECK PHASE Difference between
H. SYNC and H. trigger (TP501 ). NG
H. PHASE CIRCUIT
This difference is changeable
-
FAILURE
by H. POSI control SW.
IC501, IC502, 0501, 0502, etc.
OK
'.
CHECK IC151 17 pin voltage
NG
~ H i
Lo i
fH
28kHz
~
NG
.
f
AFC FEEDBACK CIRCUIT FAILURE
IC508,O504,O536,O537
ZD505, etc.
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