Hitachi VM-8480LE Service Manual page 21

Purpose:
To obtain compatibility with other VCRs.
incompleted Phenomenon:
Vertical jitter occure.
Switching noise appears across the bottom of the monitor
screen.
Equipment/Jig:
Oscilloscope
Alignment tape
Test Point:
TP202 (FM) on the SWS Circuit Board
TP201 (SW25) on the SWS Circuit Board
Condition:
Playback the alignment tape.
Adjustment Point:
X-Value Adjustment Nut
Procedure:
TILT AZIMUTH
SCREW (C)
SCREW (B)
AC HEAD
BASE AC HEAD
NUT (A)
HEIGHT
ADJUST
AIC HEAD
AIC HEAD
178mm
=a
M78mm
| MASTER
——!. PLANE
X-VALUE | CHASSIS
ADJUST i
NUT NC HEAD
BASE
Fig. 3-105
FM
OUTPUT
LEVEL
pyar S38
CENTER UP
iD «
vo
I
Ti] mame
FM OUTPUT
FM OUTPUT
FM OUTPUT
STARTS TO
MAXIMUM
= STARTS TO
FALL FALL
Fig. 3-106
3. ERROR MESSAGES
FILE NOT FOUND !!!!
PRESS ANY KEY
FILE OPEN ERROR 1!!!
PRESS ANY KEY __
TOO BRIGHT
PRESS ANY KEY
TOO DARK
PRESS ANY KEY
The subject is too dark.
Check the fight box.
The subject is too dark.
Check the light box.
mt
The subject is too bright.
Move the camera further away from the light box.
Check the light box.
COUNTERMEASURE
3-15