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

(5-4) ABNORMAL
VERTICAL PICTURE POSITION
CHECK IC154 1 pin voltage
NG
DIGITAL CONTROL
-
is changeable by V. POSI
-
CIRCUIT FAILURE
control SW. REFER TO 4
tNG
V. POSITION CIRCUIT FAILURE
(0403~0405, D405~D407, etc.)
(5-5) ABNORMAL VERTICAL SCAN
CHECK IC402 2 pin DC VOLTAGE
"ABOUT 5.6VDC"
OK NG
'
V. OUT CIRCUIT ERROR V. OSC ERROR (IC401)
IC402, IC511, 0402, etc. V. TRIGGER ERROR (IC501)
-39-
. ;,,;:1,.
I
,,,:1
·1i,